How do animals obtain water in the winter when water sources are frozen.
Although this is a very silly question for us Canadians, I actually found a quote: "Studies in Canada have shown some cows have gone 50 to 60 days with snow as the sole water source without any adverse effects." However, it quite uncomfortable to take a shower in snow. -- Zeizmic 01:13, 1 May 2006 (UTC)
How are fullerene molecules formed? Is there a reaction mechanism process that creates hey!!!!!!!!!!!!!!!!! them or is it something else. I am particularly interested in buckminsterfullerene and its formation. Thankyou. Vollsa 01:05, 1 May 2006 (UTC)
I dont now much but i am kind of concerned because i dont now what is wrong with me; my foreskin is retracted, but not past the head, and a line of skin runs from the base (on the underside) of my shaft to near the opening which connects the shaft to the skin. it is visible on the outside of the skin. Please help.
I am a virgin and a recent teen (i've been a teen for a couple years) -- 216.197.192.136 03:06, 1 May 2006 (UTC)
Sounds like your frenulum. I used to have one myself. Scared the shit outta me when it snapped. Howard Train 05:29, 1 May 2006 (UTC)
Anyway, to the question-poster: Does it stick out, three-dimensionally? How is it different from the surrounding? When did it appear? You're about 14-16? -- Mac Davis ⌇☢ ญƛ. 07:58, 1 May 2006 (UTC)
Yah it's '3D', it just connects from by where the scrotom connects to the shaft and goes to near the tip of my penis. So nothing is bad about it though? I can live happy with it? i think it is a frenulum...
Yah, i google image searched it and it's a frenulum....
Are there any pictures on frog anatomy...or any other type of science-related subjects? Mostly people I know tend to be visual. Thanks!
I know that mass and energy warps space-time but why?
How did the British Navy preserve lemons and limes that were used in preventing scurvy? A lemon may last several weeks if kept in ideal conditions, but it seems that the time between the fruit being plucked from the tree and the time it was delivered to the sailors would be a few months, or maybe even as long as half a year. The lime or lemon would have to be harvested, packaged, shipped, and stored before being finally served. Packing it in salt would just draw out all of the fruit's moisture. Does anyone have an answer?
--Sputnik
You can water them with snow. -- Zeizmic 17:33, 1 May 2006 (UTC)
When I try to login in MSN Messenger, sometimes (most times) the window about the unread messages in my e-mail account pops up but the rotating icon keeps rotating, impeding me from viewing my contacts. Has anyone else experienced this problem? Does anyone know how to solve it? Thanks.
Relativity often emphasize that the laws of physics for everyone are the same no matter what speed they are travelling at. Why is that?
The laws of physics are the same all over our universe( and probably all others if there are any more ). irrespective of what speed you or the observed object is travelling relative to each other. They are this way because if they were not the laws would not be universal.
In other words the universe would break down and implode or flash into non-exixtence, because the physical laws in zones with common borders would not be compatible. Some may say that the laws could be different if there were volumes of space containing nothing between different areas or universes.
This is also impossible for at least two reasons. 1. there can be no areas where 'nothing' exists ( neither time nor space) for the obvious reason that if there is no space there is no separation and 2. If there was something called space between the two areas then such entity would have its own border regions which must by definition come up against the formerly mentioned regions and therefore be in contact.
As you can see the speed of objects or entities does not have any real meaning in this context because
1.Even if the two objects were travelling say in opposite directions at the speed of light ( as in fact photons often do ) each would be travelling AT the speed of light relative to the other. They must by definition respond to the same laws of physics because even though travelling at light speed they would have at some time have been in the same area.
2.If they are travelling at different speeds, say one is 'stationary' and one travelling at 180,000 k p sec. in the opposite direction, then what happens ? If the laws were not the same we could not 'see' each other, obviously because we would not be using the same laws. If we did 'see' each other we would have to conclude that we were subject to the same laws. If we swapped places and we were then on the object travelling at 180,000 kps what would happen ? We would perceive that the other object was travelling away from us at that incredible speed and that we were stationary ( if we did not have any other reference point which was within our sphere of observation )
You can also ask the questions: a) what happens when the two entities are travelling toward each other ? b) Which one is moving ?
-- Antipodeite 13:37, 8 May 2006 (UTC)
Is a synaute a real thing? zafiroblue05 | Talk 12:44, 1 May 2006 (UTC)
i think people need to stop inveseting so much faith in the ridiculousness (sp?) of google. i could be mistaken but i believe it's filtered by republican war machines! but like i said i could be wrong....now off to macdonalds! PSYCH! peace -jms
Do you mean sign out ? That's a real thing !-- Antipodeite 13:06, 8 May 2006 (UTC)
in gsm technology, we have MSC codes(represented by first five digits of the 10 digit cellular number). what is the counterpart of this in the CDMA technology? is it diffrent in various parts of the world? if yes then , what is the trend in india?
dominic, new delhi.-- 210.210.24.146 12:55, 1 May 2006 (UTC)
Is it possible to use sextants or similar low-tech tools for Celestial_navigation in an activity like geocaching? The accuracy of many GPS receivers is about 3 metres. What would be the typical accuracy of using astronavigation techniques? Does it even come close to 3 or 10 metres or is it too fuzzy to use for geocaching? -- Sonjaaa 13:19, 1 May 2006 (UTC)
Torge, Wolfgang. Geodesy (3rd ed.). mentions the accuracy of some observational instruments. For stationary observation the Danjon prism astrolabe achieved a precision of ±0.05". For field measurement, transportable instruments mentioned are: prism astrolabes, zenith cameras (±0.5" or better) and the universal instrument (a theodolite with attachments for astronomic observations, ±0.1" to ±0.3".) All these instruments require a very accurate integrated time source, synchronized with International Atomic Time. EricR 16:36, 1 May 2006 (UTC)
I want to add an image of Leslieville to show the boundaries of the neighbourhood, can I use google maps or if not then what online mapping source can I legally use to make the image, showing all the streets and the boundaries?-- Sonjaaa 14:34, 1 May 2006 (UTC)
Ontario has digital base maps here [1] I just emailed them to check the public domain status, since I don't see anything on the web site. -- Zeizmic 15:48, 1 May 2006 (UTC)
Neat, I also found this:
OpenStreetMap --
Sonjaaa
18:21, 1 May 2006 (UTC)
Does it mean that I can't use Google earth pictures in my website, even if I don't make any money out of it ? Say I use a high resolution map of a city and lable the streets etc and display it so that it is helpful for others to find their way around ? If i really want to do it, can I get google's permission ? How do I get it ? -- Wikicheng 18:26, 1 May 2006 (UTC)
What about this?? http://geodepot.statcan.ca/Diss/2006Dissemination/Data/download_e.cfm Maybe we can use this data for a map of Toronto neighbourhoods? Do we have permission?-- Sonjaaa 19:16, 1 May 2006 (UTC)
Although this is depressing, throughout Canada, you will find the same thing. If you email them, you will get the 'crown' speech that I got. Only if they proudly splash 'public domain' on their web site (as the National Archives) are you in the clear. -- Zeizmic 01:50, 2 May 2006 (UTC)
Let me assure that being a wikipedian I wasn't planning to misuse the google map. I just thought that it would be useful to setup a website which would allow people to navigate thru a city easily. Definitely not looking for loopholes ! My apologies if I sounded that way. Well... I may write to google and see what they say. Thanks for all the info and help -- Wikicheng 12:08, 2 May 2006 (UTC)
I live in the USA and am taking my USA Digital Canon Rebel XT to Europe this summer. Ordinarily I would take a voltage converter but the specs on the back of the battery charger say the "input" is 100V - 240V so I am thinking that other than the issue of incompatible prongs, I could theoretically use this charger without converting the voltage (just perhaps get an adapter so the USA prongs can fit into a European outlet). Doesanyone have any knowledge about the implications of the specs on the charger? Do you know anything about the Rebel's battery charger? (It is the CB-2LT charger).
Hi i have a used Toshiba television set from 1997 which has only Closed Captioning and no fancy features. i plan to take it to India. i understand that the US has NTSC colour television system while India has the PAL colour television system. Is there a way that the television set would work in India? [++ Any specific knowledge of duty at Indian Customs would be welcome too ++]
Regards Babbu
Dear Kainaw and Finlay McWalter
Thank you very much for your prompt and informative replies and apt suggestions.
i will certainly do as you say.
The shipping for the TV would cost over $300.
Regards,
Babbu
Hi there,
I was wondering how many carbs are in a packet of sugar. Or Even easier, how many grams of sugar are in a packet, because I have a carb count for 100 grams of sugar but I don't know by what to divide it.
Thanki
A restaurant packet of table sugar is typically 1 teaspoon of sucrose, equal to 4 g or 16 cal. Sucrose is 100% carbohydrate, readily digestible to about 50% glucose and 50% fructose. alteripse 05:15, 2 May 2006 (UTC)
I need to find information on army paying for my medical studies. I heard that the army pay for you university studies if you join the army for a short period. Does anyone know a good website to find information on this? I am looking for information for british universities.
Cheers
Google is probably your best bet. I'd advise against speaking to recruiters as they're notorious for over-hyping military scholarship programs (at least that's the case here in the U.S.). Best, David Iberri ( talk) 21:23, 1 May 2006 (UTC)
Since stars work out by Hydrogen fusion and at later stages Helium and then much heavier atoms as it begins to collapse, but where do atoms aobve the weight of iron come from, because only hydrogen was created in the big bang, so where do the heavier atoms come from since it becomes energy-wise unprofitable to fuse atomic nuclei beyond iron.
Also once a predominant amount of the nuclei have gone through whatever process is the answer to the question above, will stars cease to exist, or will there be fission stars, or what. Cheers Philc T+ C 16:36, 1 May 2006 (UTC)
As I understand it, the fuller cycle seems to be, and this is a laymans understanding only in outline:
Hope this helps, and if it's roughly accurate add it to some appropriate article on creation of elements or stellar processes. As said, its my lay-understanding only, but I think its roughly ok as a broad non-technical answer. FT2 ( Talk) 15:09, 2 May 2006 (UTC)
Does there currently exist a technique which permits the synthesis (as opposed to the sequencing) of a specific desired strand of DNA or RNA of known sequence, presumably using its base nucleotides? If so, how does this work and what are the limitations of the technique? As this might be a lengthy answer, a very brief explanation and a reference for more data would be terrific.
(I am already familiar with PCR, and using and selecting an existing sequence/allele for amplification or expression in-vitro. I am curious about synthesizing very long strands or sequences which may not be found in nature.)
As a correlary, is there a simple, high-yield, automated process for protein synthesis from its amino acids? Especially for longer, more sophisticated proteins?
Thank you very much for your help. :)
-- 216.226.42.167 17:11, 1 May 2006 (UTC) Alaiyo
Thank you to the both of you who offered me a nudge in the right direction. Yes, I am a newcomer, I am also a "she", and I had a brainstorm the other night on overcoming some of the protein synthesis challenges to which you alluded. DNA synthesis seemed like a reasonably obvious extension of the problem. Your leads (and admonition for caution in terms of safety/socio-economic implications) are very helpful. Have a terrific day!
Recently i purchased a deo which states under the ingredients list the following "alcohol denat" & "parfum". I read the comprehensive article with regard to "alcohol denat" in wikipedia site and all he ingredients used in making it, but was unable to find out the same with regard to "Parum" Please help me to get the ingredients used in making the same.
thanks for the reply, but a small clarification, i read in an article that there are two kinds of alcohol used in cosmetics and perfumes (1) alcohol denat (2) alcohol parfum.
if parfum is french for perfume then what is alcohol parfum?. appreciate your views on this
If you travelled into space with a compass which way would it point once you'd left earths atmosphere??
Why is it that some medicines have their name, for examples (this is made up) Magensium Hydrochoride BP. What does this stand for if anyone knows? Thank you
What is that exactly? Is it a preservative or just a solvent for the drug to be in a solution form? Thank you for the hasty reply.
BP does stand for British Pharmacopoeia. The comparable label in the US is USP, which stands for United States Pharmacopoeia and indicates that the product meets the specifications of the USP. This is normally used of older generic products (e.g., aspirin or Epsom salts) that you might consider "medicinal chemicals" rather than patented pharmaceuticals. alteripse 05:11, 2 May 2006 (UTC)
You have two balls perfectly next to each other on a perfectly smooth slope. Both balls are of exactly the same composition. When you roll the balls at the same time down the slope, they should both travel at exactly the same rate. Take the same situation, but this time make one of the balls hollow. Will the hollow ball be slower than the other because of friction from the air inside? Or for any other reason? Flea110 21:00, 1 May 2006 (UTC)
My guess is the 'friction' from the air inside would be minimal, the hollow ball would be lighter than the solid ball. Since it has the same surface area as the solid one it would be slower due to air friction of the air OUTSIDE.
Is there a simple test for the presence of sugar? I've been buying Nesquik made with Neutrisweet for years, but I bought some that has the appearance, texture, and disolving qualities of the sugared kind. I wrote tothe company about this, but they didn't understand what I was talking about. So is there a simple household test for the presence of sugar? Bubba73 (talk), 21:18, 1 May 2006 (UTC)
I have uploaded a photo of what I thought was perhaps a mushroom of sorts. I have since looked through a catalog of fungi photos and saw none similar. The fellow in the photo felt smooth, cool, and mushroom-like to the touch. It grew near or in decaying organic material in the shade. Does anyone know what it is?
Thanks for your attention. This is a great service. I used a hyperlink rather than the Image: in brackets because I didn't know if it was acceptable to actually display an image on this page. Hope that is okay.
-- Bad carpet 21:45, 1 May 2006 (UTC)
[[:Image:Unknown_SE_AZ_April_29_2006.jpg]]
to produce
Image:Unknown_SE_AZ_April_29_2006.jpg. Note the leading colon. Good luck with twenty questions!
Isopropyl
21:50, 1 May 2006 (UTC)Gotta use the image for something: Conopholis. Melchoir 06:43, 2 May 2006 (UTC)
Looks like it to me. Thank you! -- Bad carpet 16:17, 2 May 2006 (UTC)
Hi all. I'm trying to remember the name of a DOS - CGA computer game I played back somewhere around 1988 to 1992, I forget the exact name of it.
It was called something *like* Starflight I think, but I found that one on the underdogs, and it's not it. It was similar in that it was a space game. You had a crew of 5 (or is it 6?) on your ship, and you had skills such as tactics etc for each person to go up in. On occasion you would land on a planet and go inside a structure. Inside the structure you would see the action in front of you, but then overlaid on that would be a small HUD-type display with the walls and such in blue. Your 6 crewmembers would be behind you in blue circles on the HUD as well, and then unknowns would appear as red circles. You could get weapons like laser cutlass, some kind of mace, but also some projectile weapons. One of the worlds you landed on had (3?) large towers (like 500+ stories), which were all "populated", but you were only interested in one particular area of one of them. Anyways, that's most of what I can remember. If someone wants some more details, or has questions, post and I'll try to remember some more. Thanks in advance. Aaronw 22:50, 1 May 2006 (UTC)
on a digital cmara what is the Diffrence between the NTSC and the PAL video recording systems... is one better than the outher for taking videos?
I've heard some Christians and creationists claim that microevolution and macroevolution are separate and distinct from each other.They claim that all examples of observed evolution are of microevolution and that 'small changes do not imply large changes'.They also claim that there is a genetic barrier stopping organisms from evolving so far as to cross the species border.Are those claims true?
thx much
Sorry if this is a kind of stupid question. Is it really true that cockroaches have survived nuclear explosions? I've heard people joke that cockroaches will be the only things still around after we all nuke each other to death, but I was wondering if that was really true. I already checked the page on cockroaches and several pages about nuclear weapons, and didn't find this information anywhere. I did see that they could survive high levels of radiation, but would they survive the amount of radiation in a nuclear bomb?
Thank you!
I am vary competent in basic and decent at C programming languages. A fellow robot enthusiast had suggested I switch to PSOC programmable system for my robotic uses.. had any one else had any experiences with PSOC?? is it worth the switch?? SumoBotMaker 04:40, 2 May 2006 (UTC)
Hi all,
I'm looking for a good first-year-undergrad level chem textbook (or two, if it's impossible to get one that covers both organic and inorganic). My formal chemistry education goes up to A-level (about eight years ago), though I've done QM-of-the-hydrogen-atom what feels like a hundred times since. I'm looking to freshen up and slightly deepen my knowledge. Any recommendations? (Easily available in the UK is a bonus but not essential thanks to Amazon etc.) -- Bth 07:51, 2 May 2006 (UTC)
can anthrax be used as a bioweapon?
hello
i have a habit of chewing the skin near my nails.its like i cant think without chewing my skin.whats happening to me?
Does all chemical reaction need an activation energy? If nuclear reactions need an activitation energy, what's the activitation energy for nuclear fusion? I mean what activates the hydrogen to collide and create and helium?
Coloumbs law gives us force of attraction between two particles(charged).Does that include their masses as well? How about if a massless particle (gravitron)were subjected to this postulate?
I live in the UK and here the debate about nuclear power seems to have entered a new era, with many people who would normally consider themselves "green" warming to the idea of nuclear, I suppose as a lesser of two evils. Meanwhile renewbles seem ever more remote as a possibility.
I would be interested to hear personal viewpoints on this from around the world. To phrase it as a question: Can nuclear power save the planet?
Thanks to everyone who responded! I guess I was aware that I wasn't using the Desk as intended, but I couldn't help myself. Opinion-based questions seem to get extremely interesting and intelligent responses here (flattery will get you anywhere). Is there anywhere on Wikipedia where you can hold structured debates? I mean the articles tend to sketch both sides of an argument due to the NPOV policy without letting either side really vent, while Talk Pages tend to get hung up on details. Anyway, thanks again.
I'm wondering if anyone knows of any good software or games that focus on teaching evolution. Currently, the only title I know is SimLife. Anyone have any ideas? Thanks! — Asbestos | Talk (RFC) 16:07, 2 May 2006 (UTC)
If someone is in a boat in the 1500s & the wind is blowing WEST, how can they go EAST, assuming there is no current?? Obviously they were able to, otherwise one would be at the mercy of the wind when sailing. 199.201.168.100 16:35, 2 May 2006 (UTC)
BigFatDave 12:06, 3 May 2006 (UTC)
Hello, I have been trying to get the flowchart for the manufacture of DDT(Dichlorodiphenyltrichloroethane)for sometime now but i've not been successful.Can anyone please help me out.I will be very greatful if anyone can get the diagram for me. Thanks.
What are the names of the vitamins that play a significant role as coenzymes in the Krebs cycle?
How many Joules of energy would be procured by a wire 1 metre away from a single iron dipole in a magnetic iron lattice (not counting other atoms in lattice) at 20oC (293.83K)? Thanks *Max* 20:43, 2 May 2006 (UTC).
This isn't homework! 69.17.182.114 18:32, 3 May 2006 (UTC) (Max)
Acording to my Physics book all radioactive substances have a half life during which half of them decay. This means( according to my book) the substance should never decay entirly.
What happens then when 1/2 of the no. of atoms includes a decimal or is smaller than one? For example, 1,000,000,000 atoms with a half-life of 10 seconds. After 100 seconds this should decay to 975,562.5 atoms. Is this posible? If it continues (including Decimals) after 300 seconds (5 mins.) it will become 0.9313 atoms, Again is this Posible? I know an Atom can be broken into smaller particles but can it go like that?
Thanks.
Only in a general sense, that half-life is a bit of a simplifaction. You can't have a partially decayed atom; wither it's one element or another. -- Scienda 07:11, 3 May 2006 (UTC)
I was just wondering who discovered chlorine, and how it was discovered.
Signed, Joe
Would it be easier or more efficent for a plane to use a anamontronic wing-like aviation s ystem rather than using fixed wings? Would it be more fuel efficent if a giant plane were designed with big wings that moved similar to a giant hawk? And how would I go about getting a patent for this? Lord Westfall 22:32, 2 May 2006 (UTC)
I have a friend who wanted me to ask do those pills that claim to make your cock bigger actually work? My friend asked me, but I don't know what to tell him. So do those pills actually work? If so, which ones? My friend really wants to know. Lord Westfall 22:37, 2 May 2006 (UTC)
Wiki is pretty much anonymous anyway, so no point in the old "my friend was wondering" explanation...we don't know who you are so why bother? Loomis51 01:39, 5 May 2006 (UTC)
Staphylococci (including S. aureus and S. epidermidis) are known to migrate along medical devices such as plastic intravenous catheters. However, I believe they lack a flagellum, pilus, or other appendage for movement. Do they migrate along the catheter simply by dividing? Thank you very much.
Does anyone know what percentage of smokers actually develop some form of lung/throat/mouth cancer at some point in their lives? I'd be interested in seeing the statisics compared to the same kinds of cancer in non-smokers. I've had a look on the web but it's very difficult to wade through all the pro/anti-smoking propaganda. Anyone have a straight answer? Cheers. -- Kurt Shaped Box 23:48, 2 May 2006 (UTC)
I'm not convinced the 154,000 diagnosed is a worldwide figure; it looks more like a country figure. 57.66.51.165 08:00, 3 May 2006 (UTC)
Thanks guys - I appreciate it... :) -- Kurt Shaped Box 00:10, 4 May 2006 (UTC)
How come stun batons (tasers) make that clicking sound? — Keenan Pepper 23:52, 2 May 2006 (UTC)
i have read over the answers to the previous question regarding this topic and realised that it was a pretty straight forward example and would like to rephrase it to more smaller quantities:
Q: What is the simplest way to dilute 1M Hydrochloric acid down to just 250ml of 0.1M Hydrochloric acid? are there any specific calculations that need to be carried out?
thanks in advance!
This will probably seem less than mysterious to anyone with a vague knowledge of fish, but unfortunately there are lots and lots and lots and I don't know where to start looking, so... can anyone identify our little friend here so he can find some appropriate articles? Thanks :) Mystery fish (at the bottom) Yummifruitbat 02:24, 3 May 2006 (UTC)
How much of the following is true:
A man's penis tends to hang to one side. With this in mind, tailors ask clients "which side do you dress". The majority of men "dress to the left".
I can't find it on Wikipedia, nor on Snopes. If it (or part of it) is true, what factors would influence it?
Thanks! -- 84.51.154.196 02:31, 3 May 2006 (UTC)
I recently read an article by a doctor, in response to a question from a reader that his penis was oriented towards the left. The doctor had mentioned that most of the men have this feature. He even mentioned that the crotch of the trousers are stitched sligtly to the left side to accomodate this. But I have never had a tailor ask me this neither did I find any left orientation in the ready-made trousers -- Wikicheng 06:14, 3 May 2006 (UTC)
This goes back to the days when men's trousers were a lot closer fitting than they are today. The crutch of the trousers would come right up tight against the scrotum, which needed to be positioned on one side or the other to avoid it being uncomfortably divided, with one testicle hanging left and the other right. It was more a scrotum problem than a penis problem. The penis would obviously go whichever side the scrotum went. Some men preferred the left side, some the right. Tailors would never be so rude as to assume which side the gentleman preferred his dangly bits to hang, but would always ask which side they "dressed". For a tailor's regular customers, this information would be noted the first time, and would be used when making future trousers. I have certainly had this question asked of me. It happens far less these days, mainly because trousers generally have a different shape and the problem is avoided, but also because a lot of guys would consider this a ludicrous invasion of privacy, and no shop wants its staff exposed to charges of inappropriate questions (or even sexual harassment). How times have changed. JackofOz 06:58, 3 May 2006 (UTC)
So is there a WP article about this? There seems to be enough information. It would be interesting.-- Sonjaaa 13:34, 6 May 2006 (UTC)
What's the easiest way to identify the exact species of various trees I spot in Toronto? Do I need to buy a field guide, and if so which one is best suited for my needs? Do I need to take pictures of the leaves or analyze the bark, or is there some sort of DNA test I need to do to figure out the exact species?-- Sonjaaa 02:56, 3 May 2006 (UTC)
OK i ordered "Trees In Canada" by John Laird Farrar! :)--
Sonjaaa
13:00, 3 May 2006 (UTC)
Why electric field strength is greater than (force/charge)? thank you. s
I've learned in my Chem class that polar substances dissolve in polar solvents,eg NaOH dissolves in water.Non-polar substances do not dissove in polar solvents and vice-versa.Why does Ethanol(C2H5OH) dissolve in water? This is not a homework question.Just wondering. Thnx
Since solar flares are a threat to satellites are they not also a threat to fly-by-wire technology?
Incidentally, I just found a very interesting set of FAQs about aircraft safety here but the guy who runs it has just retired. -- Shantavira 08:08, 3 May 2006 (UTC)
Hello fellow Wikipedians! I've been helping edit the article at Wikipedia. I've seen it rise in google rank over time. It is now ranked four, but as you know many Wikipedia articles rank number one. Thus, I also want to know if there are other techniques specific for Wikipedia to improve ranking. FYI, I've done my own search in Wikipedia and read Search engine optimization and other related articles.
Another issue. The pagerank of Wikipedia's Opus Dei article is 6/10 when I use the pagerank at the google toolbar. However, I found out that the Unofficial Homepage which has a google search rank of number two has a page rank of 5/10. This means it has a lower pagerank than Wikipedia's Opus Dei but it is still higher in the google search. Why could it be so?
Looking forward to some great insights on this. Maraming salamat po (thank you in tagalog! Cabanes 09:26, 3 May 2006 (UTC)
Who was the first human to orbit the Earth? Thank You in Advance. -- Siddhant 10:36, 3 May 2006 (UTC)
Of course it would be Gagarin. Sorry I wasted your time by asking such a silly question. Anyway thanks for the answer. -- Siddhant 11:24, 3 May 2006 (UTC)
How can we protect workers who make PVC from the harmful effects of Vinyl chloride?
I've downloaded Chaosynth and its manual provides too little information about the physics of the sound and so. Can anyone recommend me an information source that speaks extensively about the subject? Thank you.
Which of the following statements is true?
A. Electrons are negatively charged and are found in the nucleus of an atom.
B. Electrons are negatively charged and are found outside the nucleus.
C. Neutrons are positively charged and are found in the nucleus.
D. Protons are positively charged and are found outside the nucleus.
In the Restriction of Hazardous Substances Directive page (2002/95/EC), paragraph 4 under "Details" states the maximum concentration of Hexavalent Chromium by weight of a homogeneous material is 0.1%. Where is that stated in the Directive? Thank you.
How exactly do you get the helicopter to pick you up in The Sims 2, when you need to get to work? Thanks, K ilo-Lima| (talk) 18:48, 3 May 2006 (UTC)
do st bernards and chihuahuas have the same size brain since they are the same species? Or does brain size relate to the size of the dog? thanks
carol
does any body know what are the latest coleman non radio active gas mantles made of and what would be the appropriate composition and formula for making a durable ,strong ,bright white light gas mantle(non radi active ) and has there been further develoment in this particular area and by whom.
Why no article on sequential times? 01:02:03 on 04/05/06, [6]?
WP offers a search bar with two buttons, Go and Search.
Firefox offers search engines but the WP one only ... searches. Does anyone know about a "Go" engine ? Thanks a lot. -- DLL 20:06, 3 May 2006 (UTC)
hey i need information on the Warren Truss bridge design, thnk you, matt
This is NOT the place for medical consulting, I know that, but this is of no importance, and not exactly a thing I'm gonna see a doc about. I just noticed that on my right eye, there was a bit of pink discolouration. So I look closer in the mirror, and it looks like some veins that have blown or something. Nothing big, just a tiny bit of pink (no intense red) that's not noticable for anyone not looking closely, focusing on it. What could this be? More importantly, what could it be caused by? Although it's hard to describe it, I can clearly see that there are some veins there, so it's not some sort of spot that's flooded with blood. Thanks in advance! 213.161.189.107 22:24, 3 May 2006 (UTC) Henning.
I like to feed the gulls (herring gulls, lesser and greater black-backs around here). I get together a big pile of scraps and leave it out in the garden for them and watch them feeding through the window.
Invariably, as soon as one of the flock of gulls I've attracted descends and picks up a piece of food, the rest of them immediately get angry and give chase to that single bird across the sky in an attempt to rob it of its meal - completely ignoring the fact that there is about 2lbs of meat/cheese/bread/etc. just sitting there on the ground.
Why are gulls seemingly more intent on expending time and energy to deprive another gull of food when by simply cooperating and putting aside their squabbles for five minutes, they would all be able to gather round and eat plentifully from the pile? This doesn't make sense to me at all (actually, it seems like a very human mindset). :)
Quite often, while the rest of the gulls are flapping, bickering and screeching in the sky above, a single bird will land at the food and quietly and calmly eat its fill then leave before the others have given up the fighting and noticed. Thus, the 'jealous' majority miss out. Do you think that this is a sign that this particular gull is more intelligent than the rest?
As someone else, somewhere online once put it - a gull's mindset seems to be "Everything that's mine is mine. Everything that isn't mine is also mine". :)
-- Kurt Shaped Box 00:38, 4 May 2006 (UTC)
Three thoughts:
1) Perhaps having "excess food" is so out of their normal experience that they don't know a different behaviour would be beneficial in such cases. That is, they are going strictly by instinct, which developed based on food being scarce.
2) The fighting over food may also be a way of establishing dominance, which may also come into play during mating.
3) They might want to avoid landing for fear of predators, like dogs.
StuRat 01:56, 4 May 2006 (UTC)
This was asked further up the page a few days ago but no-one replied. Is a 'normal' foreskin supposed to retract fully behind the head of the penis when it's erect? Thanks. -- 84.71.80.239 00:44, 4 May 2006 (UTC)
Is [7] generally reliable? More specifically, what are your takes on [8] and [9]? Black Carrot 01:16, 4 May 2006 (UTC)
== Do birds masturbate? == bbbbbbbbbbbbbbbbbbbb
This is not an attempt at vandalism, so pls don't revert my question. :)
My (male) macaw likes to rub his butt area against his toys and perches and seems to get really excited when he does this. He goes faster and faster, hooking his tail under whatever he's humping before he stops and sits there panting with his feathers fluffed up. It looks to me like he's getting himself off and cumming. Is he? Do birds really masturbate? Should I try to stop him doing it?
He probably is masturbating. Birds have no concept of 'sinful' or 'inappropriate' behaviour. It's a natural bodily function - I'd just let him get on with it. If you try and stop him (some bird owners squirt their pet in the face with cold water from a plant mister when they catch them wanking), he'll just get cranky and aggressive from the hormone buildup. -- Kurt Shaped Box 17:54, 4 May 2006 (UTC)
My daughter needs a source to interview for a report on kiwi birds. Any ideas of where to obtain a speciallized individual on kiwi birds? Dg2 02:54, 4 May 2006 (UTC) Thanks dg2
Is it Summer or Spring when the North Pole is tilted toward the sun. -- Jesusfreak 03:47, 4 May 2006 (UTC)
Thank you very much. -- Jesusfreak 03:47, 4 May 2006 (UTC)
What color is a nitrogen flame?
Hair has a lot of disulfide bonds (cystine I assume), and I assume it is liberated in the form of malodorous molecules, but is there a primary molecule or class of molecule (more specific than sulfides) that causes the stench? Sifaka talk 05:12, 4 May 2006 (UTC)
Is it possible to achieve zero gravity on earth?
Continuing from Jonathan, even when you jump off from a small height (say from the top of a table or a small ladder (basically when you are experiencing a free fall), you are in zero gravity -- Wikicheng 23:57, 4 May 2006 (UTC)
Can diesel be used in a high compression ratio jet engine so as to enhance safety in case of a crash as diesel does not catch fire due to sparks and spillage?
According to the formula e=mc², it is possible to get a lot of energy from a very small amount of mass. Practically, we lose of a lot of energy in every machine. If we burn a lot of coal, a huge amount of it is wasted as ashes. Even in nuclear power plants, a lot of radioactive material is wasted as nuclear waste. Is there any(practical/theoretical)way to convert the whole of a substance into energy without wasting much?
How can polymerization be used to make PVC soft without using plasticers? Thanks in advance.
Anything you add to the PVC could be construed as a plasticezer because you are taking away from the purity of the end product. The best way to do this is to create a plastic that is more amorphous (non-crystaline) which will make the plastic more of a tangled mess of molecules thrown together in a ball rather than an ordered crystal which is much more rigid. The best way to do this is to heat the plastic past its melting point until it is in a near liquid form with a lowered viscocity. Mix it well then super cool it. This will shorten the chains as you have broken some of the intermolecular forces of the original plastic and it will take away from the crystalinity. However once you do this it will severely degrade the plastic.
Hello, Is it possible to convert a pdf file (Adobe Reader 6.0) to a text format that I can edit. As it is currently Acrobat won't let me select anything to copy & paste it, when I try to save as text it saves a blank txt file & when I try to copy the file to the clipboard & paste it it doesn't paste anything. AllanHainey 09:47, 4 May 2006 (UTC)
You can use a software called PDF to Word v1.6 to convert PDF files into RTF format. RTF files can be edited normally with a text editing software(MS word for example). This software is not free. You can get it at http://www.verypdf.com/pdf2word/index.html. This is not an advertisement, you can use any other software if you like.-- DIGIwarez 10:06, 4 May 2006 (UTC)
Hi, what you need is a software that can read image from pdf and save as text. Here is one OCR software Image to OCR Converter It converts image-only, searchable pdf and copy restricted pdf to text-only pdf. There are many ocr software available like the one GOCR mentioned above, but these OCR generally create searchable pdf but not a text-only pdf. I assume that you understand the difference between an image-only pdf, searchable pdf and text-only pdf. Please read: http://products.softsolutionslimited.com/img2ocr/help.htm#pdf_types here the questioner is asking for a pdf format that can be converted to any text based format or can allow copy paste of characters which in this case is only possible if he knows the password of pdf or if he converts it to a text-only pdf. Only text-only pdf can be converted to text based formats like word, doc, html etc. while searchable pdf and image-only pdf will only give you images. Searchable pdf lies somewhere in-between image-only and text-only pdf. So you can use text-only pdf of this software to use it as you like. Let me know if there is any other software that can convert image-only pdf to text-only pdf and not to searchable pdf which is of no use when performing copy/paste or pdf format conversion. I have used almost all available ocr and pdf to doc converters and this problem is quite frequent. Also, in regard to the solution posted by DIGIwarez, every pdf to word, doc converter may not be an ocr / text recognition software. You have to read spec of software or use the software to find it. Here idea is to convert images to text and as well as preserve to layout / text structure of pdf.
If β-particles are negatively charged, how can they stay inside the nucleus?
I think what you are trying to ask is how protons can stay in the nucleus together despite their mutual electrical repulsion due to their positive charges. The answer is that the nuclear force is a stronger attraction than their electrical repulsion, at that distance. StuRat 18:17, 4 May 2006 (UTC)
i recently heard that dieting DOES NOT reduce the amount of body fat.Then why do people recommend & follow it?
See http://home.howstuffworks.com/diet.htm for an excellent article on dieting -- Wikicheng 00:12, 5 May 2006 (UTC)
why does sugar mix well in hot milk than cold milk?
thanks!
Simple Answer: Milk is made of molecules that whizz around, bumping into each other. Sugar is also made up of molecules, but they are 'holding on' to each other, making them solid instead of liquid like the milk. When a milk molecule hits a sugar molecule, if it's going fast enough and strongly enough it will break the sugar molecule off the lump of sugar and dissolve it in the milk. The warmer the milk is, the faster the milk molecules whizz, and the harder they hit the sugar molecules. Also, as they are moving faster, they hit the sugar molecules more often. This means they break sugar molecules off more often, dissolving the little lumps of sugar faster. Skittle 16:01, 5 May 2006 (UTC)
Hi again, a U.K. committee set up by the government to look into the best ways to dispose of nuclear waste/materials recently reported the best way would be to bury it deep underground. That got me thinking - what would happen to it if we got it into magma, like a volcano, but instead of just tipping it in Mt Etna we dug down & put it into a deep underground magma flow? Would it burn up, at least partially, solidify underground in the rock, shoot right back up & create a radioactive volcano where we dug or just turn the lava radioactive creating radioactive rocks/volcano lava sometime in the future? Also would it be possible to do this given the pressure/temperatures involved? AllanHainey 12:47, 4 May 2006 (UTC)
Why does a black car absorb more heat than a white car when it becomes exposed to sunlight? Patchouli 14:08, 4 May 2006 (UTC)
So we see the reflected color, and thus for a black object no light is reflected. Also, we don't see IR and UV light because they don't get reflected.
Patchouli
17:45, 4 May 2006 (UTC)
Bees for instance can see the ultraviolet patterns on many flowers; you and I can not. -- Scienda 18:40, 4 May 2006 (UTC)
Einstein says that it's impossible to go at the speed of light, because the closer you get to the speed of light, you become heavier, time goes slower, and you get flatter.
But Einstein also said that speed is relative. You can't measure your speed unless you compare it to something else. When you're going 100 km/hr on the highway, what's really happening is your car is moving 100 km/kr relative to the Earth. When you calculate that the Earth is moving 1500 km/hr when it rotates, what's really happening is the Earth is rotating 1500 km/hr relative to the Sun.
So how can you say that you're approaching the speed of light if speed is relative? Jonathan talk 15:20, 4 May 2006 (UTC)
contradiction. – b_jonas 12:21, 6 May 2006 (UTC)
-User: Nightvid(unregistered)
Oh, I get it now! Thanks. Jonathan talk 14:47, 8 May 2006 (UTC)
Give an example of a mechanical collision in which energy gets dissipated even in ideal circumstances, that is, where energy dissipation is unavoidable due to the law of conservation of momentum. — Masatran 15:26, 4 May 2006 (UTC)
Isn't the molecular formula for the ionic compound aluminium fluoride Al3+(F-)3? I done it in chemistry today and it apparently was correct. However, according to the PubChem article, [13], it is simply AlF3. Which is correct, mine or theirs? Thanks, K ilo-Lima| (talk) 16:45, 4 May 2006 (UTC)
What is the name of the microscopic organism that looks like a tube, and moves by bending forward, placing its head(?) down, and bringing its feet(?) up; that is, it is upside-down(?) at every alternate step? — Masatran 18:00, 4 May 2006 (UTC)
Kinda like this?
___/ _____ _______ _____ \____ / / \ \
A physics teacher told me about it. I don't know what it is, but it works because of the order the segments move in. If you thought about it in terms of physics without considering the solution it is in, it would seem like the creature would get nowhere, however it works becuase the fluid at this scale is very viscous. Whenever it makes a stroke, it either has the other segment streamline or out. When it makes a forward stroke, the other segment is stream line, whenever it makes a backward stroke, the other segment is down and provides drag which limits the amount of backwards motion. Looking at the picture above, it starts in the s shape. The stroke with the front segment pushes the creature backward a little, but the other segment is down limiting its backward motion. The next stroke pushes it forward, and since the creature is streamlined compred to where it was in the first position it has moved a little ahead. And no I don't know what it is called. I wish I could help more... Sifaka talk 04:18, 5 May 2006 (UTC)
I have three places for my headphones to plug into the computer: one on my DVD drive, CD drive and another near the bottom of the computer, where a bit of the computer "lifts up" and there are USB ports there, too. The only place I can plug the headphones into and hear sound is from the one in the bottom. When I plug it into the DVD or CD part, near the drive, no sound comes out of the headphones. Why is this? And can I route it to the CD drive? Thanks, K ilo-Lima| (talk) 18:38, 4 May 2006 (UTC)
Which is more likely scientifically? Making contact with a Roger Federer serve or a Roger Clemmons pitch?
I've frequently heard that women are, in general, more suceptible to cold than men. (That is, to feeling cold, not to freezing to death.) Is this true? If so, what are the reasons for it. Thanks. -- SCZenz 19:02, 4 May 2006 (UTC)
I believe this is a simple surface area to volume ratio effect. That is, smaller objects lose their heat more rapidly than large objects. Women are typically smaller than men. Children and babies are even more susceptible to the cold, although their higher metabolic rate may compensate to some degrees. StuRat 23:29, 4 May 2006 (UTC)
I cant explain it, but my (male) hands are always warm, whereas girls hands i touch/hold are nearly always cold. am I alone in thinking this? -- Ballchef 23:50, 4 May 2006 (UTC)
Limiting blood flow to the extremities to preserve core body heat is not unique to women, men do this, too. However, if women are more often cold, due to their higher surface area to volume ratio, then this protection mechanism will be activated more often in them. Note that this shows they really are colder, it's not just a psychosomatic issue. StuRat 16:27, 5 May 2006 (UTC)
Another factor may be fat distribution. Slim men tend to have a rather even distribution of fat, while thin women tend to have fat concentrations in their breasts and butt. And, of course, evenly distributed fat provides for better thermal insulation. StuRat 16:34, 5 May 2006 (UTC)
Which is more correct 'Distillation is a method of separation of substances based on differences in their boiling points.' or ' Distillation is a method of separation of substances based on differences in their vapor pressures.' -- ∞ Dbroadwell 19:52, 4 May 2006 (UTC)
I've made a bunch of redlinks to braking rocket; there's already an article on retrorockets. I tend to gather that a "braking rocket" is fired during reentry and landing to oppose gravity and slow the fall, while a "retrorocket" is fired in orbit to lose angular momentum and allow a landing in the first place.
Is this accurate? Is there really a distinction in terminology and/or design between the two purposes, or am I just confused? Melchoir 20:24, 4 May 2006 (UTC)
I see. Thanks! Melchoir 00:41, 5 May 2006 (UTC)
Howdy! Why is it that immediately after coming indoors after spending some time in bright sunlight, everything appears to have a fairly strong green tint to it, that disappears after 30-60 seconds? Is there a fairly humdrum reason, or could it be something to do with the multiple ophthalmic surgeries I had as a child to correct fairly strong strabismus (two on the right, one on the left)? GeeJo (t)⁄ (c) • 20:25, 4 May 2006 (UTC)
Another thought, are you wearing greenish tinted sunglasses when outside ? If so, those would block the green light and make everything appear less green. When you remove them, everything would then appear more green by comparison, until you got used to it. StuRat 23:15, 4 May 2006 (UTC)
It's not your brain that adjusts, it's the cells in your retina. -- Username132 ( talk) 20:14, 5 May 2006 (UTC)
Geejo, I'm going to tack a rider onto your question, because I have a question about tinting as well. Speaking of glass tint (someone brought it up! someone brought it up!), y'know that strip of blue...uh...stuff?...that's at the top of most windshields? What is that for? What's it called? It doesn't seem to do anything for glare...the windshield article doesn't mention it at all. Cernen Xanthine Katrena 14:12, 7 May 2006 (UTC)
Outside my window in Charleston, SC, I see hawks circling a lot. They are rather large. The weird thing is that they are often chased and pecked at (in mid-air) by tiny black birds. The tiny black birds will pester the large hawks for a very long time. It makes no sense to me because the hawk is more than large enough to kill the tiny black birds with a single swipe of a talon. So, I wonder what kind of birds these little things are and why the hawks deal with them so patiently. Anyone have a guess? -- Kainaw (talk) 20:26, 4 May 2006 (UTC)
Do all chemical reactions recquire activation energy, or are there some that have none, and will decompose almost instantaneousley in normal conditions (or even extremely low temperature) lfor example possibly something like NeCa4 or NeC2, involving noble gases (I can't imagine those compunds are to hard to pull apart). If not, what is the bond with the lowest activation/bond energy. Thank you Philc T+ C 20:56, 4 May 2006 (UTC)
I've heard badgers are the species which have sex for the longest time, can anyone verify/specify? Thanks in advance!
Please God, in my next life, let me be a mink! Loomis51 02:14, 7 May 2006 (UTC)
Photon says "electromagnetic interaction is mediated by the exchange of virtual photons." Does that mean that there are constantly virtual photons exchanged between every pair of charged particles in the universe? If so, that is a lot of photons, and they last a long time. Bubba73 (talk), 23:10, 4 May 2006 (UTC)
In Australia, we have a current affairs "news" show called Today Tonight. now, this show is notorious for bullshit, but i wanted to know more about it's report on salmonella. they reckon around 70% of cooked chicken availiable here has salmonella. This would infer that around %70 of australian chicken eaters would get salmonella related diseases right? of course I've never come across any thing worth believing that says our chicken is unsafe. The explanation given on Today Tonight is that our immune system will fight the salmonella, but if we keep eating the chicken eventually our system will give up. I always thought that if we fought something once sucessfully, we would become immune to it! The story focussed on a bloke who is now in a wheelchair because he ate too much chicken, but i thought salmonella just made you quite ill. I read the wikipedia article on salmonella which says "In March 2006, The New York Times reported that the US government said that 16.3% of all chickens were contaminated with salmonella". and i havent heard of huge worries in the states either.
Thanks -- Ballchef 23:51, 4 May 2006 (UTC)
You always assume that the raw chicken is covered with nasty buggers, salmonella being very common. That is why the official 'cooked' temperature is much higher than beef. Well-cooked chicken has no bugs, and always use a neato very geeky electronic thermometer that beeps at you! -- Zeizmic 02:16, 5 May 2006 (UTC)
My house lays just under the approach path of a major international airport. Watching the majestic 747-400s flying over my house on their final approach is a daily pass-time of mine. I just wonder: what is their airspeed at 500ft of altitude?-- JLdesAlpins 00:24, 5 May 2006 (UTC)
An Hollywood's favorite: a guy shoots at a lock with a pistol and the lock shatters. Would a good quality lock break apart by being shot at in real life?-- JLdesAlpins 00:30, 5 May 2006 (UTC)
I'm sure this information is available on some wiki site(s), but I've tried, and I'm finding it difficult to find the precise site(s) to look for.
I would like to find out the top 10 Oil producing countries, in terms of barrels of oil per day produced, as well as the top 10 countries according to their potential production, i.e. the top 10 countries with the highest amount of petroleum reserves whether exploited or not, within their territories.
Some other pieces of information I'd be interested in would be:
1) At the current rate of consumption, approximately how long would it take to completely exhaust oil reserves (i.e. there'd be nothing left to pump) in such oil rich states as Saudi Arabia, Iraq and Iran in particular, and other states in the Middle East in general;
2) The degree to which Canada exploits its oil reserves, in relation to the degree to which these Middle Eastern countries exploit their oil reserves. (For example, if Saudi Arabia has 100x in oil reserves, and produces 1x per year, it's exploiting 1% of its oil reserves per year). What percentage of Canada's oil reserves are exploited each year? Thanks for the help. Loomis51 01:16, 5 May 2006 (UTC)
-- Mac Davis ⌇☢ ญƛ. 04:25, 5 May 2006 (UTC)
Thanks to all of you, the subject is obviously even more complex than I had originally thought. Loomis51 01:00, 6 May 2006 (UTC)
Can anyone tell me what causes metabolic acidosis in burn victims? Is it caused by the loss of bicarbonate during third spacing? Is it caused by inhalation poisoning such as cyanide? Or is it caused by hypermetabolism? What is the doctor looking for when he/she orders an immediate Arterial Blood Gas in trauma/emerg? What is he/she monitoring for when he/she orders ABGs later on in ICU or acute care? Thank you for your time! Student nurse in a current heated discussion with fellow student nurse.
I understand acidosis and how it happens but not in the pathophysiology related to thermal burns.
we have seen each law has some or other exxeptions or failure so is there any thing in this world that does not follow 2nd law of thermodynamics. If any body elaborate on this i will be very thank full
sujay
only to an isolated system (i.e., one that exchanges neither mass nor energy with its surroundings). It is my understanding that the law is true without exceptions within that context. All examples given above (statistical collisions of molecules and local decrease in entropy) assume exchanges of mass or energy, so they are not examples of the application of the law, nor do they provide 'exceptions'. -- Michel M Verstraete 20:44, 12 May 2006 (UTC)
Today, I accidentally got half a drop of super glue on my thumb and index finger, but fortunately pulled the fingers apart before the glue dried. I have the bad habit of biting pieces of skin off my fingers and then swallowing them, so that's what I did to the fingers which had a layer of dried glue on them.
I think I ate around 0.02 mL of Instant Krazy Glue. After biting my fingers, I noticed this message on the glue container: "If swallowed, contact a Poison Control Centre or doctor immediately. Do not induce vomiting." I have two questions:
Thanks everyone! -- Bowlhover 02:36, 6 May 2006 (UTC)
what is lga stands for in pentium IV 2,66lga ???
For all of the materials we now know about, do all of them have some degree of 'bendy-ness'? (bendability?)
If we have a diamond a mile long, could we measure the amount we could bend it and the force needed to do so? -- Kickstart70- T- C 06:18, 5 May 2006 (UTC)
Thanks to both of you, much appreciated! -- Kickstart70- T- C 16:33, 5 May 2006 (UTC)
Perfect rigidity is a violation of special relativity. It is no more possible to have perfectly rigid body than it is to travel faster than light. Therefore, yes, all materials are bendy. - lethe talk + 01:46, 6 May 2006 (UTC)
Does anybody know the best technique used to making a car from a mouse trap? there are heaps of websites on this topic but all are just trying to sell mouse trap car kits. so if anyone knows how to make one or if they know any good websites it would be very much apprecaited.
Thank you
hello may i know the definition of internet and world wide web and their uses
thank you
If my girlfriend and I had unprotected sex on the evening of March 6th/morning of March 7th, and her cycle started March 4th and apparently ended March 6th, is it possible that the aforementioned unprotected sex resulted in conception?
-Thanks, Jared
the above is completely correct but see to it that the next time you hav sex with your girlfrnd use a condomn and then enjoy it the better way.-priyanka
what happens if one travels at the speed of light? I know its impossible but i want to know
I would like to know how lighting fittings are manufactured. The process involved from sourcing the materials used to the final product. i would be grateful if the information could be broken down to specific lighting fittings. Also the what are the references of regular bulbs to low energy ones.
Why cant a plane mirror and a highly polished white surface produce reflection of the same kind?
Last night (may 4th), I was in a play. Right before I heard my cue line I was feeling really nervous. I also had some "butterflys" in my stomach. What I was wondering was what are these called (the butterflys) and why do they feel like that. I already looked at the article anxiety but to no avail. I was just curious. THanks. schyler 11:53, 5 May 2006 (UTC)
While I also learned a new word, it didn't really answer my real question. What is the name for the butterflys, not the name that butterflys is a symptom of. Thanks though. schyler 12:16, 5 May 2006 (UTC)
Since I was dissed, I have to go back to the original question. I looked up stage fright and that led me to that fancy name. I always thought that butterflys (ies?) was the only symptom. What we have found out is that there is no Latin name for 'butterflys' alone, except 'weird reaction by your second brain - itis'. (Geez, I feel like ol' Noti!) -- Zeizmic 17:35, 5 May 2006 (UTC)
English not providing you with all the features you need? Don't dispair make it up. If you want a pseudo-Latinate word for that squirty feeling, try combining some of these funky elements:
lepidopter- : butterflies, moths duoden-, abdomino-, ventro-, ileum : various gutty bits
Unfortunately most of these are suffixes but I quite like ventrolepidopter and I would tell people about them if I did not have them. Bonus word of the day borborygamiphobia, fear that someone will hear your stomach rumbling. MeltBanana 16:05, 6 May 2006 (UTC)
I heard a nuclear bomb has an energy efficiency of about 3%. Would this be increased if we divided the bomb's mass over on ten (or hundred) smaller, identical bombs, and set them off so that the blast waves were in phase upon hitting the target? For some reason I don't think that's what energy efficiency truly means, so does anyone have a better word for what is actually increasing? Scientifically correct, that is. "Blast effect" sounds a bit too... Star Trekish, but if that's the word, I'll go along with it. I just need to use correct terms. Thanks! 213.161.189.107 13:31, 5 May 2006 (UTC) Hen
If polycarbonate is not dried before it is extruded, will the mechanical properties such as impact strength be degraded as it goes through the extrusion process. If so how large is this effect and would it be more cost effective to dry the material and extrude it or just extrude it without drying.
The computers at my school (OS 9 iMacs) have all their internet traffic filtered at the server, so I need a method to bypass the filters? Basically, what I think I need is a proxy that does data encryption. Any suggestions?-- Frenchman113 on wheels! 18:52, 5 May 2006 (UTC)
I need to get a water flow of 100 liters/minute through a 12.5 mm nozzle. I will be pumping this from a 200 gallon tank at floor height through a short length of standard garden hose and out through the nozzle. I must pump this volume for a period of three minutes. I am trying to figure out what to use as a pump. I tried a standard sump pump that advertised a flow rate of 8600 gallons per hour but found my flow rate out the nozzle well short of the requirement I must meet. Do you have any suggestions? -- 12.19.235.34 18:58, 5 May 2006 (UTC)
When you're moving current no matter if its water or electricity, if you squeeze a large amount of it together then open it up in the direction it is going,it boosts the current. If you use a wider hose than a standard garden hose, more water will be putting pressure on your nozzle. This will increase the water pressure that is exiting your nozzle because the water has more space to move. Think of it as popping a paper bag. When you fill the bag with air it all wants out because there is too much pressure so it blows a hole in the bag. Your nozzle will act like the hole and release all the pressure. If that doesn't work you might need to consider a bigger nozzle.
I'm pretty sure you are talking fire-hose volumes here. Your sump pump could only do 2 gal/m or 8 L/m. City pressure at 40 psi might only get 12 L/m through a standard hose. You want another order of magnitude more than that. -- Zeizmic 20:37, 5 May 2006 (UTC)
Pump are designed to deliver either a large volume of water at low pressure, a small volume of water at high pressure or some trade-off in between. When you purchase a pump it will often have a small table listing how many gallons per minute it will deliver at a certain pressure. You can estimate the pressure required at the nozzle to give you the required flow rate using the firefighters formula: gallons per minute = 29.7 x diameter in inches squared x square root of the pressure in pounds per square inch.
So you need around 14psi at the nozzle to flow 26.4gpm. That is if you are using a tapered smooth bore nozzle--if you are pumping directly out of a 1/2in pipe the pressure required will be slightly higher. You also need to take into account your "short length of standard garden hose". Trying to move 26.4gpm through a full 3/4in inside diameter hose you will have about 60psi friction loss per 100 feet of length [18]. Standard 3/4in or 5/8in garden hose will be even worse. You will need a pretty large centrifugal pump to push that amount of water through any length of small diameter hose like that. (Forgive all the non-metric units, i'm too lazy to convert them.) EricR 01:18, 6 May 2006 (UTC)
I was wondering how it could be that a pole in the ground serves to conduct electricity to 'earth'. I mean, the concrete or soil or whatever it is that the pole is inserted into, isn't going to be electrically conductive is it? If I rectified mains electricity, and connected the negative terminal to a pole in concrete, wouldn't the pole just fill with enough electrons to eventually stop the current? -- Username132 ( talk) 19:49, 5 May 2006 (UTC)
How possible would it be to have wikipedia on a DVD-RW that was able to update itself when put into a DVD-RW drive on a computer with internet access? How long would it take to make such a thing happen if you knew how to program? When can I expect to see self-updating Wikipedia on DVD-RW? -- Username132 ( talk) 20:31, 5 May 2006 (UTC)
What is the name of the space-time theory where all three time-periods (Past, Present, and Future) are all occuring at the same time? That is to say, as I sit typing this, I also sit thinking it up, and sit drinking my coke after submitting. Thanks! Here7ic 20:41, 5 May 2006 (UTC)
This is probably a very simple question, but it occurred to me while doing some reading today. We know that one can remove the nucleus from one cell and replace the nucleus in another cell ( somatic cell nuclear transfer) and it will (if you are lucky) develop normally. Does this work if the two cells are from different species? I imagine it would not work between animals and plants since their cells contain different organelles, but what about animals with high degrees of relatedness (i.e. a chimpanzee and a human)? Has anything like this been attempted (I assume not with humans, of course, but dog/wolf wouldn't surprise me if it had)? If not, should it work? -- Fastfission 22:36, 5 May 2006 (UTC)
Are there such things as yellow ants? Sort of translucent like honey? -- HappyCamper 22:40, 5 May 2006 (UTC)
Though it seems to happen often enough in movies and is commonly used as an expression, is it plausible that a large segment of the human population would react to extreme fear by experiencing incontinence (either fecal or urinary). My understanding is that strong anxiety makes it dificult to urinate, so if anything, people who are scared should find it near impossible to urinate, and not the other way around (I assume the same rules apply to defecation). To be blunt, which is the more plausible outcome, being "scared shitless", or "shitting your pants"? -- Aram գուտանգ 03:46, 6 May 2006 (UTC)
I'm guessing the defecation and urination fear response is a protection mechanism against predators. That is, once you do that, you no longer smell like food to the predator, so it might let you go. Our instincts might be sufficiently vague that any extreme fear causes this, however, not just predators. I recall a nice pick of a bungee jumper with an impressive brown streak up the back of his shirt (he was upside down, of course, when this happened). StuRat 22:01, 6 May 2006 (UTC)
Well, the losing weight and predator repulsion explanations make sense, but what I'm really wondering about is whether people actually piss/shit their pants when they're scared in real life. Since paruresis is caused by anxiety, it doesn't matter if it's anxiety caused by fear, or performance anxiety. Are there any documented cases of people experiencing incontinence when scared, where fear is the only cause for it, i.e. they haven't been holding it in for a long time, or they haven't found themselves suddenly to be in freefall. Also, is there a term for it that's better than "fear-induced incontinence", because this is a difficult subject to search for without key terms. -- Aram գուտանգ 00:45, 7 May 2006 (UTC)
I can assert, through personal experience, that a person in imminent danger of drowning (surely, a situation involving real fear) can defecate involuntarily. It happened to my daughter, then 13, before I and my brother-in-law rescued her. G N Frykman 17:43, 8 May 2006 (UTC)
I remember reading something that said something along the lines of when your body is experiencing extreme (performance, assumedly) anxiety, it does not want to bother with many less-important processes such as digestion, and so it simply voids the body so it can focus on immediate survival. Sounds very plausible to me. -- T. S. Rice 03:28, 13 May 2006 (UTC)
The 3 wires that run to my house from the power lines are two hot and one neutral wire. The ground wires in my home electrical system are connected literaly to the earth via a ground rod which runs a certain number of feet into the ground. My questions refers to the neutral wire. When I plug a lamp into an outlet, the AC voltage moves back and forth 60 times per second, and electrons flow back and forth through my lightbulb giving up their energy as light and heat, and in turn this voltage is running through the neutral wire as well - does it run all the way back to the power station? Is it connected to a huge ground rod? Why can't I just use my ground as a 'neutral' wire? Aren't some neutral wires actually attached to the ground buss in the panel? (Not in Canada)
If anyone can help me understand this, I'd appreciate it.
CW
60.241.30.237 06:44, 6 May 2006 (UTC)
I've seen a few books and web sites out there that say that the humans cannot absorb more than 10 grams per hour of fat from the GI tract. Where does this come from, and what type of experiment (if any) was done to determine this? Experiments which I have undertaken on myself seem to suggest otherwise. -User: Nightvid(unregistered)
I yawn, my parrot yawns. My parrot yawns, I yawn. I see a dog in the street yawning, I yawn. I yawn near my mother's cat, my mother's cat yawns.
etc.
Why can a yawn be transferred from species to species like this? I've read the yawn article and it mentions that it can be 'interspecific' in it's contagion but it doesn't explain why. Anyone know? Thanks.
There was an episode of
Mythbusters about yawn contagion.--
Sonjaaa
13:51, 6 May 2006 (UTC)
The consensus among people whos study this stuff seems to be that yawning really is contagious. A reasonable explanation, it seems to me, would be mirror neurons, neurons that respond to behaviors observed in others by performing exactly the same. (This explains why you wince also when another person steps on a thumbtack. However, the first Google result for "yawning contagoius" claims that a 2005 study using fMRIs found that the mirror neuron system was inactive when viewing videos of other people yawning. That would seem to indicate that some other system is at work, though probably still one that does depend on some degree of social and self-awareness as humans and chimps are the only species believed to exhibit contagoius yawning. If you want a slightly longer answer without having to wade through the scientific articles, you might want see this guy's blog. BTW, the result of that Mythbusters segment was "CONFIRMED," if you were wondering. - Wiccan Quagga 05:09, 7 May 2006 (UTC)
Well, this may be a stupid question, but as the saying goes... How is it that animals who produce toxins are typically immune to them? I understand how, from an evolutionary POV, it's obviously beneficial for an animal not to be susceptible to its own species' toxins, but I was wondering how this is typically accomplished. How are scorpions who secrete neurotoxins not affected by them, for example? Do they have substances in their blood which break down the specific neurotoxin they use before it can harm them, or do they actually have a biological makeup which renders the neurotoxin ineffective? Are all animals who are broadly venomous to other species immune to their own toxins? 82.92.119.11 09:29, 6 May 2006 (UTC)
Supposing you had to off a someone who happened to be an insulin-dependant diabetic, preferably without getting caught. What if you were able to remove the insulin from one bottle and replace it with a glucose solution, put the spare bottle in the microwave and then replaced them both where you found them. How long would it take for the glucose to have its effect, and would it be fully lethal? Obviously you'd need to dispose of the glucose-containing bottle, wash out the syringe, maybe take up some denatured insulin into the syringe and perhaps wipe the point of injection with some damp cottonwool to remove and traces of glucose. What would be left for forensics? They'd check his blood sugar and it'd be through the roof... would this look suspicious? How about if the glucose solution also contained some alcohol... would they check stomach contents? -- Username132 ( talk) 11:14, 6 May 2006 (UTC)
I would like to know the effect of connecting the wrong phasing power supply to the UPS in the telecommunication base station. Explaination with diagram would be very helpful. Thank you
I think his question was about wrong phase sequence. That is, what happens if one connects RBY to terminals marked RYB (R-R,B-Y,Y-B instead of R-R,B-B,Y-Y) of an UPS (doesn't matter were the UPS is used) -- Wikicheng 08:42, 8 May 2006 (UTC)
Yes, Wikicheng is correct-what is the effect if the supply connected to the UPS is in the wrong phase sequence RBY instead of RYB.
Would it be correct to say (as a general conclusion for relationships among correlations/ Pearson correlation) that if X is related to Y and Y is related do Z, that this necessarily means that X is related to Z? -- 4.155.249.93 17:04, 6 May 2006 (UTC)
I would be interested in a recap or summary of the latest communications technology that includes such devices as the internet, telephone linkages, digital photography etc., and what these actually do in the real world. Thank you
Obviously, we all know that solutions to Schrodinger's equation is called wave functions. In convention, we call "a one-electron wave-function" a orbital. NOW, if orbital is essentially a mathematical description of the behavior of one electron, then why on every orbital we can have 2 electron filled up?
Thanks
I am curious about this. My guess is that they do. But it may depend, which is why I am asking. Thank you-- Ķĩřβȳ Ťįɱé Ø 18:40, 6 May 2006 (UTC)
A 5500kg helicopter accelerates upward at 0.50m/s² while lifting a 1200kg car. What is the lift force exerted by the air on the rotors? What is the tension in the cable that connects the car to the helicopter?
I drew my free body diagram and this is what I got for the two equations:
Helicopter
ΣFy = ma FA - FG1 - T2 = m1a
Car
ΣFy = ma T1 - FG2 = m2a
FG1 being 9.81 x 5500, T2 being 0.5x 1200, T1 being 0.5 x 5500, FG2 being 0.5 x 1200
My problems lies here. I need something to cancel out so I can solve for FA or T, but nothing cancels out. T1 and FA are the same the force, and so are FG2 and T2, and I've tried going FA - FG (total) = m1a and FA - FG2 = m2a but I that didn't give me the right answer either. I think my problem may lie in the fact that I have acceleration as FA. I've noticed that in some questions that we have done that acceleration is sometimes FA, and sometimes isn't included at all on that side of the equation. Anyone know why? Now as I think about it I don't even know why I have a T1 and T2 and not just T... I am really unsure here. Thanks. C-c-c-c 19:34, 6 May 2006 (UTC)
Okay, problem seems to be firstly that you've got these two different tensions, and then made some unfounded assumptions about what they should be equal to. Just set them both to T, and then solve for FA by adding the two equations:
FA - FG1 - FG2 = m1a + m2a
or as I'd prefer to write it,
FA = (m1 + m2)(a + g)
That gives you FA, which (no surprises) is enough to counteract gravity and provide the upward acceleration, for the combination of helicopter plus car.
Also you have
T = m2 (a + g)
In fact it's an important result that an upward acceleration and a gravitational field have an equivalent effect, so the a+g in the answers is no surprise.
I'll leave you to put the numbers in.
Arbitrary username 20:43, 6 May 2006 (UTC)
My question: when did we start "knowing" that the stars in the night skys are actually very distant stars? The star article itself is severely lacking in the cultural and historical prospect... Anyway after a bit of searching now I know there was this Nicholas of Cusa who proposed that stars are suns, though obviously he would not be able to "prove" his claim. However nowadays everyone regards this idea as a fact. So when and how people "prove" that stars are in fact suns very far away but not lamps embedded on the celestial sphere? Thanks! -- Lorenzarius 19:48, 6 May 2006 (UTC)
Is it considered a fact that the majority of trees over 30yrs of age produce more carbon dioxide than oxygen? 60.226.90.64 22:05, 6 May 2006 (UTC) JAG.
The article "Breath" says that we inhale and exhale the same amounts of Nitrogen, about 78%. Obviously, at least to me, we're not absorbing it. Does this demand a natural defense mechanism, or is it rather the lack of anything for the nitrogen to bond to? (Mixed answers are thus fairly acceptable) THANKS! This is such an amazing resource, and that's just the articles on their own.
What is the difference in time during the existance of the universe as we know it today and since the Big Bang and anytime prior to the Big Bang? -- PCE 00:22, 7 May 2006 (UTC)
When a new celestial object is discovered, it is immediately given a specific name (at least in English...its name in other languages may be different). I understand that our planets have been named after Roman gods, but this goes back to antiquity. I also understand that certain planets' moons are named according to a theme, for example (forgive me for forgetting which one) one planet's moons are named after Shakespearian characters. But that is also an old tradition. (Also, it seems pretty anglo-centric...are those moons named differently in different languages? For example in Russian are they named after characters created by Russian authors?).
What I'm really getting at though is, say a comet is discovered, or a new extra-solar planet. What organization or body is it that seems to have the authority to define these objects' names? Loomis51 02:04, 7 May 2006 (UTC)
This is for Americans. Does anybody know what anti-counterfeiting purpose it serves to make our money pink? Black Carrot 02:57, 7 May 2006 (UTC)
well, why not pink? who says green is the definitive colour for money? surely you don't think that people might think your gay if you pay with pink money, do you? that would just be tragic!
(this comment was added by someone who doesn't know how to sign their own name)
Does anybody know the technical term for the "red-eye" effect in photography? I thought that it began with "hemo-", but I might be totally wrong. Please, please, please, if anybody knows, I'd greatly appreciate it. (I doubt that I'll be able to sleep until I find out!)
Many evolutionary scientists have criticized and refuted the arguments given for Intelligent Design.Well, how have Michael Behe,William Bemski, and other advocates of Intelligent Design reponded to these criticisms?
How the Indian Almond look like? Is it called 'chinabadam' in Bengali language?
does sugar have a refractive index?
Is there an existing material that can travel faster than light?Does wikipedia have an article on it?i would love to check it out
--thanks
This means that perhaps in the future the topic could lead to faster than light communications/information transport for teleportation. Turtleboyxtreme i do not know when.
i know that human eyes cannot detect UV rays.but is it possible to have any sorta eye surgery so that our eyes can spot UV rays without any damages?
Remember that UV radiation carries a lot of energy per photon; in fact, enough to be damaging to living tissues. Life as we know it today, above the ocean or soil surface, would not be possible without the ozone layer in the stratosphere that absorbs much of the UV coming from the Sun. By and large, there is relatively limited exposure to UV at sea level (just enough to tan...), but exposure does increase either with altitude or in regions located in the so-called ozone layer. -- Michel M Verstraete 21:17, 12 May 2006 (UTC)
Some human children can see into the UV spectrum but eventually lose the acuity. Children can generally hear higher pitches than adults as well- call it ultrasound based on being above the arbitrary mark of pitches most adult humans can hear. -- 151.151.21.100 20:54, 2 August 2006 (UTC)BEN 8/2/06
I'm writing a story that involves a crashed spaceship, among other things, and originally I just had SAS soldiers securing the site (plot device to get my characters there). It occurs to me that the government would also send scientists to investigate it. After all, that's what they do in movies and so on.
But exactly what kind of scientists would be sent? I can't imagine we have too many people lying around with a degree in extraterrestrial technology study.
IN THE NAME OF HOOLA, there's edit conflict for a reason! Don't just delete my article like that! *hrm*... now. Humans see roughly from 400nm to 700nm waves (IIRC). First of all I would like to ask: If we could see from, say 300nm to 800nm, would we perceive the colours as the same, but "spread out", ie seen only a stretch? Then there is another, bit tougher question: Some animals are bound to have different spectra, what are the lowest and highest wavelengths that some animals can perceive in vision, that we know of? Manymanymanymany thankseses. :)
Who's Hoola and why don't we have an article on his/her worship? alteripse 16:28, 7 May 2006 (UTC)
Okay, this'll probably get me banned from the reference desk. Let's pretend there's this traffic light at an intersection that never works properly, and despite the amount of protests and complaints to the state transportation (and whomever deals with transportation in the county, as well), nobody has come out to fix it. Let's also pretend that I'm fed up with said traffic light and wish to perform malicious action on said traffic light to force the DOT to come fix the damn thing. My question is, what would send a clear message and not allow me to be caught (hypothetically): a localized electromagnetic pulse (and how would one construct a device to do that)? A small explosive? It would, of course, be mounted on the control box. Cernen Xanthine Katrena 13:25, 7 May 2006 (UTC)
Perhaps you could do it the
old-fashioned way? --
Crucible Guardian
23:29, 7 May 2006 (UTC)
Well. I don't think I could detonate a nuclear warhead (my insurance doesn't cover fallout from even accidental detonation of a nuclear device -- what a load of crap, hm?). And so much for the emp grenade. I could hit it with a sledgehammer, but there's a 7-11 right in front of it (which means that I can be caught...). It's not the lights I want to damage, it's the control box. They'll have to send a technician instead of just a repair crew, it'll be costly, and painful, for the county to do that. I was thinking of hitting it with the sh*tmobile...do you think a vehicle accident would take one of those puppies out? After reviewing a wikibook on thermite synthesis, I think I may have my answer, but the question is, is such a reaction simply incendiary or explosive? Cernen Xanthine Katrena 10:15, 8 May 2006 (UTC)
Yeah! Vandalism is the answer to real life problems as well as Wikipedia problems! -- Ginkgo100 15:59, 8 May 2006 (UTC)
I'd get three large stickers, one with "green" written on it in text (it doesn't matter what color), one with "orange" (or "yellow" if you wanna be nasty) and one with "red". Climb up the pole and stick them on each of the lamps, but not so much as to obscure the actual light, so that all the people that weren't colorblind wouldn't get confused.
You wouldn't cause enough damage to get into trouble, but your government would be enclined to set things straight, and there'd be a good chance they'd fix the other problems while they were at it.
Also, it helps if you live in one of those towns that has horizontal streetlights, like
Montreal, which would make it even harder for the dumb colorblind people to tell which was which.
freshgavin
ΓΛĿЌ
07:07, 10 May 2006 (UTC)
carbon isnt necessary for human survival,yes.But is it that carbon is needed atleast in little content in our bodies?or maybe i am wrong?If not,what are the diseases caused by deficiency of carbon?
--thanks!
--yes,as a matter-of-fact i was reffering to pure carbon and not carbon compounds.thanks!--the same person who asked the question:)
No, your body cannot do anything with pure carbon, however in cases of drug overdoses, paramedics often deposit activated carbon inside a patient's stomach to absorb the toxins -- Crucible Guardian 23:25, 7 May 2006 (UTC)
I have recently received a computer [for free] from my father’s company. He didn’t want it, so now it’s mine :P. I have a weird problem though: every time I turn it on, the computer asks me to log in with a username and password. FWIW, the computer runs on Windows 2000 Professional. I’ve tried to get around the login by going into safemode and whatnot, but it always ends up on the login screen. Even if I type in a legitimate username and password, I can’t get through, because the computer is making a vain attempt to connect to a server that no longer exists. My question is this: is there a way for me to disable the network login without being able to bypass the login or having boot disc for Windows 2000? Perhaps there is a way to get into DOS upon startup and disable networking…?-- The i kiro id ( talk)( Help Me Improve) 16:44, 7 May 2006 (UTC)
With old corporate, networked PC's and laptops, the only answer is to go to Linux. First, for a corporation to give it away, it has to be really old! Second, the corporate IT-jocks have probably really done a number on it, for 'security'. I've had lots of success with those throw-aways and Linux. -- Zeizmic 23:45, 7 May 2006 (UTC)
Then you are attacked by the proverbial helical inclined plane. -- 192.75.48.150 12:13, 8 May 2006 (UTC)
Diamonds: How many are consumed by the United States AND How many diamonds are extracted in the United States?
Thank you so much.
My stepdaughter has been trying to find information on the history of Health Screening (as we are in the UK, I suppose with a UK bias) and has had little success. I too have tried and not really found anything. Could someone please point us in the right direction or give us some information. Many thanks. emjay----------
I had heard about fullerene, and learned a few thing about it, but never seen it until I saw the wiki article on it, where it shows the compound in crystalline form. I thought, how is fullerene bonded as a solid, was this at extremely low temperature, or is there a bond between the balls, or what, are they held together by Van der Waals, if that is possible. If they are, how can they stay together at high temperatures. Also the same question about buckminster fullerene, as that has Carcons with only 3 bonds, which would make inter molecular bonds possible (wouldn't it) so is that bonded differently? Philc T+ C 18:46, 7 May 2006 (UTC)
hi, now that its estabished that people are gay through nature rather than nuture, does anyone know whether there was definitive study that drew this conclusion or was it more a set of smaller ones that tended towards it? if anyone could direct me to them then that would be great. also, i would appreciate it if bigots wouldnt post their vitriol here... thanks! andrew
Homosexuality is most definatly not caused ONLY by genetics. Several studies on identical twins have been done that show that genetics probably plays a roll, but if genetics were 100% responsible for homosexuality, the percentage of twins that had the same sexual orientation would be 100, but it is not even close. It's more like 40-something. -- Crucible Guardian 23:20, 7 May 2006 (UTC)
Are petroleum distillates absorbed through the skin? I'm having trouble finding out information. If they are absorbed, what is the effect on the body? KeeganB
I'm talking about the kind in furniture polish. KeeganB
Oh, nevermind, I managed to find the MSDS. The answers is no. I'm such a fuck up. KeeganB
This post claims that someone with only 1 cubic mm of brain tissue functioned normally, and a search for the professor mentioned in the post reveals similar stories. Do you know if this has ever been published anywhere reputable, or is it just a spontaneously generated bit of wishful thinking?
Whatever happened to this story? Seems to have fizzled out. JianLi 00:56, 8 May 2006 (UTC)
it's really cool anyway
If a valveless pulsejet were to be built with a cruved pipe, with out a camber and increasing or decreasing pipes, would it still work? Patrick Kreidt
Why do most medications have HCl in their formulations?
does co2 in a plant travel through xylem, phloem, or...?
ok. the longer explanation follows. im taking the bio ap tomorrow, and my teacher gave us a take-home open-note (and internet, but not fellow student) test on the last section we'd need to know for the ap. one of the questions was: "If radioactive CO2 is supplied to a mature leaf of a plant, it is often possible to detect radioactivity in the young growing leaves of the shoot apex a few hours later. In which tissue did the radioactive compound(s) travel? a. phloem b. xylem c. stomata d. cortex e. pith"
I'm @$&# near positive it's not cortex or pith because that wouldn't make any sense and pith doesnt even really fit in the whole picture. i know the stomata accept the CO2 and transpire away water, so i was thinking the xylem would carry it, because it doesn't seem to me that the stomata, being small, single cells, could be the "tissue" (if they're considered tissue, which I think they're not)in which the compounds "travel." sorry i didn't elaborate earlier, and thanks for the help
thanks
i am a highschool junior who has enjoyed science for years but has no particular affinity or interest in pursuing it heavily in college or as a job. so i signed up for the harder of two AP physics courses at my high school, which i'm supposed to take after learning calculus, when i haven't yet learned calculus (i'll be doing it concurrently), because the other course doesn't sound as interesting. i'm excited, but the course is supposed to be really tough, and i want to prepare as much as possible for it over the summer. any books anybody'd suggest i read to help me with understanding the physics (or calculus) basics? if i was just to try to learn physics basics on wikipedia, how should i go about doing that? they have a "where to start" section, but it didn't help much because i have no idea what i'm looking for. thanks so much to anyone who can help
im taking the bio ap tomorrow. good luck too and thanks to both of you
The chief cells of the the parathyroid glands produces a hormone that does what?
parathyroid hormone (it's a wikipedia entry) - increases blood calcium levels, wheareas calcitonin (in the thyroid) decreases it
I've heard that light is the fastest thing in the world and nothing travels faster than it.But instead of saying that light is the fastest thing in the world, why don't we say that light is the thing that's known to be the fastest thing in the universe?I mean, what if there are things that travel faster than light, but it's just that they haven't been discovered?User:Bowei
What is the NGV.gas?
i have heard that a duck's quack does not echo.Is this true?If yes why?
Just "suppose" I want to transmit 10 Mbit/sec of data across, say 30km of line of sight at microwave frequencies. First, what bandwidth of spectrum would I need? Secondly, what is the typical cost for receiver/transmitter/microwave dish/etc for the pair that are needed (one each end), excluding any masts and installation. Thank you.
hey 2 all!
In order to understand my question: Rotate your right foot in clockwise direction while sittin.Simultaneously draw the number 6 with your right hand in air.You will find that your foot has changed its direction!
Now my question: Why the hell does this happen?????
Mac, please Don't bite the newcomers
Anonymous, this is because the brain is conditioned to do things in certain (easy) way. This applies to any new skill you learn (like playing piano, juggling the balls or rotating your parts in the way you discribed). You can overcome this by practicing the act slowly and repeatedly.-- Wikicheng 11:54, 8 May 2006 (UTC)
Is it just me, or is this exactly like a question that was asked a really long time ago [23]? Black Carrot 23:28, 8 May 2006 (UTC)
who is the giant spagetti monster god
When we observe stuff the wave function collapses but why?
I recently bought a new Dell Dimension 9150 and it works great, except for one problem: my TV tuner card (Pinnacle PCTV 310i DVB-T) is able to scan for channels, but no channels are ever found. I am quite sure that this is some kind of incompatibility between the PC and the card, because the card worked properly in my previous PC. Any suggestions on how to solve the problem? I have search the Internet, and it appears to a be quite common problem. Thanks in advance. -- Andreas Rejbrand 15:27, 8 May 2006 (UTC)
The Prypiat, Ukraine article claims that it "will take up to 900 years to decay sufficiently to render the area safe" while the Chernobyl disaster article says "rendered land in a radius of hundreds of miles from the plant uninhabitable for at least 100 years." Both are unsourced and many similar unsourced claims appear on Google. Which is correct? How long will it take for the more contaminated areas (excluding the plant itself) to get back to about background levels? Cesium is the major radiation source and has a half life of 30 years, so in 900 years, only 1/10,000,000th of 1% would remain. The map in the disaster article shows the most contaminated areas at "greater than 40 curies per square kilometer" and the background radiation article says that average it is about 2.5 mSv, but there seems to be no way to compare those numbers. Rmhermen 15:42, 8 May 2006 (UTC)
Are ther eany types of chemical reactions that are not redox reactions? They teach about redox reactions as if they are special, but I can't think of any reactions that aren't redoxes. Maybe I'm not thinking hard enough?-- Chris 15:37, 8 May 2006 (UTC)
I Verify the above; while there may be some exceptions,substitution and condensation reactions are not redox reactions. -- Craiglen 16:42, 8 May 2006 (UTC)
A variety of other types of reactions can be found at chemical reaction, or you can look at Category:Chemical reactions for many more examples. -- Ed ( Edgar181) 16:48, 8 May 2006 (UTC)
Do all birds lay eggs? I seem to remember from my college orinthology course that there are some species of birds that do not lay eggs? I got $5 riding on this with a friend so if you can prove him wrong. Even if you have to stretch the "truth" a little, that'd be grrrreat.
Maybe there's a kind of bird that doesn't lay eggs, it just merely excretes them, or perhaps shoots them out at high velocity. freshgavin ΓΛĿЌ 04:22, 9 May 2006 (UTC)
Kind of a weird one here...the other day I went for a CT scan of my sinuses, and during the procedure I saw strange blue lines moving up and down my vision (eyes closed). Of course I was supposed to keep still, but the appearance of these startled me, and I wondered...if these are seen by many people, why don't they warn the patient? If they aren't seen by many people, what's different about me? -- Kickstart70- T- C 17:21, 8 May 2006 (UTC)
Diesel engines have been hybridized with electric engines in trains, why haven't car manufactures spent money in putting the efficient diesel-hybrid engine technology into cars?
1. Wouldn't the diesel aspect gives cars the ability to be manufactured for biodiesel, therefore using a renewable resources?
2. diesel engines work on compression and therefore theoretically can last longer, right?
3. hybridizing this with an electric engine would create a relatively clean engine that runs on renewable resources, wouldn't this be a smarter alternative to today's engines?
Why is it that car manufactures haven't built a car around a biodesiel-electric hybrid engine?
This type of engine (diesel-electric hybrid) has been used in trains for almost a centuary, it's efficient and robust, provides a lot of power (it drove trains) and it would use renewable resources...
-- Stewart Alexander --
A gas hybrid saves 20% in the city, and almost nothing on the highway (air resistance dominates). Current diesels already exceed that, but are dirty (I saw a brand new Jetta TDI belching!). New low-sulphur diesels should be much cleaner, so right now, a diesel hybrid doesn't make much sense. -- Zeizmic 21:37, 8 May 2006 (UTC)
I need some help from someone good with Visual Basic.NET edition, as I learned to program in VB6, and I'm having a couple of problems with my .NET coursework project, and as usual trying to get a relevant answer out of MSDN is like trying to squeeze water from a stone.
PrintLine(1, txtIDNumber.Text, ",", txtSurname.Text, ",", txtForename.Text, ",")
"123, Smith, John"
Do While Not EOF(1) lineoftext = "" lineoftext = LineInput(1) * textarray = Split(lineoftext, ",") If textarray(0) <> txtIDNo.Text Then PrintLine(2, lineoftext(1)) End If Loop
Is it possible that organisms could live with an element rather than carbon, i.e. silicon? Could it work hypothetically?
Thanks!
AHa, thanks for that :D
i was thinking how much of an advantage/disadvanatges would there be to putting communication telescopes (like the deep space network) in the artic/anartica? i mean all the equipment will be kept cold easily, your a long way away from any man made sources of interfernce and u could in theory point the telescope in any direction, are there any other things i missed? and what problems are there?
If you want a neutrino telescope that requires a mile of ice for detection, then Antarctica would be a good place to build it. Which is why our neutrino telescope is in Antarctica. - lethe talk + 03:29, 9 May 2006 (UTC)
If I know someone's IP Adress how do I find out who it is? Someone insulted my friend and all I have is their IP Address. Þanks *Max* 21:25, 8 May 2006 (UTC)
Do hospitals give people who already have HIV/AIDS blood from other HIV positive people? A Clown in the Dark 22:39, 8 May 2006 (UTC)
If I remember correctly, in And The Band Played On, it states that blood banks generally love lesbians, because they tend to have the cleanest blood (esbians almost never contract blood-born STDs). Raul654 03:10, 9 May 2006 (UTC)
All the quasiturbine needs is an improved method of lubrication so that it will survive for more than 24 hours and according to its inventors its efficiency and capacity to use alternative fuels will be so high that the price of gasoline will plummet so low that there won't even be a reason for building gasoline pumps with meters. -- PCE 00:05, 9 May 2006 (UTC)
Hi You must have a large coil of wires moving through a magnetic field, which could be normal magnets or produced from electromagnets. In large scale (power plant generators) - does each generator have a Huge magnet built in or do they have electromagnets? if the later is the case where did they get the electricity from in the first place - isn't this a case of catch22?
If I remember correctly, to start with, they use the permanent magnets of low strength to generate some electricity. A part of this electricity is used to power the electromagnets, thereby increasing the magnetic field and hence the generated current. This goes on till a balance is reached. Please note that this is a kind of negative feedback and hence has to reach a atable state.-- Wikicheng 08:08, 9 May 2006 (UTC)
Also, this is why they price electricity differently if you buy it at low peak. As you can imagine, start-up of a large electric generator is a big deal, so it is better to keep it going as steadily as possible, continuously. This means that if you're going to produce enough power for people at peak times, you have to produce too much at other times even if nobody will buy it. Skittle 09:23, 9 May 2006 (UTC)
Typically I'd think its a permanent magnet. Likely a simple hard ferromagnet dug out of the Earth, it wouldn't be an electromagnet because if you think about it, if you could use the electromagnet to power a generator, then simply feeding the electricity back into the generator would produce more electricity -- violation of entropy and the conservation of energy. Soltans 23:07, 15 May 2006 (EST)
Greeting Wikipedia -
What is "ecosystem evolution" ? What evolutionary / game - theoritic mechanisms or principles apply ? What book describes the evolution of ecosystems ?
Thank you, Willie
Thanks for the advice. - Willie
Hey. I'm currently on a 802.11g Wireless Network. My computer connects to a router that has a cable modem plugged into it. Every so often, my wireless network connection will still show 'connected', but all network traffic will stop working (including intranet file sharing, local apache servers, internet, etc.). The only way i can fix this is to 'repair' it in Windows (right-click on the icon in the tray and click 'repair'). What in the world is going on, and how can I fix this (and if I can't fix it easily, how can I get my internet working without having to click repair?). It's happening multiple times a day, and it's getting annoying. — Ilyan e p (Talk) 01:58, 9 May 2006 (UTC)
Could be classic Windows Spyware Router Choke. -- Zeizmic 11:48, 9 May 2006 (UTC)
Something similar used to happen with mine, before I upgraded to SP2. Theres an article about it here, with some possible workarounds. There might be some other useful stuff here as well. Hope it helps. CaptainVindaloo 16:56, 9 May 2006 (UTC)
I use both a WEP key and 'only allow trusted MAC addresses'. Plus, I'm pretty sure it's not my modem since only repairing the wireless connection in windows seems to fix it (and the internet works on the other computers meanwhile). I'll check out the links that captainVindaloo posted shortly. They appear to be for pre-SP2 and I have SP2. Thanks for the help and let's hope it works. —
Ilyan
e
p
(Talk)
20:30, 9 May 2006 (UTC)
Also, Spyware can do that? I'll run a scan but i don't think there was anything on my PC. — Ilyan e p (Talk) 20:31, 9 May 2006 (UTC)
A couple of points here. WEP uses cryptography which was very poorly planned and as a result is easily breakable. It should therefore, be regarded more or less as a speed bump to attackers, not as a serious barrier to them. WPA (partial 802.11i) and WPA2 (more complete 802.11i) are MUCH better, but not available on all equipment, even with a firmware upgrade. If this is your plight, protest to your vendor... But, good quality crypto is the only possible way of defeating the security leak inherent in all broadcasting methods -- eavesdropping. Only if you force them ot cope with gibberish they can't convert ot something intelligible can anything going either direction be thought even remotely confidential.
Denial of service attacks are relatively easy to manage for 802.11 networks, most especially for Infrastructure mode (ie, when using an Access Point). These have nothing to do with cryptography (WEP, or 802.11i (partial or not)), but rather to do with the underlying management of the medium and with the realities of low power radio communications. Using 802.11a forces a penalty in range (roughly half that of the lower frequency 11b/g) but, by providing more, and less overlapping, channels, removes at least one of the possible denial of service attacks.
Wireless is not, though it can often be used as if, really securable. It remains vulnerable to many attacks, accidental and deliberate, even when observing best practices with high quality gear meeting all appropriate standards.
Wired connections (eg, Cat 5 10/100 Ethernet) with all its problems, has consderable advantages in terms of reduced downtime and invulnerability to many potential attack modes. And it's almost always faster.
Nonetheless, in the situation described, I agree that it seems to have been some oddity of Windows which caused this problem. Use Linux, one of the BDSs, or OS X, instead. There will be difficulties, largely due to lack of vendor support, but the advantages in less mystery in the problems encountered will be more than sufficient offset. And the software, and much of the applications (ie, a worthy equivalent of Office -- OpenOffice) are free. Both in liberty (they're open source) and as in beer (no cost). Avoiding licensing hell is alone worth almost any trouble, in my view. 71.249.12.89 13:29, 12 May 2006 (UTC)
The masses on a pulley are each initally 1.60m above the ground, and the massless frictionless pulley is 4.8 m above theg round. Mass 1, on the left side of the pulley, is 1.2kg, and mass 2 is 3.2 kg. What maximum height does the ligher object reach after the system is reached? don't think I even got the equations right....but here goes...
Σ F = ma T - FG1 = m1a
Σ F = ma T - FG2 = -m2a
Then I subtract my equations..
FG2 - FG1 = (m1 + m2)a a = (3.2 x 9.81 - 1.2 x 9.81 ) / ( 1.2 + 3.2)
Then a is equal to:
a = 4.45 m/²
So next I solved for v2, just before m2 hits the ground
v2² = v1² + 2ad v2² = 0 + 2(4.45)(1.6) v2 = 3.77 m/s
Next I used 3.77m/s to solve for the distance that m1 is moving up, which is the original question
v2² = v1² + 2ad d = (v2² - v1²) / 2a d = (-3.77² - 0²) / 2(-4.45) d = 1.6 m
That means that object moved 1.6m above the 1.6m, PLUS the 1.6 m that m2 moves. That's a total of 4.8m, but alas, that is not the answer (3.9m). If anyone could point show me what I've done wrong, thanks. C-c-c-c 03:25, 9 May 2006 (UTC)
Well it's a pulley system, and there are two masses. M1 is 1.2kg and M2 is 3.2kg. The moment after second or first mass is added on to the pulley, the heavier one falls down and lifts the lighter one. I'm supposed to calculate that distance. C-c-c-c 06:11, 9 May 2006 (UTC)
I'm guessing that by "maximum height" the problem means: after the large mass hits the ground, and the small mass rises through 3.2m, the rope will go slack and the small mass will free-fall until it returns back down to 3.2m (at which point the system will continue to oscillate until all the impacts between the big mass and the ground dissipate the energy). During that free-fall, what maximum height does the small mass reach? I wouldn't try to solve any equations of motion, or consider accelerations, forces, or tensions. Just apply energy conservation very carefully. Melchoir 07:30, 9 May 2006 (UTC)
Mhm alright. I'll check with my teacher. Thanks!
C-c-c-c
08:16, 9 May 2006 (UTC)
I was thinking too simply and I forgot that you'd be dealing with stuff like slack at that level! Melchoir's solution is obviously correct but it seems like you haven't been taught energy conservation yet, so you can think of it like this: You have the acceleration at the point the system releases (9.81m/s²), you have the velocity at release (3.77m/s up) and at max height (zero).
It's been so long since I've done math in an organized mannar so excuse me for my weird methods of deriving equations. Using the formula for acceleration you get:
which gives you to 0.38 seconds.
and you get 0.72, which when added to the base 3.20 gives you the same answer (3.92) as Melchoir as well as the text book. I wonder if you understood that O o;;. freshgavin ΓΛĿЌ 06:14, 10 May 2006 (UTC)
Sorry to be a bother again, I just have quick question on solving problems without mass. A box is given a push so that it slides across the floor. How far will it go, given that the coefficient kinetic friction is 0.20 and the push imparts an initial speed of 3.0m/s? I have to figure out the acceleration, then I can use kinematics to get the distance.
So:
FA - Ff = ma FA - μkFN = ma FA - μkg = a FA - 0.20(9.81) = a
I canceled out the masses but now I have two unknowns still. I don't know what to do with FA...I think I may be missing some critical information that I should know but can't seem to have pop up in my head. thanks. C-c-c-c 08:47, 9 May 2006 (UTC)
Can anybody tell me what kind of tank is pictured in this photo. Thanks.-- Peta 04:41, 9 May 2006 (UTC)
Are they? a.s.s can't survive on their own while c.p.s can. A.s. can't perform simple tasks like buying gum or estimating if things are expensive, etc.-- Jondel 05:10, 9 May 2006 (UTC)
I took these pics after finding the little guy in the ditch on the side of my road. He's about 2" long and orange with darkish spots. The road is in the Green Mountains of Vermont. I later found quite a few more of these things on the side of the road. Sorry the pics aren't better but I'm not that good of a cameraman. So, what is it? Dismas| (talk) 05:24, 9 May 2006 (UTC)
It is a newt! We have them at our diabetes camp farther south in the Appalachian mountains of Pennsylvania. A newt is an immature salamander still in the land-living stage. They eat small bugs. You can find them in the grass or leaves within a hundred yards or less of a swamp or wet area. They are about 2" long, move slowly and are easy to catch, not slimy. The dominant color of the Pennsylvania ones is a burnt or dusky orange, but they have two parallel rows of bright orange dots ringed with black running down their backs. Beautiful. When they get older the color changes (to black and white I think), they grow to maybe 5 or 6 inches, and they move back into the water and are rarely seen. alteripse 10:50, 9 May 2006 (UTC)
Cool. Never knew newts were salamanders. Not that I've ever thought hard about it before though! freshgavin ΓΛĿЌ 06:16, 10 May 2006 (UTC)
i've always been curious to learn how pros balance a basketball on their fingertips.just exactly how do they do it?
thanks a tonne
In fact, you can balance the ball even without spinning it (try it !). Spinning stabilises the ball due to gyroscopic effect and makes it easier (in theory). The tough part is to learn the art! Experts balance many other objects like plates too. -- Wikicheng 08:47, 9 May 2006 (UTC)
Hi,
In the movie and in pictures of Titanic, the exhaust pipes of the ship seem to be not perfectly vertical but are tilted slightly. Is there a technical reason why it should be ? -- Wikicheng 09:11, 9 May 2006 (UTC)
2 quick questions:
Zunaid 10:19, 9 May 2006 (UTC)
Hi, I was having a discussion with a few friends and was wondering if anyone had any reputable references in regards to how much of our brain we use. I've heard that we use only 1% of our brains ability. However I've also heard we only use a small percentage at any given time. Others have stated that we use 100% of our brain just that we do not use it all the time, and that with differnt tasks we use different parts of our brain but in the end every part of our brain we use.
Hi, I've been wondering about what could be the English name for the screaming colors usually used in highlighter pens and police vests. They are usually pink or yellowish green, but can also be orange (see Image:Helsinki fire truck H10.jpg), and often hurt the eyes on a clear day. In Finnish and apparently German they are called "neon colors" but I couldn't find anything similar in the English Wikipedia. – Mysid 11:13, 9 May 2006 (UTC)
When the colors were first widely used in the US in the late 1960s, they were often called DayGlow or Day-Glo. alteripse 11:49, 9 May 2006 (UTC)
The jackets in these colours are (at least in the UK) called high visibility or hi (gh) vis. I've consequently heard the colours referred to as "high vis(ibility) yellow/orange". Thryduulf 01:01, 10 May 2006 (UTC)
I went to take the garbage out and since it rained last night there was a handful of earth worms on my drive way. To get a little good karma I started moving the worms into the grass to ensure the sun or my car doesn't kill them. It turns out one of them wasn't a night crawler though. It had the same body size as a medium sized worm, sticky with a slime trail like a slug, had a flat head it dabbed around and occasionally raised like a snake, and had two brown stripes down it's back. The girlfriend has the camera in her car so I can't take a picture of it. I've never seen one of these before. Anyone know what it could be or know of who I can ask about it?
On a side note, these things eat earthworms by extending their esophagus-analogue into their prey. Disgusting! Isopropyl 02:09, 10 May 2006 (UTC)
In most of the exams Girls outperform boys. Why is this so?
Of course, many people believe in the opposite - that boys outperform girls academically. Go figure. See also Sex and intelligence -- Fangz 14:00, 9 May 2006 (UTC)
A 50 turn coil has a sinusodial magnetic flux. Maximum rate of change of flux is 5Wb/s. Find the peak amplitude and RMS voltage.
I know induced voltage is e = d/dt, and = N.A.B, but I'm not sure where to go from there..?
Bwgames 12:37, 9 May 2006 (UTC)
How does body hair know when to stop growing, and when to grow back? 87.194.20.253 15:52, 9 May 2006 (UTC)
i need relevant information about grain drying
I would start with food storage and harvest. -- Ginkgo100 19:00, 9 May 2006 (UTC)
what about the brushless alternator voltage regulation?.I am a electrical engineering student.Its a portion on our syllabus.my question is again repeating,can you give any idea about the voltage regulation of brushless alternator?.I am engineering student in india.
Thank you
what about the brushless alternator voltage regulation?.I am a electrical engineering student.Its a portion on our syllabus.my question is again repeating,can you give any idea about the voltage regulation of brushless alternator?. —Preceding unsigned comment added by Chandykv ( talk • contribs)
Because of a problem which is a long story, I need to send a large file to my home email address. The problem is my email services will not allow a file this size to be sent. This is an executable file so PKZIP will not shrink it much if at all. Is there a way to break the file up into parts and send each part seperately, then reconnect the parts on the receiving end?
When I press Ctrl + S in notepad while at the end of a line, the cursor jumps back several spaces - why?
When 'word wrap' is activated, and a long string such as "enteric/genital" wraps to the next line, and I decide to turn it into "enteric or genital", why does notepad ignore the fact that "enteric" will now fit on the line above? -- Username132 ( talk) 20:10, 9 May 2006 (UTC)
As far as I know, both these things are bugs in notepad. They have been bugs since the earliest days of Windows 95. Why no one at Microsoft has bothered to fix it in 10 years is beyond me, but it's closed source so no one else can fix it. If it really bugs you you can use Wordpad (Which has its own host of bugs and problems, but has the above bugs fixed), or download another text editor. — Pengo 02:19, 10 May 2006 (UTC)
What pigment(s) are used in ultraviolet-sensitive beads? The web sites I've checked don't indicate the identity of the color-changing material. Hyenaste citation needed 20:44, 9 May 2006 (UTC)
how accuratley are satelites tracked say if there in orbit around the moon or mars? and does the tracking relay on just radar based systems, or are other methods used? cheers Colsmeghead 21:06, 9 May 2006 (UTC)
In general, a satellite's orbit can be determined by making a series of observations in some reference system: from a ground station on earth to the satellite, from the satellite to the ground station, or between satellites. A series of measurements of direction, range, or range-rate could be used to refine the orbital parameters.
A number of methods have been used to track earth-orbit satellites: photography to determine direction, electromagnetic signals such as lasers or radar–either impulse timing or phase comparison to measure range, and Doppler shift measurements to determine range-rate. Günter Seeber (2003). Satellite Geodesy (2nd ed.).
For satellites orbiting other celestial bodies the most convienent method is most likely the Doppler method. Another technique that should probably be metioned is interferometry to determine direction. Very Long Baseline Interferometry is used to realize the reference systems in which measurements are made, and our VLBI article mentions that it was used to track the Huygens probe accurately enough to measure windspeed on Titan. EricR 12:32, 10 May 2006 (UTC)
The actual orbit of a satellite is actually NOT easy to predict with great accuracy. In fact, the US military is actively tracking all artificial satellites orbiting the Earth, and frequently updating the characteristics of all orbits. This information is provided to Space Agencies and other operators, who may actually activate small rocket engines on the platforms to adjust or correct the orbit on a regular basis. These orbital corrections are necessary because the Earth (or any celestial body, for that matter) is neither homogeneous nor symmetrical (even the center of mass of the Earth is moving as a result of ocean currents and wind systems), and because the orbit of each satellite results from the gravitational attraction of many (as in infinitely large) objects (mostly the Sun and the main planets, as far as the Solar System is concerned). Friction is often small, but never totally negligible either, and then there are other forces, such as the solar wind, impact from cosmic dust, etc. While each perturbation, by itself, may have a rather small impact, the cumulative effect of all these mechanisms over a long period of time does result in the 'degradation' of the orbit, hence the need to periodically apply corrections. Hope this helps. -- Michel M Verstraete 21:57, 12 May 2006 (UTC)
Why does sensation of speed decrease with increased distance from the road/increased altitude? i.e. Why does 20mph in a go-kart feel so much faster than 20mph in a standard road car? I presume that it is the same reason why when you are on an aircraft coming into land it appears that you are going slower than any road traffic about until you are very close to the ground when you are suddenly aware of how fast you are truly going? Does this effect cause difficulties for pilots?
My initial vauge guess is that it is something to do with paralax, but I don't see how that would have any significant difference between being 20cm or a metre or 2 metres above the road? Thryduulf 00:53, 10 May 2006 (UTC)
My dad owns a 40-foot steel sailboat. On days with very little wind, when we weren't in enough of a hurry to turn on the engine, he would put me in a lifejacket, tie a rope around my waist, and drop me off the stern. What felt like not moving at all while on deck was fast in the water. It just has to do with proximity to the reference point used to estimate your speed. moink 20:51, 12 May 2006 (UTC)
I just came across the consonantless Ia io [28] ( Great Evening Bat) and was wondering if this was the shortest binomial name there was, and if there was a place in wikipedia for such mindless trivia. — Pengo 02:31, 10 May 2006 (UTC)
Nice work creating the article. Thanks Mysid, and everyone who researched it! — Pengo 13:10, 11 May 2006 (UTC)
I know there are five main senses, but for the other senses that are not the five main senses would sense of navigation be considered a sense in some form or fashion?
Hi. When a balloon, filled with regular air. Is inflated to a large size, not tied, and then released, it goes flying. This is common sense, however, I need to know the physics of it. What is the physical explanation for why it flys? I really need this question answered soon. Thanks Tobyk777 04:23, 10 May 2006 (UTC)
As it's summer here, I thought it would be quite nice to take my Hyacinth Macaw out for a walk with me in the sun sometime (or even just in the garden). He's fully flighted, so what would be the best way to keep him with me? A chain from his leg to my wrist, or one of those parrot harnesses you can buy on the internet? Anyone have any expierience with this? Thanks. -- 81.77.242.228 06:01, 10 May 2006 (UTC)
Personally I think it would be much better to return the bird to the wild where it could fly free. Alternatively you could give it to a bird sanctuary. Don't you think it is cruel and uneccessary to capture a free spirit like a bird ? That is my opinion. Antipodeite 11:31, 10 May 2006 (UTC)
(Taken from Talk:Mozilla Firefox)
I use Firefox to browse Wikipedia and other websites. I often use the Control +/- function to make the text larger or smaller. For some websites this works really well because the lines of text stay the same width. For other sites though, the lines of text get wider and wider so that I have to scroll back and forth horizontally just to read them. On some sites, like Wikipedia, when I make the text larger it makes the lines get narrower and narrower.
So is there anything you can do with your Firefox settings or extensions to fix this problem, or is it just up to the webpage designers (including those who maintain the MediaWiki software) to code their pages better to fix this problem?
Any help with this would be much appreciated. I've got a small monitor, and I often need to make the text bigger so that myself and others can read it without being real close to the screen. Thanks!
think of examples in your everyday life where the princlples of reaction rates are applied( temperature, disloving, or space) ~~
The more objectionable a person's statements, the more quickly you react by disloving them. Grutness... wha? 06:55, 11 May 2006 (UTC)
I read the stars article, and there were a few things i didnt understand. Firstly, what the 'fuel' in the stars is. Secondly, when they die (im pretty sure this is when they run out of fuel). And thirdly, what size they need to form into black holes. Thanks. ````
A gating current can latch a thyristor.But is it possible to latch a thyristor during the(90 -180)degree fall of input sinusoidal voltage? We know that a thyristor can be triggered by the +ve half rise(0deg to 90deg) of sinusoidal voltage,but a little gating current would latch it at a smaller potential than it would have.So is this triggering possible during the +ve half decrease(90deg - 180deg)?
How were the planes that delivered the first atom bomb protected from electromagnetic pulse? Is it possible to protect ordinary devices from EMP weapons as well?
I wish know the melting point of Empirical formula : C8H12O5
Chemical Name: 1,4:3,6-dianhydro-2-acetyl-D-glicitol
or
2-acetyl isosorbide
Regards N Thanks
Having found several tins, what is it used for. I am familiar with Sodium Hypochlorite which I use for sterilising beer bottles.
I was just wondering, when a baby named X belongs to a family named A, and a baby named Y belongs to a family named B, grow up at the same time. Lets say X sees a banana green, but his family A says a banana is yellow, and he sees a tomatoe blue and his family says the tomatoe is red! When he sees the sea red his family says the sea is blue! While the other baby sees a red banana and his family says its yellow and he sees a green tomatoe and his family says its red and he sees a yellow sea and his family says its blue... anyways the point is both babies will grow up, knowing all the colors, and knowing all their names but, they will be seeing somethin different! He sees a red banana but he calls it a yellow banana! he sees a red car and calls it a yellow car, and the other one will see the car blue but call it yellow too. I just want to know if anyone can proof that everyone sees the same colors...? it could have a simple answer i just want to know.
I know humans have balance, but do animals with four legs have balance too?
Hi: I notice that in english language male and fmales of diferent species have special names and also when they refer to a group and population have also different names e.g. hen - ruster bore - school - herd etc. How I can find a table or place that list all af those names without going species by species? Thaks MhE
The article on xenotransplantation says "Disease transmission (xenozoonosis), and possible long-term effects of xenotransplantation on the human gene pool and permanent alteration to the genetic code of animals are a cause for concern." - how does it affect the gene pool? Unless it's testicle transplant, I don't see how the germ-line is affected? -- Username132 ( talk) 21:34, 10 May 2006 (UTC)
A past exam question was "Xenotransplantation will never solve the issue of the kidney tranplant waiting list. Discuss" - I'm wondering how this could be so? Is it because the engineered HLAs wouldn't please everybody all of the time... I mean what's the point in xenotransplantation if you still have to worry about finding a match? -- Username132 ( talk) 21:56, 10 May 2006 (UTC)
Anyone know how to make numbered lists in word where the numbers are genuine numbers and not a "magic field" using Word 2003 in XP?
I maintain a list of events and each month add any new ones at the bottom. I then want to be able to sort on (say) field 3 and have the numbers stay with the relevant line, so that i can later sort by field 1 and put them back in order. When I was using good old Word2, numbered lists just inserted text. Now it seems to do this magic stuff - including ignoring any numbers already there! Frustrated. -- SGBailey 21:40, 10 May 2006 (UTC)
After enduring an increasingly dreadful smell in the laboratory in which I teach for five days or so, I found that thioglycolates had been poured down a sink into an open trap below, rather like a sink in a cupboard, where they had presumably released thioglycolic acid into the laboratory all that time. I assume that the water in the trap must have been somewhat acidic. Does anybody have any similar experiences, and should I be concerned for my health? G N Frykman 22:07, 10 May 2006 (UTC)
In all the sources I've been able to find (a doctor via my sister's memory, Wikipedia, WebMD, some site off Google) except one (my dad), the ideal resting adult pulse is in the 60-100bpm range. Now, is this the "within this you're healthy" range, or the "outside this you're seriously messed up" range? Let's say I have a resting pulse of around 96 at 18 years of age. What's that mean? (BTW, to anyone who plans to say "ask a doctor", I'm already scheduled to get a physical in a few weeks, and all I'm asking is what the webdoctors' advice means. Eat me.) Black Carrot 22:17, 10 May 2006 (UTC)
I was thinking about this before and it just occured to me that I can ask the all knowing wikipedians if they have a usefull answer for me. What I was thinking of is the possibility that there are other colors in the world that humans aren't able to see and therefore because we don't live with those colors in our lives, they are also unimaginable colors.
I was thinking of this because I recently remembered that dogs can only see in shades of red, so maybe humans can only see in shades of blue red and yellow and mixtures of them. I talked to my dad about it, who isn't at all an expert, but he said that there are shades of those three base colors that we can't see, but what I'm talking about is major colors, not just shades. Anyhow I came to wikipedia trying to find an answer and got myself on the Pentachromat page. Now, you might say that my question is answered on that page, but I don't understand all that science blah blah blah.
So if anyone can give me an answer, that would be cool. Thanks a lot RENTA FOR LET? röck 00:01, 11 May 2006 (UTC)
The short answer is yes; even limiting to the range of "visible light" (excluding ultraviolet, infrared, and so on), there are infinite colors we cannot see or imagine. Technically, though, since colors exist only in our heads, by definition I suppose there cannot be a color that no one can perceive. Color is complicated. An objective description of a color would need the intensity of each frequency, along the entire spectrum; that is, you could draw a curve of intensity vs. frequency (wavelength). Since (most) human eyes have three cones, we see in three color "dimensions". For each type of cone you can draw a curve showing how much it responds to different frequency light. (For instance, see the figure at the bottom of [35].) Therefore, we are trichromats. Dogs appear to be dichromats, as are humans who are "color blind". Every frequency of light stimulates the cones to different degrees; a mixture of frequencies as is normally present stimulates all three cones but to different amounts. Ultimately, the signal from the eye only carries three pieces of information: the red, blue, and green "channels". For a dichromat, two different colors (patterns of light intensity at different frequencies) may stimulate his 2 cones the same way, but would stimulate our third cone to different degrees, and so we could tell the two colors apart. Our televisions and computer screens only need three colors to produce the "full spectrum" of colors, but don't think that there is anything special about three. If someone (or an animal, or an alien), had a fourth cone with its own sensitivity pattern (say to yellow), two colors which look the same to us might look completely different. For instance, on my computer, purple is created with a mixture of red and blue; to a tetrachromat (or even a trichromat with different cone sensitivity patterns), the red/blue mixture might look different than a pure purple. There are three primary colors because we have three types of cones, not the other way around. Color is subjective; there is no guarantee that two different trichromats will see colors the same way. Colors exist inside our heads. It's tough to grasp some of these concepts—I still struggle with some of them—so feel free to ask me to clarify. Interestingly, for some further food for thought: there is evidence that some human females are weak tetrachromats since they have two X chromosomes and therefore two copies of the red cone gene (although they wouldn't be full tetrachromats for reasons I can explain if you're interested); so two colors which look the same to a trichromat like me might look different to a woman with such an ability. Finally, there's a fascinating article at [36] discussing the evolution of color vision in primates. The red cone is the most recent, and appears to have evolved probably to aid in selecting fruit against a background of foliage, or perhaps to select different types of leaves. I apologize for the long post; please ask me if I haven't been clear. — Knowledge Seeker দ 04:46, 11 May 2006 (UTC)
Who do you think would win in a no-holds-barred, to the death fight between a man highly-trained in martial arts, in top physical condition and a grizzly bear of approximately the same size - assuming that there were no outside variables whatsoever (just the man, the bear and a piece of perfectly flat ground)?
(I've just been thinking about an advert from a few years ago in the UK where a guy was fighting with a bear, Street Fighter II-style over a fish.) -- Kurt Shaped Box 00:31, 11 May 2006 (UTC)
DJ Clayworth 03:45, 11 May 2006 (UTC)
The bear would probably win, unless the human got extremely lucky (and was able to score a killing blow to the bear's skull or throat without first being mauled). A human - even one in top physical condition with extensive unarmed combat training - would have almost no defense against a bear's claws and teeth without the aid of some kind of weapon. Raul654 06:42, 11 May 2006 (UTC)
I think if the human was smart he wouldn't take the bear on face-to-face. To do some kind of "honorable" martial arts style fight with a bear wouldn't be very smart, as the two most dangerous weapons the bear has (claws/arms and teeth) are situated in the front of the bear's body. I'd think the best strategy would be to keep the bear slightly disoriented by trying to run around a fair amount, and probably attacking it from behind, trying to make some kind of fatal blow to the head or neck. Those are my first impressions of the situation, at least. E WS23 | (Leave me a message!) 00:52, 12 May 2006 (UTC)
Hi, I need help with my prjoect. I need help on molecules and elements. What is the different stuff about them. There meaning/deffinition. What are they made up of.
As far as I know it's a silly, improbable theory that few people would put any proper thought into, but just for the sake of science...
Ignoring concerns with available technology (a big thing to ignore, I know) what problems might there be in using a massive object's gravitational field (for example, a supermassive black hole) to view the earth's light as it is bent around the supermassive object and back to the earth? I imagine half the problem would be finding such a source that would so accurately curve light so that the earth would be conveniently right within view, and the other half of the problem would be magnifying, filtering, and distorting the light to get an accurate picture out of it.
I know I'm talking about rediculously high resolution here (even within the earth's orbit, you're lucky to get a resolution less than a meter taking pictures of the surface), but since I'm assuming a time where problems with optical lenses have been done away with by much more complex technology is there any other reason why it wouldn't be possible to see the surface of the earth, light years ago? (Depending on the distance from the supermassive object.) freshgavin ΓΛĿЌ 07:05, 11 May 2006 (UTC)
recently,i have undergone a lot of religious fastings which lasts for more than 8hours/day.In such a case,how come my body does'nt produce HCl and start digesting the walls of my stomach?
thank you
what is the difference between color of light and color of pigment?
--thanks!
can stress actually lead to miscarriages in pregnant women?
ok, i know this may sound something of an essay question, but its not, i'm a uni student and any kind of help would be great, even if its just what to search for as every obvious thing i have searched for has not come up with the answer i am looking for. what would be the effects of pressure on coordination in the human body? thanks skye
First, is there a RD:Wikipedia? I think that having it at the top of the RD page would be nice. Second, is there a proper way to archive talk pages? -- Kainaw (talk) 12:43, 11 May 2006 (UTC)
thanks heaps
I've changed my default media player from windows to Jet Audio, but the Icon still remains as windows media player. How can I convert it to Jet Audio Icon? mp3 files are played via jet audio,.but its icon is media player !!
Does the sparkling of a diamond and twinkling of stars have anything in commom?
thanks a lot
OK, I realise this is a minefield. I've read Apple evangelist, Operating system advocacy and others, and they don't really address my question, which is: what is it specifically about the user interface that Mac users find preferable to Windows? Do they think it's easier to find, copy, rename or delete files on a Mac, for example? To switch between open applications? Do they find the Mac's Dock easier to use than the PC's taskbar, and if so why? I'm not interested in issues such as speed, security, architecture, etc. Just these kind of user interface issues. As an example, someone once pointed out that the menu list across the top of the screen is easier to use on a Mac because it's right at the top of the screen, so you can slam the mouse up there and just hit it, whereas with Windows you have to point to it more carefully because there's that blue line across the top. That's the kind of comparison I'm interested in. And by the way, I'm a Mac user myself :) -- Richardrj 14:00, 11 May 2006 (UTC)
This was a question that came up on rec.pets.birds a while ago (I found it interesting anyway). Umbrella Cockatoos have a reputation for being vicious, ill-tempered, quarrelsome and generally 'difficult' birds. If one of them was to go up against (arguably) the UK's most vicious, ill-tempered quarrelsome bird, the Great black-backed gull in a fight - which one do you think would win? Like with the man/bear Q. above, assume that there are no outside variables and neither bird was intimidated by the other's posturing, i.e. they both just got stuck in and the feathers started to fly - just a straight one-on-one fight until one of them couldn't fight any longer. -- 81.79.226.227 14:12, 11 May 2006 (UTC)
Please I search for Program(software) to translate text from Arabic to English ?
What is the point in an autogeneic bone marrow transplant? Could you use this for leukemia, returning only the non-cancerous stem cells? -- Username132 ( talk) 16:15, 11 May 2006 (UTC)
The bone marrow transplant article says "To cryopreserve HSC a preservative, DMSO, must be added and the cells must be cooled very slowly in a control rate freezer to prevent osmotic cellular injury during ice crystal formation." but I think slow freezing promotes crystal formation. -- Username132 ( talk) 16:30, 11 May 2006 (UTC)
In general, slow cooling leads to a small number of large crystals, while rapid cooling leads to many tiny crystals. However, based on the previous answers, this is not true in this particular case. StuRat 19:26, 11 May 2006 (UTC)
In the image on the right, what does the line going up with the two dots mean? Thanks, K ilo-Lima| (talk) 17:00, 11 May 2006 (UTC)
The correct term for the shape of the molecule is pyramidal. The electron pairs dominate the repulsions, and the tiny H atoms are insignificant in this respect. So the short, fat lone pair repels the longer, thinner bonding pairs (each with an H atom at the end) more than they repel each other, forcing the three bonding pairs slightly inwards to an angle of 107 degrees. The electron pairs can therefore be described as having a distorted tetrahedral geometry, but the molecule is pyramidal. X-ray data will not show up the lone pair - it is not part of the shape of the molecule itself. G N Frykman 21:26, 11 May 2006 (UTC)
Hello,
I will be very greatful if anyone could draw the flowchart for the manufacture of DDT for me. Thanks ----------
How much data is exchanged on the public Internet daily? 134.215.197.210 19:26, 11 May 2006 (UTC)
On my old bike I'd change gear and it would always take ages for the chain to move across and I'd get a constant clickety sound. Even when it moved over, it would sometimes carry on clicketing like it wanted to be on another sprocket. Why?
Also, on dutch omafiets, the chain is usually covered by some fabric thing - what's that about?
At what minimum speed must a roller coaster be traveling when upside down at the top of a cirlce if the passengers are not to fall out. Assume a radius of curvature of 9.6m.
I've done this about 5 different ways and gotten different answers each time. The example below is one I think may make the most sense....I don't have the answer to this problem so if someone could verify whether I got it right or not. Thanks.
C-c-c-c 20:54, 11 May 2006 (UTC)
i recently read in news scientist that there was a piece of US legislation that forced car companys to make there cars more effiecent at 55mph, ie the sweet spot where the cars runs the most effiecently, now is there a similar law in the UK and if so whats the speed? Colsmeghead 21:15, 11 May 2006 (UTC)
I am seriously confused about some key elements in this process. First when water undergoes electrolysis then can the oxygen mix with the hydrogen without turning back into water and if it can why cant that gas be used in cars?
what are the big differences between a software engineer and a computer programmer?-- orphan frequently 03:21, 12 May 2006 (UTC)
well, yes, i could have told you that, but i mean actual work wise.-- orphan frequently 03:21, 12 May 2006 (UTC)
haha, i have to come up with three careers for a project, anyone got another name, technical director maybe?-- orphan frequently 04:06, 12 May 2006 (UTC)
My knowledge of using arrays in Javascript is pretty weak. Basically, I want an easy way to fill out an array with, say, 10 numbers, from 0-9, in a "random" order. So a few possible options would be...
Every number is used once. Now, just to add a little more complication, I'd like to be able to do this for n amount of digits (I did it for 10 up above, but it would be nice to be able to use the same function for 11, or 12, etc.). In every case I will be using the digits from 0-n, and will want each one to be used exactly once.
Is this a foolish desire? Is there an easy way to do it? You don't have to do all the work for me, but pointing me in the right direction would be fine. -- Fastfission 05:29, 12 May 2006 (UTC)
Declare MyArray of n+1 elements For i = 0 to n MyArray(i) = i Next For i = 0 to n Temp = MyArray(i) RandomElem = int(random(n+1)) MyArray(i) = MyArray(RandomElem) MyArray(RandomElem) = Temp Next
RandomElem=i+int(random(n+1-i))
n = 10 // number of elements desired r = 50 // random numbers can be from 0 to (r-1) randarray = new Array(n); i = 0 // temp counter while (i < n) { randarray[i] = Math.floor(Math.random()*r); // Math.random() produces pseudo-random number between 0 and 1 i++; } // randarray should now have random number elements.
is silicon oil bad for baby skin?
Baby no longer slippery? Maybe the first signs of rusk? What he (or she!) needs is oiling! But forget cheap silicone oils. Buy Baby oil. Babies just love it! Baby oil. Available at all good corner stores.
has the world really been warming over the past 20-30 years?what are the consequences?
thank you
People have said that you can ride an exercise bike that is properly equipped, and by doing so you can pour energy into the system and get reinbursed by the electric company. They even say that if you pour in more energy than you use, the electric company has to pay you money. Sounds cool, does anyone know how to go about doing it, if it is possible. Thanks, Ch u ck (척뉴넘) 07:54, 12 May 2006 (UTC)
What is the modern name of Astrophyton darwinium? Googling for the species name returns zero results (you get a few more on just the genus "Astrophyton"). The creature features prominantly on plate 70 in Ernst Haeckel's Kunstformen der Natur (1904) (see the Commons page for all the beautiful plates). The name is shown in the associated text [40] if you want to check it for typos, or if you can read German and want some clues. Note that Haeckel himself is the authority on the name. Any help appreciated. It's been bugging me for a while. (Note that Wikipedia's article on Astrophyton is for a genus of cacti, and not basket stars) — Pengo 07:56, 12 May 2006 (UTC)
Can I get a detailed explaination of observations accompanied with the Supernovae(like mag, and explaoination of types, naming etc.)? Contact : [email removed for spam prevention]
Can I get a detailed explaination of the observations accompanied with the finding of Supernovae (like the value "mag", and explaination of types of Supernovae, naming etc.)? Contact : <Email Removed>
which of the following 3 bombs, kills only humans(living organism) but has little effect or damage on buildings & other properties? A. neutron bomb B. Hydrogen Bomb C. Atomic bomb --the preceeding unsigned comment was added by 196.200.102.42 at 10:32, 12 May 2006
I'm not sure if "frequency ramp generator" is the right term, but I need to build a circuit that produces a signal output whose frequency increases linearly as a function of time. Using a function generator and op-amps, transistors, timers etc, is there a simple way to build such a circuit? Thanks. - Wiccan Quagga 12:24, 12 May 2006 (UTC)
I came across the following sentence: "If a constant killing radiation were endured, all living animals with dividing cells would die."
Logical follow-up: are there animals that do not have dividing cells? Are they short-lived? 194.151.6.67 12:41, 12 May 2006 (UTC)
( Ταλκ το mε) 14:01, 12 May 2006 (UTC) Keith Richards -- Zeizmic 14:21, 12 May 2006 (UTC)
Don't forget red blood cells. They have to be made in the bone marrow because they can't divide on their own. Jonathan talk 14:18, 15 May 2006 (UTC)
Is it possible to burn Real Player video files (.rm) to DVD and watch them on TV through a DVD player? -- Richardrj 14:59, 12 May 2006 (UTC)
What's this about oval orbits? I mean, most people can visualise an object moving uniformly in a straight line, unless there is an external influence. Why is it that all orbits are not perfect circles? If an object is moving away from the point of gravitational infulence and there is no friction, (no friction in space, right?) it will tend towards the straight line. Surely the gravitational influence is weaker the further the object is aways from it? Why does it reach a plateau and return (and gain velocity)? I'm not sure the analogy of a rubber blanket, (gravity influencing from below), with balls rolling around a heavier ball makes sense here. What have I missed?
Note that an ellipse is not the same as an oval. Ellipses, parabolas, and hyperbolas are conic sections, while an oval is a vague term that can mean many things. StuRat 16:52, 12 May 2006 (UTC)
While the equations prove to him that it's true, I don't think that's going to help him visualize why orbits don't all become circular. Instead of thinking about circular orbits, think of the way things fall back to earth. If you throw something up at an angle and let it drop down (lets pretend there's no air, and no friction), it follows a parabolic path, not a circular one. If you threw the object really far up, so far that on its decent back to the earth it would actually miss it (go over the edge, in a manner of speaking), the parabolic curve would continue around the earth and after a while it may end up in a regular elliptical orbit. Sure the farther the object is the weaker gravity is, but if the object is moving slower than the escape velocity at that point, it won't plane out into a straight line, and it will eventually fall back. In fact, it must be quite difficult to achieve a circular orbit naturally; the object must be travelling at a 90 degree angle to the circumference of the planet and at the exact speed to keep it stable at that height. freshgavin ΓΛĿЌ 17:13, 12 May 2006 (UTC)
Many thanks Guys. —The preceding unsigned comment was added by 82.24.122.46 ( talk • contribs) 00:15, 13 May 2006 (UTC)
Hi!
If a food stuff has a water activity of 0.70, then it would have an equilibrium relative humiditiy (ERH) of 70% (right?!). But to keep this constant, what ERH would it need to be stored under?
Thanks!
does psoriasis spread to infants below 3 months of age. is it contagious. does it leave scars which is long lasting. can it be treated by medicine.
Try psoriasis and relax a little. I'm fairly sure it isn't contagious to anyone. Skittle 18:16, 12 May 2006 (UTC)
Can video conferencing increase productivity in meetings? I'm looking for research or testamony.
During a conversation with a friend, we were trying to figure out how you'd answer the topic question. I think you find out your current latitude and longitude; add/subtract 180 to/from the longitude and just flip the latitude north for south; then find out what's at those new co-ordinates. Do we have our algorithm right? -- LarryMac 19:04, 12 May 2006 (UTC)
IF the universe is expanding constantly, but, according to the laws of thermodynamics energy cannot be created or destroyed, only converted tfrom one form to another, then won't the universe eventually "run out of energy" as such. For example, once the universe gets a whole lot bigger, the energy which exists currently will have to be shared amongst the huge, and still expanding universe, therfore the energy available to us will eventually become limited, thus meaning we need to search elsewhere in the universe for energy? no? Or that the possible systems nearer to the end of the universe than we are will have little energy thus collapse?
On a cosmological scale, there is no conservation of energy. As the universe expands, new energy is pumped in. We actually will eventually run out of free energy, but not just because the universe is expanding, rather because of the particulars of its rate of expansion. - lethe talk + 03:51, 13 May 2006 (UTC)
You're talking about the heat death of the universe. It wont happen for a long long time after our sun burns out and swallows the Earth, but it's proposed that it will occur one day. — Pengo 11:06, 13 May 2006 (UTC)
Hi everyone, need some quick help with this. Where exactly does Windows record all the websites you go to (is it .doc or .dat or what?), how, if possible, can I read the file, and is it possible to delete this without erasing all the data in the hard disk? Thanks a lot!
when ever i go drinking i always end up yawning, nedding to wee alot during the night out and go for a number 2 alot the next day. are these all realted to alcohol comsuption, if so what causes if and is there any drinks which would have less of an effect
Plus, when you go out drinking, you consume alot more liquid than you normally would. You're just becoming aware of that fact from your frequent bathroom visits. Pretty simple actually. - R_Lee_E ( talk, contribs) 05:51, 14 May 2006 (UTC)
Is there any software I can run on my laptop, so that it emits a loud noise at a set time? Preferebly open source- googling didn't help me very much :( 138.237.165.140 23:03, 12 May 2006 (UTC)
Does anyone know if any extrasolar planets have been discovered in other galaxies? —The preceding unsigned comment was added by 205.157.110.11 ( talk • contribs) 23:05, 12 May 2006 (UTC)
When you throw a ball against a wall (for example), it has to travel half way, then half that distance and then half that distance again. If you carry on dividing the distances an infinite number of times, the ball will never hit the wall I would be most grateful if someone could help my poor animal brain conceptualise why this idea is wrong. It seems to me that balls DO hit walls (or don't they?). Many thanks and kind regards. Frecklemad
The Special Theory of Relativity says that nothing, not even immaterial influences, disturbances, and signals can travel faster than light.But then, how come I've heard that there are subatomic particles in the world called tachyons which can travel faster than light? User:Bowei
I have been trying to Google to find out if anyone has swam across the Atlantic. All I find are pages and pages of some fool at Opera who said he was going to do it and didn't. I'm sure someone has swam the Atlantic - I remember seeing a documentary of a woman swimming in a cage (to keep the jellyfish away). Is that a false memory or did she actually do it? If so, who was she (and where did she swim from/to)? -- Kainaw (talk) 03:50, 13 May 2006 (UTC)
HappyCamper speaks of " Lake Ontario, which I think is a lake in Canada". Kind of hope that's a joke. If not, or for anyone who doesn't know, Lake Ontario is partly in Canada, and partly in the United States. -- Trovatore 20:12, 13 May 2006 (UTC)
If you ask me, I have no trouble believing that HappyCamper was only vaguely aware of a "Lake Ontario", and even less vaguely aware that it was (partially) in Canada.
Reminds me of a story I heard. Some high school in Missouri was entertaining the thought of teaching foreign languages to their students. The idea was shot down. The parents were adamant: If English was good enough for Jesus, it's good enough for us! Loomis51 04:07, 16 May 2006 (UTC)
Dear Madams / Sir,
I find no article on "backward walking" in the Wikipedia, do you think some experts can contribute to writing an article on this issue?
Thank you very much for your kind attention.
Cheung-shing YEH
I basically have 2 questions:
-- Seejyb 10:19, 14 May 2006 (UTC)
When we see or look from the earth to the sun & moon, is it in every 15 years, 17 years or 19 years their visual movement meets at the same date & day?
For multiple choice questions, when in doubt, choose "C". I'd therefore guess that the answer is 19 years although I too have no idea what the question means. Loomis51 11:25, 17 May 2006 (UTC)
I was recently told the World Health Organization has published a formula for people to mix up a homemade version of Pedialyte to help replace fluids and electrolytes for babies, especially when the babies have been having diarrhea. Can you tell me what that formula is?
The caveat about recipes for ORS is that studies have shown that a large proportion of ostensibly literate mothers in developed countries cannot follow a simple recipe so that concentrations are within 20% of intended. The premeasured envelopes are not foolproof but safer. alteripse 02:49, 14 May 2006 (UTC)
If blackholes exert an attractive force on light, what effect do they have on the speed? Thanks guys.
-Timothy
Is there an easy way to reverse engineer a SHA-1 digest in Java? I am trying to construct the info_hash for the bittorrent protocol but what I'm creating doesn't match what I see when I open the torrent file in Azureus. Thus, I would like to see what string is being hashed so that I know what I should be hashing. For the record, I'm hashing the entire [d6:length...e] bit after "info", which I've been told is the correct way. Remy Suen 15:17, 13 May 2006 (UTC)
Servers are always left on overnight, and many people leave their desktops on too. Are notebooks different enough that this practice should be discouraged or not performed at all outright? Remy Suen 15:17, 13 May 2006 (UTC)
I collect autographs. I have a letter from the Rockefeller Foundation dated Nov. 4,1953 thanking a lady for wanting this autograph as an outstanding citizen, it is signed M. Theiler. Who is M. Theiler, and what did he contribute perhaps to science or humanity? Thank you, Linda
Any information would be greately appreciated especially on his biography.Thanks
Hello,is someone ( or maybe Wikemedia itself) planning to releases DVD's of wikipedia? If not, then why not....because it would be a good idea to promote it this way also!
There are people working on this, but it's a tough job to really police everything that will go on a "fixed" version. See Wikipedia:Version 1.0 Editorial Team. -- Fastfission 19:18, 13 May 2006 (UTC)
How can I transform a regular telephone handset (such as this -> Image:Phone handset.jpeg) into a mobile phone " handsfree" kit (of course it would not free one of your hands, but you get the point), connectable through a 2.5mm subminiature jack. Perhaps this is not so relevant, but the handset uses a regular RJ11 jack, with four cables (Black, White, Green, Blue) and I intend to connect the 2.5mm jack into a LG mobile phone. Afonso Silva 20:25, 13 May 2006 (UTC)
Thanks people! And thanks Seejyb for the website, it seems that my ideia was correct, hehe! I'll have a thing like that, so cool! Cheers! Afonso Silva 11:02, 14 May 2006 (UTC)
If a body attached to one end of spring executing simple harmonic motion(SHM) on friction less horizontal surface then how to derive the formula of time period T of this body-- 86.62.206.4 03:20, 14 May 2006 (UTC)
Thats good article but "how to drive the equation of time period i.e T=2π--"will u explain this only-- 86.62.206.4 04:29, 14 May 2006 (UTC)
Since these tend to come in standardized sizes, 468x60 for one, wouldn't it be really easy to block them all by instructing a browser to not load all images of those specific dimensions? I dimly remember a program called Webwasher which offered this function, but most web browsers and popup blockers do not. Is there any reason why this option isn't as widespread as it should be? -- 61.6.59.73 05:27, 14 May 2006 (UTC)
If you took that approach the ad vendors could react by just varying the size slightly, say to 467x60. Thus you would be fighting a moving target. StuRat 11:09, 14 May 2006 (UTC)
You are provided with 10 small identical pellets with each of mass about 0.5g and volume about 0.8 centimetre cube. Describe an experiment how you will determine the density of each pellet as accurately as possible.
How does the supercruise function work in a jet engine?
Here we go - yet another bird question... :)
It's been really hot and sunny here recently and I have noticed that my local gulls have been hanging around on the flat rooftops nearby soaking up the rays. There is one particular factory roof that I pass every day that is made of sheet metal (aluminium?) and painted black. From my basic understanding of high-school physics, dark objects basically absorb the sun's light energy and radiate it as heat, right? So, after a few hours of continuous direct sunshine, a black rooftop would become incredibly hot to the touch, right?
If this is the case, then how is it that the gulls are able to perch on the roof for extended periods of time without showing any apparent discomfort? Some of the birds were even sat down, napping and didn't seem bothered by the heat rising up from beneath them in the slightest (in fact, they looked pretty content with life). As an experiment, I placed my hand upon a black car nearby and timed how long I could hold it there - it wasn't long and my palm was red raw afterwards (it was a *very* hot day).
How on earth do the gulls avoid burning the skin on their feet and general heatstroke? The obvious answer would seem to be that 'gulls are physically tougher than humans' - but can anyone be more specific? -- Kurt Shaped Box 07:19, 14 May 2006 (UTC)
Another couple of gull-related questions that have been bugging me for ages (I like gulls, what can I say?)...
1. It's an oft-quoted 'fact' that gulls can drink salt water with no ill effects. I watch gulls a lot and I have never seen them do this (they like to drink from puddles of fresh water). I can understand that they might *prefer* fresh water and drink it over salt, if available - but if they can drink it, what mechanism do they use to remove the excess salt from their bodies? Gulls do not have the tubenose desalination systems of fulmars and albatrosses.
2. Can gulls unhinge their lower jaws like certain snakes do when swallowing large items of food? This is an argument that has been on a slow boil on a mailing list I'm on for the last couple of weeks now. They can certainly open their mouths *very* wide but photographic evidence is inconclusive.
Thanks for your help, guys. :) -- Kurt Shaped Box 07:37, 14 May 2006 (UTC)
Why is it that humans decompose only after death? Why can't the fungi, bacteria, etc. attack and decompose you when you're alive?
For the record, decomposition does not require bacteria, fungi, 'etc. When someone dies, the lack of oxygen replacement in the blood stream means that muscles cannot "reset" actin-myosin binding, and thus the person enters what we call rigor mortis. A person comes out of rigor mortis about 24 hours later when those bindings disintegrate (for reasons I am not aware of off the top of my head). But again, none of this requires any action by bacteria/fungi. Raul654 19:42, 14 May 2006 (UTC)
what is the meaning of the word "symmetrical monodisperse architecture"?i tried searching in wikipedia but couldnt find the meaning.any help would be appreciated.
thanks
is the nile river still the longest river until now? If not, which is? Thanks. Carlrichard 10:25, 14 May 2006 (UTC)
why is the convex lens a diverging mirror ? why do the rays of light donot converge in it?
What's this. I'm not sure of the spelling but I think it should be a measuring unit.And it should be connected to gravity somehow.
Are breeds in domesticated animals analogous to races in humans? I suspect that because a breed is characterized by a higher level of inbreeding, and races are poorly defined, they aren't. JianLi 14:23, 14 May 2006 (UTC)
All analogies have correspondences and non-correspondences unless they are identities. The validity is usually determined by the context and purpose of the analogy, which you have not provided. Therefore the correct answer is "yes and no". You are welcome. alteripse 14:25, 14 May 2006 (UTC)
Hm...I mean "are they similar in terms of intra-group genetic variability and inter-group genetic overlap." JianLi 14:42, 14 May 2006 (UTC)
Much better question. Much harder too. I think there are some analogous features. Both animal breeds and human races are usually identified by the distinctively recognizable association of a relatively small number of aspects of external body appearance. I am guessing that breeds of dogs or cats differ in a relatively small number of genes that mainly affect timing and duration of action of various body part genes ( evo devo) and I suspect these genes play little part in human racial differences, which depend more on the statistical association by geography of minor polymorphisms of genes for aspects of skin and hair development. Note that "purebred" is a socially-defined term with respect to animals and requires pedigree information. Analogous concepts with respect to humans are also purely socially defined and have little biological meaning except as a statement that the last 2-3 generations of your ancestors originated from the same small geographical area. alteripse 15:06, 14 May 2006 (UTC)
I think it also depends on at what level races or breeds are defined. The main "races" of humans are so large in comparison to the whole population that it's easy to be "pure" Asian or white or black, even though there is a large amount of intermixing within each group among the various sub-groups. And all races have undergone basically the same selective pressures, while artificial selection for animal breeds is much more varied, depending on the whims of the humans who create the breeds. JianLi 15:13, 14 May 2006 (UTC)
The so-called "purebred" dog breeds tend to represent a very high level of inbreeding, so probably show a low level of genetic variation. I would draw a rough analogy to the royal families of Europe that – at least until recently – represented a fairly small population that didn't interbreed much with outsiders (at least, not officially). With both purebred dogs and royal families, one tended to see a much higher incidence of certain genetic disorders.
Drawing a general conclusion about much larger populations of humans (or dogs, for that matter) is much riskier. Human groups that originated with a small number of founders tend to be more genetically uniform, though again this depends on the degree of interbreeding that has taken place with outside groups. For instance, some research suggests that half of all Ashkenazi Jews originated from as few as four women, based on studies of mitochondrial DNA. TenOfAllTrades( talk) 15:24, 14 May 2006 (UTC)
I was working in the laboratory and accidentally got some stains of brady's reagent on my lab coat. Please how do I get it off?
I mean i wanna Ask why can't there be any alien species in this universe... Tell me-----
By the above asked questions i believe that you all must be convinced that such can happen. We humans need Oxygen but Oxygen is not the sole need for some other race, right! So, there can be an existence of Aliens very well...
And mind you if any Alien species do visits us we need be very very cautioned becuz. if these species is able to visit any other planet by help of spaceships then they are really more than 500 years advanced than us.... They are a type of biggest threat to us and may b having instant destruction weapons to end us!......
my Dr. has told me I have a very high CED count on a blood test he has done. He said it has to do w/ inflamation, and this is what is causing my pain. He is trying to find a Rumatolagest who will accept Gateway INS. I have no idea what any of this means. I know I have arthritis of the spine. What is CED count in blood? What does all this mean? Thank you, David C. Shoenfelt
What is the name of the volcano erupting in Asia? I would prefer it if someone would paste this section on my my talk page to make it easier for me to find, but I also have this page on my watchlist. Thanks. Robot569 15:56, 14 May 2006 (UTC)
Back at school the other week we were talking about photography and fixing agents and such in Chemistry, and I stated to the teacher that I had heard, from some TV program or another, that the first fixing agent was discovered by accident, so to speak. An unsuccessful photograper/scientist (in the sense that his photographs kept on developing and eventually were all black) had been mixing around chemicals trying to find a fixing agent. Being unsuccessful one day, he decided to quick working and placed his bottles of chemicals and a picture or two in a cupboard. The next morning he found that a bottle had fallen over during the night, spilt a substance onto a picture, and voila! he had a fixing agent. My chemistry teacher was quite intrigued, and asked me, just out of interest, to research the story. I went on to Wikipedia, and because I didn't know the name of the particular scientist or photographer, found it extremely hard extracting the information. Does anyone know who the person was, and the exact details? Is the story even true? Many thanks -- Zooba 16:09, 14 May 2006 (UTC)
I have a bit of a problem here. I have an external Hard Drive of my own creation. It's a normal Seagate 80GB in an aluminum enclosure, which I purchased. I connect it by USB 2.0 to my computer. Recently it has been moody and refused to turn on sometimes. That problem seemed to work itself out and now it turns on fine. The problem comes when I plug it into the USB port on my computer. Windows knows I plugged something in, as it makes the device found sound and the icon appears in the task bar. When I go to My Computer it is not there and any program that can access a disc drive crashes when it looks for devices. The only way I can think to fix it would be a reformat, which I would rather not do. Any suggestions would be appreciated. -- yaninass2 | talk 17:55, 14 May 2006 (UTC)
Apparently it is Windows fault. I popped in my trusty Knoppix DVD and the External worked fine. I just assumed it was a hardware problem. Now to find a way to write to the External from Knoppix, since it doesn't seem to want to. -- yaninass2 | talk 18:37, 14 May 2006 (UTC)
The External drive is in FAT32 already, as I use it with my home Linux box. The permissions are probably wrong, but I don't have much experience with permissions in Linux and even less in KDE. -- yaninass2 | talk 18:55, 14 May 2006 (UTC)
chown
to change ownership. It's probably a problem with how you mounted it; you should check /etc/fstab.
Isopropyl
18:59, 14 May 2006 (UTC)If I have the drive plugged in, the System Properties will not even open, let alone Device Manager. If I open Device Manager and then plug the drive in, it shows up as a USB Mass Storage Device. If I try to open its properties, Explorer freezes until I disconnect the drive. It gets better and better. -- yaninass2 | talk 20:07, 14 May 2006 (UTC)
My entire purpose for using the external is so that I can save all my important data to it before I reformat my main Hard Drive. This Windows installation has logarithmically declined in usefulness and stability. The problem seems to run deeper than just the External HDD and I need a reformat and reinstall but I would like to save my stuff. The hardware is apparently fine, as it all works in Knoppix. "Hard drive of my own creation" means I took a normal 80GB EIDE Seagate Hard Drive and put it in an aluminum enclosure with USB2.0 functionality which I purchased. Thanks for all your help so far. It is much appreciated. -- yaninass2 | talk 23:41, 14 May 2006 (UTC)
Voltage is AFAIK, simplified, the difference in energy levels between bodies. Can one claim that earth's body has a certain level of voltage? Perhaps by comparing it to other bodies in space? Thanks in advance, hope this isn't too far from reality. 213.161.190.228 09:59, 15 May 2006 (UTC) Henning
I'm pretty sure I have OCD.
Everytime I go out with friends, I keep checking my pocket each minute to make sure the cell phone is there.
When I lose my pen, I look for it under the couch, and I don't find it. Then I get up, go look under the couch again, and I don't find it. So I repeat 2 more times, thinking that it will suddenly reappear. But of course it doesn't.
What do you guys think? OCD or not? Thank you.
Do the vitamins and provitamins in shampoos actually do your hair any good? Don't they just get washed down the drain when you rinse? User:Zoe| (talk) 21:38, 14 May 2006 (UTC)
Why does it have peanuts? A Clown in the Dark 21:47, 14 May 2006 (UTC)
Why is there always babies in your vomit, even when you haven't been eating babies? Many people have told me (urban legend?) that what look like pieces of infant are actually chunks of stomach lining. Anyone have an educated answer?
There are two types of vomit: if it comes back from the stomach directly, it will not be having bile and the yellow discouloration is the color of the stomach juice... but if the vomit comes from the intestine, and this usually happens, then, yes it contains bile; as bile doesn't get poured on ingested food exept in intestine...... and for the carrot pieces, there are not so, it is just the remnants of the yet not fully digested food.
What does it mean to have a " poster presentation" or " paper presentation" ? Thanks in advance 23:47, 14 May 2006 (UTC)23:47, 14 May 2006 (UTC)23:47, 14 May 2006 (UTC)23:47, 14 May 2006 (UTC)
Do the raw berries of the coffea plant contain caffeine? What do they taste like? Can you make juice out of them? — Keenan Pepper 00:01, 15 May 2006 (UTC)
If a curve with a radius of 70m is pefectly banked for a car traveling 60km/h, what must be the coefficient of static friction for a car not to skid when traveling at 90km/h?
I don't know what they mean by "perfectly banked", is this the maximum speed with which there is sufficent friction force? Another possibilty? How would you go by doing this problem? Any thoughts? Thanks. C-c-c-c 04:17, 15 May 2006 (UTC)
I would like to have a fiddle around with a database (in Access format), but I don't have any data. So, are there any databases available online? Preference would be to those related to human-related (ie health, psychology etc). Thanks! 153.111.60.15 04:21, 15 May 2006 (UTC)
Hi, sorry to bug you guys...I'm not sure how to report an error on a page, so I'm using this feature...I guess it's kind of a question.
Anyways, I was looking at the entry for "blood charts". I am no expert in this area, and actually often have trouble remembering how the whole blood type thing works. So I was looking at the two charts for Donors/Recepients...and the two charts contradict each other completely.
So, I'm wondering what it is for AB blood types: Are you able to donate to anyone, or can you only receive from anyone?
Thanks!
If someone intercepts a https transmission, without cracking the encryption, can they figure out:
Why are leaves not black? For all the awe that advanced photosynthesis inspires, it seems counter-intuitive for leaves of plantlife to be any color other than black. Why are they reflecting away that valuable green light? -- Demonesque 10:36, 15 May 2006 (UTC)
Are there certain kinds of bacteria or viruses that are immortal?
thank you!
gracy,13
This article uses the phrase 'effectively immortal'. [55]. You could also use the phrase 'philosophically immortal' to describe bacteria which constantly split, so that they never actually 'die'. They may split so much, however, that no molecule from the original still exists, but what the hey.. -- Zeizmic 12:53, 15 May 2006 (UTC)
most things do die after reproducin its just that they leave another generation to continue their species and nothin else and comin to the question of immortality .......wen an organism is born on earth it is bound to die .that simply answers the question.
Use Newton´s laws how to acheived terminal speed to free falling objects?
Or, let's try and look at it from the point of view of Newton's laws. I was hoping to talk you through it, so you could do it yourself. At terminal velocity, the object isn't accelerating any more; it is at a constant velocity. I think it's the first law that tells us what being at a constant velocity means as regards the forces on the object. Look at that and have a think. Then come back here, say something, and we'll keep going. Skittle 18:05, 15 May 2006 (UTC) terminal velocity is nothin but inertia.-priyanka
I was recently thinking about my habit of leaving my home computer running 24/7. It serves no purpose really, especially since it only takes about 45 seconds to completely boot up, and it's not doing anything terribly important when I'm not using it. Still, I feel an urge to leave it on all the time, to the point that I get uncomfortable if I know it's not running.
Afaik, the only real benefit of leaving a computer on is in preventing thermal creep which can cause premature failure, but I end up buying myself a new computer every 9-12 months anyway so it's not like i'm worried about that. Am I too attached to my computer, and is this some sort of way of anthropomorphizing it by keeping it 'alive' all the time? I must not be the only one who acts this way, are there support groups available? -- Jmeden2000 16:05, 15 May 2006 (UTC)
There are 8766 hours in a year. Let's say your computer, excluding monitor, uses 200 watts=0.2 kilowatt.
My electric bill says I'm paying $0.11430 / Kwh, (check yours).
(That's a numerical coincidence that the watts is numerically equal to dollars /per year, in my case) Let's say you use your computer 8 hours every day, ie 1/3 time. So every year you send 2/3 * $200 = $133 to the electric company FOR NO BENEFIT. In ten years, that's $1330. Let's say you own a computer for 60 years out of your life, that's $7980 over a life that you send to electric company, (not counting lost interest) FOR NOTHING. Back to yearly basis, using 1752 kwh / per year, 24-7. Let's say there are 50 million computers in use daily. ( probably on the low side, just a guess), 1752 kwatt hour *50e6 = 8.76e+13 watt hour (per year) A typical nuclear power plant, or other, is 1 gigawatt, say, so in a year it produces 1 Gwatt * 8766 hours = 8.766e+12 watt hour (per year) Therefore it takes 10 powerplants of the gigawatt capacity to power those 50 million computers. If they are used 1/3 of the time but ON all the time, that's 6.3 power plants running continuously FOR NOTHING. (except to waste resources and environmental degradation.) I started with a computer using 200 watts. Some of the latest overclocked, high end ones have 500 watt power supply, multiply above by 2.5. Plus monitor, if big CRT, left on, add 1000 watts, or whatever. Factor of 5. etc. Did that cure you? -- GangofOne 03:04, 16 May 2006 (UTC)
What are the expected next changes through evolution for man? Are there any that are slowly happening now? Are there any predictions for the future changes?
I am astonished that intelligent people can even consider the proposition that "evolution isn't happening anymore". All it takes for evolution is (a) multiple versions of genes, and (b) some versions of some genes being associated with being more or less successful at reproducing than other versions. If you dont think both are still happening, please retake biology 101 and restrict your opinions to things you know about. I realize this sounds harsh, but good grief, people, it's hard to be polite about this degree of silly ignorance! alteripse 18:42, 15 May 2006 (UTC)
Sorry, but both of you are still making arguments that show you still fail to understand how simple the definition of evolution is: all it takes is a pool of genetic variation and a source of new variations, and differences in reproductive success of those gene variations. The population then undergoes changes in the varieties of genes expressed in living organisms. Everything else you are trying to load into it are arbitrary exclusions and special cases that show you dont grasp the basic concept, which is breathtakingly simple and powerful, and which operates in a thousand ways in the human population. alteripse 00:43, 16 May 2006 (UTC)
To answer the original question, I would expect that, to go along with smaller jaws, wisdom teeth will slowly evolve out of existence (I don't have any, but maybe that's due to my total lack of wisdom). The elimination of the appendix may also occur eventually. While not many people die from impacted wisdom teeth or appendicitis, there are some, and certainly more than those who die from lacking wisdom teeth or an appendix, so I would expect these obsolete body parts to slowly evolve away. StuRat 04:02, 16 May 2006 (UTC)
I imagine the areas we will (or are) evolve most quickly would be (in no particular order): the brain (e.g. see the controversial Flynn effect), the immune system (shaped e.g. by HIV, malaria, and other diseases), the liver (its the organ with the second largest amount of DNA dedicated to it, second to the brain. We're also producing lots of new toxins). As for more interesting morphological changes, I imagine our backs will develop new structures, as spines are pretty crappy for upright beings as they are (they seem much better suited to fish and quadrapeds to me) — Pengo 09:32, 16 May 2006 (UTC)
And, Yes of course we're still evolving. Even in the most "modern" societies evolution still occurs. Someone who gets sick just for a couple of weeks due to a genetic "disorder"—and is unable to woo a mate or look after offspring—is going to pass on less DNA than someone without the disorder, that is on average, when we talk about a thousand generations, which is the type of timespan we use in evolution talk. No one has to be killed (or fail to "survive") for natural selection to occur. — Pengo 09:32, 16 May 2006 (UTC)
Lots of junk speculation and misunderstanding of evolution in these paragraphs. For example, the business about smaller jaws, larger heads, and less hair was speculation from the 1950s based on popular ideas of aliens that still gets repeated-- there was never any science behind it. Those of you who think conscious mate selection is a big factor are missing the enormously bigger factors-- the societies with sizeable numbers of people who think like that have very low birth rates and the selection pressure exerted by that type of process is minimal. Think of humans like any other population: where is the most reproduction occurring? Perhaps the most obvious near future evolutionary trend will be a reduction in the number of people with light white skin. Another will be selection for resistance to AIDS, at least in the african population, analogous to the selection for tuberculosis resistance in the European. Finally, to illustrate how futile this whole discussion is, how reproductively successful are those who write encyclopedias and argue about evolution? alteripse 16:14, 16 May 2006 (UTC)
Phil still doesnt understand reproductive advantage and is trying to cram it into an unnecessarily small box. It means producing more offspring in the real world, nothing more complicated. People with darker skins greatly outnumber people with lighter skins and are reproducing at much higher rates, so the disparity grows each decade. Furthermore, intermarriage produces darker skins than pale white, not lighter, and the opportunities for intermarriage are rising not falling. Despite war, famine, etc, in Africa and South Asia I suspect the average human skin tone in 100 generations will be darker than the current average. Isolation and diferential selection pressures in different continents probably led to the marked color distinction to begin with, and will probably turn out to be a relatively temporary distinction in the long run (assuming the human race has a long run). Don't twist this into something I am not saying, or a complaint, just a prediction based on trends that seem quite unlikely to reverse (barring separation of the continents, reduction of travel, complete reversal of birth rates and socioeconomic status, etc). I doubt an average twenty human beings in 10,000 years will have as wide a variety of skin tones as we can current round up for an American TV commercial (unless we implant color genes or chameleon genes-- in which case green might be as likely as pale pink). alteripse 16:36, 17 May 2006 (UTC)
Hello. I have an array of strings. I need to order this array alphabetically. I really have no idea how to do this, but maybe I've headed in the right direction: can anyone tell me how to extract the strings and convert them, especially the first letter of each, into an array of chars? Any help would be grealy appreciated. Thank you. -- Chris 18:52, 15 May 2006 (UTC)
Why does fruit rot?
What is it called when an animal can change it's sexuality when it's in an environment with only one type of sexuality so that it can breed.
Thanks
-- 86.134.85.23 20:21, 15 May 2006 (UTC)
what is the lowest and highest frequencies that a sperm whale can hear, i've checked the sperm whale section but can't find anything on hearing. Thanks
-- 86.134.85.23 20:37, 15 May 2006 (UTC)
The whale song article has some info on the hearing range of other types of whale. Maybe you could download a sperm whale song and look at the frequencies present in the file, (provided the compression hasn't chopped anything significant out) I would guess that sperm whales could hear most of the noises that they produce themselves. JMiall 23:22, 15 May 2006 (UTC)
I have just finished a new concrete driveway and since spring I cannot keep it clean. Everyday i come home from work it is completely covered with what seems to be bird droppings. However, after cleaning the driveway off so my children can play on it, I sat and observed. These birds are flying overhead with what looks like a little white ball in their mouth. They glide over the driveway and drop it, splattering it all over my driveway. What is this that they are carrying and dropping on my driveway?
Thank you for taking the time to look for this answer. I have been all over and noone can give me an answer.
Brian Wardlow [email removed for privacy]
What kind of bird is it? What's your geographic location, and what sort of food is available around there that they might be carrying? Not that I personally would know the answer even if I knew that stuff, but someone else might. -- Trovatore 21:10, 15 May 2006 (UTC)
Will combining lye, amuminum foil, and water produce Hydrogen? Zoobtoob 20:41, 23 May 2006 (UTC)
Recently, the Toronto Star (Canada) had an article stating that just after the point of the Big Bang, in a trillion trillionth of a second the universe expanded to roughly the point where it now is. Given that Einstein stated that nothing can go faster than the speed of light, how is it possible for the universe to expand at a rathe that would have to be faster than the speed of light?
Also Popular Science, http://www.popsci.com/popsci/aviationspace/d1e527098dcda010vgnvcm1000004eecbccdrcrd.html
What actually happened is that space between all the things in the universe increased (was created) at a rate faster than the speed of light, the things themselves did not move per se.
The
cosmic inflation article is pretty thick with science, and it's hard to find any easy-to-understand analogies so I'll lay out this one (extremely general):
Imagine the universe as a spiderweb and at each of the points where the strands meet, there is some matter. At the beginning, the spiderweb was infinitely small, and suddenly the spiderweb expanded to about the size it is now. Since the matter never moved from its original position on the web (the fabric of space), it didn't have any problems obeying relativity and the speed of light. Essentially the only thing that changed (moved would be inappropriate) is the extent of the fabric of space.
freshgavin
ΓΛĿЌ
05:52, 17 May 2006 (UTC)
When a car has a spec like "1488 cc", what does that mean? J. Finkelstein 03:41, 16 May 2006 (UTC)
I spotted the owl in this picture a few days back, and I can't figure out what it is. It's a largish owl -- I'd guess it's standing about a foot to a foot and a half tall in the picture, with a three-foot wingspan. It was in an area of mixed pine forest, fields, and wetlands, about fifteen miles outside of Spokane. Any ideas on what it is? -- Carnildo 04:25, 16 May 2006 (UTC)
To me it looks like a young eagle owl of some kind. Don't know what country you're in. Definitely a young owl.
Could you tell me how does ddrsdram is non-volatile in construction as ram's are volatile in nature?
If I remember correctly, all transistor-based memory is inherently leaky (and thus violatile). Raul654 05:02, 16 May 2006 (UTC)
sir/madam, i'm chandan a project trainee in hindustan aeronautical limited, bangalore.i'm in need of detais of vaned diffuser design in centrifugal compressors, please do the needfull. thank you.
I need to calculate some things for a project but I need some accurate measurements for Solar radiation and average wind speeds for Newcastle, NSW.
If any of you can help, that would be great. The solar radiation levels I need in the form kWh/m²/d in monthly or daily averages if possible.
Thanks Wayne
We know that air is compressible,water is not.Then how is the concept of pressure applicable to water?In case of air,it can be pressurised in a cylinder by a piston,but not water.. —The preceding unsigned comment was added by 210.212.194.215 ( talk • contribs) 09:56, 16 May 2006 UTC.
How do non-living neural networks that can continously learn and adapt like their living counterparts work?Ex:- logic gates are fixed and perform a fixed boolean function,they cant change the boolean function by themselves to suit the environment. —The preceding unsigned comment was added by 210.212.194.215 ( talk • contribs) 10:00, 16 May 2006 UTC.
Well i would like to know with an simple illustration how does the feedback change its main function...
You know how there is different ways of learning (visual, auditory, kinesthetic etc) is there a set of questions or a app online to determine your domonent form of learning?
Why is Ibuprofen always pink in colour ? In all dosage form?
Tulsi A Shulka - 3rd year pharmacy student at Mumbai, India
how the scientists discovered that earth is spherical?
The earliest experiment to determine that the Earth was round and find it's approximate diameter was to note the difference on the angle of shadows from a fixed length pole observed at noon at two points along a north-south axis on the Earth. Observing the difference of angles and knowing the distance, it's then just a bit of geometry and trig to find the Earth's diameter. "Noon", incidentally, meant when the Sun was at it's highest point (when shadows were shortest), prior to adoption of time zones (which mess up everything). This experiment was done by an ancient Greek, Eratosthenes. StuRat 03:38, 17 May 2006 (UTC)
Wow, bad title. Anyway! I read somewhere, I can't remember where, about some kind of physical phenomena. To prove it, there was a picture of a rectangle-shaped box of plastic filled with water, seen from the side. Apart from at the sides, due to tension, the horizon of the box was flat, as one would assume. However, in the next picture, the box had been tilted slightly, and the horizon was broken off near the middle, so that the water on the higher elevation was above! Like... |_ _ _ _ ,.--------| Any help would be wicked! Henning 16:32, 16 May 2006 (UTC)
Whats the proper way to maintain a cande? Particularly one thats incased in glass. Should I scrape the sides if theres its only burning in the middle? Should I dump out the hot wax? etc.?
What exact quantity of food do they mean when they say 4 portions?
I have tried without much success to find an answer to this question. I've asked a number of people, including doctors and physicists.
Everyone knows that we run our personal carry-on belongings through x-ray devices which are said to be quite benign. My concern is with prescription medications, some of which contain organic substances. My situation is unusual in that I fly a lot, usually twice a week. So I am running these items through that x-ray device at least twice a week, sometimes more. I'm not worried about the radiation, but about possible damage to organic compounds.
Are there any studies about the cumulative effect on organic compounds of this type of exposure to radiation? Natuarlly I am just a little skeptical about swallowing drugs that might have been altered slightly due to this type of exposure. Lately, I have taken to cramming them in my pants pockets so that they are only exposed to the metal detectors, but this is not an optimal solution. ------------- 148.165.17.120 20:08, 16 May 2006 (UTC) Thanks, Far Too Frequent Flyer
find out if YOUR pills absorb THESE particular X-Rays: Next time you fly, put your medicines in one of the little trays provided by airport security, and place that separately from all your other possessions. Then make sure to get through the metal detector BEFORE your little tray comes through the X-Ray machine, and watch the screen of the operator. If you can't see your pills on the screen, they have not absorbed any radiation at all and no damage could possibly have taken place. In fact, it would even be better to remove your pills from any container or packaging, as the latter may well absorb more than the pills themselves. Once you find out, you may want to report your findings to all of us... Hope this helps you find peace with this issue. -- Michel M Verstraete 22:38, 16 May 2006 (UTC)
A human being becomes shorter in the course of a day, due to compression of the intervertebral discs. This is associated with dehydration of these discs. Now: a Daschund, sleeping all curled up through the night, compresses the intervertebral discs. While walking in the course of a day, the hanging body, curving convexly downwards and supported only at the shoulder and pelvis, could conceivably cause a distraction force between the vertebral bodies, "thickening" the discs. Does a Daschund grow longer by day, or "sag" more? -- Seejyb 22:05, 16 May 2006 (UTC)
(I posted this on usenet yesterday but no-one has responded yet. Thought that I'd try asking the nice folks here... :) )
I threw out a big pile of bread and ham for the gulls this afternoon. 'My' great black-backs came down and proceeded to chow down - carefully picking out all the pieces of chopped ham and leaving the bread untouched.
I'm certain that because I feed them several pounds of food (I have a deal with the local butcher for off-cuts, which I cook up for them, plus they get anything edible that I don't manage to get through) on a daily basis, they have realized that they can afford to be picky.
Serious question time. I've noticed that my four 'regulars' (one hand-raised by me as a baby and three others that have come to somewhat trust me) have started looking fat. They're getting very 'wide' and stocky-looking and you can see the ridge down the middle of their chests with the meat bulging on either side - in other words, they're getting to be right oven-stuffers.
I enjoy watching the gulls at close quarters but I don't want to make them lazy and unfit by overfeeding them, or make them too reliant on a human for food - do you think that I should stop feeding them completely? Is it a bad thing for a gull to be overweight? Will they actually come to rely on me completely for food and decide not to bother looking elsewhere if I continue? On the other hand, they're probably laying/raising chicks now and I don't want to do anything that could result in the neglect/death of the youngsters.
I'm a bit worried about them now. Don't laugh - I've grown quite attached to these birds now, especially the one I raised pretty much from the egg (she's grown into a huge, strong, magnificent bird now and has raised several clutches of her own chicks - yet, she's never completely forgotten me and for the last ten years has returned to nest on the rooftops near my house and hang around my garden).
Any advice would be appreciated, guys. :) -- Kurt Shaped Box 23:06, 16 May 2006 (UTC)
I recall tales of fish found frozen solid in ice, that become "alive" when thawed. I cannot find estimates of how long the creatures have been in suspended animation. Where would I look for information on this? Thanks -- Seejyb 23:20, 16 May 2006 (UTC) Think or thwim
I've been currently requesting more articles on weather instruments and the study of meteorology, however, I cannot find a couple of detailed answers to my questions. Maybe you can be of some help to me:
—Preceding unsigned comment added by 207.69.137.13 ( talk • contribs)
If you are mathematically-inclined, you may want to visit the page on primitive equations. Your second question has been adequately answered. However, your last question is meaningless because an air parcel can be saturated at any given temperature (at least within the "usual" temperature range normally experienced at or near the Earth's surface) by adding more water vapor into it. If the water content of the air is fixed, and the relative humidity (a particular water vapor measure implied by the units you are using) is less than 100%, you will have to cool the air sample to raise its relative humidity until you reach the Saturation vapor pressure. -- Michel M Verstraete 20:42, 17 May 2006 (UTC)
In what way does an 802.11 wireless repeater work? I suspect that doesn't make much sense on it's own, so: in my case I'm talking about an unwired box (specifically the Linksys WAP54G) configured act as a "wireless repeater" to another box (the same model) which is plugged into a wired network and acts as an access point. Does the repeater box act literally as if it's an extra aerial on the access point (which would be lovely), or is there a delay associated with the relay of the signal? What's the effect on performance? By performance I mean how does a client near to the access point perform compared with a client near to the repeater? I know the best answer to all wireless questions is "give up and plug some wires in" but unfortunately that's not an option here. Thanks a million. -- 87.194.20.253 05:45, 17 May 2006 (UTC)
Thanks for this. Do you know what the behaviour of a client that can "see" both the original access point and a repeater would be like? Does it choose who to receive / transmit from? Thanks again. -- 87.194.20.253 17:05, 17 May 2006 (UTC)
When reacting an alkali metal with Fluorine, Lithium has the greatest difference in electric potential and therefore will create the largest explosion, but when reacting the alkali metals with water, why is Lithium the least spectacular? Is it true that Cesium will have the strongest explosion? -- Chris 06:44, 17 May 2006 (UTC)
I have a Micro$oft Word file with _italic_ expressions represented by _underscores,_ like that. Is there some way of converting these to proper italics? I can think of several ways to do this outside Word (e.g. editing the rtf file with a text editor), but is it possible within Word?-- Shantavira 07:55, 17 May 2006 (UTC)
Hi I am trying to find a copy of this book it was produced by the W.H.O. it was a hand book on low tech machinery for developing countries our local library had a copy but someone cut the section on solar heating out of it , then someone fell in love and took what was left of the book. It had pedal powered saws and pumps , also covered methane producing digesters for small scale production. Thank you Vince Collis (vincefish.)
For a school project I need to find out how to build a paper tower out of a manilla folder. It can be held only with glue and has to at least hold 100 lbs.
You could probably make a 2 inch high honeycomb structure that would hold a spread weight of 100 pounds. If the tower needs to be a certain height, and a narrow aspect ratio, then it looks very, very difficult. -- Zeizmic 13:03, 17 May 2006 (UTC)
It's impossible to build a paper towel out of a manila folder. Ohanian 13:08, 17 May 2006 (UTC)
I once constructed a working table (capable of holding my 75kg weight) out of corrugated cardboard. It's close to the tube idea, but uses triangular cross-sectioned lengths, guled together into a honeycomb-like pattern (six equilateral triangles into a hexagon, tower made of seven hexagons in 2-3-2 formation, so 42 triangular prism shapes in total). Grutness... wha? 01:42, 18 May 2006 (UTC)
It has to be 4inces high and 4 inches in diameter
Dear sir, I have used this sie for first time. I am working with organization involved in galvanizing. I want to ask you how to remove iron from hydrochloric acid solution. Our seq. is Acid Degreaser, Hydrochloric acid, Water Rinse, Flux, Hot plate, Galvanize.
Can You please tell me how shall I remove iron from Hydrochloric Acid Solution.
Can Hydrogen peroxide treatment be used. I have found that using H2O2 give iron Oxide Precipitates which is very minute not easily pas out of the filtering media ( filter paper # 40) What i can use to filter the same.
Besides expanding, what else happens to a piece of wood in an oxygen-free room at 10000 degrees celsius? (Answer question on my Talk page ) Anonymous _anonymous_ Have a Nice Day 13:13, 17 May 2006 (UTC)
At high enough temperature the bonds will break and the components of wood would float around in oxygen free air. Ohanian 13:40, 17 May 2006 (UTC)
My cousin is suffering from staccato speech and breathlessness. Is this a recognised medical condition, if so what is the cause and is there a recognised treatment
did a leather thong stone throwing sling serve as a spear thrower thanks
It would be difficult to use a sling shot as an atlatl. alteripse 16:24, 17 May 2006 (UTC)
write down the seven base units of "system international"(SI) with their unit and symbol?-- 86.62.237.139 16:41, 17 May 2006 (UTC)
Actually, this does sound like homework. It doesn't look good having us do your work in this way, and trying to palm old schoolwork off onto us isn't recommended. A lot of this info will be in any old text or almanac; don't come here with it. Keep this page for its proper uses. Grutness... wha? 01:57, 18 May 2006 (UTC) (Da Vinci code? Feh!)
In Wikispecies you can list the species in a particular genus by the abbreviated format: G. species1, G. species2, etc. How do you do that in wikipedia?
My printer is a Canon i320 and the black ink has run out. Is there any way I can trick it into using the three colours to make black? My old Epson had either color or black, and if it had a colour cartridge it would *make* black. - Username132 ( talk) 17:34, 17 May 2006 (UTC)
In printing, one reason for K is you need to reduce the total amount of ink. Too much ink simply takes too long to dry. If you don't know exactly how much is too much, 270% is the rule of thumb (e.g. 90% C + 90% M + 90% Y + 0% K). Too much ink can lead to trouble. Good paper and slower printing may allow you to exceed this limit.
Let's say you want to print a rich black square on paper (spot color). If you only print 100% K on paper, this black square would usually be too thin to cover the paper. You need some CMY to make the 100% K even darker. Maybe you can try 56% C + 56% M + 56% Y + 100% K (total ink density = 268%).
You can also obtain a tinted black by adding a color to black. For example, 100% C + 0% M + 0% Y + 100% K gives you a very "cold" black.
It's good to use over-100% blacks. But misregistration can be a serious problem when you add colors to K. If you use C + M + Y to substitute black, you usually get an ugly muddy dark brown instead because inks are far from perfect. And a slight error in ink control would give you a tinted black.
If you know how to tweak Adobe Photoshop or similar software, you can control the amount of black to be generated by RGB to CMYK conversion. If you want to print using CMY only, just let it generate no black at all. -- Toytoy 00:07, 18 May 2006 (UTC)
why can you not hear sound coming from something inside a vacuum?thanks -- 86.134.85.23 18:21, 17 May 2006 (UTC)
is it acyually possible that the world, our universe ect. is just some kind of scietific experiment made in a lab by some kind of special race or something like that, thanks -- 86.134.85.23 18:35, 17 May 2006 (UTC)
http://www.wired.com/wired/archive/10.12/holytech.html God is the Machine, Simulated reality, http://www.simulation-argument.com/ Are You Living In a Computer Simulation? The Simulation Argument Nick Bostrom --- GangofOne 02:59, 18 May 2006 (UTC)
--Welcometocarthage
I've got a new bottle of concentrated HCl, and I'd like to know the concentration. I know that concentrated HCl is normally about 12M, but I'd like to know the concentration a little more accurately. I looked up the certificate of analysis from the manufacterer and found that this batch is 37.1% (w/w) and has a density 23.0 degrees Baume (equivalent to specific gravity of 1.1885). Anyone know how to use one of these facts to determine molarity? (This isn't a homework question!) ike9898 20:00, 17 May 2006 (UTC)
I'm trying to find the genus and species designation for the mukade, a type of poisonous centipede native to Japan. I've been unsuccessful on Google so far. Can anyone help? Thanks, — BrianSmithson 20:19, 17 May 2006 (UTC)
I want to make an azeotropic mixture of HCl and water from concentrated HCl. I suppose I can do this simply by diluting the HCl to the concentration of the azeotropic mixture (which I think is 6.102M). But I am wondering if there is a practical laboratory method to be more accurate. I was thinking that I could, for example, make up a 6M soln, and boil it in the fume hood. I suppose eventually enough water would boil off and the solution would be exactly the azeotropic concentration. No? I suppose I could monitor the temperature to know when I had reached that point. What would happen to the concentration if I made the starting concentration greater than that of the azeotropic mixture and then boiled?
(Again, this isn't a homework question...) ike9898 21:09, 17 May 2006 (UTC)
When a platoon of soldiers approaches a bridge they "break step" and no longer march as though on parade because a march in unison could resonate with the bridge and cause it to collapse. Makes sense for the wooden structure over which farmer Brown drives his cows to pasture, but are there well-known world bridges where this could be reasonably possible (for use as an illustration in a talk, not for field testing!)? How would one go about calculating this? Could one give a high school student such a project? Would he/she have to approach a University Civil Engineering dept and do high-tech computer simulations, or is it simpler than that? -- Seejyb 21:55, 17 May 2006 (UTC)
Well, the Millennium Bridge, or 'Wobbly Bridge', in London had this problem. So much so that shortly after opening, they had to close it to add dampeners and support structures. There was feedback from the slight wobble each person caused, leading other people to walk in step with them which increased the wobble. Skittle 22:04, 17 May 2006 (UTC)
There is a famous single case of a bridge collapsing due to resonance from soldiers crossing it in step, probably the Angers bridge mentioned above. This was before resonance of structures was fully understood or analyzable. It was that disaster that created the procedure of breaking step over a bridge. Note that the Tacoma Narrows Bridge collapsed not due to structural resonance, but due to aeroelastic flutter, which is resonance of a complete structure-airflow system. This is the part that is tested in wind tunnels, though we can model it pretty well these days with good rules of thumb and sophisticated computer analysis. The mathematics of resonance are not all that complicated for a simple system, once you know linear algebra, particularly eigenvalue problems, but I think it's still beyond the abilities of a high-school student. moink 20:48, 19 May 2006 (UTC)
what is the best treatment for enlarged prostate.? i have problem starting flow after ive been abed for fewhours. no problem during yhe day
thanks frank
In Vannevar Bush's 1970 autobiography, he refers to a British WWII development which he calls the " Mark X mine", which was a mine which, from his description, used sound detection as a way of "homing in" on submarines when lobbed at them as a depth charge. I've Googled around a bit and found nothing like this out there. He describes it as: "The Mark X mine was a self-propelled target-seeking torpedo. Dropped in the swirl where a submarine had just submerged, it would listen to the sound of the submarine's propellers and steer itself to run into the submarine with fatal results." Any clue what this was actually called? -- Fastfission 22:45, 17 May 2006 (UTC)
On average, what time does the sun rise and set? I don't think it matters because it is an average, but my latitude is approx 35 north. Thanks. 152.163.100.74 01:07, 18 May 2006 (UTC)
what product is formed if incomplete combustion occurs in a car engine? —The preceding unsigned comment was added by 142.165.111.39 ( talk • contribs) .
What, then, would the SG pundits consider to be the nitrogen oxide which represents complete combustion? Nitrogen dioxide only? I would have thought that the correct answer to this homework question would be simply "CO". Further questions might lead to why there are also oxides of nitrogen in the exhaust gas. G N Frykman 17:39, 18 May 2006 (UTC)
I was merely giving the answer which I was taught, and is accepted in Scotland by the exam board. We were only taught "carbon monoxide and oxides of nitrogen". It doesnt specify which ones exactly. But the question doesnt ask what ALL the products are, just to name some. And as many go beyond the scope of Standard Grade/GCSE chemistry, I believe the given answer is suitable.
Why can birds sit on powerlines? -- Mac Davis ⌇☢ ญƛ. 04:42, 18 May 2006 (UTC)
Power line electrocution is a killer for the big raptors. See this: [63] Power companies put a lot of effort into reducing the carnage. -- Zeizmic 12:23, 18 May 2006 (UTC)
Ooh! I have a variant on this question. For trains that run on electrified rails, such as on the London Underground, there is a live rail. I travel on parts that are overground and so I see pigeons perching on these rails all the time. I often think that they must come close to electrocuting themselves (surely they would only need to briefly touch the ground while perching on the rail?), and ditto for the rats scurrying around on the underground parts of the system. But I've never seen this happen. Maybe it's this thing about the rails only being electrified in the area before and after a train, or is there another reason? Carcharoth 21:15, 18 May 2006 (UTC)
For the bird to get electrocuted, the current has to enter from one part of the body (a leg) and come out of another (another leg or the wing etc). But these two legs are 'shorted' by the conducting wire and hence, the potential difference between the points where the bird holds the wire is (nearly) zero. The current flowing thru the bird's body is in the inverse ratio of the resistances of the bird's body and the conducting wire and hardly any current flows thru the bird's body. Even if a human is to hang on to one live electric wire, negligible current would flow thru his body and nothing would happen to him. But the momeent and other part of the body touches the other wires or any path to the ground, a considerable current would flow and cause death or injury. Many birds die when they sit on one wire and peck on other wire, or when they spread their wings. -- Wikicheng 07:25, 19 May 2006 (UTC)
Moved from misc.
61.25.248.86
06:37, 18 May 2006 (UTC)
In high school, I used to sleep through half of my classes, but so did everyone else, so I didn't really care. After I breezed through that, I ended up sleeping a lot in University too. That was a little more problematic, and no matter how hard I faught to pay attention during lectures, a lot of the time I just couldn't keep my eyes open, and I eventually just started sleeping in a lot and going to later classes. Even now, while working, I feel incredibly tired in the morning, though I'm almost always standing up so I don't really get a chance to close my eyes (thank god).
I may be returning to school sometime soon, and I want to work a little harder this time, but I don't know how I can get over my sleepiness.
I've never really been that susceptible to agents like nicotine, THC, and caffeine, so although I recently started taking coffee in the mornings (I don't even like it) I don't really feel the effects of it. For some reason, drinking coffee or coke at night prevents me from falling asleep, though.
I generally get enough sleep (8-10 hours on working days) but it doesn't really seem to matter because I go through the whole day yawning and rubbing my eyes anyways. I am not any lazier than most people, but I know that working out in the morning will wake me up (I've tried it). My problem with that is that I don't understand why I have to resort to something so extreme (waking up before 5am!) when most people here don't seem to have any problems, even when having only slept 6 hours. Is there some kind of perpetual sleepiness condition that I might have? Anything that can help?
61.25.248.86
03:33, 18 May 2006 (UTC)
Insist that your doctor sends you to a sleep clinic. Apparently, many doctors still don't do this for sleep disorders. There are about a dozen possibilities (types of disorders), each with a different treatment. -- Zeizmic 12:26, 18 May 2006 (UTC)
Hello, just recently i donwloaded lots of ebookz, most of them in pdf format. I found that reading from pdf files is really uninteresting. The way the pages scroll down, and everything else works is too uncomfortable for me to enjoy the reading. So is there any softwares avaliable for converting pdf files to word (".doc") files. Or alternatively, is there any way to copy all the text and images from a pdf files, as it is, to a word file? I tried to copy, but both cannot be copied simultaneously. So is there a solution for me? Thank You.
I mention (purely hypothetically, of course) that open-source PDF readers are easily available, such as xpdf. You could, hypothetically, get the source code, and comment out the places where it won't let you do things (such as print the file) based on permissions. I looked at the code once (hypothetically) and it appeared fairly trivial to find these code snippets and circumvent them. Of course if you're in the United States there's that pesky DMCA—I think the prescribed penalty is breaking on the wheel. -- Trovatore 16:26, 23 May 2006 (UTC)
I want to know how much water is in the flesh of a watermelon. Searching the wikipedia article and Google I see the figure 92% over and over again, but no where seems to say if this figure includes the rind and seeds or not. I'd like to know how much of a watermelon is water, excluding the rind and seeds. (This is to settle a bet) — Pengo 10:27, 18 May 2006 (UTC)
Is that 92% by volume or 92% by weight? Ohanian 11:10, 18 May 2006 (UTC)
NBME Question bank - STEP1 USMLE hi, i am lookin for question bank series book, that is used to prepare for step 1 USMLE exam. Can any one let me the latest edition details along with the author name. If referenced to publications then can u please let me know the publisher name.
thanks.
This might seem like a crazy question, but does anyone know whether fish produce flatuence or not?-- Bjw e bb ( talk) 18:25, 18 May 2006 (UTC)
Last week a hummingbird built a nest in my backyard and laid a single egg. The next day it was gone. My questions: How rare is it for hummingbird to lay a single egg rather than two? Can a mother pick up an egg and carry it away after she has laid it?
I've just moved into my current house, and I would like to be sure that the vegetables I am planting in the back yard will be safe for my family to eat.
Plants grow very nicely in the soil, and it is full of earthworms and other small animals. My concern comes from the fact that when I dig, I find a certain amount of old trash, and pieces of glass, brick, and concrete, and that the neighborhood, Hampden, Baltimore, Maryland, was once the home of many old industrial sites.
I have also seen among the red earthworms a few bright yellow ones, looking not unlike the worm shown in this Nature article, " Don't eat yellow worms". The article suggests that this coloration may be a sign of high levels of arsenic or copper.
What is a sensible level of caution on this question? Is there a way to find out the history of a particular piece of land? All the soil testing services I have found are for pH, nutrients, or parasites; is there an easy way to have the soil tested for contaminants or toxicity?
Thank you; 128.220.220.95 18:59, 18 May 2006 (UTC)
For city gardens, it might be best to do 'planter gardening' or raised beds. See a gardening book on this. That way you are assured of fresh, safe organic material. -- Zeizmic 23:43, 18 May 2006 (UTC)
Here's a question for all you tech people out there. If human developement is continuously improving computers, palm pilots, and everything else, why is it we are still stuck in an age where we rely on the most costly almost 80year old technology of four wheels on the ground? shouldnt we be in a more economical way of hovering either only a couple inches off the ground or couple miles above the ground and in a safe way. I know movies are just movies, but we should still be at an age where we move past prehistoric wheels?
And a question linking to the top: Why is it that oil and gas are still the dominant source of fuel in the world? Souldn't we be in an age of alternative fuels, to almost electrical technology that can allow us to constantly reuse and recharge? Thank you for your imput. -- 134.29.205.119 19:00, 18 May 2006 (UTC)
Infrastructure for production, storage and distribution of a new fuel system would be very expensive to install. Think about it: you would have to get rid of every gasoline/diesel/propane station and replace it with whatever, a hydrogen tank center or something. The fuel companies would hate that. And they would lose all their institutional knowledge. A changeover period of some years, maybe a decade, would be necessary. Do you remember when leaded fuel was outlawed in the 80s? That was a big deal for many people. This would be much more challenging. Refineries, fuel companies and governments have vested interests in retaining the current fossil fuel power method. However, cars become more fuel-efficient all the time, so every year our supply of fossil fuels will actually last longer. Vehicles also pollute in decreasing amounts with every new model. Now, if you want to become an elected legislator, and take your ideas to government, you can. There you will encounter stiff resistance in the form of lobbyists, other politicians, and just plain regular folks who downright don't like change. Change happens slowly. That's why laws like the Clean Air Act are important, because they force manufacturers to steadily improve their products. Eventually a target can be set that is impossible for an internal combustion engine to achieve, and then you will get your hovercars. But the executive has to take the plunge on that, and at present they aren't; they are actually moving back from it.-- 24.80.70.174 19:15, 18 May 2006 (UTC)
I recently expanded the diaphragm disambiguation page, but some of the terms seem to lack articles, and some other terms need someone to explain them properly. Does anyone here know enough to expand on the battery use of the word diaphragm, or the more general anatomical term found in organisms other than humans (such as bryozoans and gasteromycetes). Also, I am now confused about how diaphragm relates to septa and septa (biology). Can anyone clarify the different meanings of these terms? There seems to be a fair bit of overlap.
Oh, and I know it is not science, but if anyone knows enough about engineering and architecture to explain diaphragm wall, that would be great as well! Carcharoth 20:22, 18 May 2006 (UTC)
So hopefully someone will clear that up! THanks again. Carcharoth 01:49, 19 May 2006 (UTC)
Does anyone know where I can find a photo, or at least a diagram showing micrognathism in humans? I've been having a bit of trouble finding anything readily online. - Tim Rhymeless (Er...let's shimmy) 21:38, 18 May 2006 (UTC)
What is the size of the biggest mosquito ever? I killed one today, and want to be sure it was not the biggest available model. -- Roundedge 21:43, 18 May 2006 (UTC)
I have open on my lap this month's (that is to say, June's, because ever magazine I've ever received fell through a wormhole on the way) issue of Popular Science, and I'm looking at rather a curious article. It's centered around some of the most recent work of Hydra Biosciences, a company apparently dedicated to the dream of effective regeneration of dead and damaged tissue. My question is, what do you think of this? Does it sound like something we can look forward to in twenty years, or someone just trying to get attention? Black Carrot 21:55, 18 May 2006 (UTC)
ok, so my perental told me when you approach the speed of light time slows down. i dont understand how or why. i got the following idea: first since time is an arbitrary concept agreed upon by human(i would like to know what exactly time is if im wrong, please) say speed wasnt measured int distance/time but, oh banannas for example. so the speed oflight would be say 300 banannas, 0 banannas being completely still. as an object increases banannas time begins to slow down; so at 150 banannas "time" is twice as long(for what though? the observer or the object?) so if at 1 bananna the object traveled 6 feet at 150 banannas 1 minute would become to, but the object is still goin at 150 banannas, so now it travels 12 feetin a "minute" because it has twice as much time to travel at the same speed. pretty much i would greatly appreciate someone telling me why is it impossible to reach the speed of light, the questions in the parenthese and wats wrong with my example -- 69.140.210.163 22:05, 18 May 2006 (UTC)Artem
Let's try by analogy.
The reason time slows down is because all (chemical/nuclear) reactions slows down as light "slows down".
Ohanian
22:18, 18 May 2006 (UTC)
can someone please clarify:
what causes the mass to increase? thanks again -- 69.140.210.163 23:28, 18 May 2006 (UTC)
Question: what causes mass to increase as an object approaches the speed of light? Answer: Now assume that you are applying a constant force on an object. Remember that F = M * A You can rewrite that as F = M * dV / dt Re write as M = F * dt / dv So what you have is Mass is Force times rate of change of time per velocity. Now listen carefully. As an object approaches the speed of light, it takes longer (more time) and longer to gain an extra/additional velocity (say an additional 1 meter per second). So dt / dv becomes larger and larger. Therefore the Mass is getting larger and larger.
Ohanian 08:03, 19 May 2006 (UTC)
Unfortunately, the monkeys eat the bananas, and "banana time" ceases to exist. You should have tried apples instead. Carcharoth 00:47, 19 May 2006 (UTC)
how many teeth do sea urchins have.
Can dioxgenyl (O2+) bond with say, chlorine, to form something like O2Cl?
I seem to remember that this ion was vital in the discovery of inert gas compounds. See xenon. G N Frykman 18:18, 19 May 2006 (UTC)
In the kinetic theory of gases what is the formula of P?-- 82.148.105.112 03:40, 19 May 2006 (UTC)
P is pressure, force divided by area. See [64]. alteripse 04:10, 19 May 2006 (UTC)
So "what is this formula tells us about <1/2mv²> in the kinetic theory of gases or other formula similar to it"
Sorry, the question as asked is uninintelligible. Please restate in English and one of us may try to answer. alteripse 10:35, 19 May 2006 (UTC)
hi,
NBME Question bank - STEP1 USMLE hi, i am lookin for question bank series book, that is used to prepare for step 1 USMLE exam. Can any one let me the latest edition details along with the author name. If it can be referenced to publications then can u please let me know the publisher name.
thanks.
Since recently, we have a Venus Flytrap and a Sarracenia in our home. Following wiki-instructions from the Venus Flytrap article, I am watering them only with distilled water, and happily they seem to be doing very well (touch wood). Yesterday my partner went shopping and mistakedly brought back a bottle of deionized water instead of distilled water. Can I also use this to water them or not? Thanks for info. --JoelAbend
do we have a discussion of the "consensual" inertial frame of reference of the Universe somewhere, defined, I suppose, by the distribution of background radiation, and (possibly) by the center of mass of the Universe (which I realize may lie outside the Universe for geometrical reasons)? Are there any practical effects tied to the existence of such a de-facto preferred inertial system? Can we measure our speed relative to it? dab (ᛏ) 09:08, 19 May 2006 (UTC)
Can a fish out of water see? The refractive index of water is about 1.33 and air is about 0. That means the image shall form in front of the retina and the fish shall suffer from myopia.
How does an amphibian animal deal with this problem? -- Toytoy 09:59, 19 May 2006 (UTC)
if I jump of a plain at a height of 3.5 km. with how many speed do i fall down?
In a competitive market, the firm's price equals the minimum average total cost (ATC)How? If the marginal revenue is greater than the marginal cost, profit will increase, and vice versa. So if the MR is greater than the MC in a competitive market, why is the profit maximising level when they are equal? Dont you need the marginal revenue to be bigger than the marginal cost in order to make profit? —Preceding unsigned comment added by 192.115.60.109 ( talk • contribs) 08:21, 19 May 2006
There, some people are very nice and have helped you with your homework (a little bit). In general, companies hate this, and whine about Commodification in their business. -- Zeizmic 17:17, 19 May 2006 (UTC)
Hi all,
I'm currently inquiring into the legality of this with town council, but it may be okay, so I figured I'd do some preliminary research: how much lawn would I need to have ... actually, let me broaden the question: what are the practical considerations when looking into having a sheep as an outdoor pet to act as a lawnmower during the summer months, and having it slaughtered in the fall for winter mutton? I have a double lot, which means about 1200 feet of grazing area. Breaking this down into sub-questions: How much land is necessary to sustain a single sheep? Are sheep okay solo, or do they get bored/depressed/weird if they don't have companionship? What are the medical requirements of having a sheep... cost for a vet visit, etc.? How much does a full-grown sheep weigh? I have a very large outdoor shed that's practically unused, so the plan would be to buy a little sheep, convert the shed into a barn area, fence in the whole property, and let the sheep live and graze all summer; in the fall, pay a slaughterhouse to "convert" it into meat. Is this a practical idea, or a fool's paradise? -- MattShepherd 17:17, 19 May 2006 (UTC)
How much land is necessary to sustain a single sheep? I once had a pet sheep that operated quite nicely on a 1/8 acre section (that's about 20 x 25 m). It all depends on the type of land you've got though, since this affects the stocking rate. Are sheep okay solo, or do they get bored/depressed/weird if they don't have companionship? Sheep are weird even with companions. They do get a bit bored, but as long as they've got something to keep them interested (my one seemed to like the odd old cardboard box). They also appreciate human comany every now and again, so going out to pet it is recommended. In other words, treat it like a pet, not like a lawn mower. How much does a full-grown sheep weigh? they can be lifted if you're strong, but they are fairly heavy, especially when they have a full fleece. At an estimate I'd say 100 lb (45 kg). You've got an apt name, BTW! :) Grutness... wha? 05:30, 20 May 2006 (UTC)
I was rubbing it the other day and for no reason at all it just fell off? I didn't think i was rubbing it that hard, will it be ok? I heard from a couple of my friends that it's perfectly normal, and that it's supposed to fall off? even that it's able to grow back. I kind of miss it, and wish it hadn't fallen off, will I be less of a person for going through life without it? Will not having it affect my masculinity at all? will i not want to eat meat anymore? how long does it take to grow back? can it be reattached? or is the area too sensitive for that kind of surgury? I mean I have extras, and from now on I'll never rub it so hard again. But still, I liked the one I had-- Question asker 18:05, 19 May 2006 (UTC)
I searched online, however was unable to locate any references. I was standing on my balcony overlooking the Thames and it is a muddy river with constant boat traffic. My question is this... why is the foam so incredibly white, both at the bow and stern? -- Djymz 18:27, 19 May 2006 (UTC)
What would a programming language have to do to be truly new? I mean to truly do something which no other language had done before? Is this limited by what computer chips themselves can do? What I'm getting at is that it seems to me that comparisons between languages are comparisons between how they do things and how easily they do things (as well as things like which paradigm(s) they allow / encourage, what type system they use etc etc), not between what they actually can do.
Thanks -- 87.194.20.253 18:51, 19 May 2006 (UTC)
"Is this limited by what computer chips themselves can do?" - No! Any mathematical question can be reformulated and programmed into a Turing complete programming language, almost by defition. Programming language development today centers around "productivity" - sure, you can write anything C/C++, but do you really want to spend all that time coding it in C/C++ when you can do it in {Java/Python/Perl/Ruby/etc} in a fraction the time? More specifically, programming for parallel computers (multi-processor, or multi-core machines) is *HARD* and the software tool simply don't exist (I should know this very well since I'm doing my PhD in parallel computing). Raul654 22:40, 19 May 2006 (UTC)
I consider quantum programming languages to be new, but they aren't going to run natively anytime soon. Melchoir 22:58, 19 May 2006 (UTC)
hi, everything i've read about LPG tells me that for running cars LPG is more economical, less polluting and is generally better for cars than petrol. in these days of global warming and i guess, "energy security" ( as i understand it, which i may not, gas, at least in Europe, comes from Russia) why don't governments promote it more heavily? at least in fuel-taxed societies, if the government increased taxes to pay for converting peoples cars, surely it would cut carbon emmissions over night? basically, i guess i'm actually asking, are there any cons to LPG that i don't know about? thanks 87.194.20.253 18:58, 19 May 2006 (UTC)
hi, all the chat about evolution got me thinking (in a lateral sort of way), it's widely assumed (at least by me) that bi-lingual children, regardless of what languages they speak , are better at learning new languages than monolingual children becuase their concept of language is more refined from an earlier age (e.g. a french/english child would have an easier time learning arabic say, than someone from a monolingual background). is this the same for any other subject areas? if i teach my child long division at the age of three, will he go on to find nuclear science a walk in the park? or how about if i get him started on shakespeare, will he then go on to have mastery of the english language beyond his years? if not, what is it that makes language so special and, if so, aren't we shooting ourselves in the foot by starting school at the ripe old age of 5? 87.194.20.253 19:14, 19 May 2006 (UTC)
elaborate please-- 71.249.0.202 20:55, 19 May 2006 (UTC)
This isn't a discussion board. It turns into one, sometimes, but a good question usually helps jump-start things. Yes, neutrinos have mass. This is observed due to neutrino oscillations, and the Seesaw mechanism may be involved. What else would you like to know? -- SCZenz 00:16, 20 May 2006 (UTC)
Yes, but they don't take Communion. -- MattShepherd 12:49, 25 May 2006 (UTC)
I've looked in time and not found anything relating to the question "Is time continuous or is it formed of discrete quanta". Any pointers to anything discussing this? -- SGBailey 21:33, 19 May 2006 (UTC)
I have 3 pulley blocks: 1x single, 1x dbl, 1x triple. The multiple blocks are sheaved side by side. What is the correct way to rove (run the rope through) the blocks to avoid them twisting? I am seeking a mechanical advantage of 6:1 for lifting. PS - The single pulley will be the tail out as it has a ratchet. Regards -JAG.
This has annoyed me for quite some time now, so I am going to ask here. A friend of mine says that leaving a bottle of soda without the cap on will not reduce the amount of fizz in the bottle faster than if one was to screw/unscrew the cap every time one needed to refill. Have there been any studies on soda losing fizz? It is an economical issue, actually. Today I was going to the store with some bottles, and found that there was half a gallon in total of unfizzy soda left in the "empty" bottles. You CAN'T drink unfizzy soda, it's like torture of some kind. The only good thing about soda losing fizz is that it becomes something to clean the pipes with, albeit not very efficiently. Henning 22:46, 19 May 2006 (UTC)
I need something to reply to that "soquid" nonsense. Is it a gel or an emulsion or what? — Keenan Pepper 01:34, 20 May 2006 (UTC)
Hey, check out the article now...according to it, it's a " Bingham plastic"? JianLi 20:25, 26 May 2006 (UTC)
Okay, I've actually gotten into a discussion about this with some people and I want to ask it here: Do you think it would be possible to domesticate a giraffe? I mean, obviously it would be an outdoor animal --but I think they might be quite fun as pets or at the least an alternative farm animal like ostriches. Same for sea otters, although I don't think they'd be as easy to take care of (and I have no interest in eating them) --sure you could place them in a pool but the chlorine would probably not mix well --would they require a base amount of salinity? They're sooo cute! Okay, the first question is serious, not the one about otters. The latter just rock. -- Bobak 02:10, 20 May 2006 (UTC)
Wow! Thanks for all the feedback. I really thought otters weren't going to work, but I guess they could too. Just reading the Wikipedia synopsis of Ring of Bright Water was depressing... I think I'll pass on it (sounds like the Old Yeller of otter movies). I remember seeing otters similar to the small-clawed otters at the Osaka Aquarium Kaiyukan (they were small and freshwater), I guess those would be possible. I guess I'll have to be a millionaire some day to raise them, though. As for giraffes, thanks for all the suggestions as well. Thanks for the reference to the Giraffe Lady, very interesting stuff! -- Bobak 19:26, 20 May 2006 (UTC)
what is the difference between bacteriophages, viruses and retroviruses —Preceding unsigned comment added by 211.28.236.104 ( talk • contribs)
Answers taken from the opening paragraph of the articles:
— Pengo 03:22, 20 May 2006 (UTC)
I've heard of a saying in physics that "time travels at the speed of light".What does it mean by that?
Are cockroaches known to cannibalise within their species or other species? - Tim Rhymeless (Er...let's shimmy) 06:29, 20 May 2006 (UTC)
This is not at all disimilar to what the homo-sapien females do to their male counterparts. 12.183.203.184 17:31, 27 May 2006 (UTC)
I've recently bought an Aigo A208-1G MP3 player. It is supposed to support DRM 9, but I downloaded the sample track from tesco but it wouldn't play - on my computer it made windows media player crash and on my mp3 it doesn't appear in the list of music (this is what happens to non-music files). Do you think it is the file, or my system that is the problem? Is there anywhere I can download a different drm 9 test from?-- Bjw e bb ( talk) 10:49, 20 May 2006 (UTC)
Oh, I've just realised, it does appear in the list on my MP3 player, it just doesn't play - it skips to the next song.
I've managed to fix the problem by reinstalling media player and using it to transfer the file to my mp3, along with the license.-- Bjw e bb ( talk) 13:10, 20 May 2006 (UTC)
On 19 May 2006, Rush Limbaugh said, "If the closest relatives of humans are chimpanzees, then why do they still exist?"
What is the best argument to counter such a query? I am very much baffled in light of the fact that humans and chimpanzees have inhabited the same regions throughout history. Patchouli 10:54, 20 May 2006 (UTC)
Simply put, chimpanzees are our relatives, not our ancestors. They are better described as our distant cousins than as our grandparents. — Pengo 13:42, 20 May 2006 (UTC)
If my closest relative is my brother, why does he still exist? Gdr 12:42, 24 May 2006 (UTC)
XBOX 360s evolved from the original XBOX. Why do they still exist? 12.183.203.184 17:27, 27 May 2006 (UTC)
I remember reading about this in the 1980s (and our Quorn article mentions it too) - apparently the "big thinkers" decided in the 1950s that the world was headed for a global shortage of dietary protein (presumbaly due to some kind of cow shortage). Motivated by this, lots of folks tried producing protein from novel sources. I remember reading about some large organisation trying to produce protein by growing something (bacteria?) in an unwanted heavy fraction of mineral oil, only to be thwarted by the excessive levels of uric acid found in DNA and RNA (a problem solved by the makers of Quorn). Do we have an article about this supposed protein shortage, and about those novel alternative sources projects? It'd be a fascinating read. -- Finlay McWalter | Talk 13:39, 20 May 2006 (UTC)
What percentage of global warmingis caused by polution from transport?
I've recently kicked off a science related chat room, which readers and writers on the Science reference desk may be interested in:
Come along and ask a question or join the discussion on #wikipedia-science. All welcome. — Pengo 13:59, 20 May 2006 (UTC) </plug>
irc://
. You will need to open the channel in your IRC client (see:
List of IRC clients), direct your broser to send all IRC protocols to the client or get a broser that has an internal IRC client (
Opera does). --
Swift
00:41, 21 May 2006 (UTC)I analyze protein solutions with an electrophoresis system from Amersham called "PhastGel" (I've heard other people refer to them as 'mini-gels'). I'm not a molecular biologist and I just use this system because it is what was already available in my lab.
I never see 'real' molecular biologists use this type of system for electrophoresis. I'm pretty sure that this simple-to-use system has some weaknesses, but I don't know what they are. Basically I want to get an idea of what I am sacrificing by using this type of system, versus the type of system used by more sophisticated workers. ike9898 14:21, 20 May 2006 (UTC)
I need to determine the number of moles I used in a titration.
The gfm of NaOH is 40, and I used 38mL of it. Do I take 40 times 38...?
Please help! Thanks in advance!
I've checked the articel here on radio spectrum but can't seem to find an explanation for this: I found an old radio (vacuum tubes, etc) with different "bands" marked on the tuning dial (Weather, Foreign, Police and AM), but except for the "AM" dial (Which is written the same as it is now), I can't figure out what the other bands frequencies are, given their markings of things like "6.5" for the foreign on. Anyone with old radio info know what these bands corresponded to? Thanx. 68.39.174.238 19:11, 20 May 2006 (UTC)
Have a look at [66]. If that doesn't give you all the information you wanted to know about shortwave receivers...-- G N Frykman 19:55, 21 May 2006 (UTC)
This is partly inspired by the discussion above involving birds and power lines. I've heard all my life, from very reliable sources, that if you drop an electrical appliance into a bathtub while it's plugged in, and someone's in the tub, they'll be killed or seriously injured. How? Tap water is (if I'm not mistaken) almost infinitely less resistant of current than the human body, so according to my physics class, almost no current should pass through them. Besides, it would have to travel quite a bit out of its way to even reach them, if I'm understanding the circuit correctly: (one wire->resistant appliance of some kind->other wire) becomes (one wire->barely resistant water right next to it->other wire). Black Carrot 19:21, 20 May 2006 (UTC)
When I first saw this post I thought, "That sounds like something the MythBusters should test," and then I wondered if they already had. Sure enough, here it is. (It was confirmed, for those of you who don't want to follow the wikilink.) E WS23 | (Leave me a message!) 07:11, 21 May 2006 (UTC)
Can someone explain to me how to balance this equation in a double replacement reaction?
NaOH + C6H8O7 = ?
I read that the specific heat of hyprogen gas goes up with temperature. When it gets hot enough for the hydrogen to change into plasma does this tren in rising specific heat continue, or is there a whole diferent ball park estimate for a "relitivly" low temperature plasma specific heat. I think I read some thing about the specific heat changing due to the diassosation of H2 into H1 so maybe this levels off, no?
How do rewriteable CDs work? I assume that recordable ones simply laser away the unwanted material, leaving behind the correct sequence of pits and bumps. But rewriteable ones must be able to create bumps also. How do they do this? D a niel ( ‽) 19:28, 20 May 2006 (UTC)
i may not know excalty what causes volcanos to erupt. but i understand that the pressure builds up to a a point where it cant be contained anymore. so heers my idea, why not manulay release the pressure every so often so the pressure cant build up to a destructive point. ie by say drilling into the volcano away from populated areas?-- Colsmeghead 21:19, 20 May 2006 (UTC)
the study of bacteria bacteriology -- Seejyb 23:06, 20 May 2006 (UTC)
One of the oldest ones from science class. NaHCO3 in water turns into Na+ and HCO3-. Add an acid, and the HCO3 reacts with the H+ in the acid. AFAIK, pH means percent of Hydrogen ions, ie H+. The question is simple: Will the reaction become more violent the higher pH my acid has? Henning 23:11, 20 May 2006 (UTC)
You've both fallen for a very old trick. The reaction will become more violent the lower the pH. And I do believe that the "p" of pH originated from the German for percentage. G N Frykman 08:51, 21 May 2006 (UTC)
In the reaction between sodium hydrogencarbonate and a dilute acid, the sodium ions do absolutely nothing. It bears no relation to the reaction between alkali metals and water. The more H+ ions there are per unit volume, the faster will be the reaction between them and the hydrogencarbonate ions (giving carbon dioxide and water). The pH scale is slightly odd in that the lower the number, the greater the concentration of H+ ions. I said that you had fallen for an old trick - in many exams, the question is asked - which has a higher pH, a strong acid or a weak acid? And the answer is the weak acid. In a similar way, a weak alkali has a lower pH than a strong alkali. To summarise - a low pH indicates lots of H+ ions which will give a fast reaction with sodium hydrogencarbonate. G N Frykman 11:38, 21 May 2006 (UTC)
Spot on, Henning! But you're not likely to notice much difference comparing the reactions of a strong acid and a weak acid just in the basic neutralisation reaction (acid + base) except that weak acids produce a marginally smaller temperature rise. Where it does become obvious is in the reactions of acids in which a gas is given off, and they are: acid + metal (eg magnesium); acid + carbonate (eg calcium carbonate) and the one you started with, acid + hydrogencarbonate. In all of these the speed of fizzing is dramatically slower with weaker acids, such as ethanoic acid, compared with the typical strong acid, hydrochloric acid. David Iberri - I was trying to keep it simple. Direct comparisons of pH can be made as long as the acids are of equal concentration. G N Frykman 17:25, 21 May 2006 (UTC)
How do animals obtain water in the winter when water sources are frozen.
Although this is a very silly question for us Canadians, I actually found a quote: "Studies in Canada have shown some cows have gone 50 to 60 days with snow as the sole water source without any adverse effects." However, it quite uncomfortable to take a shower in snow. -- Zeizmic 01:13, 1 May 2006 (UTC)
How are fullerene molecules formed? Is there a reaction mechanism process that creates hey!!!!!!!!!!!!!!!!! them or is it something else. I am particularly interested in buckminsterfullerene and its formation. Thankyou. Vollsa 01:05, 1 May 2006 (UTC)
I dont now much but i am kind of concerned because i dont now what is wrong with me; my foreskin is retracted, but not past the head, and a line of skin runs from the base (on the underside) of my shaft to near the opening which connects the shaft to the skin. it is visible on the outside of the skin. Please help.
I am a virgin and a recent teen (i've been a teen for a couple years) -- 216.197.192.136 03:06, 1 May 2006 (UTC)
Sounds like your frenulum. I used to have one myself. Scared the shit outta me when it snapped. Howard Train 05:29, 1 May 2006 (UTC)
Anyway, to the question-poster: Does it stick out, three-dimensionally? How is it different from the surrounding? When did it appear? You're about 14-16? -- Mac Davis ⌇☢ ญƛ. 07:58, 1 May 2006 (UTC)
Yah it's '3D', it just connects from by where the scrotom connects to the shaft and goes to near the tip of my penis. So nothing is bad about it though? I can live happy with it? i think it is a frenulum...
Yah, i google image searched it and it's a frenulum....
Are there any pictures on frog anatomy...or any other type of science-related subjects? Mostly people I know tend to be visual. Thanks!
I know that mass and energy warps space-time but why?
How did the British Navy preserve lemons and limes that were used in preventing scurvy? A lemon may last several weeks if kept in ideal conditions, but it seems that the time between the fruit being plucked from the tree and the time it was delivered to the sailors would be a few months, or maybe even as long as half a year. The lime or lemon would have to be harvested, packaged, shipped, and stored before being finally served. Packing it in salt would just draw out all of the fruit's moisture. Does anyone have an answer?
--Sputnik
You can water them with snow. -- Zeizmic 17:33, 1 May 2006 (UTC)
When I try to login in MSN Messenger, sometimes (most times) the window about the unread messages in my e-mail account pops up but the rotating icon keeps rotating, impeding me from viewing my contacts. Has anyone else experienced this problem? Does anyone know how to solve it? Thanks.
Relativity often emphasize that the laws of physics for everyone are the same no matter what speed they are travelling at. Why is that?
The laws of physics are the same all over our universe( and probably all others if there are any more ). irrespective of what speed you or the observed object is travelling relative to each other. They are this way because if they were not the laws would not be universal.
In other words the universe would break down and implode or flash into non-exixtence, because the physical laws in zones with common borders would not be compatible. Some may say that the laws could be different if there were volumes of space containing nothing between different areas or universes.
This is also impossible for at least two reasons. 1. there can be no areas where 'nothing' exists ( neither time nor space) for the obvious reason that if there is no space there is no separation and 2. If there was something called space between the two areas then such entity would have its own border regions which must by definition come up against the formerly mentioned regions and therefore be in contact.
As you can see the speed of objects or entities does not have any real meaning in this context because
1.Even if the two objects were travelling say in opposite directions at the speed of light ( as in fact photons often do ) each would be travelling AT the speed of light relative to the other. They must by definition respond to the same laws of physics because even though travelling at light speed they would have at some time have been in the same area.
2.If they are travelling at different speeds, say one is 'stationary' and one travelling at 180,000 k p sec. in the opposite direction, then what happens ? If the laws were not the same we could not 'see' each other, obviously because we would not be using the same laws. If we did 'see' each other we would have to conclude that we were subject to the same laws. If we swapped places and we were then on the object travelling at 180,000 kps what would happen ? We would perceive that the other object was travelling away from us at that incredible speed and that we were stationary ( if we did not have any other reference point which was within our sphere of observation )
You can also ask the questions: a) what happens when the two entities are travelling toward each other ? b) Which one is moving ?
-- Antipodeite 13:37, 8 May 2006 (UTC)
Is a synaute a real thing? zafiroblue05 | Talk 12:44, 1 May 2006 (UTC)
i think people need to stop inveseting so much faith in the ridiculousness (sp?) of google. i could be mistaken but i believe it's filtered by republican war machines! but like i said i could be wrong....now off to macdonalds! PSYCH! peace -jms
Do you mean sign out ? That's a real thing !-- Antipodeite 13:06, 8 May 2006 (UTC)
in gsm technology, we have MSC codes(represented by first five digits of the 10 digit cellular number). what is the counterpart of this in the CDMA technology? is it diffrent in various parts of the world? if yes then , what is the trend in india?
dominic, new delhi.-- 210.210.24.146 12:55, 1 May 2006 (UTC)
Is it possible to use sextants or similar low-tech tools for Celestial_navigation in an activity like geocaching? The accuracy of many GPS receivers is about 3 metres. What would be the typical accuracy of using astronavigation techniques? Does it even come close to 3 or 10 metres or is it too fuzzy to use for geocaching? -- Sonjaaa 13:19, 1 May 2006 (UTC)
Torge, Wolfgang. Geodesy (3rd ed.). mentions the accuracy of some observational instruments. For stationary observation the Danjon prism astrolabe achieved a precision of ±0.05". For field measurement, transportable instruments mentioned are: prism astrolabes, zenith cameras (±0.5" or better) and the universal instrument (a theodolite with attachments for astronomic observations, ±0.1" to ±0.3".) All these instruments require a very accurate integrated time source, synchronized with International Atomic Time. EricR 16:36, 1 May 2006 (UTC)
I want to add an image of Leslieville to show the boundaries of the neighbourhood, can I use google maps or if not then what online mapping source can I legally use to make the image, showing all the streets and the boundaries?-- Sonjaaa 14:34, 1 May 2006 (UTC)
Ontario has digital base maps here [1] I just emailed them to check the public domain status, since I don't see anything on the web site. -- Zeizmic 15:48, 1 May 2006 (UTC)
Neat, I also found this:
OpenStreetMap --
Sonjaaa
18:21, 1 May 2006 (UTC)
Does it mean that I can't use Google earth pictures in my website, even if I don't make any money out of it ? Say I use a high resolution map of a city and lable the streets etc and display it so that it is helpful for others to find their way around ? If i really want to do it, can I get google's permission ? How do I get it ? -- Wikicheng 18:26, 1 May 2006 (UTC)
What about this?? http://geodepot.statcan.ca/Diss/2006Dissemination/Data/download_e.cfm Maybe we can use this data for a map of Toronto neighbourhoods? Do we have permission?-- Sonjaaa 19:16, 1 May 2006 (UTC)
Although this is depressing, throughout Canada, you will find the same thing. If you email them, you will get the 'crown' speech that I got. Only if they proudly splash 'public domain' on their web site (as the National Archives) are you in the clear. -- Zeizmic 01:50, 2 May 2006 (UTC)
Let me assure that being a wikipedian I wasn't planning to misuse the google map. I just thought that it would be useful to setup a website which would allow people to navigate thru a city easily. Definitely not looking for loopholes ! My apologies if I sounded that way. Well... I may write to google and see what they say. Thanks for all the info and help -- Wikicheng 12:08, 2 May 2006 (UTC)
I live in the USA and am taking my USA Digital Canon Rebel XT to Europe this summer. Ordinarily I would take a voltage converter but the specs on the back of the battery charger say the "input" is 100V - 240V so I am thinking that other than the issue of incompatible prongs, I could theoretically use this charger without converting the voltage (just perhaps get an adapter so the USA prongs can fit into a European outlet). Doesanyone have any knowledge about the implications of the specs on the charger? Do you know anything about the Rebel's battery charger? (It is the CB-2LT charger).
Hi i have a used Toshiba television set from 1997 which has only Closed Captioning and no fancy features. i plan to take it to India. i understand that the US has NTSC colour television system while India has the PAL colour television system. Is there a way that the television set would work in India? [++ Any specific knowledge of duty at Indian Customs would be welcome too ++]
Regards Babbu
Dear Kainaw and Finlay McWalter
Thank you very much for your prompt and informative replies and apt suggestions.
i will certainly do as you say.
The shipping for the TV would cost over $300.
Regards,
Babbu
Hi there,
I was wondering how many carbs are in a packet of sugar. Or Even easier, how many grams of sugar are in a packet, because I have a carb count for 100 grams of sugar but I don't know by what to divide it.
Thanki
A restaurant packet of table sugar is typically 1 teaspoon of sucrose, equal to 4 g or 16 cal. Sucrose is 100% carbohydrate, readily digestible to about 50% glucose and 50% fructose. alteripse 05:15, 2 May 2006 (UTC)
I need to find information on army paying for my medical studies. I heard that the army pay for you university studies if you join the army for a short period. Does anyone know a good website to find information on this? I am looking for information for british universities.
Cheers
Google is probably your best bet. I'd advise against speaking to recruiters as they're notorious for over-hyping military scholarship programs (at least that's the case here in the U.S.). Best, David Iberri ( talk) 21:23, 1 May 2006 (UTC)
Since stars work out by Hydrogen fusion and at later stages Helium and then much heavier atoms as it begins to collapse, but where do atoms aobve the weight of iron come from, because only hydrogen was created in the big bang, so where do the heavier atoms come from since it becomes energy-wise unprofitable to fuse atomic nuclei beyond iron.
Also once a predominant amount of the nuclei have gone through whatever process is the answer to the question above, will stars cease to exist, or will there be fission stars, or what. Cheers Philc T+ C 16:36, 1 May 2006 (UTC)
As I understand it, the fuller cycle seems to be, and this is a laymans understanding only in outline:
Hope this helps, and if it's roughly accurate add it to some appropriate article on creation of elements or stellar processes. As said, its my lay-understanding only, but I think its roughly ok as a broad non-technical answer. FT2 ( Talk) 15:09, 2 May 2006 (UTC)
Does there currently exist a technique which permits the synthesis (as opposed to the sequencing) of a specific desired strand of DNA or RNA of known sequence, presumably using its base nucleotides? If so, how does this work and what are the limitations of the technique? As this might be a lengthy answer, a very brief explanation and a reference for more data would be terrific.
(I am already familiar with PCR, and using and selecting an existing sequence/allele for amplification or expression in-vitro. I am curious about synthesizing very long strands or sequences which may not be found in nature.)
As a correlary, is there a simple, high-yield, automated process for protein synthesis from its amino acids? Especially for longer, more sophisticated proteins?
Thank you very much for your help. :)
-- 216.226.42.167 17:11, 1 May 2006 (UTC) Alaiyo
Thank you to the both of you who offered me a nudge in the right direction. Yes, I am a newcomer, I am also a "she", and I had a brainstorm the other night on overcoming some of the protein synthesis challenges to which you alluded. DNA synthesis seemed like a reasonably obvious extension of the problem. Your leads (and admonition for caution in terms of safety/socio-economic implications) are very helpful. Have a terrific day!
Recently i purchased a deo which states under the ingredients list the following "alcohol denat" & "parfum". I read the comprehensive article with regard to "alcohol denat" in wikipedia site and all he ingredients used in making it, but was unable to find out the same with regard to "Parum" Please help me to get the ingredients used in making the same.
thanks for the reply, but a small clarification, i read in an article that there are two kinds of alcohol used in cosmetics and perfumes (1) alcohol denat (2) alcohol parfum.
if parfum is french for perfume then what is alcohol parfum?. appreciate your views on this
If you travelled into space with a compass which way would it point once you'd left earths atmosphere??
Why is it that some medicines have their name, for examples (this is made up) Magensium Hydrochoride BP. What does this stand for if anyone knows? Thank you
What is that exactly? Is it a preservative or just a solvent for the drug to be in a solution form? Thank you for the hasty reply.
BP does stand for British Pharmacopoeia. The comparable label in the US is USP, which stands for United States Pharmacopoeia and indicates that the product meets the specifications of the USP. This is normally used of older generic products (e.g., aspirin or Epsom salts) that you might consider "medicinal chemicals" rather than patented pharmaceuticals. alteripse 05:11, 2 May 2006 (UTC)
You have two balls perfectly next to each other on a perfectly smooth slope. Both balls are of exactly the same composition. When you roll the balls at the same time down the slope, they should both travel at exactly the same rate. Take the same situation, but this time make one of the balls hollow. Will the hollow ball be slower than the other because of friction from the air inside? Or for any other reason? Flea110 21:00, 1 May 2006 (UTC)
My guess is the 'friction' from the air inside would be minimal, the hollow ball would be lighter than the solid ball. Since it has the same surface area as the solid one it would be slower due to air friction of the air OUTSIDE.
Is there a simple test for the presence of sugar? I've been buying Nesquik made with Neutrisweet for years, but I bought some that has the appearance, texture, and disolving qualities of the sugared kind. I wrote tothe company about this, but they didn't understand what I was talking about. So is there a simple household test for the presence of sugar? Bubba73 (talk), 21:18, 1 May 2006 (UTC)
I have uploaded a photo of what I thought was perhaps a mushroom of sorts. I have since looked through a catalog of fungi photos and saw none similar. The fellow in the photo felt smooth, cool, and mushroom-like to the touch. It grew near or in decaying organic material in the shade. Does anyone know what it is?
Thanks for your attention. This is a great service. I used a hyperlink rather than the Image: in brackets because I didn't know if it was acceptable to actually display an image on this page. Hope that is okay.
-- Bad carpet 21:45, 1 May 2006 (UTC)
[[:Image:Unknown_SE_AZ_April_29_2006.jpg]]
to produce
Image:Unknown_SE_AZ_April_29_2006.jpg. Note the leading colon. Good luck with twenty questions!
Isopropyl
21:50, 1 May 2006 (UTC)Gotta use the image for something: Conopholis. Melchoir 06:43, 2 May 2006 (UTC)
Looks like it to me. Thank you! -- Bad carpet 16:17, 2 May 2006 (UTC)
Hi all. I'm trying to remember the name of a DOS - CGA computer game I played back somewhere around 1988 to 1992, I forget the exact name of it.
It was called something *like* Starflight I think, but I found that one on the underdogs, and it's not it. It was similar in that it was a space game. You had a crew of 5 (or is it 6?) on your ship, and you had skills such as tactics etc for each person to go up in. On occasion you would land on a planet and go inside a structure. Inside the structure you would see the action in front of you, but then overlaid on that would be a small HUD-type display with the walls and such in blue. Your 6 crewmembers would be behind you in blue circles on the HUD as well, and then unknowns would appear as red circles. You could get weapons like laser cutlass, some kind of mace, but also some projectile weapons. One of the worlds you landed on had (3?) large towers (like 500+ stories), which were all "populated", but you were only interested in one particular area of one of them. Anyways, that's most of what I can remember. If someone wants some more details, or has questions, post and I'll try to remember some more. Thanks in advance. Aaronw 22:50, 1 May 2006 (UTC)
on a digital cmara what is the Diffrence between the NTSC and the PAL video recording systems... is one better than the outher for taking videos?
I've heard some Christians and creationists claim that microevolution and macroevolution are separate and distinct from each other.They claim that all examples of observed evolution are of microevolution and that 'small changes do not imply large changes'.They also claim that there is a genetic barrier stopping organisms from evolving so far as to cross the species border.Are those claims true?
thx much
Sorry if this is a kind of stupid question. Is it really true that cockroaches have survived nuclear explosions? I've heard people joke that cockroaches will be the only things still around after we all nuke each other to death, but I was wondering if that was really true. I already checked the page on cockroaches and several pages about nuclear weapons, and didn't find this information anywhere. I did see that they could survive high levels of radiation, but would they survive the amount of radiation in a nuclear bomb?
Thank you!
I am vary competent in basic and decent at C programming languages. A fellow robot enthusiast had suggested I switch to PSOC programmable system for my robotic uses.. had any one else had any experiences with PSOC?? is it worth the switch?? SumoBotMaker 04:40, 2 May 2006 (UTC)
Hi all,
I'm looking for a good first-year-undergrad level chem textbook (or two, if it's impossible to get one that covers both organic and inorganic). My formal chemistry education goes up to A-level (about eight years ago), though I've done QM-of-the-hydrogen-atom what feels like a hundred times since. I'm looking to freshen up and slightly deepen my knowledge. Any recommendations? (Easily available in the UK is a bonus but not essential thanks to Amazon etc.) -- Bth 07:51, 2 May 2006 (UTC)
can anthrax be used as a bioweapon?
hello
i have a habit of chewing the skin near my nails.its like i cant think without chewing my skin.whats happening to me?
Does all chemical reaction need an activation energy? If nuclear reactions need an activitation energy, what's the activitation energy for nuclear fusion? I mean what activates the hydrogen to collide and create and helium?
Coloumbs law gives us force of attraction between two particles(charged).Does that include their masses as well? How about if a massless particle (gravitron)were subjected to this postulate?
I live in the UK and here the debate about nuclear power seems to have entered a new era, with many people who would normally consider themselves "green" warming to the idea of nuclear, I suppose as a lesser of two evils. Meanwhile renewbles seem ever more remote as a possibility.
I would be interested to hear personal viewpoints on this from around the world. To phrase it as a question: Can nuclear power save the planet?
Thanks to everyone who responded! I guess I was aware that I wasn't using the Desk as intended, but I couldn't help myself. Opinion-based questions seem to get extremely interesting and intelligent responses here (flattery will get you anywhere). Is there anywhere on Wikipedia where you can hold structured debates? I mean the articles tend to sketch both sides of an argument due to the NPOV policy without letting either side really vent, while Talk Pages tend to get hung up on details. Anyway, thanks again.
I'm wondering if anyone knows of any good software or games that focus on teaching evolution. Currently, the only title I know is SimLife. Anyone have any ideas? Thanks! — Asbestos | Talk (RFC) 16:07, 2 May 2006 (UTC)
If someone is in a boat in the 1500s & the wind is blowing WEST, how can they go EAST, assuming there is no current?? Obviously they were able to, otherwise one would be at the mercy of the wind when sailing. 199.201.168.100 16:35, 2 May 2006 (UTC)
BigFatDave 12:06, 3 May 2006 (UTC)
Hello, I have been trying to get the flowchart for the manufacture of DDT(Dichlorodiphenyltrichloroethane)for sometime now but i've not been successful.Can anyone please help me out.I will be very greatful if anyone can get the diagram for me. Thanks.
What are the names of the vitamins that play a significant role as coenzymes in the Krebs cycle?
How many Joules of energy would be procured by a wire 1 metre away from a single iron dipole in a magnetic iron lattice (not counting other atoms in lattice) at 20oC (293.83K)? Thanks *Max* 20:43, 2 May 2006 (UTC).
This isn't homework! 69.17.182.114 18:32, 3 May 2006 (UTC) (Max)
Acording to my Physics book all radioactive substances have a half life during which half of them decay. This means( according to my book) the substance should never decay entirly.
What happens then when 1/2 of the no. of atoms includes a decimal or is smaller than one? For example, 1,000,000,000 atoms with a half-life of 10 seconds. After 100 seconds this should decay to 975,562.5 atoms. Is this posible? If it continues (including Decimals) after 300 seconds (5 mins.) it will become 0.9313 atoms, Again is this Posible? I know an Atom can be broken into smaller particles but can it go like that?
Thanks.
Only in a general sense, that half-life is a bit of a simplifaction. You can't have a partially decayed atom; wither it's one element or another. -- Scienda 07:11, 3 May 2006 (UTC)
I was just wondering who discovered chlorine, and how it was discovered.
Signed, Joe
Would it be easier or more efficent for a plane to use a anamontronic wing-like aviation s ystem rather than using fixed wings? Would it be more fuel efficent if a giant plane were designed with big wings that moved similar to a giant hawk? And how would I go about getting a patent for this? Lord Westfall 22:32, 2 May 2006 (UTC)
I have a friend who wanted me to ask do those pills that claim to make your cock bigger actually work? My friend asked me, but I don't know what to tell him. So do those pills actually work? If so, which ones? My friend really wants to know. Lord Westfall 22:37, 2 May 2006 (UTC)
Wiki is pretty much anonymous anyway, so no point in the old "my friend was wondering" explanation...we don't know who you are so why bother? Loomis51 01:39, 5 May 2006 (UTC)
Staphylococci (including S. aureus and S. epidermidis) are known to migrate along medical devices such as plastic intravenous catheters. However, I believe they lack a flagellum, pilus, or other appendage for movement. Do they migrate along the catheter simply by dividing? Thank you very much.
Does anyone know what percentage of smokers actually develop some form of lung/throat/mouth cancer at some point in their lives? I'd be interested in seeing the statisics compared to the same kinds of cancer in non-smokers. I've had a look on the web but it's very difficult to wade through all the pro/anti-smoking propaganda. Anyone have a straight answer? Cheers. -- Kurt Shaped Box 23:48, 2 May 2006 (UTC)
I'm not convinced the 154,000 diagnosed is a worldwide figure; it looks more like a country figure. 57.66.51.165 08:00, 3 May 2006 (UTC)
Thanks guys - I appreciate it... :) -- Kurt Shaped Box 00:10, 4 May 2006 (UTC)
How come stun batons (tasers) make that clicking sound? — Keenan Pepper 23:52, 2 May 2006 (UTC)
i have read over the answers to the previous question regarding this topic and realised that it was a pretty straight forward example and would like to rephrase it to more smaller quantities:
Q: What is the simplest way to dilute 1M Hydrochloric acid down to just 250ml of 0.1M Hydrochloric acid? are there any specific calculations that need to be carried out?
thanks in advance!
This will probably seem less than mysterious to anyone with a vague knowledge of fish, but unfortunately there are lots and lots and lots and I don't know where to start looking, so... can anyone identify our little friend here so he can find some appropriate articles? Thanks :) Mystery fish (at the bottom) Yummifruitbat 02:24, 3 May 2006 (UTC)
How much of the following is true:
A man's penis tends to hang to one side. With this in mind, tailors ask clients "which side do you dress". The majority of men "dress to the left".
I can't find it on Wikipedia, nor on Snopes. If it (or part of it) is true, what factors would influence it?
Thanks! -- 84.51.154.196 02:31, 3 May 2006 (UTC)
I recently read an article by a doctor, in response to a question from a reader that his penis was oriented towards the left. The doctor had mentioned that most of the men have this feature. He even mentioned that the crotch of the trousers are stitched sligtly to the left side to accomodate this. But I have never had a tailor ask me this neither did I find any left orientation in the ready-made trousers -- Wikicheng 06:14, 3 May 2006 (UTC)
This goes back to the days when men's trousers were a lot closer fitting than they are today. The crutch of the trousers would come right up tight against the scrotum, which needed to be positioned on one side or the other to avoid it being uncomfortably divided, with one testicle hanging left and the other right. It was more a scrotum problem than a penis problem. The penis would obviously go whichever side the scrotum went. Some men preferred the left side, some the right. Tailors would never be so rude as to assume which side the gentleman preferred his dangly bits to hang, but would always ask which side they "dressed". For a tailor's regular customers, this information would be noted the first time, and would be used when making future trousers. I have certainly had this question asked of me. It happens far less these days, mainly because trousers generally have a different shape and the problem is avoided, but also because a lot of guys would consider this a ludicrous invasion of privacy, and no shop wants its staff exposed to charges of inappropriate questions (or even sexual harassment). How times have changed. JackofOz 06:58, 3 May 2006 (UTC)
So is there a WP article about this? There seems to be enough information. It would be interesting.-- Sonjaaa 13:34, 6 May 2006 (UTC)
What's the easiest way to identify the exact species of various trees I spot in Toronto? Do I need to buy a field guide, and if so which one is best suited for my needs? Do I need to take pictures of the leaves or analyze the bark, or is there some sort of DNA test I need to do to figure out the exact species?-- Sonjaaa 02:56, 3 May 2006 (UTC)
OK i ordered "Trees In Canada" by John Laird Farrar! :)--
Sonjaaa
13:00, 3 May 2006 (UTC)
Why electric field strength is greater than (force/charge)? thank you. s
I've learned in my Chem class that polar substances dissolve in polar solvents,eg NaOH dissolves in water.Non-polar substances do not dissove in polar solvents and vice-versa.Why does Ethanol(C2H5OH) dissolve in water? This is not a homework question.Just wondering. Thnx
Since solar flares are a threat to satellites are they not also a threat to fly-by-wire technology?
Incidentally, I just found a very interesting set of FAQs about aircraft safety here but the guy who runs it has just retired. -- Shantavira 08:08, 3 May 2006 (UTC)
Hello fellow Wikipedians! I've been helping edit the article at Wikipedia. I've seen it rise in google rank over time. It is now ranked four, but as you know many Wikipedia articles rank number one. Thus, I also want to know if there are other techniques specific for Wikipedia to improve ranking. FYI, I've done my own search in Wikipedia and read Search engine optimization and other related articles.
Another issue. The pagerank of Wikipedia's Opus Dei article is 6/10 when I use the pagerank at the google toolbar. However, I found out that the Unofficial Homepage which has a google search rank of number two has a page rank of 5/10. This means it has a lower pagerank than Wikipedia's Opus Dei but it is still higher in the google search. Why could it be so?
Looking forward to some great insights on this. Maraming salamat po (thank you in tagalog! Cabanes 09:26, 3 May 2006 (UTC)
Who was the first human to orbit the Earth? Thank You in Advance. -- Siddhant 10:36, 3 May 2006 (UTC)
Of course it would be Gagarin. Sorry I wasted your time by asking such a silly question. Anyway thanks for the answer. -- Siddhant 11:24, 3 May 2006 (UTC)
How can we protect workers who make PVC from the harmful effects of Vinyl chloride?
I've downloaded Chaosynth and its manual provides too little information about the physics of the sound and so. Can anyone recommend me an information source that speaks extensively about the subject? Thank you.
Which of the following statements is true?
A. Electrons are negatively charged and are found in the nucleus of an atom.
B. Electrons are negatively charged and are found outside the nucleus.
C. Neutrons are positively charged and are found in the nucleus.
D. Protons are positively charged and are found outside the nucleus.
In the Restriction of Hazardous Substances Directive page (2002/95/EC), paragraph 4 under "Details" states the maximum concentration of Hexavalent Chromium by weight of a homogeneous material is 0.1%. Where is that stated in the Directive? Thank you.
How exactly do you get the helicopter to pick you up in The Sims 2, when you need to get to work? Thanks, K ilo-Lima| (talk) 18:48, 3 May 2006 (UTC)
do st bernards and chihuahuas have the same size brain since they are the same species? Or does brain size relate to the size of the dog? thanks
carol
does any body know what are the latest coleman non radio active gas mantles made of and what would be the appropriate composition and formula for making a durable ,strong ,bright white light gas mantle(non radi active ) and has there been further develoment in this particular area and by whom.
Why no article on sequential times? 01:02:03 on 04/05/06, [6]?
WP offers a search bar with two buttons, Go and Search.
Firefox offers search engines but the WP one only ... searches. Does anyone know about a "Go" engine ? Thanks a lot. -- DLL 20:06, 3 May 2006 (UTC)
hey i need information on the Warren Truss bridge design, thnk you, matt
This is NOT the place for medical consulting, I know that, but this is of no importance, and not exactly a thing I'm gonna see a doc about. I just noticed that on my right eye, there was a bit of pink discolouration. So I look closer in the mirror, and it looks like some veins that have blown or something. Nothing big, just a tiny bit of pink (no intense red) that's not noticable for anyone not looking closely, focusing on it. What could this be? More importantly, what could it be caused by? Although it's hard to describe it, I can clearly see that there are some veins there, so it's not some sort of spot that's flooded with blood. Thanks in advance! 213.161.189.107 22:24, 3 May 2006 (UTC) Henning.
I like to feed the gulls (herring gulls, lesser and greater black-backs around here). I get together a big pile of scraps and leave it out in the garden for them and watch them feeding through the window.
Invariably, as soon as one of the flock of gulls I've attracted descends and picks up a piece of food, the rest of them immediately get angry and give chase to that single bird across the sky in an attempt to rob it of its meal - completely ignoring the fact that there is about 2lbs of meat/cheese/bread/etc. just sitting there on the ground.
Why are gulls seemingly more intent on expending time and energy to deprive another gull of food when by simply cooperating and putting aside their squabbles for five minutes, they would all be able to gather round and eat plentifully from the pile? This doesn't make sense to me at all (actually, it seems like a very human mindset). :)
Quite often, while the rest of the gulls are flapping, bickering and screeching in the sky above, a single bird will land at the food and quietly and calmly eat its fill then leave before the others have given up the fighting and noticed. Thus, the 'jealous' majority miss out. Do you think that this is a sign that this particular gull is more intelligent than the rest?
As someone else, somewhere online once put it - a gull's mindset seems to be "Everything that's mine is mine. Everything that isn't mine is also mine". :)
-- Kurt Shaped Box 00:38, 4 May 2006 (UTC)
Three thoughts:
1) Perhaps having "excess food" is so out of their normal experience that they don't know a different behaviour would be beneficial in such cases. That is, they are going strictly by instinct, which developed based on food being scarce.
2) The fighting over food may also be a way of establishing dominance, which may also come into play during mating.
3) They might want to avoid landing for fear of predators, like dogs.
StuRat 01:56, 4 May 2006 (UTC)
This was asked further up the page a few days ago but no-one replied. Is a 'normal' foreskin supposed to retract fully behind the head of the penis when it's erect? Thanks. -- 84.71.80.239 00:44, 4 May 2006 (UTC)
Is [7] generally reliable? More specifically, what are your takes on [8] and [9]? Black Carrot 01:16, 4 May 2006 (UTC)
== Do birds masturbate? == bbbbbbbbbbbbbbbbbbbb
This is not an attempt at vandalism, so pls don't revert my question. :)
My (male) macaw likes to rub his butt area against his toys and perches and seems to get really excited when he does this. He goes faster and faster, hooking his tail under whatever he's humping before he stops and sits there panting with his feathers fluffed up. It looks to me like he's getting himself off and cumming. Is he? Do birds really masturbate? Should I try to stop him doing it?
He probably is masturbating. Birds have no concept of 'sinful' or 'inappropriate' behaviour. It's a natural bodily function - I'd just let him get on with it. If you try and stop him (some bird owners squirt their pet in the face with cold water from a plant mister when they catch them wanking), he'll just get cranky and aggressive from the hormone buildup. -- Kurt Shaped Box 17:54, 4 May 2006 (UTC)
My daughter needs a source to interview for a report on kiwi birds. Any ideas of where to obtain a speciallized individual on kiwi birds? Dg2 02:54, 4 May 2006 (UTC) Thanks dg2
Is it Summer or Spring when the North Pole is tilted toward the sun. -- Jesusfreak 03:47, 4 May 2006 (UTC)
Thank you very much. -- Jesusfreak 03:47, 4 May 2006 (UTC)
What color is a nitrogen flame?
Hair has a lot of disulfide bonds (cystine I assume), and I assume it is liberated in the form of malodorous molecules, but is there a primary molecule or class of molecule (more specific than sulfides) that causes the stench? Sifaka talk 05:12, 4 May 2006 (UTC)
Is it possible to achieve zero gravity on earth?
Continuing from Jonathan, even when you jump off from a small height (say from the top of a table or a small ladder (basically when you are experiencing a free fall), you are in zero gravity -- Wikicheng 23:57, 4 May 2006 (UTC)
Can diesel be used in a high compression ratio jet engine so as to enhance safety in case of a crash as diesel does not catch fire due to sparks and spillage?
According to the formula e=mc², it is possible to get a lot of energy from a very small amount of mass. Practically, we lose of a lot of energy in every machine. If we burn a lot of coal, a huge amount of it is wasted as ashes. Even in nuclear power plants, a lot of radioactive material is wasted as nuclear waste. Is there any(practical/theoretical)way to convert the whole of a substance into energy without wasting much?
How can polymerization be used to make PVC soft without using plasticers? Thanks in advance.
Anything you add to the PVC could be construed as a plasticezer because you are taking away from the purity of the end product. The best way to do this is to create a plastic that is more amorphous (non-crystaline) which will make the plastic more of a tangled mess of molecules thrown together in a ball rather than an ordered crystal which is much more rigid. The best way to do this is to heat the plastic past its melting point until it is in a near liquid form with a lowered viscocity. Mix it well then super cool it. This will shorten the chains as you have broken some of the intermolecular forces of the original plastic and it will take away from the crystalinity. However once you do this it will severely degrade the plastic.
Hello, Is it possible to convert a pdf file (Adobe Reader 6.0) to a text format that I can edit. As it is currently Acrobat won't let me select anything to copy & paste it, when I try to save as text it saves a blank txt file & when I try to copy the file to the clipboard & paste it it doesn't paste anything. AllanHainey 09:47, 4 May 2006 (UTC)
You can use a software called PDF to Word v1.6 to convert PDF files into RTF format. RTF files can be edited normally with a text editing software(MS word for example). This software is not free. You can get it at http://www.verypdf.com/pdf2word/index.html. This is not an advertisement, you can use any other software if you like.-- DIGIwarez 10:06, 4 May 2006 (UTC)
Hi, what you need is a software that can read image from pdf and save as text. Here is one OCR software Image to OCR Converter It converts image-only, searchable pdf and copy restricted pdf to text-only pdf. There are many ocr software available like the one GOCR mentioned above, but these OCR generally create searchable pdf but not a text-only pdf. I assume that you understand the difference between an image-only pdf, searchable pdf and text-only pdf. Please read: http://products.softsolutionslimited.com/img2ocr/help.htm#pdf_types here the questioner is asking for a pdf format that can be converted to any text based format or can allow copy paste of characters which in this case is only possible if he knows the password of pdf or if he converts it to a text-only pdf. Only text-only pdf can be converted to text based formats like word, doc, html etc. while searchable pdf and image-only pdf will only give you images. Searchable pdf lies somewhere in-between image-only and text-only pdf. So you can use text-only pdf of this software to use it as you like. Let me know if there is any other software that can convert image-only pdf to text-only pdf and not to searchable pdf which is of no use when performing copy/paste or pdf format conversion. I have used almost all available ocr and pdf to doc converters and this problem is quite frequent. Also, in regard to the solution posted by DIGIwarez, every pdf to word, doc converter may not be an ocr / text recognition software. You have to read spec of software or use the software to find it. Here idea is to convert images to text and as well as preserve to layout / text structure of pdf.
If β-particles are negatively charged, how can they stay inside the nucleus?
I think what you are trying to ask is how protons can stay in the nucleus together despite their mutual electrical repulsion due to their positive charges. The answer is that the nuclear force is a stronger attraction than their electrical repulsion, at that distance. StuRat 18:17, 4 May 2006 (UTC)
i recently heard that dieting DOES NOT reduce the amount of body fat.Then why do people recommend & follow it?
See http://home.howstuffworks.com/diet.htm for an excellent article on dieting -- Wikicheng 00:12, 5 May 2006 (UTC)
why does sugar mix well in hot milk than cold milk?
thanks!
Simple Answer: Milk is made of molecules that whizz around, bumping into each other. Sugar is also made up of molecules, but they are 'holding on' to each other, making them solid instead of liquid like the milk. When a milk molecule hits a sugar molecule, if it's going fast enough and strongly enough it will break the sugar molecule off the lump of sugar and dissolve it in the milk. The warmer the milk is, the faster the milk molecules whizz, and the harder they hit the sugar molecules. Also, as they are moving faster, they hit the sugar molecules more often. This means they break sugar molecules off more often, dissolving the little lumps of sugar faster. Skittle 16:01, 5 May 2006 (UTC)
Hi again, a U.K. committee set up by the government to look into the best ways to dispose of nuclear waste/materials recently reported the best way would be to bury it deep underground. That got me thinking - what would happen to it if we got it into magma, like a volcano, but instead of just tipping it in Mt Etna we dug down & put it into a deep underground magma flow? Would it burn up, at least partially, solidify underground in the rock, shoot right back up & create a radioactive volcano where we dug or just turn the lava radioactive creating radioactive rocks/volcano lava sometime in the future? Also would it be possible to do this given the pressure/temperatures involved? AllanHainey 12:47, 4 May 2006 (UTC)
Why does a black car absorb more heat than a white car when it becomes exposed to sunlight? Patchouli 14:08, 4 May 2006 (UTC)
So we see the reflected color, and thus for a black object no light is reflected. Also, we don't see IR and UV light because they don't get reflected.
Patchouli
17:45, 4 May 2006 (UTC)
Bees for instance can see the ultraviolet patterns on many flowers; you and I can not. -- Scienda 18:40, 4 May 2006 (UTC)
Einstein says that it's impossible to go at the speed of light, because the closer you get to the speed of light, you become heavier, time goes slower, and you get flatter.
But Einstein also said that speed is relative. You can't measure your speed unless you compare it to something else. When you're going 100 km/hr on the highway, what's really happening is your car is moving 100 km/kr relative to the Earth. When you calculate that the Earth is moving 1500 km/hr when it rotates, what's really happening is the Earth is rotating 1500 km/hr relative to the Sun.
So how can you say that you're approaching the speed of light if speed is relative? Jonathan talk 15:20, 4 May 2006 (UTC)
contradiction. – b_jonas 12:21, 6 May 2006 (UTC)
-User: Nightvid(unregistered)
Oh, I get it now! Thanks. Jonathan talk 14:47, 8 May 2006 (UTC)
Give an example of a mechanical collision in which energy gets dissipated even in ideal circumstances, that is, where energy dissipation is unavoidable due to the law of conservation of momentum. — Masatran 15:26, 4 May 2006 (UTC)
Isn't the molecular formula for the ionic compound aluminium fluoride Al3+(F-)3? I done it in chemistry today and it apparently was correct. However, according to the PubChem article, [13], it is simply AlF3. Which is correct, mine or theirs? Thanks, K ilo-Lima| (talk) 16:45, 4 May 2006 (UTC)
What is the name of the microscopic organism that looks like a tube, and moves by bending forward, placing its head(?) down, and bringing its feet(?) up; that is, it is upside-down(?) at every alternate step? — Masatran 18:00, 4 May 2006 (UTC)
Kinda like this?
___/ _____ _______ _____ \____ / / \ \
A physics teacher told me about it. I don't know what it is, but it works because of the order the segments move in. If you thought about it in terms of physics without considering the solution it is in, it would seem like the creature would get nowhere, however it works becuase the fluid at this scale is very viscous. Whenever it makes a stroke, it either has the other segment streamline or out. When it makes a forward stroke, the other segment is stream line, whenever it makes a backward stroke, the other segment is down and provides drag which limits the amount of backwards motion. Looking at the picture above, it starts in the s shape. The stroke with the front segment pushes the creature backward a little, but the other segment is down limiting its backward motion. The next stroke pushes it forward, and since the creature is streamlined compred to where it was in the first position it has moved a little ahead. And no I don't know what it is called. I wish I could help more... Sifaka talk 04:18, 5 May 2006 (UTC)
I have three places for my headphones to plug into the computer: one on my DVD drive, CD drive and another near the bottom of the computer, where a bit of the computer "lifts up" and there are USB ports there, too. The only place I can plug the headphones into and hear sound is from the one in the bottom. When I plug it into the DVD or CD part, near the drive, no sound comes out of the headphones. Why is this? And can I route it to the CD drive? Thanks, K ilo-Lima| (talk) 18:38, 4 May 2006 (UTC)
Which is more likely scientifically? Making contact with a Roger Federer serve or a Roger Clemmons pitch?
I've frequently heard that women are, in general, more suceptible to cold than men. (That is, to feeling cold, not to freezing to death.) Is this true? If so, what are the reasons for it. Thanks. -- SCZenz 19:02, 4 May 2006 (UTC)
I believe this is a simple surface area to volume ratio effect. That is, smaller objects lose their heat more rapidly than large objects. Women are typically smaller than men. Children and babies are even more susceptible to the cold, although their higher metabolic rate may compensate to some degrees. StuRat 23:29, 4 May 2006 (UTC)
I cant explain it, but my (male) hands are always warm, whereas girls hands i touch/hold are nearly always cold. am I alone in thinking this? -- Ballchef 23:50, 4 May 2006 (UTC)
Limiting blood flow to the extremities to preserve core body heat is not unique to women, men do this, too. However, if women are more often cold, due to their higher surface area to volume ratio, then this protection mechanism will be activated more often in them. Note that this shows they really are colder, it's not just a psychosomatic issue. StuRat 16:27, 5 May 2006 (UTC)
Another factor may be fat distribution. Slim men tend to have a rather even distribution of fat, while thin women tend to have fat concentrations in their breasts and butt. And, of course, evenly distributed fat provides for better thermal insulation. StuRat 16:34, 5 May 2006 (UTC)
Which is more correct 'Distillation is a method of separation of substances based on differences in their boiling points.' or ' Distillation is a method of separation of substances based on differences in their vapor pressures.' -- ∞ Dbroadwell 19:52, 4 May 2006 (UTC)
I've made a bunch of redlinks to braking rocket; there's already an article on retrorockets. I tend to gather that a "braking rocket" is fired during reentry and landing to oppose gravity and slow the fall, while a "retrorocket" is fired in orbit to lose angular momentum and allow a landing in the first place.
Is this accurate? Is there really a distinction in terminology and/or design between the two purposes, or am I just confused? Melchoir 20:24, 4 May 2006 (UTC)
I see. Thanks! Melchoir 00:41, 5 May 2006 (UTC)
Howdy! Why is it that immediately after coming indoors after spending some time in bright sunlight, everything appears to have a fairly strong green tint to it, that disappears after 30-60 seconds? Is there a fairly humdrum reason, or could it be something to do with the multiple ophthalmic surgeries I had as a child to correct fairly strong strabismus (two on the right, one on the left)? GeeJo (t)⁄ (c) • 20:25, 4 May 2006 (UTC)
Another thought, are you wearing greenish tinted sunglasses when outside ? If so, those would block the green light and make everything appear less green. When you remove them, everything would then appear more green by comparison, until you got used to it. StuRat 23:15, 4 May 2006 (UTC)
It's not your brain that adjusts, it's the cells in your retina. -- Username132 ( talk) 20:14, 5 May 2006 (UTC)
Geejo, I'm going to tack a rider onto your question, because I have a question about tinting as well. Speaking of glass tint (someone brought it up! someone brought it up!), y'know that strip of blue...uh...stuff?...that's at the top of most windshields? What is that for? What's it called? It doesn't seem to do anything for glare...the windshield article doesn't mention it at all. Cernen Xanthine Katrena 14:12, 7 May 2006 (UTC)
Outside my window in Charleston, SC, I see hawks circling a lot. They are rather large. The weird thing is that they are often chased and pecked at (in mid-air) by tiny black birds. The tiny black birds will pester the large hawks for a very long time. It makes no sense to me because the hawk is more than large enough to kill the tiny black birds with a single swipe of a talon. So, I wonder what kind of birds these little things are and why the hawks deal with them so patiently. Anyone have a guess? -- Kainaw (talk) 20:26, 4 May 2006 (UTC)
Do all chemical reactions recquire activation energy, or are there some that have none, and will decompose almost instantaneousley in normal conditions (or even extremely low temperature) lfor example possibly something like NeCa4 or NeC2, involving noble gases (I can't imagine those compunds are to hard to pull apart). If not, what is the bond with the lowest activation/bond energy. Thank you Philc T+ C 20:56, 4 May 2006 (UTC)
I've heard badgers are the species which have sex for the longest time, can anyone verify/specify? Thanks in advance!
Please God, in my next life, let me be a mink! Loomis51 02:14, 7 May 2006 (UTC)
Photon says "electromagnetic interaction is mediated by the exchange of virtual photons." Does that mean that there are constantly virtual photons exchanged between every pair of charged particles in the universe? If so, that is a lot of photons, and they last a long time. Bubba73 (talk), 23:10, 4 May 2006 (UTC)
In Australia, we have a current affairs "news" show called Today Tonight. now, this show is notorious for bullshit, but i wanted to know more about it's report on salmonella. they reckon around 70% of cooked chicken availiable here has salmonella. This would infer that around %70 of australian chicken eaters would get salmonella related diseases right? of course I've never come across any thing worth believing that says our chicken is unsafe. The explanation given on Today Tonight is that our immune system will fight the salmonella, but if we keep eating the chicken eventually our system will give up. I always thought that if we fought something once sucessfully, we would become immune to it! The story focussed on a bloke who is now in a wheelchair because he ate too much chicken, but i thought salmonella just made you quite ill. I read the wikipedia article on salmonella which says "In March 2006, The New York Times reported that the US government said that 16.3% of all chickens were contaminated with salmonella". and i havent heard of huge worries in the states either.
Thanks -- Ballchef 23:51, 4 May 2006 (UTC)
You always assume that the raw chicken is covered with nasty buggers, salmonella being very common. That is why the official 'cooked' temperature is much higher than beef. Well-cooked chicken has no bugs, and always use a neato very geeky electronic thermometer that beeps at you! -- Zeizmic 02:16, 5 May 2006 (UTC)
My house lays just under the approach path of a major international airport. Watching the majestic 747-400s flying over my house on their final approach is a daily pass-time of mine. I just wonder: what is their airspeed at 500ft of altitude?-- JLdesAlpins 00:24, 5 May 2006 (UTC)
An Hollywood's favorite: a guy shoots at a lock with a pistol and the lock shatters. Would a good quality lock break apart by being shot at in real life?-- JLdesAlpins 00:30, 5 May 2006 (UTC)
I'm sure this information is available on some wiki site(s), but I've tried, and I'm finding it difficult to find the precise site(s) to look for.
I would like to find out the top 10 Oil producing countries, in terms of barrels of oil per day produced, as well as the top 10 countries according to their potential production, i.e. the top 10 countries with the highest amount of petroleum reserves whether exploited or not, within their territories.
Some other pieces of information I'd be interested in would be:
1) At the current rate of consumption, approximately how long would it take to completely exhaust oil reserves (i.e. there'd be nothing left to pump) in such oil rich states as Saudi Arabia, Iraq and Iran in particular, and other states in the Middle East in general;
2) The degree to which Canada exploits its oil reserves, in relation to the degree to which these Middle Eastern countries exploit their oil reserves. (For example, if Saudi Arabia has 100x in oil reserves, and produces 1x per year, it's exploiting 1% of its oil reserves per year). What percentage of Canada's oil reserves are exploited each year? Thanks for the help. Loomis51 01:16, 5 May 2006 (UTC)
-- Mac Davis ⌇☢ ญƛ. 04:25, 5 May 2006 (UTC)
Thanks to all of you, the subject is obviously even more complex than I had originally thought. Loomis51 01:00, 6 May 2006 (UTC)
Can anyone tell me what causes metabolic acidosis in burn victims? Is it caused by the loss of bicarbonate during third spacing? Is it caused by inhalation poisoning such as cyanide? Or is it caused by hypermetabolism? What is the doctor looking for when he/she orders an immediate Arterial Blood Gas in trauma/emerg? What is he/she monitoring for when he/she orders ABGs later on in ICU or acute care? Thank you for your time! Student nurse in a current heated discussion with fellow student nurse.
I understand acidosis and how it happens but not in the pathophysiology related to thermal burns.
we have seen each law has some or other exxeptions or failure so is there any thing in this world that does not follow 2nd law of thermodynamics. If any body elaborate on this i will be very thank full
sujay
only to an isolated system (i.e., one that exchanges neither mass nor energy with its surroundings). It is my understanding that the law is true without exceptions within that context. All examples given above (statistical collisions of molecules and local decrease in entropy) assume exchanges of mass or energy, so they are not examples of the application of the law, nor do they provide 'exceptions'. -- Michel M Verstraete 20:44, 12 May 2006 (UTC)
Today, I accidentally got half a drop of super glue on my thumb and index finger, but fortunately pulled the fingers apart before the glue dried. I have the bad habit of biting pieces of skin off my fingers and then swallowing them, so that's what I did to the fingers which had a layer of dried glue on them.
I think I ate around 0.02 mL of Instant Krazy Glue. After biting my fingers, I noticed this message on the glue container: "If swallowed, contact a Poison Control Centre or doctor immediately. Do not induce vomiting." I have two questions:
Thanks everyone! -- Bowlhover 02:36, 6 May 2006 (UTC)
what is lga stands for in pentium IV 2,66lga ???
For all of the materials we now know about, do all of them have some degree of 'bendy-ness'? (bendability?)
If we have a diamond a mile long, could we measure the amount we could bend it and the force needed to do so? -- Kickstart70- T- C 06:18, 5 May 2006 (UTC)
Thanks to both of you, much appreciated! -- Kickstart70- T- C 16:33, 5 May 2006 (UTC)
Perfect rigidity is a violation of special relativity. It is no more possible to have perfectly rigid body than it is to travel faster than light. Therefore, yes, all materials are bendy. - lethe talk + 01:46, 6 May 2006 (UTC)
Does anybody know the best technique used to making a car from a mouse trap? there are heaps of websites on this topic but all are just trying to sell mouse trap car kits. so if anyone knows how to make one or if they know any good websites it would be very much apprecaited.
Thank you
hello may i know the definition of internet and world wide web and their uses
thank you
If my girlfriend and I had unprotected sex on the evening of March 6th/morning of March 7th, and her cycle started March 4th and apparently ended March 6th, is it possible that the aforementioned unprotected sex resulted in conception?
-Thanks, Jared
the above is completely correct but see to it that the next time you hav sex with your girlfrnd use a condomn and then enjoy it the better way.-priyanka
what happens if one travels at the speed of light? I know its impossible but i want to know
I would like to know how lighting fittings are manufactured. The process involved from sourcing the materials used to the final product. i would be grateful if the information could be broken down to specific lighting fittings. Also the what are the references of regular bulbs to low energy ones.
Why cant a plane mirror and a highly polished white surface produce reflection of the same kind?
Last night (may 4th), I was in a play. Right before I heard my cue line I was feeling really nervous. I also had some "butterflys" in my stomach. What I was wondering was what are these called (the butterflys) and why do they feel like that. I already looked at the article anxiety but to no avail. I was just curious. THanks. schyler 11:53, 5 May 2006 (UTC)
While I also learned a new word, it didn't really answer my real question. What is the name for the butterflys, not the name that butterflys is a symptom of. Thanks though. schyler 12:16, 5 May 2006 (UTC)
Since I was dissed, I have to go back to the original question. I looked up stage fright and that led me to that fancy name. I always thought that butterflys (ies?) was the only symptom. What we have found out is that there is no Latin name for 'butterflys' alone, except 'weird reaction by your second brain - itis'. (Geez, I feel like ol' Noti!) -- Zeizmic 17:35, 5 May 2006 (UTC)
English not providing you with all the features you need? Don't dispair make it up. If you want a pseudo-Latinate word for that squirty feeling, try combining some of these funky elements:
lepidopter- : butterflies, moths duoden-, abdomino-, ventro-, ileum : various gutty bits
Unfortunately most of these are suffixes but I quite like ventrolepidopter and I would tell people about them if I did not have them. Bonus word of the day borborygamiphobia, fear that someone will hear your stomach rumbling. MeltBanana 16:05, 6 May 2006 (UTC)
I heard a nuclear bomb has an energy efficiency of about 3%. Would this be increased if we divided the bomb's mass over on ten (or hundred) smaller, identical bombs, and set them off so that the blast waves were in phase upon hitting the target? For some reason I don't think that's what energy efficiency truly means, so does anyone have a better word for what is actually increasing? Scientifically correct, that is. "Blast effect" sounds a bit too... Star Trekish, but if that's the word, I'll go along with it. I just need to use correct terms. Thanks! 213.161.189.107 13:31, 5 May 2006 (UTC) Hen
If polycarbonate is not dried before it is extruded, will the mechanical properties such as impact strength be degraded as it goes through the extrusion process. If so how large is this effect and would it be more cost effective to dry the material and extrude it or just extrude it without drying.
The computers at my school (OS 9 iMacs) have all their internet traffic filtered at the server, so I need a method to bypass the filters? Basically, what I think I need is a proxy that does data encryption. Any suggestions?-- Frenchman113 on wheels! 18:52, 5 May 2006 (UTC)
I need to get a water flow of 100 liters/minute through a 12.5 mm nozzle. I will be pumping this from a 200 gallon tank at floor height through a short length of standard garden hose and out through the nozzle. I must pump this volume for a period of three minutes. I am trying to figure out what to use as a pump. I tried a standard sump pump that advertised a flow rate of 8600 gallons per hour but found my flow rate out the nozzle well short of the requirement I must meet. Do you have any suggestions? -- 12.19.235.34 18:58, 5 May 2006 (UTC)
When you're moving current no matter if its water or electricity, if you squeeze a large amount of it together then open it up in the direction it is going,it boosts the current. If you use a wider hose than a standard garden hose, more water will be putting pressure on your nozzle. This will increase the water pressure that is exiting your nozzle because the water has more space to move. Think of it as popping a paper bag. When you fill the bag with air it all wants out because there is too much pressure so it blows a hole in the bag. Your nozzle will act like the hole and release all the pressure. If that doesn't work you might need to consider a bigger nozzle.
I'm pretty sure you are talking fire-hose volumes here. Your sump pump could only do 2 gal/m or 8 L/m. City pressure at 40 psi might only get 12 L/m through a standard hose. You want another order of magnitude more than that. -- Zeizmic 20:37, 5 May 2006 (UTC)
Pump are designed to deliver either a large volume of water at low pressure, a small volume of water at high pressure or some trade-off in between. When you purchase a pump it will often have a small table listing how many gallons per minute it will deliver at a certain pressure. You can estimate the pressure required at the nozzle to give you the required flow rate using the firefighters formula: gallons per minute = 29.7 x diameter in inches squared x square root of the pressure in pounds per square inch.
So you need around 14psi at the nozzle to flow 26.4gpm. That is if you are using a tapered smooth bore nozzle--if you are pumping directly out of a 1/2in pipe the pressure required will be slightly higher. You also need to take into account your "short length of standard garden hose". Trying to move 26.4gpm through a full 3/4in inside diameter hose you will have about 60psi friction loss per 100 feet of length [18]. Standard 3/4in or 5/8in garden hose will be even worse. You will need a pretty large centrifugal pump to push that amount of water through any length of small diameter hose like that. (Forgive all the non-metric units, i'm too lazy to convert them.) EricR 01:18, 6 May 2006 (UTC)
I was wondering how it could be that a pole in the ground serves to conduct electricity to 'earth'. I mean, the concrete or soil or whatever it is that the pole is inserted into, isn't going to be electrically conductive is it? If I rectified mains electricity, and connected the negative terminal to a pole in concrete, wouldn't the pole just fill with enough electrons to eventually stop the current? -- Username132 ( talk) 19:49, 5 May 2006 (UTC)
How possible would it be to have wikipedia on a DVD-RW that was able to update itself when put into a DVD-RW drive on a computer with internet access? How long would it take to make such a thing happen if you knew how to program? When can I expect to see self-updating Wikipedia on DVD-RW? -- Username132 ( talk) 20:31, 5 May 2006 (UTC)
What is the name of the space-time theory where all three time-periods (Past, Present, and Future) are all occuring at the same time? That is to say, as I sit typing this, I also sit thinking it up, and sit drinking my coke after submitting. Thanks! Here7ic 20:41, 5 May 2006 (UTC)
This is probably a very simple question, but it occurred to me while doing some reading today. We know that one can remove the nucleus from one cell and replace the nucleus in another cell ( somatic cell nuclear transfer) and it will (if you are lucky) develop normally. Does this work if the two cells are from different species? I imagine it would not work between animals and plants since their cells contain different organelles, but what about animals with high degrees of relatedness (i.e. a chimpanzee and a human)? Has anything like this been attempted (I assume not with humans, of course, but dog/wolf wouldn't surprise me if it had)? If not, should it work? -- Fastfission 22:36, 5 May 2006 (UTC)
Are there such things as yellow ants? Sort of translucent like honey? -- HappyCamper 22:40, 5 May 2006 (UTC)
Though it seems to happen often enough in movies and is commonly used as an expression, is it plausible that a large segment of the human population would react to extreme fear by experiencing incontinence (either fecal or urinary). My understanding is that strong anxiety makes it dificult to urinate, so if anything, people who are scared should find it near impossible to urinate, and not the other way around (I assume the same rules apply to defecation). To be blunt, which is the more plausible outcome, being "scared shitless", or "shitting your pants"? -- Aram գուտանգ 03:46, 6 May 2006 (UTC)
I'm guessing the defecation and urination fear response is a protection mechanism against predators. That is, once you do that, you no longer smell like food to the predator, so it might let you go. Our instincts might be sufficiently vague that any extreme fear causes this, however, not just predators. I recall a nice pick of a bungee jumper with an impressive brown streak up the back of his shirt (he was upside down, of course, when this happened). StuRat 22:01, 6 May 2006 (UTC)
Well, the losing weight and predator repulsion explanations make sense, but what I'm really wondering about is whether people actually piss/shit their pants when they're scared in real life. Since paruresis is caused by anxiety, it doesn't matter if it's anxiety caused by fear, or performance anxiety. Are there any documented cases of people experiencing incontinence when scared, where fear is the only cause for it, i.e. they haven't been holding it in for a long time, or they haven't found themselves suddenly to be in freefall. Also, is there a term for it that's better than "fear-induced incontinence", because this is a difficult subject to search for without key terms. -- Aram գուտանգ 00:45, 7 May 2006 (UTC)
I can assert, through personal experience, that a person in imminent danger of drowning (surely, a situation involving real fear) can defecate involuntarily. It happened to my daughter, then 13, before I and my brother-in-law rescued her. G N Frykman 17:43, 8 May 2006 (UTC)
I remember reading something that said something along the lines of when your body is experiencing extreme (performance, assumedly) anxiety, it does not want to bother with many less-important processes such as digestion, and so it simply voids the body so it can focus on immediate survival. Sounds very plausible to me. -- T. S. Rice 03:28, 13 May 2006 (UTC)
The 3 wires that run to my house from the power lines are two hot and one neutral wire. The ground wires in my home electrical system are connected literaly to the earth via a ground rod which runs a certain number of feet into the ground. My questions refers to the neutral wire. When I plug a lamp into an outlet, the AC voltage moves back and forth 60 times per second, and electrons flow back and forth through my lightbulb giving up their energy as light and heat, and in turn this voltage is running through the neutral wire as well - does it run all the way back to the power station? Is it connected to a huge ground rod? Why can't I just use my ground as a 'neutral' wire? Aren't some neutral wires actually attached to the ground buss in the panel? (Not in Canada)
If anyone can help me understand this, I'd appreciate it.
CW
60.241.30.237 06:44, 6 May 2006 (UTC)
I've seen a few books and web sites out there that say that the humans cannot absorb more than 10 grams per hour of fat from the GI tract. Where does this come from, and what type of experiment (if any) was done to determine this? Experiments which I have undertaken on myself seem to suggest otherwise. -User: Nightvid(unregistered)
I yawn, my parrot yawns. My parrot yawns, I yawn. I see a dog in the street yawning, I yawn. I yawn near my mother's cat, my mother's cat yawns.
etc.
Why can a yawn be transferred from species to species like this? I've read the yawn article and it mentions that it can be 'interspecific' in it's contagion but it doesn't explain why. Anyone know? Thanks.
There was an episode of
Mythbusters about yawn contagion.--
Sonjaaa
13:51, 6 May 2006 (UTC)
The consensus among people whos study this stuff seems to be that yawning really is contagious. A reasonable explanation, it seems to me, would be mirror neurons, neurons that respond to behaviors observed in others by performing exactly the same. (This explains why you wince also when another person steps on a thumbtack. However, the first Google result for "yawning contagoius" claims that a 2005 study using fMRIs found that the mirror neuron system was inactive when viewing videos of other people yawning. That would seem to indicate that some other system is at work, though probably still one that does depend on some degree of social and self-awareness as humans and chimps are the only species believed to exhibit contagoius yawning. If you want a slightly longer answer without having to wade through the scientific articles, you might want see this guy's blog. BTW, the result of that Mythbusters segment was "CONFIRMED," if you were wondering. - Wiccan Quagga 05:09, 7 May 2006 (UTC)
Well, this may be a stupid question, but as the saying goes... How is it that animals who produce toxins are typically immune to them? I understand how, from an evolutionary POV, it's obviously beneficial for an animal not to be susceptible to its own species' toxins, but I was wondering how this is typically accomplished. How are scorpions who secrete neurotoxins not affected by them, for example? Do they have substances in their blood which break down the specific neurotoxin they use before it can harm them, or do they actually have a biological makeup which renders the neurotoxin ineffective? Are all animals who are broadly venomous to other species immune to their own toxins? 82.92.119.11 09:29, 6 May 2006 (UTC)
Supposing you had to off a someone who happened to be an insulin-dependant diabetic, preferably without getting caught. What if you were able to remove the insulin from one bottle and replace it with a glucose solution, put the spare bottle in the microwave and then replaced them both where you found them. How long would it take for the glucose to have its effect, and would it be fully lethal? Obviously you'd need to dispose of the glucose-containing bottle, wash out the syringe, maybe take up some denatured insulin into the syringe and perhaps wipe the point of injection with some damp cottonwool to remove and traces of glucose. What would be left for forensics? They'd check his blood sugar and it'd be through the roof... would this look suspicious? How about if the glucose solution also contained some alcohol... would they check stomach contents? -- Username132 ( talk) 11:14, 6 May 2006 (UTC)
I would like to know the effect of connecting the wrong phasing power supply to the UPS in the telecommunication base station. Explaination with diagram would be very helpful. Thank you
I think his question was about wrong phase sequence. That is, what happens if one connects RBY to terminals marked RYB (R-R,B-Y,Y-B instead of R-R,B-B,Y-Y) of an UPS (doesn't matter were the UPS is used) -- Wikicheng 08:42, 8 May 2006 (UTC)
Yes, Wikicheng is correct-what is the effect if the supply connected to the UPS is in the wrong phase sequence RBY instead of RYB.
Would it be correct to say (as a general conclusion for relationships among correlations/ Pearson correlation) that if X is related to Y and Y is related do Z, that this necessarily means that X is related to Z? -- 4.155.249.93 17:04, 6 May 2006 (UTC)
I would be interested in a recap or summary of the latest communications technology that includes such devices as the internet, telephone linkages, digital photography etc., and what these actually do in the real world. Thank you
Obviously, we all know that solutions to Schrodinger's equation is called wave functions. In convention, we call "a one-electron wave-function" a orbital. NOW, if orbital is essentially a mathematical description of the behavior of one electron, then why on every orbital we can have 2 electron filled up?
Thanks
I am curious about this. My guess is that they do. But it may depend, which is why I am asking. Thank you-- Ķĩřβȳ Ťįɱé Ø 18:40, 6 May 2006 (UTC)
A 5500kg helicopter accelerates upward at 0.50m/s² while lifting a 1200kg car. What is the lift force exerted by the air on the rotors? What is the tension in the cable that connects the car to the helicopter?
I drew my free body diagram and this is what I got for the two equations:
Helicopter
ΣFy = ma FA - FG1 - T2 = m1a
Car
ΣFy = ma T1 - FG2 = m2a
FG1 being 9.81 x 5500, T2 being 0.5x 1200, T1 being 0.5 x 5500, FG2 being 0.5 x 1200
My problems lies here. I need something to cancel out so I can solve for FA or T, but nothing cancels out. T1 and FA are the same the force, and so are FG2 and T2, and I've tried going FA - FG (total) = m1a and FA - FG2 = m2a but I that didn't give me the right answer either. I think my problem may lie in the fact that I have acceleration as FA. I've noticed that in some questions that we have done that acceleration is sometimes FA, and sometimes isn't included at all on that side of the equation. Anyone know why? Now as I think about it I don't even know why I have a T1 and T2 and not just T... I am really unsure here. Thanks. C-c-c-c 19:34, 6 May 2006 (UTC)
Okay, problem seems to be firstly that you've got these two different tensions, and then made some unfounded assumptions about what they should be equal to. Just set them both to T, and then solve for FA by adding the two equations:
FA - FG1 - FG2 = m1a + m2a
or as I'd prefer to write it,
FA = (m1 + m2)(a + g)
That gives you FA, which (no surprises) is enough to counteract gravity and provide the upward acceleration, for the combination of helicopter plus car.
Also you have
T = m2 (a + g)
In fact it's an important result that an upward acceleration and a gravitational field have an equivalent effect, so the a+g in the answers is no surprise.
I'll leave you to put the numbers in.
Arbitrary username 20:43, 6 May 2006 (UTC)
My question: when did we start "knowing" that the stars in the night skys are actually very distant stars? The star article itself is severely lacking in the cultural and historical prospect... Anyway after a bit of searching now I know there was this Nicholas of Cusa who proposed that stars are suns, though obviously he would not be able to "prove" his claim. However nowadays everyone regards this idea as a fact. So when and how people "prove" that stars are in fact suns very far away but not lamps embedded on the celestial sphere? Thanks! -- Lorenzarius 19:48, 6 May 2006 (UTC)
Is it considered a fact that the majority of trees over 30yrs of age produce more carbon dioxide than oxygen? 60.226.90.64 22:05, 6 May 2006 (UTC) JAG.
The article "Breath" says that we inhale and exhale the same amounts of Nitrogen, about 78%. Obviously, at least to me, we're not absorbing it. Does this demand a natural defense mechanism, or is it rather the lack of anything for the nitrogen to bond to? (Mixed answers are thus fairly acceptable) THANKS! This is such an amazing resource, and that's just the articles on their own.
What is the difference in time during the existance of the universe as we know it today and since the Big Bang and anytime prior to the Big Bang? -- PCE 00:22, 7 May 2006 (UTC)
When a new celestial object is discovered, it is immediately given a specific name (at least in English...its name in other languages may be different). I understand that our planets have been named after Roman gods, but this goes back to antiquity. I also understand that certain planets' moons are named according to a theme, for example (forgive me for forgetting which one) one planet's moons are named after Shakespearian characters. But that is also an old tradition. (Also, it seems pretty anglo-centric...are those moons named differently in different languages? For example in Russian are they named after characters created by Russian authors?).
What I'm really getting at though is, say a comet is discovered, or a new extra-solar planet. What organization or body is it that seems to have the authority to define these objects' names? Loomis51 02:04, 7 May 2006 (UTC)
This is for Americans. Does anybody know what anti-counterfeiting purpose it serves to make our money pink? Black Carrot 02:57, 7 May 2006 (UTC)
well, why not pink? who says green is the definitive colour for money? surely you don't think that people might think your gay if you pay with pink money, do you? that would just be tragic!
(this comment was added by someone who doesn't know how to sign their own name)
Does anybody know the technical term for the "red-eye" effect in photography? I thought that it began with "hemo-", but I might be totally wrong. Please, please, please, if anybody knows, I'd greatly appreciate it. (I doubt that I'll be able to sleep until I find out!)
Many evolutionary scientists have criticized and refuted the arguments given for Intelligent Design.Well, how have Michael Behe,William Bemski, and other advocates of Intelligent Design reponded to these criticisms?
How the Indian Almond look like? Is it called 'chinabadam' in Bengali language?
does sugar have a refractive index?
Is there an existing material that can travel faster than light?Does wikipedia have an article on it?i would love to check it out
--thanks
This means that perhaps in the future the topic could lead to faster than light communications/information transport for teleportation. Turtleboyxtreme i do not know when.
i know that human eyes cannot detect UV rays.but is it possible to have any sorta eye surgery so that our eyes can spot UV rays without any damages?
Remember that UV radiation carries a lot of energy per photon; in fact, enough to be damaging to living tissues. Life as we know it today, above the ocean or soil surface, would not be possible without the ozone layer in the stratosphere that absorbs much of the UV coming from the Sun. By and large, there is relatively limited exposure to UV at sea level (just enough to tan...), but exposure does increase either with altitude or in regions located in the so-called ozone layer. -- Michel M Verstraete 21:17, 12 May 2006 (UTC)
Some human children can see into the UV spectrum but eventually lose the acuity. Children can generally hear higher pitches than adults as well- call it ultrasound based on being above the arbitrary mark of pitches most adult humans can hear. -- 151.151.21.100 20:54, 2 August 2006 (UTC)BEN 8/2/06
I'm writing a story that involves a crashed spaceship, among other things, and originally I just had SAS soldiers securing the site (plot device to get my characters there). It occurs to me that the government would also send scientists to investigate it. After all, that's what they do in movies and so on.
But exactly what kind of scientists would be sent? I can't imagine we have too many people lying around with a degree in extraterrestrial technology study.
IN THE NAME OF HOOLA, there's edit conflict for a reason! Don't just delete my article like that! *hrm*... now. Humans see roughly from 400nm to 700nm waves (IIRC). First of all I would like to ask: If we could see from, say 300nm to 800nm, would we perceive the colours as the same, but "spread out", ie seen only a stretch? Then there is another, bit tougher question: Some animals are bound to have different spectra, what are the lowest and highest wavelengths that some animals can perceive in vision, that we know of? Manymanymanymany thankseses. :)
Who's Hoola and why don't we have an article on his/her worship? alteripse 16:28, 7 May 2006 (UTC)
Okay, this'll probably get me banned from the reference desk. Let's pretend there's this traffic light at an intersection that never works properly, and despite the amount of protests and complaints to the state transportation (and whomever deals with transportation in the county, as well), nobody has come out to fix it. Let's also pretend that I'm fed up with said traffic light and wish to perform malicious action on said traffic light to force the DOT to come fix the damn thing. My question is, what would send a clear message and not allow me to be caught (hypothetically): a localized electromagnetic pulse (and how would one construct a device to do that)? A small explosive? It would, of course, be mounted on the control box. Cernen Xanthine Katrena 13:25, 7 May 2006 (UTC)
Perhaps you could do it the
old-fashioned way? --
Crucible Guardian
23:29, 7 May 2006 (UTC)
Well. I don't think I could detonate a nuclear warhead (my insurance doesn't cover fallout from even accidental detonation of a nuclear device -- what a load of crap, hm?). And so much for the emp grenade. I could hit it with a sledgehammer, but there's a 7-11 right in front of it (which means that I can be caught...). It's not the lights I want to damage, it's the control box. They'll have to send a technician instead of just a repair crew, it'll be costly, and painful, for the county to do that. I was thinking of hitting it with the sh*tmobile...do you think a vehicle accident would take one of those puppies out? After reviewing a wikibook on thermite synthesis, I think I may have my answer, but the question is, is such a reaction simply incendiary or explosive? Cernen Xanthine Katrena 10:15, 8 May 2006 (UTC)
Yeah! Vandalism is the answer to real life problems as well as Wikipedia problems! -- Ginkgo100 15:59, 8 May 2006 (UTC)
I'd get three large stickers, one with "green" written on it in text (it doesn't matter what color), one with "orange" (or "yellow" if you wanna be nasty) and one with "red". Climb up the pole and stick them on each of the lamps, but not so much as to obscure the actual light, so that all the people that weren't colorblind wouldn't get confused.
You wouldn't cause enough damage to get into trouble, but your government would be enclined to set things straight, and there'd be a good chance they'd fix the other problems while they were at it.
Also, it helps if you live in one of those towns that has horizontal streetlights, like
Montreal, which would make it even harder for the dumb colorblind people to tell which was which.
freshgavin
ΓΛĿЌ
07:07, 10 May 2006 (UTC)
carbon isnt necessary for human survival,yes.But is it that carbon is needed atleast in little content in our bodies?or maybe i am wrong?If not,what are the diseases caused by deficiency of carbon?
--thanks!
--yes,as a matter-of-fact i was reffering to pure carbon and not carbon compounds.thanks!--the same person who asked the question:)
No, your body cannot do anything with pure carbon, however in cases of drug overdoses, paramedics often deposit activated carbon inside a patient's stomach to absorb the toxins -- Crucible Guardian 23:25, 7 May 2006 (UTC)
I have recently received a computer [for free] from my father’s company. He didn’t want it, so now it’s mine :P. I have a weird problem though: every time I turn it on, the computer asks me to log in with a username and password. FWIW, the computer runs on Windows 2000 Professional. I’ve tried to get around the login by going into safemode and whatnot, but it always ends up on the login screen. Even if I type in a legitimate username and password, I can’t get through, because the computer is making a vain attempt to connect to a server that no longer exists. My question is this: is there a way for me to disable the network login without being able to bypass the login or having boot disc for Windows 2000? Perhaps there is a way to get into DOS upon startup and disable networking…?-- The i kiro id ( talk)( Help Me Improve) 16:44, 7 May 2006 (UTC)
With old corporate, networked PC's and laptops, the only answer is to go to Linux. First, for a corporation to give it away, it has to be really old! Second, the corporate IT-jocks have probably really done a number on it, for 'security'. I've had lots of success with those throw-aways and Linux. -- Zeizmic 23:45, 7 May 2006 (UTC)
Then you are attacked by the proverbial helical inclined plane. -- 192.75.48.150 12:13, 8 May 2006 (UTC)
Diamonds: How many are consumed by the United States AND How many diamonds are extracted in the United States?
Thank you so much.
My stepdaughter has been trying to find information on the history of Health Screening (as we are in the UK, I suppose with a UK bias) and has had little success. I too have tried and not really found anything. Could someone please point us in the right direction or give us some information. Many thanks. emjay----------
I had heard about fullerene, and learned a few thing about it, but never seen it until I saw the wiki article on it, where it shows the compound in crystalline form. I thought, how is fullerene bonded as a solid, was this at extremely low temperature, or is there a bond between the balls, or what, are they held together by Van der Waals, if that is possible. If they are, how can they stay together at high temperatures. Also the same question about buckminster fullerene, as that has Carcons with only 3 bonds, which would make inter molecular bonds possible (wouldn't it) so is that bonded differently? Philc T+ C 18:46, 7 May 2006 (UTC)
hi, now that its estabished that people are gay through nature rather than nuture, does anyone know whether there was definitive study that drew this conclusion or was it more a set of smaller ones that tended towards it? if anyone could direct me to them then that would be great. also, i would appreciate it if bigots wouldnt post their vitriol here... thanks! andrew
Homosexuality is most definatly not caused ONLY by genetics. Several studies on identical twins have been done that show that genetics probably plays a roll, but if genetics were 100% responsible for homosexuality, the percentage of twins that had the same sexual orientation would be 100, but it is not even close. It's more like 40-something. -- Crucible Guardian 23:20, 7 May 2006 (UTC)
Are petroleum distillates absorbed through the skin? I'm having trouble finding out information. If they are absorbed, what is the effect on the body? KeeganB
I'm talking about the kind in furniture polish. KeeganB
Oh, nevermind, I managed to find the MSDS. The answers is no. I'm such a fuck up. KeeganB
This post claims that someone with only 1 cubic mm of brain tissue functioned normally, and a search for the professor mentioned in the post reveals similar stories. Do you know if this has ever been published anywhere reputable, or is it just a spontaneously generated bit of wishful thinking?
Whatever happened to this story? Seems to have fizzled out. JianLi 00:56, 8 May 2006 (UTC)
it's really cool anyway
If a valveless pulsejet were to be built with a cruved pipe, with out a camber and increasing or decreasing pipes, would it still work? Patrick Kreidt
Why do most medications have HCl in their formulations?
does co2 in a plant travel through xylem, phloem, or...?
ok. the longer explanation follows. im taking the bio ap tomorrow, and my teacher gave us a take-home open-note (and internet, but not fellow student) test on the last section we'd need to know for the ap. one of the questions was: "If radioactive CO2 is supplied to a mature leaf of a plant, it is often possible to detect radioactivity in the young growing leaves of the shoot apex a few hours later. In which tissue did the radioactive compound(s) travel? a. phloem b. xylem c. stomata d. cortex e. pith"
I'm @$&# near positive it's not cortex or pith because that wouldn't make any sense and pith doesnt even really fit in the whole picture. i know the stomata accept the CO2 and transpire away water, so i was thinking the xylem would carry it, because it doesn't seem to me that the stomata, being small, single cells, could be the "tissue" (if they're considered tissue, which I think they're not)in which the compounds "travel." sorry i didn't elaborate earlier, and thanks for the help
thanks
i am a highschool junior who has enjoyed science for years but has no particular affinity or interest in pursuing it heavily in college or as a job. so i signed up for the harder of two AP physics courses at my high school, which i'm supposed to take after learning calculus, when i haven't yet learned calculus (i'll be doing it concurrently), because the other course doesn't sound as interesting. i'm excited, but the course is supposed to be really tough, and i want to prepare as much as possible for it over the summer. any books anybody'd suggest i read to help me with understanding the physics (or calculus) basics? if i was just to try to learn physics basics on wikipedia, how should i go about doing that? they have a "where to start" section, but it didn't help much because i have no idea what i'm looking for. thanks so much to anyone who can help
im taking the bio ap tomorrow. good luck too and thanks to both of you
The chief cells of the the parathyroid glands produces a hormone that does what?
parathyroid hormone (it's a wikipedia entry) - increases blood calcium levels, wheareas calcitonin (in the thyroid) decreases it
I've heard that light is the fastest thing in the world and nothing travels faster than it.But instead of saying that light is the fastest thing in the world, why don't we say that light is the thing that's known to be the fastest thing in the universe?I mean, what if there are things that travel faster than light, but it's just that they haven't been discovered?User:Bowei
What is the NGV.gas?
i have heard that a duck's quack does not echo.Is this true?If yes why?
Just "suppose" I want to transmit 10 Mbit/sec of data across, say 30km of line of sight at microwave frequencies. First, what bandwidth of spectrum would I need? Secondly, what is the typical cost for receiver/transmitter/microwave dish/etc for the pair that are needed (one each end), excluding any masts and installation. Thank you.
hey 2 all!
In order to understand my question: Rotate your right foot in clockwise direction while sittin.Simultaneously draw the number 6 with your right hand in air.You will find that your foot has changed its direction!
Now my question: Why the hell does this happen?????
Mac, please Don't bite the newcomers
Anonymous, this is because the brain is conditioned to do things in certain (easy) way. This applies to any new skill you learn (like playing piano, juggling the balls or rotating your parts in the way you discribed). You can overcome this by practicing the act slowly and repeatedly.-- Wikicheng 11:54, 8 May 2006 (UTC)
Is it just me, or is this exactly like a question that was asked a really long time ago [23]? Black Carrot 23:28, 8 May 2006 (UTC)
who is the giant spagetti monster god
When we observe stuff the wave function collapses but why?
I recently bought a new Dell Dimension 9150 and it works great, except for one problem: my TV tuner card (Pinnacle PCTV 310i DVB-T) is able to scan for channels, but no channels are ever found. I am quite sure that this is some kind of incompatibility between the PC and the card, because the card worked properly in my previous PC. Any suggestions on how to solve the problem? I have search the Internet, and it appears to a be quite common problem. Thanks in advance. -- Andreas Rejbrand 15:27, 8 May 2006 (UTC)
The Prypiat, Ukraine article claims that it "will take up to 900 years to decay sufficiently to render the area safe" while the Chernobyl disaster article says "rendered land in a radius of hundreds of miles from the plant uninhabitable for at least 100 years." Both are unsourced and many similar unsourced claims appear on Google. Which is correct? How long will it take for the more contaminated areas (excluding the plant itself) to get back to about background levels? Cesium is the major radiation source and has a half life of 30 years, so in 900 years, only 1/10,000,000th of 1% would remain. The map in the disaster article shows the most contaminated areas at "greater than 40 curies per square kilometer" and the background radiation article says that average it is about 2.5 mSv, but there seems to be no way to compare those numbers. Rmhermen 15:42, 8 May 2006 (UTC)
Are ther eany types of chemical reactions that are not redox reactions? They teach about redox reactions as if they are special, but I can't think of any reactions that aren't redoxes. Maybe I'm not thinking hard enough?-- Chris 15:37, 8 May 2006 (UTC)
I Verify the above; while there may be some exceptions,substitution and condensation reactions are not redox reactions. -- Craiglen 16:42, 8 May 2006 (UTC)
A variety of other types of reactions can be found at chemical reaction, or you can look at Category:Chemical reactions for many more examples. -- Ed ( Edgar181) 16:48, 8 May 2006 (UTC)
Do all birds lay eggs? I seem to remember from my college orinthology course that there are some species of birds that do not lay eggs? I got $5 riding on this with a friend so if you can prove him wrong. Even if you have to stretch the "truth" a little, that'd be grrrreat.
Maybe there's a kind of bird that doesn't lay eggs, it just merely excretes them, or perhaps shoots them out at high velocity. freshgavin ΓΛĿЌ 04:22, 9 May 2006 (UTC)
Kind of a weird one here...the other day I went for a CT scan of my sinuses, and during the procedure I saw strange blue lines moving up and down my vision (eyes closed). Of course I was supposed to keep still, but the appearance of these startled me, and I wondered...if these are seen by many people, why don't they warn the patient? If they aren't seen by many people, what's different about me? -- Kickstart70- T- C 17:21, 8 May 2006 (UTC)
Diesel engines have been hybridized with electric engines in trains, why haven't car manufactures spent money in putting the efficient diesel-hybrid engine technology into cars?
1. Wouldn't the diesel aspect gives cars the ability to be manufactured for biodiesel, therefore using a renewable resources?
2. diesel engines work on compression and therefore theoretically can last longer, right?
3. hybridizing this with an electric engine would create a relatively clean engine that runs on renewable resources, wouldn't this be a smarter alternative to today's engines?
Why is it that car manufactures haven't built a car around a biodesiel-electric hybrid engine?
This type of engine (diesel-electric hybrid) has been used in trains for almost a centuary, it's efficient and robust, provides a lot of power (it drove trains) and it would use renewable resources...
-- Stewart Alexander --
A gas hybrid saves 20% in the city, and almost nothing on the highway (air resistance dominates). Current diesels already exceed that, but are dirty (I saw a brand new Jetta TDI belching!). New low-sulphur diesels should be much cleaner, so right now, a diesel hybrid doesn't make much sense. -- Zeizmic 21:37, 8 May 2006 (UTC)
I need some help from someone good with Visual Basic.NET edition, as I learned to program in VB6, and I'm having a couple of problems with my .NET coursework project, and as usual trying to get a relevant answer out of MSDN is like trying to squeeze water from a stone.
PrintLine(1, txtIDNumber.Text, ",", txtSurname.Text, ",", txtForename.Text, ",")
"123, Smith, John"
Do While Not EOF(1) lineoftext = "" lineoftext = LineInput(1) * textarray = Split(lineoftext, ",") If textarray(0) <> txtIDNo.Text Then PrintLine(2, lineoftext(1)) End If Loop
Is it possible that organisms could live with an element rather than carbon, i.e. silicon? Could it work hypothetically?
Thanks!
AHa, thanks for that :D
i was thinking how much of an advantage/disadvanatges would there be to putting communication telescopes (like the deep space network) in the artic/anartica? i mean all the equipment will be kept cold easily, your a long way away from any man made sources of interfernce and u could in theory point the telescope in any direction, are there any other things i missed? and what problems are there?
If you want a neutrino telescope that requires a mile of ice for detection, then Antarctica would be a good place to build it. Which is why our neutrino telescope is in Antarctica. - lethe talk + 03:29, 9 May 2006 (UTC)
If I know someone's IP Adress how do I find out who it is? Someone insulted my friend and all I have is their IP Address. Þanks *Max* 21:25, 8 May 2006 (UTC)
Do hospitals give people who already have HIV/AIDS blood from other HIV positive people? A Clown in the Dark 22:39, 8 May 2006 (UTC)
If I remember correctly, in And The Band Played On, it states that blood banks generally love lesbians, because they tend to have the cleanest blood (esbians almost never contract blood-born STDs). Raul654 03:10, 9 May 2006 (UTC)
All the quasiturbine needs is an improved method of lubrication so that it will survive for more than 24 hours and according to its inventors its efficiency and capacity to use alternative fuels will be so high that the price of gasoline will plummet so low that there won't even be a reason for building gasoline pumps with meters. -- PCE 00:05, 9 May 2006 (UTC)
Hi You must have a large coil of wires moving through a magnetic field, which could be normal magnets or produced from electromagnets. In large scale (power plant generators) - does each generator have a Huge magnet built in or do they have electromagnets? if the later is the case where did they get the electricity from in the first place - isn't this a case of catch22?
If I remember correctly, to start with, they use the permanent magnets of low strength to generate some electricity. A part of this electricity is used to power the electromagnets, thereby increasing the magnetic field and hence the generated current. This goes on till a balance is reached. Please note that this is a kind of negative feedback and hence has to reach a atable state.-- Wikicheng 08:08, 9 May 2006 (UTC)
Also, this is why they price electricity differently if you buy it at low peak. As you can imagine, start-up of a large electric generator is a big deal, so it is better to keep it going as steadily as possible, continuously. This means that if you're going to produce enough power for people at peak times, you have to produce too much at other times even if nobody will buy it. Skittle 09:23, 9 May 2006 (UTC)
Typically I'd think its a permanent magnet. Likely a simple hard ferromagnet dug out of the Earth, it wouldn't be an electromagnet because if you think about it, if you could use the electromagnet to power a generator, then simply feeding the electricity back into the generator would produce more electricity -- violation of entropy and the conservation of energy. Soltans 23:07, 15 May 2006 (EST)
Greeting Wikipedia -
What is "ecosystem evolution" ? What evolutionary / game - theoritic mechanisms or principles apply ? What book describes the evolution of ecosystems ?
Thank you, Willie
Thanks for the advice. - Willie
Hey. I'm currently on a 802.11g Wireless Network. My computer connects to a router that has a cable modem plugged into it. Every so often, my wireless network connection will still show 'connected', but all network traffic will stop working (including intranet file sharing, local apache servers, internet, etc.). The only way i can fix this is to 'repair' it in Windows (right-click on the icon in the tray and click 'repair'). What in the world is going on, and how can I fix this (and if I can't fix it easily, how can I get my internet working without having to click repair?). It's happening multiple times a day, and it's getting annoying. — Ilyan e p (Talk) 01:58, 9 May 2006 (UTC)
Could be classic Windows Spyware Router Choke. -- Zeizmic 11:48, 9 May 2006 (UTC)
Something similar used to happen with mine, before I upgraded to SP2. Theres an article about it here, with some possible workarounds. There might be some other useful stuff here as well. Hope it helps. CaptainVindaloo 16:56, 9 May 2006 (UTC)
I use both a WEP key and 'only allow trusted MAC addresses'. Plus, I'm pretty sure it's not my modem since only repairing the wireless connection in windows seems to fix it (and the internet works on the other computers meanwhile). I'll check out the links that captainVindaloo posted shortly. They appear to be for pre-SP2 and I have SP2. Thanks for the help and let's hope it works. —
Ilyan
e
p
(Talk)
20:30, 9 May 2006 (UTC)
Also, Spyware can do that? I'll run a scan but i don't think there was anything on my PC. — Ilyan e p (Talk) 20:31, 9 May 2006 (UTC)
A couple of points here. WEP uses cryptography which was very poorly planned and as a result is easily breakable. It should therefore, be regarded more or less as a speed bump to attackers, not as a serious barrier to them. WPA (partial 802.11i) and WPA2 (more complete 802.11i) are MUCH better, but not available on all equipment, even with a firmware upgrade. If this is your plight, protest to your vendor... But, good quality crypto is the only possible way of defeating the security leak inherent in all broadcasting methods -- eavesdropping. Only if you force them ot cope with gibberish they can't convert ot something intelligible can anything going either direction be thought even remotely confidential.
Denial of service attacks are relatively easy to manage for 802.11 networks, most especially for Infrastructure mode (ie, when using an Access Point). These have nothing to do with cryptography (WEP, or 802.11i (partial or not)), but rather to do with the underlying management of the medium and with the realities of low power radio communications. Using 802.11a forces a penalty in range (roughly half that of the lower frequency 11b/g) but, by providing more, and less overlapping, channels, removes at least one of the possible denial of service attacks.
Wireless is not, though it can often be used as if, really securable. It remains vulnerable to many attacks, accidental and deliberate, even when observing best practices with high quality gear meeting all appropriate standards.
Wired connections (eg, Cat 5 10/100 Ethernet) with all its problems, has consderable advantages in terms of reduced downtime and invulnerability to many potential attack modes. And it's almost always faster.
Nonetheless, in the situation described, I agree that it seems to have been some oddity of Windows which caused this problem. Use Linux, one of the BDSs, or OS X, instead. There will be difficulties, largely due to lack of vendor support, but the advantages in less mystery in the problems encountered will be more than sufficient offset. And the software, and much of the applications (ie, a worthy equivalent of Office -- OpenOffice) are free. Both in liberty (they're open source) and as in beer (no cost). Avoiding licensing hell is alone worth almost any trouble, in my view. 71.249.12.89 13:29, 12 May 2006 (UTC)
The masses on a pulley are each initally 1.60m above the ground, and the massless frictionless pulley is 4.8 m above theg round. Mass 1, on the left side of the pulley, is 1.2kg, and mass 2 is 3.2 kg. What maximum height does the ligher object reach after the system is reached? don't think I even got the equations right....but here goes...
Σ F = ma T - FG1 = m1a
Σ F = ma T - FG2 = -m2a
Then I subtract my equations..
FG2 - FG1 = (m1 + m2)a a = (3.2 x 9.81 - 1.2 x 9.81 ) / ( 1.2 + 3.2)
Then a is equal to:
a = 4.45 m/²
So next I solved for v2, just before m2 hits the ground
v2² = v1² + 2ad v2² = 0 + 2(4.45)(1.6) v2 = 3.77 m/s
Next I used 3.77m/s to solve for the distance that m1 is moving up, which is the original question
v2² = v1² + 2ad d = (v2² - v1²) / 2a d = (-3.77² - 0²) / 2(-4.45) d = 1.6 m
That means that object moved 1.6m above the 1.6m, PLUS the 1.6 m that m2 moves. That's a total of 4.8m, but alas, that is not the answer (3.9m). If anyone could point show me what I've done wrong, thanks. C-c-c-c 03:25, 9 May 2006 (UTC)
Well it's a pulley system, and there are two masses. M1 is 1.2kg and M2 is 3.2kg. The moment after second or first mass is added on to the pulley, the heavier one falls down and lifts the lighter one. I'm supposed to calculate that distance. C-c-c-c 06:11, 9 May 2006 (UTC)
I'm guessing that by "maximum height" the problem means: after the large mass hits the ground, and the small mass rises through 3.2m, the rope will go slack and the small mass will free-fall until it returns back down to 3.2m (at which point the system will continue to oscillate until all the impacts between the big mass and the ground dissipate the energy). During that free-fall, what maximum height does the small mass reach? I wouldn't try to solve any equations of motion, or consider accelerations, forces, or tensions. Just apply energy conservation very carefully. Melchoir 07:30, 9 May 2006 (UTC)
Mhm alright. I'll check with my teacher. Thanks!
C-c-c-c
08:16, 9 May 2006 (UTC)
I was thinking too simply and I forgot that you'd be dealing with stuff like slack at that level! Melchoir's solution is obviously correct but it seems like you haven't been taught energy conservation yet, so you can think of it like this: You have the acceleration at the point the system releases (9.81m/s²), you have the velocity at release (3.77m/s up) and at max height (zero).
It's been so long since I've done math in an organized mannar so excuse me for my weird methods of deriving equations. Using the formula for acceleration you get:
which gives you to 0.38 seconds.
and you get 0.72, which when added to the base 3.20 gives you the same answer (3.92) as Melchoir as well as the text book. I wonder if you understood that O o;;. freshgavin ΓΛĿЌ 06:14, 10 May 2006 (UTC)
Sorry to be a bother again, I just have quick question on solving problems without mass. A box is given a push so that it slides across the floor. How far will it go, given that the coefficient kinetic friction is 0.20 and the push imparts an initial speed of 3.0m/s? I have to figure out the acceleration, then I can use kinematics to get the distance.
So:
FA - Ff = ma FA - μkFN = ma FA - μkg = a FA - 0.20(9.81) = a
I canceled out the masses but now I have two unknowns still. I don't know what to do with FA...I think I may be missing some critical information that I should know but can't seem to have pop up in my head. thanks. C-c-c-c 08:47, 9 May 2006 (UTC)
Can anybody tell me what kind of tank is pictured in this photo. Thanks.-- Peta 04:41, 9 May 2006 (UTC)
Are they? a.s.s can't survive on their own while c.p.s can. A.s. can't perform simple tasks like buying gum or estimating if things are expensive, etc.-- Jondel 05:10, 9 May 2006 (UTC)
I took these pics after finding the little guy in the ditch on the side of my road. He's about 2" long and orange with darkish spots. The road is in the Green Mountains of Vermont. I later found quite a few more of these things on the side of the road. Sorry the pics aren't better but I'm not that good of a cameraman. So, what is it? Dismas| (talk) 05:24, 9 May 2006 (UTC)
It is a newt! We have them at our diabetes camp farther south in the Appalachian mountains of Pennsylvania. A newt is an immature salamander still in the land-living stage. They eat small bugs. You can find them in the grass or leaves within a hundred yards or less of a swamp or wet area. They are about 2" long, move slowly and are easy to catch, not slimy. The dominant color of the Pennsylvania ones is a burnt or dusky orange, but they have two parallel rows of bright orange dots ringed with black running down their backs. Beautiful. When they get older the color changes (to black and white I think), they grow to maybe 5 or 6 inches, and they move back into the water and are rarely seen. alteripse 10:50, 9 May 2006 (UTC)
Cool. Never knew newts were salamanders. Not that I've ever thought hard about it before though! freshgavin ΓΛĿЌ 06:16, 10 May 2006 (UTC)
i've always been curious to learn how pros balance a basketball on their fingertips.just exactly how do they do it?
thanks a tonne
In fact, you can balance the ball even without spinning it (try it !). Spinning stabilises the ball due to gyroscopic effect and makes it easier (in theory). The tough part is to learn the art! Experts balance many other objects like plates too. -- Wikicheng 08:47, 9 May 2006 (UTC)
Hi,
In the movie and in pictures of Titanic, the exhaust pipes of the ship seem to be not perfectly vertical but are tilted slightly. Is there a technical reason why it should be ? -- Wikicheng 09:11, 9 May 2006 (UTC)
2 quick questions:
Zunaid 10:19, 9 May 2006 (UTC)
Hi, I was having a discussion with a few friends and was wondering if anyone had any reputable references in regards to how much of our brain we use. I've heard that we use only 1% of our brains ability. However I've also heard we only use a small percentage at any given time. Others have stated that we use 100% of our brain just that we do not use it all the time, and that with differnt tasks we use different parts of our brain but in the end every part of our brain we use.
Hi, I've been wondering about what could be the English name for the screaming colors usually used in highlighter pens and police vests. They are usually pink or yellowish green, but can also be orange (see Image:Helsinki fire truck H10.jpg), and often hurt the eyes on a clear day. In Finnish and apparently German they are called "neon colors" but I couldn't find anything similar in the English Wikipedia. – Mysid 11:13, 9 May 2006 (UTC)
When the colors were first widely used in the US in the late 1960s, they were often called DayGlow or Day-Glo. alteripse 11:49, 9 May 2006 (UTC)
The jackets in these colours are (at least in the UK) called high visibility or hi (gh) vis. I've consequently heard the colours referred to as "high vis(ibility) yellow/orange". Thryduulf 01:01, 10 May 2006 (UTC)
I went to take the garbage out and since it rained last night there was a handful of earth worms on my drive way. To get a little good karma I started moving the worms into the grass to ensure the sun or my car doesn't kill them. It turns out one of them wasn't a night crawler though. It had the same body size as a medium sized worm, sticky with a slime trail like a slug, had a flat head it dabbed around and occasionally raised like a snake, and had two brown stripes down it's back. The girlfriend has the camera in her car so I can't take a picture of it. I've never seen one of these before. Anyone know what it could be or know of who I can ask about it?
On a side note, these things eat earthworms by extending their esophagus-analogue into their prey. Disgusting! Isopropyl 02:09, 10 May 2006 (UTC)
In most of the exams Girls outperform boys. Why is this so?
Of course, many people believe in the opposite - that boys outperform girls academically. Go figure. See also Sex and intelligence -- Fangz 14:00, 9 May 2006 (UTC)
A 50 turn coil has a sinusodial magnetic flux. Maximum rate of change of flux is 5Wb/s. Find the peak amplitude and RMS voltage.
I know induced voltage is e = d/dt, and = N.A.B, but I'm not sure where to go from there..?
Bwgames 12:37, 9 May 2006 (UTC)
How does body hair know when to stop growing, and when to grow back? 87.194.20.253 15:52, 9 May 2006 (UTC)
i need relevant information about grain drying
I would start with food storage and harvest. -- Ginkgo100 19:00, 9 May 2006 (UTC)
what about the brushless alternator voltage regulation?.I am a electrical engineering student.Its a portion on our syllabus.my question is again repeating,can you give any idea about the voltage regulation of brushless alternator?.I am engineering student in india.
Thank you
what about the brushless alternator voltage regulation?.I am a electrical engineering student.Its a portion on our syllabus.my question is again repeating,can you give any idea about the voltage regulation of brushless alternator?. —Preceding unsigned comment added by Chandykv ( talk • contribs)
Because of a problem which is a long story, I need to send a large file to my home email address. The problem is my email services will not allow a file this size to be sent. This is an executable file so PKZIP will not shrink it much if at all. Is there a way to break the file up into parts and send each part seperately, then reconnect the parts on the receiving end?
When I press Ctrl + S in notepad while at the end of a line, the cursor jumps back several spaces - why?
When 'word wrap' is activated, and a long string such as "enteric/genital" wraps to the next line, and I decide to turn it into "enteric or genital", why does notepad ignore the fact that "enteric" will now fit on the line above? -- Username132 ( talk) 20:10, 9 May 2006 (UTC)
As far as I know, both these things are bugs in notepad. They have been bugs since the earliest days of Windows 95. Why no one at Microsoft has bothered to fix it in 10 years is beyond me, but it's closed source so no one else can fix it. If it really bugs you you can use Wordpad (Which has its own host of bugs and problems, but has the above bugs fixed), or download another text editor. — Pengo 02:19, 10 May 2006 (UTC)
What pigment(s) are used in ultraviolet-sensitive beads? The web sites I've checked don't indicate the identity of the color-changing material. Hyenaste citation needed 20:44, 9 May 2006 (UTC)
how accuratley are satelites tracked say if there in orbit around the moon or mars? and does the tracking relay on just radar based systems, or are other methods used? cheers Colsmeghead 21:06, 9 May 2006 (UTC)
In general, a satellite's orbit can be determined by making a series of observations in some reference system: from a ground station on earth to the satellite, from the satellite to the ground station, or between satellites. A series of measurements of direction, range, or range-rate could be used to refine the orbital parameters.
A number of methods have been used to track earth-orbit satellites: photography to determine direction, electromagnetic signals such as lasers or radar–either impulse timing or phase comparison to measure range, and Doppler shift measurements to determine range-rate. Günter Seeber (2003). Satellite Geodesy (2nd ed.).
For satellites orbiting other celestial bodies the most convienent method is most likely the Doppler method. Another technique that should probably be metioned is interferometry to determine direction. Very Long Baseline Interferometry is used to realize the reference systems in which measurements are made, and our VLBI article mentions that it was used to track the Huygens probe accurately enough to measure windspeed on Titan. EricR 12:32, 10 May 2006 (UTC)
The actual orbit of a satellite is actually NOT easy to predict with great accuracy. In fact, the US military is actively tracking all artificial satellites orbiting the Earth, and frequently updating the characteristics of all orbits. This information is provided to Space Agencies and other operators, who may actually activate small rocket engines on the platforms to adjust or correct the orbit on a regular basis. These orbital corrections are necessary because the Earth (or any celestial body, for that matter) is neither homogeneous nor symmetrical (even the center of mass of the Earth is moving as a result of ocean currents and wind systems), and because the orbit of each satellite results from the gravitational attraction of many (as in infinitely large) objects (mostly the Sun and the main planets, as far as the Solar System is concerned). Friction is often small, but never totally negligible either, and then there are other forces, such as the solar wind, impact from cosmic dust, etc. While each perturbation, by itself, may have a rather small impact, the cumulative effect of all these mechanisms over a long period of time does result in the 'degradation' of the orbit, hence the need to periodically apply corrections. Hope this helps. -- Michel M Verstraete 21:57, 12 May 2006 (UTC)
Why does sensation of speed decrease with increased distance from the road/increased altitude? i.e. Why does 20mph in a go-kart feel so much faster than 20mph in a standard road car? I presume that it is the same reason why when you are on an aircraft coming into land it appears that you are going slower than any road traffic about until you are very close to the ground when you are suddenly aware of how fast you are truly going? Does this effect cause difficulties for pilots?
My initial vauge guess is that it is something to do with paralax, but I don't see how that would have any significant difference between being 20cm or a metre or 2 metres above the road? Thryduulf 00:53, 10 May 2006 (UTC)
My dad owns a 40-foot steel sailboat. On days with very little wind, when we weren't in enough of a hurry to turn on the engine, he would put me in a lifejacket, tie a rope around my waist, and drop me off the stern. What felt like not moving at all while on deck was fast in the water. It just has to do with proximity to the reference point used to estimate your speed. moink 20:51, 12 May 2006 (UTC)
I just came across the consonantless Ia io [28] ( Great Evening Bat) and was wondering if this was the shortest binomial name there was, and if there was a place in wikipedia for such mindless trivia. — Pengo 02:31, 10 May 2006 (UTC)
Nice work creating the article. Thanks Mysid, and everyone who researched it! — Pengo 13:10, 11 May 2006 (UTC)
I know there are five main senses, but for the other senses that are not the five main senses would sense of navigation be considered a sense in some form or fashion?
Hi. When a balloon, filled with regular air. Is inflated to a large size, not tied, and then released, it goes flying. This is common sense, however, I need to know the physics of it. What is the physical explanation for why it flys? I really need this question answered soon. Thanks Tobyk777 04:23, 10 May 2006 (UTC)
As it's summer here, I thought it would be quite nice to take my Hyacinth Macaw out for a walk with me in the sun sometime (or even just in the garden). He's fully flighted, so what would be the best way to keep him with me? A chain from his leg to my wrist, or one of those parrot harnesses you can buy on the internet? Anyone have any expierience with this? Thanks. -- 81.77.242.228 06:01, 10 May 2006 (UTC)
Personally I think it would be much better to return the bird to the wild where it could fly free. Alternatively you could give it to a bird sanctuary. Don't you think it is cruel and uneccessary to capture a free spirit like a bird ? That is my opinion. Antipodeite 11:31, 10 May 2006 (UTC)
(Taken from Talk:Mozilla Firefox)
I use Firefox to browse Wikipedia and other websites. I often use the Control +/- function to make the text larger or smaller. For some websites this works really well because the lines of text stay the same width. For other sites though, the lines of text get wider and wider so that I have to scroll back and forth horizontally just to read them. On some sites, like Wikipedia, when I make the text larger it makes the lines get narrower and narrower.
So is there anything you can do with your Firefox settings or extensions to fix this problem, or is it just up to the webpage designers (including those who maintain the MediaWiki software) to code their pages better to fix this problem?
Any help with this would be much appreciated. I've got a small monitor, and I often need to make the text bigger so that myself and others can read it without being real close to the screen. Thanks!
think of examples in your everyday life where the princlples of reaction rates are applied( temperature, disloving, or space) ~~
The more objectionable a person's statements, the more quickly you react by disloving them. Grutness... wha? 06:55, 11 May 2006 (UTC)
I read the stars article, and there were a few things i didnt understand. Firstly, what the 'fuel' in the stars is. Secondly, when they die (im pretty sure this is when they run out of fuel). And thirdly, what size they need to form into black holes. Thanks. ````
A gating current can latch a thyristor.But is it possible to latch a thyristor during the(90 -180)degree fall of input sinusoidal voltage? We know that a thyristor can be triggered by the +ve half rise(0deg to 90deg) of sinusoidal voltage,but a little gating current would latch it at a smaller potential than it would have.So is this triggering possible during the +ve half decrease(90deg - 180deg)?
How were the planes that delivered the first atom bomb protected from electromagnetic pulse? Is it possible to protect ordinary devices from EMP weapons as well?
I wish know the melting point of Empirical formula : C8H12O5
Chemical Name: 1,4:3,6-dianhydro-2-acetyl-D-glicitol
or
2-acetyl isosorbide
Regards N Thanks
Having found several tins, what is it used for. I am familiar with Sodium Hypochlorite which I use for sterilising beer bottles.
I was just wondering, when a baby named X belongs to a family named A, and a baby named Y belongs to a family named B, grow up at the same time. Lets say X sees a banana green, but his family A says a banana is yellow, and he sees a tomatoe blue and his family says the tomatoe is red! When he sees the sea red his family says the sea is blue! While the other baby sees a red banana and his family says its yellow and he sees a green tomatoe and his family says its red and he sees a yellow sea and his family says its blue... anyways the point is both babies will grow up, knowing all the colors, and knowing all their names but, they will be seeing somethin different! He sees a red banana but he calls it a yellow banana! he sees a red car and calls it a yellow car, and the other one will see the car blue but call it yellow too. I just want to know if anyone can proof that everyone sees the same colors...? it could have a simple answer i just want to know.
I know humans have balance, but do animals with four legs have balance too?
Hi: I notice that in english language male and fmales of diferent species have special names and also when they refer to a group and population have also different names e.g. hen - ruster bore - school - herd etc. How I can find a table or place that list all af those names without going species by species? Thaks MhE
The article on xenotransplantation says "Disease transmission (xenozoonosis), and possible long-term effects of xenotransplantation on the human gene pool and permanent alteration to the genetic code of animals are a cause for concern." - how does it affect the gene pool? Unless it's testicle transplant, I don't see how the germ-line is affected? -- Username132 ( talk) 21:34, 10 May 2006 (UTC)
A past exam question was "Xenotransplantation will never solve the issue of the kidney tranplant waiting list. Discuss" - I'm wondering how this could be so? Is it because the engineered HLAs wouldn't please everybody all of the time... I mean what's the point in xenotransplantation if you still have to worry about finding a match? -- Username132 ( talk) 21:56, 10 May 2006 (UTC)
Anyone know how to make numbered lists in word where the numbers are genuine numbers and not a "magic field" using Word 2003 in XP?
I maintain a list of events and each month add any new ones at the bottom. I then want to be able to sort on (say) field 3 and have the numbers stay with the relevant line, so that i can later sort by field 1 and put them back in order. When I was using good old Word2, numbered lists just inserted text. Now it seems to do this magic stuff - including ignoring any numbers already there! Frustrated. -- SGBailey 21:40, 10 May 2006 (UTC)
After enduring an increasingly dreadful smell in the laboratory in which I teach for five days or so, I found that thioglycolates had been poured down a sink into an open trap below, rather like a sink in a cupboard, where they had presumably released thioglycolic acid into the laboratory all that time. I assume that the water in the trap must have been somewhat acidic. Does anybody have any similar experiences, and should I be concerned for my health? G N Frykman 22:07, 10 May 2006 (UTC)
In all the sources I've been able to find (a doctor via my sister's memory, Wikipedia, WebMD, some site off Google) except one (my dad), the ideal resting adult pulse is in the 60-100bpm range. Now, is this the "within this you're healthy" range, or the "outside this you're seriously messed up" range? Let's say I have a resting pulse of around 96 at 18 years of age. What's that mean? (BTW, to anyone who plans to say "ask a doctor", I'm already scheduled to get a physical in a few weeks, and all I'm asking is what the webdoctors' advice means. Eat me.) Black Carrot 22:17, 10 May 2006 (UTC)
I was thinking about this before and it just occured to me that I can ask the all knowing wikipedians if they have a usefull answer for me. What I was thinking of is the possibility that there are other colors in the world that humans aren't able to see and therefore because we don't live with those colors in our lives, they are also unimaginable colors.
I was thinking of this because I recently remembered that dogs can only see in shades of red, so maybe humans can only see in shades of blue red and yellow and mixtures of them. I talked to my dad about it, who isn't at all an expert, but he said that there are shades of those three base colors that we can't see, but what I'm talking about is major colors, not just shades. Anyhow I came to wikipedia trying to find an answer and got myself on the Pentachromat page. Now, you might say that my question is answered on that page, but I don't understand all that science blah blah blah.
So if anyone can give me an answer, that would be cool. Thanks a lot RENTA FOR LET? röck 00:01, 11 May 2006 (UTC)
The short answer is yes; even limiting to the range of "visible light" (excluding ultraviolet, infrared, and so on), there are infinite colors we cannot see or imagine. Technically, though, since colors exist only in our heads, by definition I suppose there cannot be a color that no one can perceive. Color is complicated. An objective description of a color would need the intensity of each frequency, along the entire spectrum; that is, you could draw a curve of intensity vs. frequency (wavelength). Since (most) human eyes have three cones, we see in three color "dimensions". For each type of cone you can draw a curve showing how much it responds to different frequency light. (For instance, see the figure at the bottom of [35].) Therefore, we are trichromats. Dogs appear to be dichromats, as are humans who are "color blind". Every frequency of light stimulates the cones to different degrees; a mixture of frequencies as is normally present stimulates all three cones but to different amounts. Ultimately, the signal from the eye only carries three pieces of information: the red, blue, and green "channels". For a dichromat, two different colors (patterns of light intensity at different frequencies) may stimulate his 2 cones the same way, but would stimulate our third cone to different degrees, and so we could tell the two colors apart. Our televisions and computer screens only need three colors to produce the "full spectrum" of colors, but don't think that there is anything special about three. If someone (or an animal, or an alien), had a fourth cone with its own sensitivity pattern (say to yellow), two colors which look the same to us might look completely different. For instance, on my computer, purple is created with a mixture of red and blue; to a tetrachromat (or even a trichromat with different cone sensitivity patterns), the red/blue mixture might look different than a pure purple. There are three primary colors because we have three types of cones, not the other way around. Color is subjective; there is no guarantee that two different trichromats will see colors the same way. Colors exist inside our heads. It's tough to grasp some of these concepts—I still struggle with some of them—so feel free to ask me to clarify. Interestingly, for some further food for thought: there is evidence that some human females are weak tetrachromats since they have two X chromosomes and therefore two copies of the red cone gene (although they wouldn't be full tetrachromats for reasons I can explain if you're interested); so two colors which look the same to a trichromat like me might look different to a woman with such an ability. Finally, there's a fascinating article at [36] discussing the evolution of color vision in primates. The red cone is the most recent, and appears to have evolved probably to aid in selecting fruit against a background of foliage, or perhaps to select different types of leaves. I apologize for the long post; please ask me if I haven't been clear. — Knowledge Seeker দ 04:46, 11 May 2006 (UTC)
Who do you think would win in a no-holds-barred, to the death fight between a man highly-trained in martial arts, in top physical condition and a grizzly bear of approximately the same size - assuming that there were no outside variables whatsoever (just the man, the bear and a piece of perfectly flat ground)?
(I've just been thinking about an advert from a few years ago in the UK where a guy was fighting with a bear, Street Fighter II-style over a fish.) -- Kurt Shaped Box 00:31, 11 May 2006 (UTC)
DJ Clayworth 03:45, 11 May 2006 (UTC)
The bear would probably win, unless the human got extremely lucky (and was able to score a killing blow to the bear's skull or throat without first being mauled). A human - even one in top physical condition with extensive unarmed combat training - would have almost no defense against a bear's claws and teeth without the aid of some kind of weapon. Raul654 06:42, 11 May 2006 (UTC)
I think if the human was smart he wouldn't take the bear on face-to-face. To do some kind of "honorable" martial arts style fight with a bear wouldn't be very smart, as the two most dangerous weapons the bear has (claws/arms and teeth) are situated in the front of the bear's body. I'd think the best strategy would be to keep the bear slightly disoriented by trying to run around a fair amount, and probably attacking it from behind, trying to make some kind of fatal blow to the head or neck. Those are my first impressions of the situation, at least. E WS23 | (Leave me a message!) 00:52, 12 May 2006 (UTC)
Hi, I need help with my prjoect. I need help on molecules and elements. What is the different stuff about them. There meaning/deffinition. What are they made up of.
As far as I know it's a silly, improbable theory that few people would put any proper thought into, but just for the sake of science...
Ignoring concerns with available technology (a big thing to ignore, I know) what problems might there be in using a massive object's gravitational field (for example, a supermassive black hole) to view the earth's light as it is bent around the supermassive object and back to the earth? I imagine half the problem would be finding such a source that would so accurately curve light so that the earth would be conveniently right within view, and the other half of the problem would be magnifying, filtering, and distorting the light to get an accurate picture out of it.
I know I'm talking about rediculously high resolution here (even within the earth's orbit, you're lucky to get a resolution less than a meter taking pictures of the surface), but since I'm assuming a time where problems with optical lenses have been done away with by much more complex technology is there any other reason why it wouldn't be possible to see the surface of the earth, light years ago? (Depending on the distance from the supermassive object.) freshgavin ΓΛĿЌ 07:05, 11 May 2006 (UTC)
recently,i have undergone a lot of religious fastings which lasts for more than 8hours/day.In such a case,how come my body does'nt produce HCl and start digesting the walls of my stomach?
thank you
what is the difference between color of light and color of pigment?
--thanks!
can stress actually lead to miscarriages in pregnant women?
ok, i know this may sound something of an essay question, but its not, i'm a uni student and any kind of help would be great, even if its just what to search for as every obvious thing i have searched for has not come up with the answer i am looking for. what would be the effects of pressure on coordination in the human body? thanks skye
First, is there a RD:Wikipedia? I think that having it at the top of the RD page would be nice. Second, is there a proper way to archive talk pages? -- Kainaw (talk) 12:43, 11 May 2006 (UTC)
thanks heaps
I've changed my default media player from windows to Jet Audio, but the Icon still remains as windows media player. How can I convert it to Jet Audio Icon? mp3 files are played via jet audio,.but its icon is media player !!
Does the sparkling of a diamond and twinkling of stars have anything in commom?
thanks a lot
OK, I realise this is a minefield. I've read Apple evangelist, Operating system advocacy and others, and they don't really address my question, which is: what is it specifically about the user interface that Mac users find preferable to Windows? Do they think it's easier to find, copy, rename or delete files on a Mac, for example? To switch between open applications? Do they find the Mac's Dock easier to use than the PC's taskbar, and if so why? I'm not interested in issues such as speed, security, architecture, etc. Just these kind of user interface issues. As an example, someone once pointed out that the menu list across the top of the screen is easier to use on a Mac because it's right at the top of the screen, so you can slam the mouse up there and just hit it, whereas with Windows you have to point to it more carefully because there's that blue line across the top. That's the kind of comparison I'm interested in. And by the way, I'm a Mac user myself :) -- Richardrj 14:00, 11 May 2006 (UTC)
This was a question that came up on rec.pets.birds a while ago (I found it interesting anyway). Umbrella Cockatoos have a reputation for being vicious, ill-tempered, quarrelsome and generally 'difficult' birds. If one of them was to go up against (arguably) the UK's most vicious, ill-tempered quarrelsome bird, the Great black-backed gull in a fight - which one do you think would win? Like with the man/bear Q. above, assume that there are no outside variables and neither bird was intimidated by the other's posturing, i.e. they both just got stuck in and the feathers started to fly - just a straight one-on-one fight until one of them couldn't fight any longer. -- 81.79.226.227 14:12, 11 May 2006 (UTC)
Please I search for Program(software) to translate text from Arabic to English ?
What is the point in an autogeneic bone marrow transplant? Could you use this for leukemia, returning only the non-cancerous stem cells? -- Username132 ( talk) 16:15, 11 May 2006 (UTC)
The bone marrow transplant article says "To cryopreserve HSC a preservative, DMSO, must be added and the cells must be cooled very slowly in a control rate freezer to prevent osmotic cellular injury during ice crystal formation." but I think slow freezing promotes crystal formation. -- Username132 ( talk) 16:30, 11 May 2006 (UTC)
In general, slow cooling leads to a small number of large crystals, while rapid cooling leads to many tiny crystals. However, based on the previous answers, this is not true in this particular case. StuRat 19:26, 11 May 2006 (UTC)
In the image on the right, what does the line going up with the two dots mean? Thanks, K ilo-Lima| (talk) 17:00, 11 May 2006 (UTC)
The correct term for the shape of the molecule is pyramidal. The electron pairs dominate the repulsions, and the tiny H atoms are insignificant in this respect. So the short, fat lone pair repels the longer, thinner bonding pairs (each with an H atom at the end) more than they repel each other, forcing the three bonding pairs slightly inwards to an angle of 107 degrees. The electron pairs can therefore be described as having a distorted tetrahedral geometry, but the molecule is pyramidal. X-ray data will not show up the lone pair - it is not part of the shape of the molecule itself. G N Frykman 21:26, 11 May 2006 (UTC)
Hello,
I will be very greatful if anyone could draw the flowchart for the manufacture of DDT for me. Thanks ----------
How much data is exchanged on the public Internet daily? 134.215.197.210 19:26, 11 May 2006 (UTC)
On my old bike I'd change gear and it would always take ages for the chain to move across and I'd get a constant clickety sound. Even when it moved over, it would sometimes carry on clicketing like it wanted to be on another sprocket. Why?
Also, on dutch omafiets, the chain is usually covered by some fabric thing - what's that about?
At what minimum speed must a roller coaster be traveling when upside down at the top of a cirlce if the passengers are not to fall out. Assume a radius of curvature of 9.6m.
I've done this about 5 different ways and gotten different answers each time. The example below is one I think may make the most sense....I don't have the answer to this problem so if someone could verify whether I got it right or not. Thanks.
C-c-c-c 20:54, 11 May 2006 (UTC)
i recently read in news scientist that there was a piece of US legislation that forced car companys to make there cars more effiecent at 55mph, ie the sweet spot where the cars runs the most effiecently, now is there a similar law in the UK and if so whats the speed? Colsmeghead 21:15, 11 May 2006 (UTC)
I am seriously confused about some key elements in this process. First when water undergoes electrolysis then can the oxygen mix with the hydrogen without turning back into water and if it can why cant that gas be used in cars?
what are the big differences between a software engineer and a computer programmer?-- orphan frequently 03:21, 12 May 2006 (UTC)
well, yes, i could have told you that, but i mean actual work wise.-- orphan frequently 03:21, 12 May 2006 (UTC)
haha, i have to come up with three careers for a project, anyone got another name, technical director maybe?-- orphan frequently 04:06, 12 May 2006 (UTC)
My knowledge of using arrays in Javascript is pretty weak. Basically, I want an easy way to fill out an array with, say, 10 numbers, from 0-9, in a "random" order. So a few possible options would be...
Every number is used once. Now, just to add a little more complication, I'd like to be able to do this for n amount of digits (I did it for 10 up above, but it would be nice to be able to use the same function for 11, or 12, etc.). In every case I will be using the digits from 0-n, and will want each one to be used exactly once.
Is this a foolish desire? Is there an easy way to do it? You don't have to do all the work for me, but pointing me in the right direction would be fine. -- Fastfission 05:29, 12 May 2006 (UTC)
Declare MyArray of n+1 elements For i = 0 to n MyArray(i) = i Next For i = 0 to n Temp = MyArray(i) RandomElem = int(random(n+1)) MyArray(i) = MyArray(RandomElem) MyArray(RandomElem) = Temp Next
RandomElem=i+int(random(n+1-i))
n = 10 // number of elements desired r = 50 // random numbers can be from 0 to (r-1) randarray = new Array(n); i = 0 // temp counter while (i < n) { randarray[i] = Math.floor(Math.random()*r); // Math.random() produces pseudo-random number between 0 and 1 i++; } // randarray should now have random number elements.
is silicon oil bad for baby skin?
Baby no longer slippery? Maybe the first signs of rusk? What he (or she!) needs is oiling! But forget cheap silicone oils. Buy Baby oil. Babies just love it! Baby oil. Available at all good corner stores.
has the world really been warming over the past 20-30 years?what are the consequences?
thank you
People have said that you can ride an exercise bike that is properly equipped, and by doing so you can pour energy into the system and get reinbursed by the electric company. They even say that if you pour in more energy than you use, the electric company has to pay you money. Sounds cool, does anyone know how to go about doing it, if it is possible. Thanks, Ch u ck (척뉴넘) 07:54, 12 May 2006 (UTC)
What is the modern name of Astrophyton darwinium? Googling for the species name returns zero results (you get a few more on just the genus "Astrophyton"). The creature features prominantly on plate 70 in Ernst Haeckel's Kunstformen der Natur (1904) (see the Commons page for all the beautiful plates). The name is shown in the associated text [40] if you want to check it for typos, or if you can read German and want some clues. Note that Haeckel himself is the authority on the name. Any help appreciated. It's been bugging me for a while. (Note that Wikipedia's article on Astrophyton is for a genus of cacti, and not basket stars) — Pengo 07:56, 12 May 2006 (UTC)
Can I get a detailed explaination of observations accompanied with the Supernovae(like mag, and explaoination of types, naming etc.)? Contact : [email removed for spam prevention]
Can I get a detailed explaination of the observations accompanied with the finding of Supernovae (like the value "mag", and explaination of types of Supernovae, naming etc.)? Contact : <Email Removed>
which of the following 3 bombs, kills only humans(living organism) but has little effect or damage on buildings & other properties? A. neutron bomb B. Hydrogen Bomb C. Atomic bomb --the preceeding unsigned comment was added by 196.200.102.42 at 10:32, 12 May 2006
I'm not sure if "frequency ramp generator" is the right term, but I need to build a circuit that produces a signal output whose frequency increases linearly as a function of time. Using a function generator and op-amps, transistors, timers etc, is there a simple way to build such a circuit? Thanks. - Wiccan Quagga 12:24, 12 May 2006 (UTC)
I came across the following sentence: "If a constant killing radiation were endured, all living animals with dividing cells would die."
Logical follow-up: are there animals that do not have dividing cells? Are they short-lived? 194.151.6.67 12:41, 12 May 2006 (UTC)
( Ταλκ το mε) 14:01, 12 May 2006 (UTC) Keith Richards -- Zeizmic 14:21, 12 May 2006 (UTC)
Don't forget red blood cells. They have to be made in the bone marrow because they can't divide on their own. Jonathan talk 14:18, 15 May 2006 (UTC)
Is it possible to burn Real Player video files (.rm) to DVD and watch them on TV through a DVD player? -- Richardrj 14:59, 12 May 2006 (UTC)
What's this about oval orbits? I mean, most people can visualise an object moving uniformly in a straight line, unless there is an external influence. Why is it that all orbits are not perfect circles? If an object is moving away from the point of gravitational infulence and there is no friction, (no friction in space, right?) it will tend towards the straight line. Surely the gravitational influence is weaker the further the object is aways from it? Why does it reach a plateau and return (and gain velocity)? I'm not sure the analogy of a rubber blanket, (gravity influencing from below), with balls rolling around a heavier ball makes sense here. What have I missed?
Note that an ellipse is not the same as an oval. Ellipses, parabolas, and hyperbolas are conic sections, while an oval is a vague term that can mean many things. StuRat 16:52, 12 May 2006 (UTC)
While the equations prove to him that it's true, I don't think that's going to help him visualize why orbits don't all become circular. Instead of thinking about circular orbits, think of the way things fall back to earth. If you throw something up at an angle and let it drop down (lets pretend there's no air, and no friction), it follows a parabolic path, not a circular one. If you threw the object really far up, so far that on its decent back to the earth it would actually miss it (go over the edge, in a manner of speaking), the parabolic curve would continue around the earth and after a while it may end up in a regular elliptical orbit. Sure the farther the object is the weaker gravity is, but if the object is moving slower than the escape velocity at that point, it won't plane out into a straight line, and it will eventually fall back. In fact, it must be quite difficult to achieve a circular orbit naturally; the object must be travelling at a 90 degree angle to the circumference of the planet and at the exact speed to keep it stable at that height. freshgavin ΓΛĿЌ 17:13, 12 May 2006 (UTC)
Many thanks Guys. —The preceding unsigned comment was added by 82.24.122.46 ( talk • contribs) 00:15, 13 May 2006 (UTC)
Hi!
If a food stuff has a water activity of 0.70, then it would have an equilibrium relative humiditiy (ERH) of 70% (right?!). But to keep this constant, what ERH would it need to be stored under?
Thanks!
does psoriasis spread to infants below 3 months of age. is it contagious. does it leave scars which is long lasting. can it be treated by medicine.
Try psoriasis and relax a little. I'm fairly sure it isn't contagious to anyone. Skittle 18:16, 12 May 2006 (UTC)
Can video conferencing increase productivity in meetings? I'm looking for research or testamony.
During a conversation with a friend, we were trying to figure out how you'd answer the topic question. I think you find out your current latitude and longitude; add/subtract 180 to/from the longitude and just flip the latitude north for south; then find out what's at those new co-ordinates. Do we have our algorithm right? -- LarryMac 19:04, 12 May 2006 (UTC)
IF the universe is expanding constantly, but, according to the laws of thermodynamics energy cannot be created or destroyed, only converted tfrom one form to another, then won't the universe eventually "run out of energy" as such. For example, once the universe gets a whole lot bigger, the energy which exists currently will have to be shared amongst the huge, and still expanding universe, therfore the energy available to us will eventually become limited, thus meaning we need to search elsewhere in the universe for energy? no? Or that the possible systems nearer to the end of the universe than we are will have little energy thus collapse?
On a cosmological scale, there is no conservation of energy. As the universe expands, new energy is pumped in. We actually will eventually run out of free energy, but not just because the universe is expanding, rather because of the particulars of its rate of expansion. - lethe talk + 03:51, 13 May 2006 (UTC)
You're talking about the heat death of the universe. It wont happen for a long long time after our sun burns out and swallows the Earth, but it's proposed that it will occur one day. — Pengo 11:06, 13 May 2006 (UTC)
Hi everyone, need some quick help with this. Where exactly does Windows record all the websites you go to (is it .doc or .dat or what?), how, if possible, can I read the file, and is it possible to delete this without erasing all the data in the hard disk? Thanks a lot!
when ever i go drinking i always end up yawning, nedding to wee alot during the night out and go for a number 2 alot the next day. are these all realted to alcohol comsuption, if so what causes if and is there any drinks which would have less of an effect
Plus, when you go out drinking, you consume alot more liquid than you normally would. You're just becoming aware of that fact from your frequent bathroom visits. Pretty simple actually. - R_Lee_E ( talk, contribs) 05:51, 14 May 2006 (UTC)
Is there any software I can run on my laptop, so that it emits a loud noise at a set time? Preferebly open source- googling didn't help me very much :( 138.237.165.140 23:03, 12 May 2006 (UTC)
Does anyone know if any extrasolar planets have been discovered in other galaxies? —The preceding unsigned comment was added by 205.157.110.11 ( talk • contribs) 23:05, 12 May 2006 (UTC)
When you throw a ball against a wall (for example), it has to travel half way, then half that distance and then half that distance again. If you carry on dividing the distances an infinite number of times, the ball will never hit the wall I would be most grateful if someone could help my poor animal brain conceptualise why this idea is wrong. It seems to me that balls DO hit walls (or don't they?). Many thanks and kind regards. Frecklemad
The Special Theory of Relativity says that nothing, not even immaterial influences, disturbances, and signals can travel faster than light.But then, how come I've heard that there are subatomic particles in the world called tachyons which can travel faster than light? User:Bowei
I have been trying to Google to find out if anyone has swam across the Atlantic. All I find are pages and pages of some fool at Opera who said he was going to do it and didn't. I'm sure someone has swam the Atlantic - I remember seeing a documentary of a woman swimming in a cage (to keep the jellyfish away). Is that a false memory or did she actually do it? If so, who was she (and where did she swim from/to)? -- Kainaw (talk) 03:50, 13 May 2006 (UTC)
HappyCamper speaks of " Lake Ontario, which I think is a lake in Canada". Kind of hope that's a joke. If not, or for anyone who doesn't know, Lake Ontario is partly in Canada, and partly in the United States. -- Trovatore 20:12, 13 May 2006 (UTC)
If you ask me, I have no trouble believing that HappyCamper was only vaguely aware of a "Lake Ontario", and even less vaguely aware that it was (partially) in Canada.
Reminds me of a story I heard. Some high school in Missouri was entertaining the thought of teaching foreign languages to their students. The idea was shot down. The parents were adamant: If English was good enough for Jesus, it's good enough for us! Loomis51 04:07, 16 May 2006 (UTC)
Dear Madams / Sir,
I find no article on "backward walking" in the Wikipedia, do you think some experts can contribute to writing an article on this issue?
Thank you very much for your kind attention.
Cheung-shing YEH
I basically have 2 questions:
-- Seejyb 10:19, 14 May 2006 (UTC)
When we see or look from the earth to the sun & moon, is it in every 15 years, 17 years or 19 years their visual movement meets at the same date & day?
For multiple choice questions, when in doubt, choose "C". I'd therefore guess that the answer is 19 years although I too have no idea what the question means. Loomis51 11:25, 17 May 2006 (UTC)
I was recently told the World Health Organization has published a formula for people to mix up a homemade version of Pedialyte to help replace fluids and electrolytes for babies, especially when the babies have been having diarrhea. Can you tell me what that formula is?
The caveat about recipes for ORS is that studies have shown that a large proportion of ostensibly literate mothers in developed countries cannot follow a simple recipe so that concentrations are within 20% of intended. The premeasured envelopes are not foolproof but safer. alteripse 02:49, 14 May 2006 (UTC)
If blackholes exert an attractive force on light, what effect do they have on the speed? Thanks guys.
-Timothy
Is there an easy way to reverse engineer a SHA-1 digest in Java? I am trying to construct the info_hash for the bittorrent protocol but what I'm creating doesn't match what I see when I open the torrent file in Azureus. Thus, I would like to see what string is being hashed so that I know what I should be hashing. For the record, I'm hashing the entire [d6:length...e] bit after "info", which I've been told is the correct way. Remy Suen 15:17, 13 May 2006 (UTC)
Servers are always left on overnight, and many people leave their desktops on too. Are notebooks different enough that this practice should be discouraged or not performed at all outright? Remy Suen 15:17, 13 May 2006 (UTC)
I collect autographs. I have a letter from the Rockefeller Foundation dated Nov. 4,1953 thanking a lady for wanting this autograph as an outstanding citizen, it is signed M. Theiler. Who is M. Theiler, and what did he contribute perhaps to science or humanity? Thank you, Linda
Any information would be greately appreciated especially on his biography.Thanks
Hello,is someone ( or maybe Wikemedia itself) planning to releases DVD's of wikipedia? If not, then why not....because it would be a good idea to promote it this way also!
There are people working on this, but it's a tough job to really police everything that will go on a "fixed" version. See Wikipedia:Version 1.0 Editorial Team. -- Fastfission 19:18, 13 May 2006 (UTC)
How can I transform a regular telephone handset (such as this -> Image:Phone handset.jpeg) into a mobile phone " handsfree" kit (of course it would not free one of your hands, but you get the point), connectable through a 2.5mm subminiature jack. Perhaps this is not so relevant, but the handset uses a regular RJ11 jack, with four cables (Black, White, Green, Blue) and I intend to connect the 2.5mm jack into a LG mobile phone. Afonso Silva 20:25, 13 May 2006 (UTC)
Thanks people! And thanks Seejyb for the website, it seems that my ideia was correct, hehe! I'll have a thing like that, so cool! Cheers! Afonso Silva 11:02, 14 May 2006 (UTC)
If a body attached to one end of spring executing simple harmonic motion(SHM) on friction less horizontal surface then how to derive the formula of time period T of this body-- 86.62.206.4 03:20, 14 May 2006 (UTC)
Thats good article but "how to drive the equation of time period i.e T=2π--"will u explain this only-- 86.62.206.4 04:29, 14 May 2006 (UTC)
Since these tend to come in standardized sizes, 468x60 for one, wouldn't it be really easy to block them all by instructing a browser to not load all images of those specific dimensions? I dimly remember a program called Webwasher which offered this function, but most web browsers and popup blockers do not. Is there any reason why this option isn't as widespread as it should be? -- 61.6.59.73 05:27, 14 May 2006 (UTC)
If you took that approach the ad vendors could react by just varying the size slightly, say to 467x60. Thus you would be fighting a moving target. StuRat 11:09, 14 May 2006 (UTC)
You are provided with 10 small identical pellets with each of mass about 0.5g and volume about 0.8 centimetre cube. Describe an experiment how you will determine the density of each pellet as accurately as possible.
How does the supercruise function work in a jet engine?
Here we go - yet another bird question... :)
It's been really hot and sunny here recently and I have noticed that my local gulls have been hanging around on the flat rooftops nearby soaking up the rays. There is one particular factory roof that I pass every day that is made of sheet metal (aluminium?) and painted black. From my basic understanding of high-school physics, dark objects basically absorb the sun's light energy and radiate it as heat, right? So, after a few hours of continuous direct sunshine, a black rooftop would become incredibly hot to the touch, right?
If this is the case, then how is it that the gulls are able to perch on the roof for extended periods of time without showing any apparent discomfort? Some of the birds were even sat down, napping and didn't seem bothered by the heat rising up from beneath them in the slightest (in fact, they looked pretty content with life). As an experiment, I placed my hand upon a black car nearby and timed how long I could hold it there - it wasn't long and my palm was red raw afterwards (it was a *very* hot day).
How on earth do the gulls avoid burning the skin on their feet and general heatstroke? The obvious answer would seem to be that 'gulls are physically tougher than humans' - but can anyone be more specific? -- Kurt Shaped Box 07:19, 14 May 2006 (UTC)
Another couple of gull-related questions that have been bugging me for ages (I like gulls, what can I say?)...
1. It's an oft-quoted 'fact' that gulls can drink salt water with no ill effects. I watch gulls a lot and I have never seen them do this (they like to drink from puddles of fresh water). I can understand that they might *prefer* fresh water and drink it over salt, if available - but if they can drink it, what mechanism do they use to remove the excess salt from their bodies? Gulls do not have the tubenose desalination systems of fulmars and albatrosses.
2. Can gulls unhinge their lower jaws like certain snakes do when swallowing large items of food? This is an argument that has been on a slow boil on a mailing list I'm on for the last couple of weeks now. They can certainly open their mouths *very* wide but photographic evidence is inconclusive.
Thanks for your help, guys. :) -- Kurt Shaped Box 07:37, 14 May 2006 (UTC)
Why is it that humans decompose only after death? Why can't the fungi, bacteria, etc. attack and decompose you when you're alive?
For the record, decomposition does not require bacteria, fungi, 'etc. When someone dies, the lack of oxygen replacement in the blood stream means that muscles cannot "reset" actin-myosin binding, and thus the person enters what we call rigor mortis. A person comes out of rigor mortis about 24 hours later when those bindings disintegrate (for reasons I am not aware of off the top of my head). But again, none of this requires any action by bacteria/fungi. Raul654 19:42, 14 May 2006 (UTC)
what is the meaning of the word "symmetrical monodisperse architecture"?i tried searching in wikipedia but couldnt find the meaning.any help would be appreciated.
thanks
is the nile river still the longest river until now? If not, which is? Thanks. Carlrichard 10:25, 14 May 2006 (UTC)
why is the convex lens a diverging mirror ? why do the rays of light donot converge in it?
What's this. I'm not sure of the spelling but I think it should be a measuring unit.And it should be connected to gravity somehow.
Are breeds in domesticated animals analogous to races in humans? I suspect that because a breed is characterized by a higher level of inbreeding, and races are poorly defined, they aren't. JianLi 14:23, 14 May 2006 (UTC)
All analogies have correspondences and non-correspondences unless they are identities. The validity is usually determined by the context and purpose of the analogy, which you have not provided. Therefore the correct answer is "yes and no". You are welcome. alteripse 14:25, 14 May 2006 (UTC)
Hm...I mean "are they similar in terms of intra-group genetic variability and inter-group genetic overlap." JianLi 14:42, 14 May 2006 (UTC)
Much better question. Much harder too. I think there are some analogous features. Both animal breeds and human races are usually identified by the distinctively recognizable association of a relatively small number of aspects of external body appearance. I am guessing that breeds of dogs or cats differ in a relatively small number of genes that mainly affect timing and duration of action of various body part genes ( evo devo) and I suspect these genes play little part in human racial differences, which depend more on the statistical association by geography of minor polymorphisms of genes for aspects of skin and hair development. Note that "purebred" is a socially-defined term with respect to animals and requires pedigree information. Analogous concepts with respect to humans are also purely socially defined and have little biological meaning except as a statement that the last 2-3 generations of your ancestors originated from the same small geographical area. alteripse 15:06, 14 May 2006 (UTC)
I think it also depends on at what level races or breeds are defined. The main "races" of humans are so large in comparison to the whole population that it's easy to be "pure" Asian or white or black, even though there is a large amount of intermixing within each group among the various sub-groups. And all races have undergone basically the same selective pressures, while artificial selection for animal breeds is much more varied, depending on the whims of the humans who create the breeds. JianLi 15:13, 14 May 2006 (UTC)
The so-called "purebred" dog breeds tend to represent a very high level of inbreeding, so probably show a low level of genetic variation. I would draw a rough analogy to the royal families of Europe that – at least until recently – represented a fairly small population that didn't interbreed much with outsiders (at least, not officially). With both purebred dogs and royal families, one tended to see a much higher incidence of certain genetic disorders.
Drawing a general conclusion about much larger populations of humans (or dogs, for that matter) is much riskier. Human groups that originated with a small number of founders tend to be more genetically uniform, though again this depends on the degree of interbreeding that has taken place with outside groups. For instance, some research suggests that half of all Ashkenazi Jews originated from as few as four women, based on studies of mitochondrial DNA. TenOfAllTrades( talk) 15:24, 14 May 2006 (UTC)
I was working in the laboratory and accidentally got some stains of brady's reagent on my lab coat. Please how do I get it off?
I mean i wanna Ask why can't there be any alien species in this universe... Tell me-----
By the above asked questions i believe that you all must be convinced that such can happen. We humans need Oxygen but Oxygen is not the sole need for some other race, right! So, there can be an existence of Aliens very well...
And mind you if any Alien species do visits us we need be very very cautioned becuz. if these species is able to visit any other planet by help of spaceships then they are really more than 500 years advanced than us.... They are a type of biggest threat to us and may b having instant destruction weapons to end us!......
my Dr. has told me I have a very high CED count on a blood test he has done. He said it has to do w/ inflamation, and this is what is causing my pain. He is trying to find a Rumatolagest who will accept Gateway INS. I have no idea what any of this means. I know I have arthritis of the spine. What is CED count in blood? What does all this mean? Thank you, David C. Shoenfelt
What is the name of the volcano erupting in Asia? I would prefer it if someone would paste this section on my my talk page to make it easier for me to find, but I also have this page on my watchlist. Thanks. Robot569 15:56, 14 May 2006 (UTC)
Back at school the other week we were talking about photography and fixing agents and such in Chemistry, and I stated to the teacher that I had heard, from some TV program or another, that the first fixing agent was discovered by accident, so to speak. An unsuccessful photograper/scientist (in the sense that his photographs kept on developing and eventually were all black) had been mixing around chemicals trying to find a fixing agent. Being unsuccessful one day, he decided to quick working and placed his bottles of chemicals and a picture or two in a cupboard. The next morning he found that a bottle had fallen over during the night, spilt a substance onto a picture, and voila! he had a fixing agent. My chemistry teacher was quite intrigued, and asked me, just out of interest, to research the story. I went on to Wikipedia, and because I didn't know the name of the particular scientist or photographer, found it extremely hard extracting the information. Does anyone know who the person was, and the exact details? Is the story even true? Many thanks -- Zooba 16:09, 14 May 2006 (UTC)
I have a bit of a problem here. I have an external Hard Drive of my own creation. It's a normal Seagate 80GB in an aluminum enclosure, which I purchased. I connect it by USB 2.0 to my computer. Recently it has been moody and refused to turn on sometimes. That problem seemed to work itself out and now it turns on fine. The problem comes when I plug it into the USB port on my computer. Windows knows I plugged something in, as it makes the device found sound and the icon appears in the task bar. When I go to My Computer it is not there and any program that can access a disc drive crashes when it looks for devices. The only way I can think to fix it would be a reformat, which I would rather not do. Any suggestions would be appreciated. -- yaninass2 | talk 17:55, 14 May 2006 (UTC)
Apparently it is Windows fault. I popped in my trusty Knoppix DVD and the External worked fine. I just assumed it was a hardware problem. Now to find a way to write to the External from Knoppix, since it doesn't seem to want to. -- yaninass2 | talk 18:37, 14 May 2006 (UTC)
The External drive is in FAT32 already, as I use it with my home Linux box. The permissions are probably wrong, but I don't have much experience with permissions in Linux and even less in KDE. -- yaninass2 | talk 18:55, 14 May 2006 (UTC)
chown
to change ownership. It's probably a problem with how you mounted it; you should check /etc/fstab.
Isopropyl
18:59, 14 May 2006 (UTC)If I have the drive plugged in, the System Properties will not even open, let alone Device Manager. If I open Device Manager and then plug the drive in, it shows up as a USB Mass Storage Device. If I try to open its properties, Explorer freezes until I disconnect the drive. It gets better and better. -- yaninass2 | talk 20:07, 14 May 2006 (UTC)
My entire purpose for using the external is so that I can save all my important data to it before I reformat my main Hard Drive. This Windows installation has logarithmically declined in usefulness and stability. The problem seems to run deeper than just the External HDD and I need a reformat and reinstall but I would like to save my stuff. The hardware is apparently fine, as it all works in Knoppix. "Hard drive of my own creation" means I took a normal 80GB EIDE Seagate Hard Drive and put it in an aluminum enclosure with USB2.0 functionality which I purchased. Thanks for all your help so far. It is much appreciated. -- yaninass2 | talk 23:41, 14 May 2006 (UTC)
Voltage is AFAIK, simplified, the difference in energy levels between bodies. Can one claim that earth's body has a certain level of voltage? Perhaps by comparing it to other bodies in space? Thanks in advance, hope this isn't too far from reality. 213.161.190.228 09:59, 15 May 2006 (UTC) Henning
I'm pretty sure I have OCD.
Everytime I go out with friends, I keep checking my pocket each minute to make sure the cell phone is there.
When I lose my pen, I look for it under the couch, and I don't find it. Then I get up, go look under the couch again, and I don't find it. So I repeat 2 more times, thinking that it will suddenly reappear. But of course it doesn't.
What do you guys think? OCD or not? Thank you.
Do the vitamins and provitamins in shampoos actually do your hair any good? Don't they just get washed down the drain when you rinse? User:Zoe| (talk) 21:38, 14 May 2006 (UTC)
Why does it have peanuts? A Clown in the Dark 21:47, 14 May 2006 (UTC)
Why is there always babies in your vomit, even when you haven't been eating babies? Many people have told me (urban legend?) that what look like pieces of infant are actually chunks of stomach lining. Anyone have an educated answer?
There are two types of vomit: if it comes back from the stomach directly, it will not be having bile and the yellow discouloration is the color of the stomach juice... but if the vomit comes from the intestine, and this usually happens, then, yes it contains bile; as bile doesn't get poured on ingested food exept in intestine...... and for the carrot pieces, there are not so, it is just the remnants of the yet not fully digested food.
What does it mean to have a " poster presentation" or " paper presentation" ? Thanks in advance 23:47, 14 May 2006 (UTC)23:47, 14 May 2006 (UTC)23:47, 14 May 2006 (UTC)23:47, 14 May 2006 (UTC)
Do the raw berries of the coffea plant contain caffeine? What do they taste like? Can you make juice out of them? — Keenan Pepper 00:01, 15 May 2006 (UTC)
If a curve with a radius of 70m is pefectly banked for a car traveling 60km/h, what must be the coefficient of static friction for a car not to skid when traveling at 90km/h?
I don't know what they mean by "perfectly banked", is this the maximum speed with which there is sufficent friction force? Another possibilty? How would you go by doing this problem? Any thoughts? Thanks. C-c-c-c 04:17, 15 May 2006 (UTC)
I would like to have a fiddle around with a database (in Access format), but I don't have any data. So, are there any databases available online? Preference would be to those related to human-related (ie health, psychology etc). Thanks! 153.111.60.15 04:21, 15 May 2006 (UTC)
Hi, sorry to bug you guys...I'm not sure how to report an error on a page, so I'm using this feature...I guess it's kind of a question.
Anyways, I was looking at the entry for "blood charts". I am no expert in this area, and actually often have trouble remembering how the whole blood type thing works. So I was looking at the two charts for Donors/Recepients...and the two charts contradict each other completely.
So, I'm wondering what it is for AB blood types: Are you able to donate to anyone, or can you only receive from anyone?
Thanks!
If someone intercepts a https transmission, without cracking the encryption, can they figure out:
Why are leaves not black? For all the awe that advanced photosynthesis inspires, it seems counter-intuitive for leaves of plantlife to be any color other than black. Why are they reflecting away that valuable green light? -- Demonesque 10:36, 15 May 2006 (UTC)
Are there certain kinds of bacteria or viruses that are immortal?
thank you!
gracy,13
This article uses the phrase 'effectively immortal'. [55]. You could also use the phrase 'philosophically immortal' to describe bacteria which constantly split, so that they never actually 'die'. They may split so much, however, that no molecule from the original still exists, but what the hey.. -- Zeizmic 12:53, 15 May 2006 (UTC)
most things do die after reproducin its just that they leave another generation to continue their species and nothin else and comin to the question of immortality .......wen an organism is born on earth it is bound to die .that simply answers the question.
Use Newton´s laws how to acheived terminal speed to free falling objects?
Or, let's try and look at it from the point of view of Newton's laws. I was hoping to talk you through it, so you could do it yourself. At terminal velocity, the object isn't accelerating any more; it is at a constant velocity. I think it's the first law that tells us what being at a constant velocity means as regards the forces on the object. Look at that and have a think. Then come back here, say something, and we'll keep going. Skittle 18:05, 15 May 2006 (UTC) terminal velocity is nothin but inertia.-priyanka
I was recently thinking about my habit of leaving my home computer running 24/7. It serves no purpose really, especially since it only takes about 45 seconds to completely boot up, and it's not doing anything terribly important when I'm not using it. Still, I feel an urge to leave it on all the time, to the point that I get uncomfortable if I know it's not running.
Afaik, the only real benefit of leaving a computer on is in preventing thermal creep which can cause premature failure, but I end up buying myself a new computer every 9-12 months anyway so it's not like i'm worried about that. Am I too attached to my computer, and is this some sort of way of anthropomorphizing it by keeping it 'alive' all the time? I must not be the only one who acts this way, are there support groups available? -- Jmeden2000 16:05, 15 May 2006 (UTC)
There are 8766 hours in a year. Let's say your computer, excluding monitor, uses 200 watts=0.2 kilowatt.
My electric bill says I'm paying $0.11430 / Kwh, (check yours).
(That's a numerical coincidence that the watts is numerically equal to dollars /per year, in my case) Let's say you use your computer 8 hours every day, ie 1/3 time. So every year you send 2/3 * $200 = $133 to the electric company FOR NO BENEFIT. In ten years, that's $1330. Let's say you own a computer for 60 years out of your life, that's $7980 over a life that you send to electric company, (not counting lost interest) FOR NOTHING. Back to yearly basis, using 1752 kwh / per year, 24-7. Let's say there are 50 million computers in use daily. ( probably on the low side, just a guess), 1752 kwatt hour *50e6 = 8.76e+13 watt hour (per year) A typical nuclear power plant, or other, is 1 gigawatt, say, so in a year it produces 1 Gwatt * 8766 hours = 8.766e+12 watt hour (per year) Therefore it takes 10 powerplants of the gigawatt capacity to power those 50 million computers. If they are used 1/3 of the time but ON all the time, that's 6.3 power plants running continuously FOR NOTHING. (except to waste resources and environmental degradation.) I started with a computer using 200 watts. Some of the latest overclocked, high end ones have 500 watt power supply, multiply above by 2.5. Plus monitor, if big CRT, left on, add 1000 watts, or whatever. Factor of 5. etc. Did that cure you? -- GangofOne 03:04, 16 May 2006 (UTC)
What are the expected next changes through evolution for man? Are there any that are slowly happening now? Are there any predictions for the future changes?
I am astonished that intelligent people can even consider the proposition that "evolution isn't happening anymore". All it takes for evolution is (a) multiple versions of genes, and (b) some versions of some genes being associated with being more or less successful at reproducing than other versions. If you dont think both are still happening, please retake biology 101 and restrict your opinions to things you know about. I realize this sounds harsh, but good grief, people, it's hard to be polite about this degree of silly ignorance! alteripse 18:42, 15 May 2006 (UTC)
Sorry, but both of you are still making arguments that show you still fail to understand how simple the definition of evolution is: all it takes is a pool of genetic variation and a source of new variations, and differences in reproductive success of those gene variations. The population then undergoes changes in the varieties of genes expressed in living organisms. Everything else you are trying to load into it are arbitrary exclusions and special cases that show you dont grasp the basic concept, which is breathtakingly simple and powerful, and which operates in a thousand ways in the human population. alteripse 00:43, 16 May 2006 (UTC)
To answer the original question, I would expect that, to go along with smaller jaws, wisdom teeth will slowly evolve out of existence (I don't have any, but maybe that's due to my total lack of wisdom). The elimination of the appendix may also occur eventually. While not many people die from impacted wisdom teeth or appendicitis, there are some, and certainly more than those who die from lacking wisdom teeth or an appendix, so I would expect these obsolete body parts to slowly evolve away. StuRat 04:02, 16 May 2006 (UTC)
I imagine the areas we will (or are) evolve most quickly would be (in no particular order): the brain (e.g. see the controversial Flynn effect), the immune system (shaped e.g. by HIV, malaria, and other diseases), the liver (its the organ with the second largest amount of DNA dedicated to it, second to the brain. We're also producing lots of new toxins). As for more interesting morphological changes, I imagine our backs will develop new structures, as spines are pretty crappy for upright beings as they are (they seem much better suited to fish and quadrapeds to me) — Pengo 09:32, 16 May 2006 (UTC)
And, Yes of course we're still evolving. Even in the most "modern" societies evolution still occurs. Someone who gets sick just for a couple of weeks due to a genetic "disorder"—and is unable to woo a mate or look after offspring—is going to pass on less DNA than someone without the disorder, that is on average, when we talk about a thousand generations, which is the type of timespan we use in evolution talk. No one has to be killed (or fail to "survive") for natural selection to occur. — Pengo 09:32, 16 May 2006 (UTC)
Lots of junk speculation and misunderstanding of evolution in these paragraphs. For example, the business about smaller jaws, larger heads, and less hair was speculation from the 1950s based on popular ideas of aliens that still gets repeated-- there was never any science behind it. Those of you who think conscious mate selection is a big factor are missing the enormously bigger factors-- the societies with sizeable numbers of people who think like that have very low birth rates and the selection pressure exerted by that type of process is minimal. Think of humans like any other population: where is the most reproduction occurring? Perhaps the most obvious near future evolutionary trend will be a reduction in the number of people with light white skin. Another will be selection for resistance to AIDS, at least in the african population, analogous to the selection for tuberculosis resistance in the European. Finally, to illustrate how futile this whole discussion is, how reproductively successful are those who write encyclopedias and argue about evolution? alteripse 16:14, 16 May 2006 (UTC)
Phil still doesnt understand reproductive advantage and is trying to cram it into an unnecessarily small box. It means producing more offspring in the real world, nothing more complicated. People with darker skins greatly outnumber people with lighter skins and are reproducing at much higher rates, so the disparity grows each decade. Furthermore, intermarriage produces darker skins than pale white, not lighter, and the opportunities for intermarriage are rising not falling. Despite war, famine, etc, in Africa and South Asia I suspect the average human skin tone in 100 generations will be darker than the current average. Isolation and diferential selection pressures in different continents probably led to the marked color distinction to begin with, and will probably turn out to be a relatively temporary distinction in the long run (assuming the human race has a long run). Don't twist this into something I am not saying, or a complaint, just a prediction based on trends that seem quite unlikely to reverse (barring separation of the continents, reduction of travel, complete reversal of birth rates and socioeconomic status, etc). I doubt an average twenty human beings in 10,000 years will have as wide a variety of skin tones as we can current round up for an American TV commercial (unless we implant color genes or chameleon genes-- in which case green might be as likely as pale pink). alteripse 16:36, 17 May 2006 (UTC)
Hello. I have an array of strings. I need to order this array alphabetically. I really have no idea how to do this, but maybe I've headed in the right direction: can anyone tell me how to extract the strings and convert them, especially the first letter of each, into an array of chars? Any help would be grealy appreciated. Thank you. -- Chris 18:52, 15 May 2006 (UTC)
Why does fruit rot?
What is it called when an animal can change it's sexuality when it's in an environment with only one type of sexuality so that it can breed.
Thanks
-- 86.134.85.23 20:21, 15 May 2006 (UTC)
what is the lowest and highest frequencies that a sperm whale can hear, i've checked the sperm whale section but can't find anything on hearing. Thanks
-- 86.134.85.23 20:37, 15 May 2006 (UTC)
The whale song article has some info on the hearing range of other types of whale. Maybe you could download a sperm whale song and look at the frequencies present in the file, (provided the compression hasn't chopped anything significant out) I would guess that sperm whales could hear most of the noises that they produce themselves. JMiall 23:22, 15 May 2006 (UTC)
I have just finished a new concrete driveway and since spring I cannot keep it clean. Everyday i come home from work it is completely covered with what seems to be bird droppings. However, after cleaning the driveway off so my children can play on it, I sat and observed. These birds are flying overhead with what looks like a little white ball in their mouth. They glide over the driveway and drop it, splattering it all over my driveway. What is this that they are carrying and dropping on my driveway?
Thank you for taking the time to look for this answer. I have been all over and noone can give me an answer.
Brian Wardlow [email removed for privacy]
What kind of bird is it? What's your geographic location, and what sort of food is available around there that they might be carrying? Not that I personally would know the answer even if I knew that stuff, but someone else might. -- Trovatore 21:10, 15 May 2006 (UTC)
Will combining lye, amuminum foil, and water produce Hydrogen? Zoobtoob 20:41, 23 May 2006 (UTC)
Recently, the Toronto Star (Canada) had an article stating that just after the point of the Big Bang, in a trillion trillionth of a second the universe expanded to roughly the point where it now is. Given that Einstein stated that nothing can go faster than the speed of light, how is it possible for the universe to expand at a rathe that would have to be faster than the speed of light?
Also Popular Science, http://www.popsci.com/popsci/aviationspace/d1e527098dcda010vgnvcm1000004eecbccdrcrd.html
What actually happened is that space between all the things in the universe increased (was created) at a rate faster than the speed of light, the things themselves did not move per se.
The
cosmic inflation article is pretty thick with science, and it's hard to find any easy-to-understand analogies so I'll lay out this one (extremely general):
Imagine the universe as a spiderweb and at each of the points where the strands meet, there is some matter. At the beginning, the spiderweb was infinitely small, and suddenly the spiderweb expanded to about the size it is now. Since the matter never moved from its original position on the web (the fabric of space), it didn't have any problems obeying relativity and the speed of light. Essentially the only thing that changed (moved would be inappropriate) is the extent of the fabric of space.
freshgavin
ΓΛĿЌ
05:52, 17 May 2006 (UTC)
When a car has a spec like "1488 cc", what does that mean? J. Finkelstein 03:41, 16 May 2006 (UTC)
I spotted the owl in this picture a few days back, and I can't figure out what it is. It's a largish owl -- I'd guess it's standing about a foot to a foot and a half tall in the picture, with a three-foot wingspan. It was in an area of mixed pine forest, fields, and wetlands, about fifteen miles outside of Spokane. Any ideas on what it is? -- Carnildo 04:25, 16 May 2006 (UTC)
To me it looks like a young eagle owl of some kind. Don't know what country you're in. Definitely a young owl.
Could you tell me how does ddrsdram is non-volatile in construction as ram's are volatile in nature?
If I remember correctly, all transistor-based memory is inherently leaky (and thus violatile). Raul654 05:02, 16 May 2006 (UTC)
sir/madam, i'm chandan a project trainee in hindustan aeronautical limited, bangalore.i'm in need of detais of vaned diffuser design in centrifugal compressors, please do the needfull. thank you.
I need to calculate some things for a project but I need some accurate measurements for Solar radiation and average wind speeds for Newcastle, NSW.
If any of you can help, that would be great. The solar radiation levels I need in the form kWh/m²/d in monthly or daily averages if possible.
Thanks Wayne
We know that air is compressible,water is not.Then how is the concept of pressure applicable to water?In case of air,it can be pressurised in a cylinder by a piston,but not water.. —The preceding unsigned comment was added by 210.212.194.215 ( talk • contribs) 09:56, 16 May 2006 UTC.
How do non-living neural networks that can continously learn and adapt like their living counterparts work?Ex:- logic gates are fixed and perform a fixed boolean function,they cant change the boolean function by themselves to suit the environment. —The preceding unsigned comment was added by 210.212.194.215 ( talk • contribs) 10:00, 16 May 2006 UTC.
Well i would like to know with an simple illustration how does the feedback change its main function...
You know how there is different ways of learning (visual, auditory, kinesthetic etc) is there a set of questions or a app online to determine your domonent form of learning?
Why is Ibuprofen always pink in colour ? In all dosage form?
Tulsi A Shulka - 3rd year pharmacy student at Mumbai, India
how the scientists discovered that earth is spherical?
The earliest experiment to determine that the Earth was round and find it's approximate diameter was to note the difference on the angle of shadows from a fixed length pole observed at noon at two points along a north-south axis on the Earth. Observing the difference of angles and knowing the distance, it's then just a bit of geometry and trig to find the Earth's diameter. "Noon", incidentally, meant when the Sun was at it's highest point (when shadows were shortest), prior to adoption of time zones (which mess up everything). This experiment was done by an ancient Greek, Eratosthenes. StuRat 03:38, 17 May 2006 (UTC)
Wow, bad title. Anyway! I read somewhere, I can't remember where, about some kind of physical phenomena. To prove it, there was a picture of a rectangle-shaped box of plastic filled with water, seen from the side. Apart from at the sides, due to tension, the horizon of the box was flat, as one would assume. However, in the next picture, the box had been tilted slightly, and the horizon was broken off near the middle, so that the water on the higher elevation was above! Like... |_ _ _ _ ,.--------| Any help would be wicked! Henning 16:32, 16 May 2006 (UTC)
Whats the proper way to maintain a cande? Particularly one thats incased in glass. Should I scrape the sides if theres its only burning in the middle? Should I dump out the hot wax? etc.?
What exact quantity of food do they mean when they say 4 portions?
I have tried without much success to find an answer to this question. I've asked a number of people, including doctors and physicists.
Everyone knows that we run our personal carry-on belongings through x-ray devices which are said to be quite benign. My concern is with prescription medications, some of which contain organic substances. My situation is unusual in that I fly a lot, usually twice a week. So I am running these items through that x-ray device at least twice a week, sometimes more. I'm not worried about the radiation, but about possible damage to organic compounds.
Are there any studies about the cumulative effect on organic compounds of this type of exposure to radiation? Natuarlly I am just a little skeptical about swallowing drugs that might have been altered slightly due to this type of exposure. Lately, I have taken to cramming them in my pants pockets so that they are only exposed to the metal detectors, but this is not an optimal solution. ------------- 148.165.17.120 20:08, 16 May 2006 (UTC) Thanks, Far Too Frequent Flyer
find out if YOUR pills absorb THESE particular X-Rays: Next time you fly, put your medicines in one of the little trays provided by airport security, and place that separately from all your other possessions. Then make sure to get through the metal detector BEFORE your little tray comes through the X-Ray machine, and watch the screen of the operator. If you can't see your pills on the screen, they have not absorbed any radiation at all and no damage could possibly have taken place. In fact, it would even be better to remove your pills from any container or packaging, as the latter may well absorb more than the pills themselves. Once you find out, you may want to report your findings to all of us... Hope this helps you find peace with this issue. -- Michel M Verstraete 22:38, 16 May 2006 (UTC)
A human being becomes shorter in the course of a day, due to compression of the intervertebral discs. This is associated with dehydration of these discs. Now: a Daschund, sleeping all curled up through the night, compresses the intervertebral discs. While walking in the course of a day, the hanging body, curving convexly downwards and supported only at the shoulder and pelvis, could conceivably cause a distraction force between the vertebral bodies, "thickening" the discs. Does a Daschund grow longer by day, or "sag" more? -- Seejyb 22:05, 16 May 2006 (UTC)
(I posted this on usenet yesterday but no-one has responded yet. Thought that I'd try asking the nice folks here... :) )
I threw out a big pile of bread and ham for the gulls this afternoon. 'My' great black-backs came down and proceeded to chow down - carefully picking out all the pieces of chopped ham and leaving the bread untouched.
I'm certain that because I feed them several pounds of food (I have a deal with the local butcher for off-cuts, which I cook up for them, plus they get anything edible that I don't manage to get through) on a daily basis, they have realized that they can afford to be picky.
Serious question time. I've noticed that my four 'regulars' (one hand-raised by me as a baby and three others that have come to somewhat trust me) have started looking fat. They're getting very 'wide' and stocky-looking and you can see the ridge down the middle of their chests with the meat bulging on either side - in other words, they're getting to be right oven-stuffers.
I enjoy watching the gulls at close quarters but I don't want to make them lazy and unfit by overfeeding them, or make them too reliant on a human for food - do you think that I should stop feeding them completely? Is it a bad thing for a gull to be overweight? Will they actually come to rely on me completely for food and decide not to bother looking elsewhere if I continue? On the other hand, they're probably laying/raising chicks now and I don't want to do anything that could result in the neglect/death of the youngsters.
I'm a bit worried about them now. Don't laugh - I've grown quite attached to these birds now, especially the one I raised pretty much from the egg (she's grown into a huge, strong, magnificent bird now and has raised several clutches of her own chicks - yet, she's never completely forgotten me and for the last ten years has returned to nest on the rooftops near my house and hang around my garden).
Any advice would be appreciated, guys. :) -- Kurt Shaped Box 23:06, 16 May 2006 (UTC)
I recall tales of fish found frozen solid in ice, that become "alive" when thawed. I cannot find estimates of how long the creatures have been in suspended animation. Where would I look for information on this? Thanks -- Seejyb 23:20, 16 May 2006 (UTC) Think or thwim
I've been currently requesting more articles on weather instruments and the study of meteorology, however, I cannot find a couple of detailed answers to my questions. Maybe you can be of some help to me:
—Preceding unsigned comment added by 207.69.137.13 ( talk • contribs)
If you are mathematically-inclined, you may want to visit the page on primitive equations. Your second question has been adequately answered. However, your last question is meaningless because an air parcel can be saturated at any given temperature (at least within the "usual" temperature range normally experienced at or near the Earth's surface) by adding more water vapor into it. If the water content of the air is fixed, and the relative humidity (a particular water vapor measure implied by the units you are using) is less than 100%, you will have to cool the air sample to raise its relative humidity until you reach the Saturation vapor pressure. -- Michel M Verstraete 20:42, 17 May 2006 (UTC)
In what way does an 802.11 wireless repeater work? I suspect that doesn't make much sense on it's own, so: in my case I'm talking about an unwired box (specifically the Linksys WAP54G) configured act as a "wireless repeater" to another box (the same model) which is plugged into a wired network and acts as an access point. Does the repeater box act literally as if it's an extra aerial on the access point (which would be lovely), or is there a delay associated with the relay of the signal? What's the effect on performance? By performance I mean how does a client near to the access point perform compared with a client near to the repeater? I know the best answer to all wireless questions is "give up and plug some wires in" but unfortunately that's not an option here. Thanks a million. -- 87.194.20.253 05:45, 17 May 2006 (UTC)
Thanks for this. Do you know what the behaviour of a client that can "see" both the original access point and a repeater would be like? Does it choose who to receive / transmit from? Thanks again. -- 87.194.20.253 17:05, 17 May 2006 (UTC)
When reacting an alkali metal with Fluorine, Lithium has the greatest difference in electric potential and therefore will create the largest explosion, but when reacting the alkali metals with water, why is Lithium the least spectacular? Is it true that Cesium will have the strongest explosion? -- Chris 06:44, 17 May 2006 (UTC)
I have a Micro$oft Word file with _italic_ expressions represented by _underscores,_ like that. Is there some way of converting these to proper italics? I can think of several ways to do this outside Word (e.g. editing the rtf file with a text editor), but is it possible within Word?-- Shantavira 07:55, 17 May 2006 (UTC)
Hi I am trying to find a copy of this book it was produced by the W.H.O. it was a hand book on low tech machinery for developing countries our local library had a copy but someone cut the section on solar heating out of it , then someone fell in love and took what was left of the book. It had pedal powered saws and pumps , also covered methane producing digesters for small scale production. Thank you Vince Collis (vincefish.)
For a school project I need to find out how to build a paper tower out of a manilla folder. It can be held only with glue and has to at least hold 100 lbs.
You could probably make a 2 inch high honeycomb structure that would hold a spread weight of 100 pounds. If the tower needs to be a certain height, and a narrow aspect ratio, then it looks very, very difficult. -- Zeizmic 13:03, 17 May 2006 (UTC)
It's impossible to build a paper towel out of a manila folder. Ohanian 13:08, 17 May 2006 (UTC)
I once constructed a working table (capable of holding my 75kg weight) out of corrugated cardboard. It's close to the tube idea, but uses triangular cross-sectioned lengths, guled together into a honeycomb-like pattern (six equilateral triangles into a hexagon, tower made of seven hexagons in 2-3-2 formation, so 42 triangular prism shapes in total). Grutness... wha? 01:42, 18 May 2006 (UTC)
It has to be 4inces high and 4 inches in diameter
Dear sir, I have used this sie for first time. I am working with organization involved in galvanizing. I want to ask you how to remove iron from hydrochloric acid solution. Our seq. is Acid Degreaser, Hydrochloric acid, Water Rinse, Flux, Hot plate, Galvanize.
Can You please tell me how shall I remove iron from Hydrochloric Acid Solution.
Can Hydrogen peroxide treatment be used. I have found that using H2O2 give iron Oxide Precipitates which is very minute not easily pas out of the filtering media ( filter paper # 40) What i can use to filter the same.
Besides expanding, what else happens to a piece of wood in an oxygen-free room at 10000 degrees celsius? (Answer question on my Talk page ) Anonymous _anonymous_ Have a Nice Day 13:13, 17 May 2006 (UTC)
At high enough temperature the bonds will break and the components of wood would float around in oxygen free air. Ohanian 13:40, 17 May 2006 (UTC)
My cousin is suffering from staccato speech and breathlessness. Is this a recognised medical condition, if so what is the cause and is there a recognised treatment
did a leather thong stone throwing sling serve as a spear thrower thanks
It would be difficult to use a sling shot as an atlatl. alteripse 16:24, 17 May 2006 (UTC)
write down the seven base units of "system international"(SI) with their unit and symbol?-- 86.62.237.139 16:41, 17 May 2006 (UTC)
Actually, this does sound like homework. It doesn't look good having us do your work in this way, and trying to palm old schoolwork off onto us isn't recommended. A lot of this info will be in any old text or almanac; don't come here with it. Keep this page for its proper uses. Grutness... wha? 01:57, 18 May 2006 (UTC) (Da Vinci code? Feh!)
In Wikispecies you can list the species in a particular genus by the abbreviated format: G. species1, G. species2, etc. How do you do that in wikipedia?
My printer is a Canon i320 and the black ink has run out. Is there any way I can trick it into using the three colours to make black? My old Epson had either color or black, and if it had a colour cartridge it would *make* black. - Username132 ( talk) 17:34, 17 May 2006 (UTC)
In printing, one reason for K is you need to reduce the total amount of ink. Too much ink simply takes too long to dry. If you don't know exactly how much is too much, 270% is the rule of thumb (e.g. 90% C + 90% M + 90% Y + 0% K). Too much ink can lead to trouble. Good paper and slower printing may allow you to exceed this limit.
Let's say you want to print a rich black square on paper (spot color). If you only print 100% K on paper, this black square would usually be too thin to cover the paper. You need some CMY to make the 100% K even darker. Maybe you can try 56% C + 56% M + 56% Y + 100% K (total ink density = 268%).
You can also obtain a tinted black by adding a color to black. For example, 100% C + 0% M + 0% Y + 100% K gives you a very "cold" black.
It's good to use over-100% blacks. But misregistration can be a serious problem when you add colors to K. If you use C + M + Y to substitute black, you usually get an ugly muddy dark brown instead because inks are far from perfect. And a slight error in ink control would give you a tinted black.
If you know how to tweak Adobe Photoshop or similar software, you can control the amount of black to be generated by RGB to CMYK conversion. If you want to print using CMY only, just let it generate no black at all. -- Toytoy 00:07, 18 May 2006 (UTC)
why can you not hear sound coming from something inside a vacuum?thanks -- 86.134.85.23 18:21, 17 May 2006 (UTC)
is it acyually possible that the world, our universe ect. is just some kind of scietific experiment made in a lab by some kind of special race or something like that, thanks -- 86.134.85.23 18:35, 17 May 2006 (UTC)
http://www.wired.com/wired/archive/10.12/holytech.html God is the Machine, Simulated reality, http://www.simulation-argument.com/ Are You Living In a Computer Simulation? The Simulation Argument Nick Bostrom --- GangofOne 02:59, 18 May 2006 (UTC)
--Welcometocarthage
I've got a new bottle of concentrated HCl, and I'd like to know the concentration. I know that concentrated HCl is normally about 12M, but I'd like to know the concentration a little more accurately. I looked up the certificate of analysis from the manufacterer and found that this batch is 37.1% (w/w) and has a density 23.0 degrees Baume (equivalent to specific gravity of 1.1885). Anyone know how to use one of these facts to determine molarity? (This isn't a homework question!) ike9898 20:00, 17 May 2006 (UTC)
I'm trying to find the genus and species designation for the mukade, a type of poisonous centipede native to Japan. I've been unsuccessful on Google so far. Can anyone help? Thanks, — BrianSmithson 20:19, 17 May 2006 (UTC)
I want to make an azeotropic mixture of HCl and water from concentrated HCl. I suppose I can do this simply by diluting the HCl to the concentration of the azeotropic mixture (which I think is 6.102M). But I am wondering if there is a practical laboratory method to be more accurate. I was thinking that I could, for example, make up a 6M soln, and boil it in the fume hood. I suppose eventually enough water would boil off and the solution would be exactly the azeotropic concentration. No? I suppose I could monitor the temperature to know when I had reached that point. What would happen to the concentration if I made the starting concentration greater than that of the azeotropic mixture and then boiled?
(Again, this isn't a homework question...) ike9898 21:09, 17 May 2006 (UTC)
When a platoon of soldiers approaches a bridge they "break step" and no longer march as though on parade because a march in unison could resonate with the bridge and cause it to collapse. Makes sense for the wooden structure over which farmer Brown drives his cows to pasture, but are there well-known world bridges where this could be reasonably possible (for use as an illustration in a talk, not for field testing!)? How would one go about calculating this? Could one give a high school student such a project? Would he/she have to approach a University Civil Engineering dept and do high-tech computer simulations, or is it simpler than that? -- Seejyb 21:55, 17 May 2006 (UTC)
Well, the Millennium Bridge, or 'Wobbly Bridge', in London had this problem. So much so that shortly after opening, they had to close it to add dampeners and support structures. There was feedback from the slight wobble each person caused, leading other people to walk in step with them which increased the wobble. Skittle 22:04, 17 May 2006 (UTC)
There is a famous single case of a bridge collapsing due to resonance from soldiers crossing it in step, probably the Angers bridge mentioned above. This was before resonance of structures was fully understood or analyzable. It was that disaster that created the procedure of breaking step over a bridge. Note that the Tacoma Narrows Bridge collapsed not due to structural resonance, but due to aeroelastic flutter, which is resonance of a complete structure-airflow system. This is the part that is tested in wind tunnels, though we can model it pretty well these days with good rules of thumb and sophisticated computer analysis. The mathematics of resonance are not all that complicated for a simple system, once you know linear algebra, particularly eigenvalue problems, but I think it's still beyond the abilities of a high-school student. moink 20:48, 19 May 2006 (UTC)
what is the best treatment for enlarged prostate.? i have problem starting flow after ive been abed for fewhours. no problem during yhe day
thanks frank
In Vannevar Bush's 1970 autobiography, he refers to a British WWII development which he calls the " Mark X mine", which was a mine which, from his description, used sound detection as a way of "homing in" on submarines when lobbed at them as a depth charge. I've Googled around a bit and found nothing like this out there. He describes it as: "The Mark X mine was a self-propelled target-seeking torpedo. Dropped in the swirl where a submarine had just submerged, it would listen to the sound of the submarine's propellers and steer itself to run into the submarine with fatal results." Any clue what this was actually called? -- Fastfission 22:45, 17 May 2006 (UTC)
On average, what time does the sun rise and set? I don't think it matters because it is an average, but my latitude is approx 35 north. Thanks. 152.163.100.74 01:07, 18 May 2006 (UTC)
what product is formed if incomplete combustion occurs in a car engine? —The preceding unsigned comment was added by 142.165.111.39 ( talk • contribs) .
What, then, would the SG pundits consider to be the nitrogen oxide which represents complete combustion? Nitrogen dioxide only? I would have thought that the correct answer to this homework question would be simply "CO". Further questions might lead to why there are also oxides of nitrogen in the exhaust gas. G N Frykman 17:39, 18 May 2006 (UTC)
I was merely giving the answer which I was taught, and is accepted in Scotland by the exam board. We were only taught "carbon monoxide and oxides of nitrogen". It doesnt specify which ones exactly. But the question doesnt ask what ALL the products are, just to name some. And as many go beyond the scope of Standard Grade/GCSE chemistry, I believe the given answer is suitable.
Why can birds sit on powerlines? -- Mac Davis ⌇☢ ญƛ. 04:42, 18 May 2006 (UTC)
Power line electrocution is a killer for the big raptors. See this: [63] Power companies put a lot of effort into reducing the carnage. -- Zeizmic 12:23, 18 May 2006 (UTC)
Ooh! I have a variant on this question. For trains that run on electrified rails, such as on the London Underground, there is a live rail. I travel on parts that are overground and so I see pigeons perching on these rails all the time. I often think that they must come close to electrocuting themselves (surely they would only need to briefly touch the ground while perching on the rail?), and ditto for the rats scurrying around on the underground parts of the system. But I've never seen this happen. Maybe it's this thing about the rails only being electrified in the area before and after a train, or is there another reason? Carcharoth 21:15, 18 May 2006 (UTC)
For the bird to get electrocuted, the current has to enter from one part of the body (a leg) and come out of another (another leg or the wing etc). But these two legs are 'shorted' by the conducting wire and hence, the potential difference between the points where the bird holds the wire is (nearly) zero. The current flowing thru the bird's body is in the inverse ratio of the resistances of the bird's body and the conducting wire and hardly any current flows thru the bird's body. Even if a human is to hang on to one live electric wire, negligible current would flow thru his body and nothing would happen to him. But the momeent and other part of the body touches the other wires or any path to the ground, a considerable current would flow and cause death or injury. Many birds die when they sit on one wire and peck on other wire, or when they spread their wings. -- Wikicheng 07:25, 19 May 2006 (UTC)
Moved from misc.
61.25.248.86
06:37, 18 May 2006 (UTC)
In high school, I used to sleep through half of my classes, but so did everyone else, so I didn't really care. After I breezed through that, I ended up sleeping a lot in University too. That was a little more problematic, and no matter how hard I faught to pay attention during lectures, a lot of the time I just couldn't keep my eyes open, and I eventually just started sleeping in a lot and going to later classes. Even now, while working, I feel incredibly tired in the morning, though I'm almost always standing up so I don't really get a chance to close my eyes (thank god).
I may be returning to school sometime soon, and I want to work a little harder this time, but I don't know how I can get over my sleepiness.
I've never really been that susceptible to agents like nicotine, THC, and caffeine, so although I recently started taking coffee in the mornings (I don't even like it) I don't really feel the effects of it. For some reason, drinking coffee or coke at night prevents me from falling asleep, though.
I generally get enough sleep (8-10 hours on working days) but it doesn't really seem to matter because I go through the whole day yawning and rubbing my eyes anyways. I am not any lazier than most people, but I know that working out in the morning will wake me up (I've tried it). My problem with that is that I don't understand why I have to resort to something so extreme (waking up before 5am!) when most people here don't seem to have any problems, even when having only slept 6 hours. Is there some kind of perpetual sleepiness condition that I might have? Anything that can help?
61.25.248.86
03:33, 18 May 2006 (UTC)
Insist that your doctor sends you to a sleep clinic. Apparently, many doctors still don't do this for sleep disorders. There are about a dozen possibilities (types of disorders), each with a different treatment. -- Zeizmic 12:26, 18 May 2006 (UTC)
Hello, just recently i donwloaded lots of ebookz, most of them in pdf format. I found that reading from pdf files is really uninteresting. The way the pages scroll down, and everything else works is too uncomfortable for me to enjoy the reading. So is there any softwares avaliable for converting pdf files to word (".doc") files. Or alternatively, is there any way to copy all the text and images from a pdf files, as it is, to a word file? I tried to copy, but both cannot be copied simultaneously. So is there a solution for me? Thank You.
I mention (purely hypothetically, of course) that open-source PDF readers are easily available, such as xpdf. You could, hypothetically, get the source code, and comment out the places where it won't let you do things (such as print the file) based on permissions. I looked at the code once (hypothetically) and it appeared fairly trivial to find these code snippets and circumvent them. Of course if you're in the United States there's that pesky DMCA—I think the prescribed penalty is breaking on the wheel. -- Trovatore 16:26, 23 May 2006 (UTC)
I want to know how much water is in the flesh of a watermelon. Searching the wikipedia article and Google I see the figure 92% over and over again, but no where seems to say if this figure includes the rind and seeds or not. I'd like to know how much of a watermelon is water, excluding the rind and seeds. (This is to settle a bet) — Pengo 10:27, 18 May 2006 (UTC)
Is that 92% by volume or 92% by weight? Ohanian 11:10, 18 May 2006 (UTC)
NBME Question bank - STEP1 USMLE hi, i am lookin for question bank series book, that is used to prepare for step 1 USMLE exam. Can any one let me the latest edition details along with the author name. If referenced to publications then can u please let me know the publisher name.
thanks.
This might seem like a crazy question, but does anyone know whether fish produce flatuence or not?-- Bjw e bb ( talk) 18:25, 18 May 2006 (UTC)
Last week a hummingbird built a nest in my backyard and laid a single egg. The next day it was gone. My questions: How rare is it for hummingbird to lay a single egg rather than two? Can a mother pick up an egg and carry it away after she has laid it?
I've just moved into my current house, and I would like to be sure that the vegetables I am planting in the back yard will be safe for my family to eat.
Plants grow very nicely in the soil, and it is full of earthworms and other small animals. My concern comes from the fact that when I dig, I find a certain amount of old trash, and pieces of glass, brick, and concrete, and that the neighborhood, Hampden, Baltimore, Maryland, was once the home of many old industrial sites.
I have also seen among the red earthworms a few bright yellow ones, looking not unlike the worm shown in this Nature article, " Don't eat yellow worms". The article suggests that this coloration may be a sign of high levels of arsenic or copper.
What is a sensible level of caution on this question? Is there a way to find out the history of a particular piece of land? All the soil testing services I have found are for pH, nutrients, or parasites; is there an easy way to have the soil tested for contaminants or toxicity?
Thank you; 128.220.220.95 18:59, 18 May 2006 (UTC)
For city gardens, it might be best to do 'planter gardening' or raised beds. See a gardening book on this. That way you are assured of fresh, safe organic material. -- Zeizmic 23:43, 18 May 2006 (UTC)
Here's a question for all you tech people out there. If human developement is continuously improving computers, palm pilots, and everything else, why is it we are still stuck in an age where we rely on the most costly almost 80year old technology of four wheels on the ground? shouldnt we be in a more economical way of hovering either only a couple inches off the ground or couple miles above the ground and in a safe way. I know movies are just movies, but we should still be at an age where we move past prehistoric wheels?
And a question linking to the top: Why is it that oil and gas are still the dominant source of fuel in the world? Souldn't we be in an age of alternative fuels, to almost electrical technology that can allow us to constantly reuse and recharge? Thank you for your imput. -- 134.29.205.119 19:00, 18 May 2006 (UTC)
Infrastructure for production, storage and distribution of a new fuel system would be very expensive to install. Think about it: you would have to get rid of every gasoline/diesel/propane station and replace it with whatever, a hydrogen tank center or something. The fuel companies would hate that. And they would lose all their institutional knowledge. A changeover period of some years, maybe a decade, would be necessary. Do you remember when leaded fuel was outlawed in the 80s? That was a big deal for many people. This would be much more challenging. Refineries, fuel companies and governments have vested interests in retaining the current fossil fuel power method. However, cars become more fuel-efficient all the time, so every year our supply of fossil fuels will actually last longer. Vehicles also pollute in decreasing amounts with every new model. Now, if you want to become an elected legislator, and take your ideas to government, you can. There you will encounter stiff resistance in the form of lobbyists, other politicians, and just plain regular folks who downright don't like change. Change happens slowly. That's why laws like the Clean Air Act are important, because they force manufacturers to steadily improve their products. Eventually a target can be set that is impossible for an internal combustion engine to achieve, and then you will get your hovercars. But the executive has to take the plunge on that, and at present they aren't; they are actually moving back from it.-- 24.80.70.174 19:15, 18 May 2006 (UTC)
I recently expanded the diaphragm disambiguation page, but some of the terms seem to lack articles, and some other terms need someone to explain them properly. Does anyone here know enough to expand on the battery use of the word diaphragm, or the more general anatomical term found in organisms other than humans (such as bryozoans and gasteromycetes). Also, I am now confused about how diaphragm relates to septa and septa (biology). Can anyone clarify the different meanings of these terms? There seems to be a fair bit of overlap.
Oh, and I know it is not science, but if anyone knows enough about engineering and architecture to explain diaphragm wall, that would be great as well! Carcharoth 20:22, 18 May 2006 (UTC)
So hopefully someone will clear that up! THanks again. Carcharoth 01:49, 19 May 2006 (UTC)
Does anyone know where I can find a photo, or at least a diagram showing micrognathism in humans? I've been having a bit of trouble finding anything readily online. - Tim Rhymeless (Er...let's shimmy) 21:38, 18 May 2006 (UTC)
What is the size of the biggest mosquito ever? I killed one today, and want to be sure it was not the biggest available model. -- Roundedge 21:43, 18 May 2006 (UTC)
I have open on my lap this month's (that is to say, June's, because ever magazine I've ever received fell through a wormhole on the way) issue of Popular Science, and I'm looking at rather a curious article. It's centered around some of the most recent work of Hydra Biosciences, a company apparently dedicated to the dream of effective regeneration of dead and damaged tissue. My question is, what do you think of this? Does it sound like something we can look forward to in twenty years, or someone just trying to get attention? Black Carrot 21:55, 18 May 2006 (UTC)
ok, so my perental told me when you approach the speed of light time slows down. i dont understand how or why. i got the following idea: first since time is an arbitrary concept agreed upon by human(i would like to know what exactly time is if im wrong, please) say speed wasnt measured int distance/time but, oh banannas for example. so the speed oflight would be say 300 banannas, 0 banannas being completely still. as an object increases banannas time begins to slow down; so at 150 banannas "time" is twice as long(for what though? the observer or the object?) so if at 1 bananna the object traveled 6 feet at 150 banannas 1 minute would become to, but the object is still goin at 150 banannas, so now it travels 12 feetin a "minute" because it has twice as much time to travel at the same speed. pretty much i would greatly appreciate someone telling me why is it impossible to reach the speed of light, the questions in the parenthese and wats wrong with my example -- 69.140.210.163 22:05, 18 May 2006 (UTC)Artem
Let's try by analogy.
The reason time slows down is because all (chemical/nuclear) reactions slows down as light "slows down".
Ohanian
22:18, 18 May 2006 (UTC)
can someone please clarify:
what causes the mass to increase? thanks again -- 69.140.210.163 23:28, 18 May 2006 (UTC)
Question: what causes mass to increase as an object approaches the speed of light? Answer: Now assume that you are applying a constant force on an object. Remember that F = M * A You can rewrite that as F = M * dV / dt Re write as M = F * dt / dv So what you have is Mass is Force times rate of change of time per velocity. Now listen carefully. As an object approaches the speed of light, it takes longer (more time) and longer to gain an extra/additional velocity (say an additional 1 meter per second). So dt / dv becomes larger and larger. Therefore the Mass is getting larger and larger.
Ohanian 08:03, 19 May 2006 (UTC)
Unfortunately, the monkeys eat the bananas, and "banana time" ceases to exist. You should have tried apples instead. Carcharoth 00:47, 19 May 2006 (UTC)
how many teeth do sea urchins have.
Can dioxgenyl (O2+) bond with say, chlorine, to form something like O2Cl?
I seem to remember that this ion was vital in the discovery of inert gas compounds. See xenon. G N Frykman 18:18, 19 May 2006 (UTC)
In the kinetic theory of gases what is the formula of P?-- 82.148.105.112 03:40, 19 May 2006 (UTC)
P is pressure, force divided by area. See [64]. alteripse 04:10, 19 May 2006 (UTC)
So "what is this formula tells us about <1/2mv²> in the kinetic theory of gases or other formula similar to it"
Sorry, the question as asked is uninintelligible. Please restate in English and one of us may try to answer. alteripse 10:35, 19 May 2006 (UTC)
hi,
NBME Question bank - STEP1 USMLE hi, i am lookin for question bank series book, that is used to prepare for step 1 USMLE exam. Can any one let me the latest edition details along with the author name. If it can be referenced to publications then can u please let me know the publisher name.
thanks.
Since recently, we have a Venus Flytrap and a Sarracenia in our home. Following wiki-instructions from the Venus Flytrap article, I am watering them only with distilled water, and happily they seem to be doing very well (touch wood). Yesterday my partner went shopping and mistakedly brought back a bottle of deionized water instead of distilled water. Can I also use this to water them or not? Thanks for info. --JoelAbend
do we have a discussion of the "consensual" inertial frame of reference of the Universe somewhere, defined, I suppose, by the distribution of background radiation, and (possibly) by the center of mass of the Universe (which I realize may lie outside the Universe for geometrical reasons)? Are there any practical effects tied to the existence of such a de-facto preferred inertial system? Can we measure our speed relative to it? dab (ᛏ) 09:08, 19 May 2006 (UTC)
Can a fish out of water see? The refractive index of water is about 1.33 and air is about 0. That means the image shall form in front of the retina and the fish shall suffer from myopia.
How does an amphibian animal deal with this problem? -- Toytoy 09:59, 19 May 2006 (UTC)
if I jump of a plain at a height of 3.5 km. with how many speed do i fall down?
In a competitive market, the firm's price equals the minimum average total cost (ATC)How? If the marginal revenue is greater than the marginal cost, profit will increase, and vice versa. So if the MR is greater than the MC in a competitive market, why is the profit maximising level when they are equal? Dont you need the marginal revenue to be bigger than the marginal cost in order to make profit? —Preceding unsigned comment added by 192.115.60.109 ( talk • contribs) 08:21, 19 May 2006
There, some people are very nice and have helped you with your homework (a little bit). In general, companies hate this, and whine about Commodification in their business. -- Zeizmic 17:17, 19 May 2006 (UTC)
Hi all,
I'm currently inquiring into the legality of this with town council, but it may be okay, so I figured I'd do some preliminary research: how much lawn would I need to have ... actually, let me broaden the question: what are the practical considerations when looking into having a sheep as an outdoor pet to act as a lawnmower during the summer months, and having it slaughtered in the fall for winter mutton? I have a double lot, which means about 1200 feet of grazing area. Breaking this down into sub-questions: How much land is necessary to sustain a single sheep? Are sheep okay solo, or do they get bored/depressed/weird if they don't have companionship? What are the medical requirements of having a sheep... cost for a vet visit, etc.? How much does a full-grown sheep weigh? I have a very large outdoor shed that's practically unused, so the plan would be to buy a little sheep, convert the shed into a barn area, fence in the whole property, and let the sheep live and graze all summer; in the fall, pay a slaughterhouse to "convert" it into meat. Is this a practical idea, or a fool's paradise? -- MattShepherd 17:17, 19 May 2006 (UTC)
How much land is necessary to sustain a single sheep? I once had a pet sheep that operated quite nicely on a 1/8 acre section (that's about 20 x 25 m). It all depends on the type of land you've got though, since this affects the stocking rate. Are sheep okay solo, or do they get bored/depressed/weird if they don't have companionship? Sheep are weird even with companions. They do get a bit bored, but as long as they've got something to keep them interested (my one seemed to like the odd old cardboard box). They also appreciate human comany every now and again, so going out to pet it is recommended. In other words, treat it like a pet, not like a lawn mower. How much does a full-grown sheep weigh? they can be lifted if you're strong, but they are fairly heavy, especially when they have a full fleece. At an estimate I'd say 100 lb (45 kg). You've got an apt name, BTW! :) Grutness... wha? 05:30, 20 May 2006 (UTC)
I was rubbing it the other day and for no reason at all it just fell off? I didn't think i was rubbing it that hard, will it be ok? I heard from a couple of my friends that it's perfectly normal, and that it's supposed to fall off? even that it's able to grow back. I kind of miss it, and wish it hadn't fallen off, will I be less of a person for going through life without it? Will not having it affect my masculinity at all? will i not want to eat meat anymore? how long does it take to grow back? can it be reattached? or is the area too sensitive for that kind of surgury? I mean I have extras, and from now on I'll never rub it so hard again. But still, I liked the one I had-- Question asker 18:05, 19 May 2006 (UTC)
I searched online, however was unable to locate any references. I was standing on my balcony overlooking the Thames and it is a muddy river with constant boat traffic. My question is this... why is the foam so incredibly white, both at the bow and stern? -- Djymz 18:27, 19 May 2006 (UTC)
What would a programming language have to do to be truly new? I mean to truly do something which no other language had done before? Is this limited by what computer chips themselves can do? What I'm getting at is that it seems to me that comparisons between languages are comparisons between how they do things and how easily they do things (as well as things like which paradigm(s) they allow / encourage, what type system they use etc etc), not between what they actually can do.
Thanks -- 87.194.20.253 18:51, 19 May 2006 (UTC)
"Is this limited by what computer chips themselves can do?" - No! Any mathematical question can be reformulated and programmed into a Turing complete programming language, almost by defition. Programming language development today centers around "productivity" - sure, you can write anything C/C++, but do you really want to spend all that time coding it in C/C++ when you can do it in {Java/Python/Perl/Ruby/etc} in a fraction the time? More specifically, programming for parallel computers (multi-processor, or multi-core machines) is *HARD* and the software tool simply don't exist (I should know this very well since I'm doing my PhD in parallel computing). Raul654 22:40, 19 May 2006 (UTC)
I consider quantum programming languages to be new, but they aren't going to run natively anytime soon. Melchoir 22:58, 19 May 2006 (UTC)
hi, everything i've read about LPG tells me that for running cars LPG is more economical, less polluting and is generally better for cars than petrol. in these days of global warming and i guess, "energy security" ( as i understand it, which i may not, gas, at least in Europe, comes from Russia) why don't governments promote it more heavily? at least in fuel-taxed societies, if the government increased taxes to pay for converting peoples cars, surely it would cut carbon emmissions over night? basically, i guess i'm actually asking, are there any cons to LPG that i don't know about? thanks 87.194.20.253 18:58, 19 May 2006 (UTC)
hi, all the chat about evolution got me thinking (in a lateral sort of way), it's widely assumed (at least by me) that bi-lingual children, regardless of what languages they speak , are better at learning new languages than monolingual children becuase their concept of language is more refined from an earlier age (e.g. a french/english child would have an easier time learning arabic say, than someone from a monolingual background). is this the same for any other subject areas? if i teach my child long division at the age of three, will he go on to find nuclear science a walk in the park? or how about if i get him started on shakespeare, will he then go on to have mastery of the english language beyond his years? if not, what is it that makes language so special and, if so, aren't we shooting ourselves in the foot by starting school at the ripe old age of 5? 87.194.20.253 19:14, 19 May 2006 (UTC)
elaborate please-- 71.249.0.202 20:55, 19 May 2006 (UTC)
This isn't a discussion board. It turns into one, sometimes, but a good question usually helps jump-start things. Yes, neutrinos have mass. This is observed due to neutrino oscillations, and the Seesaw mechanism may be involved. What else would you like to know? -- SCZenz 00:16, 20 May 2006 (UTC)
Yes, but they don't take Communion. -- MattShepherd 12:49, 25 May 2006 (UTC)
I've looked in time and not found anything relating to the question "Is time continuous or is it formed of discrete quanta". Any pointers to anything discussing this? -- SGBailey 21:33, 19 May 2006 (UTC)
I have 3 pulley blocks: 1x single, 1x dbl, 1x triple. The multiple blocks are sheaved side by side. What is the correct way to rove (run the rope through) the blocks to avoid them twisting? I am seeking a mechanical advantage of 6:1 for lifting. PS - The single pulley will be the tail out as it has a ratchet. Regards -JAG.
This has annoyed me for quite some time now, so I am going to ask here. A friend of mine says that leaving a bottle of soda without the cap on will not reduce the amount of fizz in the bottle faster than if one was to screw/unscrew the cap every time one needed to refill. Have there been any studies on soda losing fizz? It is an economical issue, actually. Today I was going to the store with some bottles, and found that there was half a gallon in total of unfizzy soda left in the "empty" bottles. You CAN'T drink unfizzy soda, it's like torture of some kind. The only good thing about soda losing fizz is that it becomes something to clean the pipes with, albeit not very efficiently. Henning 22:46, 19 May 2006 (UTC)
I need something to reply to that "soquid" nonsense. Is it a gel or an emulsion or what? — Keenan Pepper 01:34, 20 May 2006 (UTC)
Hey, check out the article now...according to it, it's a " Bingham plastic"? JianLi 20:25, 26 May 2006 (UTC)
Okay, I've actually gotten into a discussion about this with some people and I want to ask it here: Do you think it would be possible to domesticate a giraffe? I mean, obviously it would be an outdoor animal --but I think they might be quite fun as pets or at the least an alternative farm animal like ostriches. Same for sea otters, although I don't think they'd be as easy to take care of (and I have no interest in eating them) --sure you could place them in a pool but the chlorine would probably not mix well --would they require a base amount of salinity? They're sooo cute! Okay, the first question is serious, not the one about otters. The latter just rock. -- Bobak 02:10, 20 May 2006 (UTC)
Wow! Thanks for all the feedback. I really thought otters weren't going to work, but I guess they could too. Just reading the Wikipedia synopsis of Ring of Bright Water was depressing... I think I'll pass on it (sounds like the Old Yeller of otter movies). I remember seeing otters similar to the small-clawed otters at the Osaka Aquarium Kaiyukan (they were small and freshwater), I guess those would be possible. I guess I'll have to be a millionaire some day to raise them, though. As for giraffes, thanks for all the suggestions as well. Thanks for the reference to the Giraffe Lady, very interesting stuff! -- Bobak 19:26, 20 May 2006 (UTC)
what is the difference between bacteriophages, viruses and retroviruses —Preceding unsigned comment added by 211.28.236.104 ( talk • contribs)
Answers taken from the opening paragraph of the articles:
— Pengo 03:22, 20 May 2006 (UTC)
I've heard of a saying in physics that "time travels at the speed of light".What does it mean by that?
Are cockroaches known to cannibalise within their species or other species? - Tim Rhymeless (Er...let's shimmy) 06:29, 20 May 2006 (UTC)
This is not at all disimilar to what the homo-sapien females do to their male counterparts. 12.183.203.184 17:31, 27 May 2006 (UTC)
I've recently bought an Aigo A208-1G MP3 player. It is supposed to support DRM 9, but I downloaded the sample track from tesco but it wouldn't play - on my computer it made windows media player crash and on my mp3 it doesn't appear in the list of music (this is what happens to non-music files). Do you think it is the file, or my system that is the problem? Is there anywhere I can download a different drm 9 test from?-- Bjw e bb ( talk) 10:49, 20 May 2006 (UTC)
Oh, I've just realised, it does appear in the list on my MP3 player, it just doesn't play - it skips to the next song.
I've managed to fix the problem by reinstalling media player and using it to transfer the file to my mp3, along with the license.-- Bjw e bb ( talk) 13:10, 20 May 2006 (UTC)
On 19 May 2006, Rush Limbaugh said, "If the closest relatives of humans are chimpanzees, then why do they still exist?"
What is the best argument to counter such a query? I am very much baffled in light of the fact that humans and chimpanzees have inhabited the same regions throughout history. Patchouli 10:54, 20 May 2006 (UTC)
Simply put, chimpanzees are our relatives, not our ancestors. They are better described as our distant cousins than as our grandparents. — Pengo 13:42, 20 May 2006 (UTC)
If my closest relative is my brother, why does he still exist? Gdr 12:42, 24 May 2006 (UTC)
XBOX 360s evolved from the original XBOX. Why do they still exist? 12.183.203.184 17:27, 27 May 2006 (UTC)
I remember reading about this in the 1980s (and our Quorn article mentions it too) - apparently the "big thinkers" decided in the 1950s that the world was headed for a global shortage of dietary protein (presumbaly due to some kind of cow shortage). Motivated by this, lots of folks tried producing protein from novel sources. I remember reading about some large organisation trying to produce protein by growing something (bacteria?) in an unwanted heavy fraction of mineral oil, only to be thwarted by the excessive levels of uric acid found in DNA and RNA (a problem solved by the makers of Quorn). Do we have an article about this supposed protein shortage, and about those novel alternative sources projects? It'd be a fascinating read. -- Finlay McWalter | Talk 13:39, 20 May 2006 (UTC)
What percentage of global warmingis caused by polution from transport?
I've recently kicked off a science related chat room, which readers and writers on the Science reference desk may be interested in:
Come along and ask a question or join the discussion on #wikipedia-science. All welcome. — Pengo 13:59, 20 May 2006 (UTC) </plug>
irc://
. You will need to open the channel in your IRC client (see:
List of IRC clients), direct your broser to send all IRC protocols to the client or get a broser that has an internal IRC client (
Opera does). --
Swift
00:41, 21 May 2006 (UTC)I analyze protein solutions with an electrophoresis system from Amersham called "PhastGel" (I've heard other people refer to them as 'mini-gels'). I'm not a molecular biologist and I just use this system because it is what was already available in my lab.
I never see 'real' molecular biologists use this type of system for electrophoresis. I'm pretty sure that this simple-to-use system has some weaknesses, but I don't know what they are. Basically I want to get an idea of what I am sacrificing by using this type of system, versus the type of system used by more sophisticated workers. ike9898 14:21, 20 May 2006 (UTC)
I need to determine the number of moles I used in a titration.
The gfm of NaOH is 40, and I used 38mL of it. Do I take 40 times 38...?
Please help! Thanks in advance!
I've checked the articel here on radio spectrum but can't seem to find an explanation for this: I found an old radio (vacuum tubes, etc) with different "bands" marked on the tuning dial (Weather, Foreign, Police and AM), but except for the "AM" dial (Which is written the same as it is now), I can't figure out what the other bands frequencies are, given their markings of things like "6.5" for the foreign on. Anyone with old radio info know what these bands corresponded to? Thanx. 68.39.174.238 19:11, 20 May 2006 (UTC)
Have a look at [66]. If that doesn't give you all the information you wanted to know about shortwave receivers...-- G N Frykman 19:55, 21 May 2006 (UTC)
This is partly inspired by the discussion above involving birds and power lines. I've heard all my life, from very reliable sources, that if you drop an electrical appliance into a bathtub while it's plugged in, and someone's in the tub, they'll be killed or seriously injured. How? Tap water is (if I'm not mistaken) almost infinitely less resistant of current than the human body, so according to my physics class, almost no current should pass through them. Besides, it would have to travel quite a bit out of its way to even reach them, if I'm understanding the circuit correctly: (one wire->resistant appliance of some kind->other wire) becomes (one wire->barely resistant water right next to it->other wire). Black Carrot 19:21, 20 May 2006 (UTC)
When I first saw this post I thought, "That sounds like something the MythBusters should test," and then I wondered if they already had. Sure enough, here it is. (It was confirmed, for those of you who don't want to follow the wikilink.) E WS23 | (Leave me a message!) 07:11, 21 May 2006 (UTC)
Can someone explain to me how to balance this equation in a double replacement reaction?
NaOH + C6H8O7 = ?
I read that the specific heat of hyprogen gas goes up with temperature. When it gets hot enough for the hydrogen to change into plasma does this tren in rising specific heat continue, or is there a whole diferent ball park estimate for a "relitivly" low temperature plasma specific heat. I think I read some thing about the specific heat changing due to the diassosation of H2 into H1 so maybe this levels off, no?
How do rewriteable CDs work? I assume that recordable ones simply laser away the unwanted material, leaving behind the correct sequence of pits and bumps. But rewriteable ones must be able to create bumps also. How do they do this? D a niel ( ‽) 19:28, 20 May 2006 (UTC)
i may not know excalty what causes volcanos to erupt. but i understand that the pressure builds up to a a point where it cant be contained anymore. so heers my idea, why not manulay release the pressure every so often so the pressure cant build up to a destructive point. ie by say drilling into the volcano away from populated areas?-- Colsmeghead 21:19, 20 May 2006 (UTC)
the study of bacteria bacteriology -- Seejyb 23:06, 20 May 2006 (UTC)
One of the oldest ones from science class. NaHCO3 in water turns into Na+ and HCO3-. Add an acid, and the HCO3 reacts with the H+ in the acid. AFAIK, pH means percent of Hydrogen ions, ie H+. The question is simple: Will the reaction become more violent the higher pH my acid has? Henning 23:11, 20 May 2006 (UTC)
You've both fallen for a very old trick. The reaction will become more violent the lower the pH. And I do believe that the "p" of pH originated from the German for percentage. G N Frykman 08:51, 21 May 2006 (UTC)
In the reaction between sodium hydrogencarbonate and a dilute acid, the sodium ions do absolutely nothing. It bears no relation to the reaction between alkali metals and water. The more H+ ions there are per unit volume, the faster will be the reaction between them and the hydrogencarbonate ions (giving carbon dioxide and water). The pH scale is slightly odd in that the lower the number, the greater the concentration of H+ ions. I said that you had fallen for an old trick - in many exams, the question is asked - which has a higher pH, a strong acid or a weak acid? And the answer is the weak acid. In a similar way, a weak alkali has a lower pH than a strong alkali. To summarise - a low pH indicates lots of H+ ions which will give a fast reaction with sodium hydrogencarbonate. G N Frykman 11:38, 21 May 2006 (UTC)
Spot on, Henning! But you're not likely to notice much difference comparing the reactions of a strong acid and a weak acid just in the basic neutralisation reaction (acid + base) except that weak acids produce a marginally smaller temperature rise. Where it does become obvious is in the reactions of acids in which a gas is given off, and they are: acid + metal (eg magnesium); acid + carbonate (eg calcium carbonate) and the one you started with, acid + hydrogencarbonate. In all of these the speed of fizzing is dramatically slower with weaker acids, such as ethanoic acid, compared with the typical strong acid, hydrochloric acid. David Iberri - I was trying to keep it simple. Direct comparisons of pH can be made as long as the acids are of equal concentration. G N Frykman 17:25, 21 May 2006 (UTC)