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< July 11 | << Jun | July | Aug >> | July 13 > |
Welcome to the Wikipedia Science Reference Desk Archives |
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The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
Is anyone aware of a commercial product that's marketed or made for sealing potable water systems. In other words, it can come into contact with drinking water without risks? Obviously plumbing solder does this, but is there anything that's applied like a caulking? Even better if it can both metal and plastics, and withstand heat (up to 100 C)? Shadowjams ( talk) 00:18, 12 July 2010 (UTC)
Several years before he was diagnosed with vascular dementia, my grandfather had difficulty controlling the movement of his hands; we thought that it was perhaps Parkinson's disease, but (for reasons that I don't remember, as I was only a child then) the doctors eventually decided that it wasn't. Can vascular dementia cause symptoms like those of Parkinson's? I've read the vascular dementia article and some things I found online, but nothing I've seen talks about it. By the way, please don't think that I'm asking for medical advice; my grandfather died in 2006. 71.79.87.249 ( talk) 02:01, 12 July 2010 (UTC)
In the case of your Granddad, I THINK you are refering to a condition, what we doctors, call Lewy Body Dementia, which shares characteristics with both Alzheimer's disease and Parkinson's disease. Like Alzheimer's, it causes confusion. Like Parkinson's, it can result in rigid muscles, slowed movement and tremors.
The "vascular" in "vascular dementia" means that the problem is caused by an impairment of blood supply to the brain. The "dementia" part means that the problem has damaged parts of the brain involved in memory and cognition. Normally damage to those parts of the brain won't in itself cause tremor, but the vascular issues can easily extend to other parts of the brain such as the cerebellum and basal ganglia where damage can produce tremor. In other words, vascular dementia shouldn't cause tremor in itself, but the vascular problems that cause the dementia can also independently cause tremor. Looie496 ( talk) 16:06, 12 July 2010 (UTC)
I would like to charge a battery (possibly lead acid or possibly just a number of NiCds in a battery-pack) from my bike dynamo and in turn use those batteries to power rear and front lights arranged from LEDs. Can the simple circuit, suggested by Katie, 6 years old, from Sussex, do what I want? I only own a soldering iron and solder, so I don't want to use a PCB if I can avoid. There are some complicated designs out there for powering LED bike lights, but they would be very expensive and time consuming to build, considering I'd only produce one.
Notice that the lights are two-deep in series and then in parallel - if the forward voltage drop on the LEDs is 3.2-3.6v, should that be fine? I'd sooner not use a resistor, since I figure that just wasted energy.
Also, is the ammeter really necessary? It was just there in the design I copied with no explanation. -- 78.148.136.27 ( talk) 03:08, 12 July 2010 (UTC)
(am putting this on the Science desk because I think that the type of people who use and understand GIS would be more prevalent here than on Computing)
Could someone please recommend a free GIS application that can handle orthorectification? I've got some maps with slight scanning distortions that I need to rectify and I can't pony up for a private license of ArcGIS :-) 218.25.32.210 ( talk) 03:20, 12 July 2010 (UTC)
We were planning to buy a 3D TV and Samsung has launched the latest 3D LED TV which seems mouthwatering. My question is, will such 3D TVs show all programmes in 3 dimension or will it show only SELECTIVE/ special programmes which have to be shot with a 3D camera? Meaning to say will tennis balls and footballs appear to jump into our living room irrespective of whether the programme is shot in 3D or not?--Fragrantforever 04:28, 12 July 2010 (UTC) —Preceding unsigned comment added by Fragrantforever ( talk • contribs)
Thanks Ariel, so the TV doesnt convert 2D programmes into 3D? --Fragrantforever 05:02, 12 July 2010 (UTC) —Preceding unsigned comment added by Fragrantforever ( talk • contribs)
Thanks everyone for such interesting and informative answers. Fragrantforever 06:24, 13 July 2010 (UTC) —Preceding unsigned comment added by Fragrantforever ( talk • contribs)
I understand the ecological brouhaha that Greenpeace and other champions cryout loud. But what I dont understand is, BP is a company which has agreed to explore the ocean surface to extract crude and supply the US Govt so that the crude can be used for its use. No company, in its right bearings, would deliberately sabotage itself and burst the pipes and kill its own staff to cause such a catastrophic oil spill. People argue, BP had subcontracted the operations of the rig to a third party who didnt maintain strict quality and good standards which resulted in this tragedy.
My question is moral issues aside, when a company agrees to undertake such difficult scientific procedure, like extracting crude from below the ocean floor, cant they have a clause in the contract which protects them from such unforseen calamities? Because everyone seems happy to blame the organisation while very little seems to be the focus on actually sitting together and using technology to solve this issue. ( Im not supporting BP here but was annoyed to see Obama's repeated press and tv statements blaming BP and offering nothing constructive as a viable option).
The reason why I ask this Question is, if hypothetically speaking the new cap fails to stop the flow and oil ccontinues to gush out, how long are we going to indulge in sabre rattling?--Fragrantforever 05:14, 12 July 2010 (UTC) —Preceding unsigned comment added by Fragrantforever ( talk • contribs)
Thanks everyone for the answers... Im still new to Wikipedia and had by mistake posted this question here. I was replying to a few threads here on the science desk and instead of posting this in the Misc Section had inadvertently left this q here. My apologies. Only after posting I realised the folly but dint know how to shift the question to the Misc desk hence left this here.--Fragrantforever 09:45, 12 July 2010 (UTC) —Preceding unsigned comment added by Fragrantforever ( talk • contribs)
A few question above someone's placed a question about an electronic circuit and given a link to it. What I find interesting and well...disturbing is the fact that the person is a six years old child ! I can't even imagine an Indian kid asking such question, they can't even wipe their noses properly at this age ! I doubt even if a high school passed out actually understands it fully ! What I want to know is this : Is it considered normal (by you wiseguys in West), or it is just once in while like Siamese twins! How do people view this trait in kids, especially the rightwing folks... Jon Ascton (talk) 06:02, 12 July 2010 (UTC)
What's wrong with you Westerners. My parents taught me serial v. parallel around the age of six. I became especially interested in electricity at tha age of 8 after I picked up a book about it, and constructed my own galvanic cells and electroplating devices. (Didn't really understand the Nernst equation at the time though...redox potentials at the age of 10). Now if I had been shown those books at a younger age, maybe I could have drawn circuit diagrams at the age of six. I remember drawing blueprints for an especially large castle (I still <3 castles) at the age of six for a school project, and that's much harder than drawing a circuit diagram. John Riemann Soong ( talk) 16:18, 12 July 2010 (UTC)
Oh interest and motivation are such more important than intelligence at this age. To this day, the foundation of my science knowledge started with the Magic School Bus and books on science and technology I picked out of my elementary school library. They actually contain a lot of info, which will lead you to learn how to draw a circuit diagram. The teaching method of the teacher is more important than the ability of the student. When I was in third grade in AMERICA, our teacher had us build telegraph circuits.... we had to know how an electromagnet worked. How to prevent short circuits. Things like switches and path of least resistance. For a third grader, trying not to mix up the receiver and transmitter citcuits took some thinking.
Then, when we wanted to hook everyone one of us (all 23) into a single telegraph network, we had to think hard how to do it. To me that's harder than figuring out that current*potential difference = power. Okay our teacher helped us a little, but we were in fucking third grade. Don't insult the ability of grade school children. John Riemann Soong ( talk) 16:28, 12 July 2010 (UTC)
Does the omniverse exist? —Preceding unsigned comment added by 220.253.104.38 ( talk) 09:36, 12 July 2010 (UTC)
I believe it exists, simply because any formally describable structure can be simulated using a computer. In our own universe described by the Standard model Lagrangian, there will always be a finite probability for some civilization to do exactly the right kind of computer simulation that gives rise to virtual observers living in a universe described by any other Lagrangian. You can think of this other Lagrangian as an effective Lagrangian implemented by the computer. Count Iblis ( talk) 14:18, 12 July 2010 (UTC)
Why this time I get no Metadata?
Jon Ascton (talk) 10:25, 12 July 2010 (UTC)
Please look carefully at this site. They are telling us these pictures have been taken with a Nikon Coolpix L20, a point-and-shoot thing ! Is it possible, you can see an actual Nikon Coolpix shot (taken by myself in above question ) and make a comparison of quality. Jon Ascton (talk) 12:16, 12 July 2010 (UTC)
Can octopuses see colors? Thanks. -- Mudupie ( talk) 10:29, 12 July 2010 (UTC)
Despite all the definitions I looked up, and all the explanations, I still don't understand Quantum. In the notes on the Intro to Quantum Mechanics, it states
"The word "quantum" comes from the Latin word for "how much" (as does "quantity"). Something that is "quantized", like the energy of Planck's harmonic oscillators, can only take specific values. For example, in most countries money is effectively quantized, with the "quantum of money" being the lowest-value coin in circulation. "Mechanics" is the branch of science that deals with the action of forces on objects, and so "quantum mechanics" is the form of mechanics that deals with objects for which particular properties are quantized. "
But I still don't understand. Why not call in Quantity Mechanics? What's the difference? 148.168.127.10 ( talk) 16:44, 12 July 2010 (UTC)
This simple experiment was done just over 100 years ago and found how electric charges are quantised as whole multiples of the charge of the electron. Cuddlyable3 ( talk) 20:54, 12 July 2010 (UTC)
I was doing an online quiz recently and one of the questions was "In which months is it hottest on the equator?" The answer given was March and September. Is that correct? Why would it be warmer at the equinoxes than at the solstices? Rojomoke ( talk) 17:11, 12 July 2010 (UTC)
I have heard or read that insects (and maybe all arthropods) have little or no ability to repair damaged tissues, such that if you whack a flying housefly with your hand, even though you didn't squish it, the damage is sure to be mortal, as you have probably cracked its skin someplace. True? Comet Tuttle ( talk) 17:37, 12 July 2010 (UTC)
Okay so I've been reading a lot about this stuff, searching for the answer to this question but nothing seems to address it. Pretend I'm five years old, please.
I understand that black holes are not only possible but extremely evident that they exist. But there's a mathematical freak out when you get to the center of the black hole called the singularity. Apparently this singularity thing drives scientists crazy cause we don't have any form of logic to explain what's going on, mathematical or otherwise, and to add insult to injury they keep finding more and more of these things.
Using the same logic that got them to black holes, scientist figure there could be a thing opposite of a black hole, coincidently called the white hole, which holds the same singularity as its sister. This one's weird because although it is indeed POSSIBLE scientist agree its not really likely to happen in nature.
I went on to learn that worm holes are actually a product of a pair of a black hole and a white hole. So, as long as you can survive the singularity (which you can't) you can go THROUGH the black hole and come out of the white hole.
This got me thinking (Thinking! I know. Dangerous, right?)
So, all these wise guys say that white holes are entirely possible, but they don't occur in nature. Well! I mean, coca-cola doesn't happen in nature but we make it anyways, right? And after the scare with the particle accelerator and the possibility of it sparking a black hole, I was all like, "Crap! We can MAKE them??" So, okay, if we can make a black hole can't the same be true for the white ones? Like if we were some how able to make some gadget that will stop just before the singularity, is it possible for this same gadget to have a function in which it reverses what the singularity does and create a white hole from a black one?
After having posed that question to myself, I considered the consequences of such a feat. Imagine a weapon of infinite energy or a fuel plant with the same infinite energy.
Also, while reading about this stuff, I found that Relativity suggests that once inside the event horizon time and space switch roles in that the path you are going in is inescapable like trying to avoid next Thursday. But they never addressed the properties of TIME inside the event horizon. So again, I dealt with the dangers of thinking and thought, "Hey! Wait a minute!" Can a guy with a time machine INSIDE the event horizon escape the black hole? —Preceding unsigned comment added by 65.3.131.144 ( talk) 18:10, 12 July 2010 (UTC)
The thing about the singularity at the center of a black hole is that it's safely cloaked by the event horizon. We can't know (much) about what goes on inside the event horizon - basically we know the mass, the amount of spin and the electrical charge on the black hole. So we can't ever actually know what happens inside. Maybe some unknown force at super-small distances stops the decline into a true singularity? Maybe temporal distortions inside the black hole mean that it can never actually reach that infinitely small dot - or that it'll take an infinite amount of time to actually get there. The actual result doesn't matter in any practical terms - the event horizon guarantees that nothing inside the hole can affect us out here (except for the mass, charge and spin which are all independent of whether there is an actual singularity or not). SteveBaker ( talk) 22:10, 12 July 2010 (UTC)
On Talk:Rorschach test/disclosure, someone made the claim that the Rorschach test is used in "job enterviews." What kind of a job would include a Rorschach test as part of its interview? The Hero of This Nation ( talk) 18:13, 12 July 2010 (UTC)
Is anyone here a doctor? I'm sorry but not being or related to any real doctors most of what I know about the internal workings of the medical profession comes from medical TV shows ;) IN shows like House or General Hospital or Scrubs, etc., etc., the only clear division between what a doctor can and cannot do is whether they specialise in afiield of surgery or medicine. Other than that it seems an immunologist can be an emergency room doctor, a plastic surgeon can be a ("real") sergeon and a doctor of any specialty can be a GP. Is this correct? thanks —Preceding unsigned comment added by 68.76.146.113 ( talk) 18:23, 12 July 2010 (UTC)
I wouldnt take the TV Shows very seriously. Real life "doctoring" is much more interesting and rewarding than TV shows( Im speaking personally here). And it isnt so dramatic, we dont cry or fight at the drop of a hat and we literally dont sit and hold hands with every single patient, either. As a specialist in Emergency and Trauma Care, I see my share of busy whirlwind days and very quiet peaceful days - today is one such day;)) About your question as to how an immunologist can treat a patient in the ER or how a plastic surgeon can give GP advice, ofcourse we do it. And no one gets arrested or thrown in jail for that. Im authorised to see a walk in OPD patient ( If Im on OPD duty on that day) who might be suffering from a medical condition or surgical condition which doesnt relate directly to my specialisation. But in these days of heightened judicial activism and lawyers and patients waiting to pounce on a doctor for any small slip, normally doctors have become wary and play it safe. It ultimately boils down to what you personally choose. Medicine is an ocean and an art, a good surgeon can also be a good physican and a good gynecologist. Even though you choose to specialise in one particular field, you have to go through a vigorous rotating internship where you have to work in dirrerent wards, psychiatry, oncology, dematology and path labs and so on. So any doctor who takes his work seriously would definitely know much more than the mere basics of other specialities too. This is what they show in TV soaps albeit in a dramtic way. Usually doctors wouldnt go beyond their specilisation and give unwanted advice in other specialities only because there wudnt be much spare time to indulge in such luxuries. A specilist is always tied up with his/ her commitments and would only give advice if a specific request emanates from a friend/ another specialist. ( what we call internal referral). Another glaring error in TV "doctor" shows is that, they show doctors mixing their personal and professional lifes. In most cases, this isnt true. Even the best looking ( and most sought after) doctor would rather experiment outside his work environs. We do have patients who try and hit on us. We mostly ignore it with a smile. After all we are also responsible "thinking" humans who have loving families back home and unlike TV shows people dont drop their trousers at the drop of a hat.Fragrantforever 04:58, 13 July 2010 (UTC)
Referring back to [12], I finally looked and found it is a State 510E. No web address, of course, since the concept didn't exist yet. Vchimpanzee · talk · contributions · 19:36, 12 July 2010 (UTC)
Science desk | ||
---|---|---|
< July 11 | << Jun | July | Aug >> | July 13 > |
Welcome to the Wikipedia Science Reference Desk Archives |
---|
The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
Is anyone aware of a commercial product that's marketed or made for sealing potable water systems. In other words, it can come into contact with drinking water without risks? Obviously plumbing solder does this, but is there anything that's applied like a caulking? Even better if it can both metal and plastics, and withstand heat (up to 100 C)? Shadowjams ( talk) 00:18, 12 July 2010 (UTC)
Several years before he was diagnosed with vascular dementia, my grandfather had difficulty controlling the movement of his hands; we thought that it was perhaps Parkinson's disease, but (for reasons that I don't remember, as I was only a child then) the doctors eventually decided that it wasn't. Can vascular dementia cause symptoms like those of Parkinson's? I've read the vascular dementia article and some things I found online, but nothing I've seen talks about it. By the way, please don't think that I'm asking for medical advice; my grandfather died in 2006. 71.79.87.249 ( talk) 02:01, 12 July 2010 (UTC)
In the case of your Granddad, I THINK you are refering to a condition, what we doctors, call Lewy Body Dementia, which shares characteristics with both Alzheimer's disease and Parkinson's disease. Like Alzheimer's, it causes confusion. Like Parkinson's, it can result in rigid muscles, slowed movement and tremors.
The "vascular" in "vascular dementia" means that the problem is caused by an impairment of blood supply to the brain. The "dementia" part means that the problem has damaged parts of the brain involved in memory and cognition. Normally damage to those parts of the brain won't in itself cause tremor, but the vascular issues can easily extend to other parts of the brain such as the cerebellum and basal ganglia where damage can produce tremor. In other words, vascular dementia shouldn't cause tremor in itself, but the vascular problems that cause the dementia can also independently cause tremor. Looie496 ( talk) 16:06, 12 July 2010 (UTC)
I would like to charge a battery (possibly lead acid or possibly just a number of NiCds in a battery-pack) from my bike dynamo and in turn use those batteries to power rear and front lights arranged from LEDs. Can the simple circuit, suggested by Katie, 6 years old, from Sussex, do what I want? I only own a soldering iron and solder, so I don't want to use a PCB if I can avoid. There are some complicated designs out there for powering LED bike lights, but they would be very expensive and time consuming to build, considering I'd only produce one.
Notice that the lights are two-deep in series and then in parallel - if the forward voltage drop on the LEDs is 3.2-3.6v, should that be fine? I'd sooner not use a resistor, since I figure that just wasted energy.
Also, is the ammeter really necessary? It was just there in the design I copied with no explanation. -- 78.148.136.27 ( talk) 03:08, 12 July 2010 (UTC)
(am putting this on the Science desk because I think that the type of people who use and understand GIS would be more prevalent here than on Computing)
Could someone please recommend a free GIS application that can handle orthorectification? I've got some maps with slight scanning distortions that I need to rectify and I can't pony up for a private license of ArcGIS :-) 218.25.32.210 ( talk) 03:20, 12 July 2010 (UTC)
We were planning to buy a 3D TV and Samsung has launched the latest 3D LED TV which seems mouthwatering. My question is, will such 3D TVs show all programmes in 3 dimension or will it show only SELECTIVE/ special programmes which have to be shot with a 3D camera? Meaning to say will tennis balls and footballs appear to jump into our living room irrespective of whether the programme is shot in 3D or not?--Fragrantforever 04:28, 12 July 2010 (UTC) —Preceding unsigned comment added by Fragrantforever ( talk • contribs)
Thanks Ariel, so the TV doesnt convert 2D programmes into 3D? --Fragrantforever 05:02, 12 July 2010 (UTC) —Preceding unsigned comment added by Fragrantforever ( talk • contribs)
Thanks everyone for such interesting and informative answers. Fragrantforever 06:24, 13 July 2010 (UTC) —Preceding unsigned comment added by Fragrantforever ( talk • contribs)
I understand the ecological brouhaha that Greenpeace and other champions cryout loud. But what I dont understand is, BP is a company which has agreed to explore the ocean surface to extract crude and supply the US Govt so that the crude can be used for its use. No company, in its right bearings, would deliberately sabotage itself and burst the pipes and kill its own staff to cause such a catastrophic oil spill. People argue, BP had subcontracted the operations of the rig to a third party who didnt maintain strict quality and good standards which resulted in this tragedy.
My question is moral issues aside, when a company agrees to undertake such difficult scientific procedure, like extracting crude from below the ocean floor, cant they have a clause in the contract which protects them from such unforseen calamities? Because everyone seems happy to blame the organisation while very little seems to be the focus on actually sitting together and using technology to solve this issue. ( Im not supporting BP here but was annoyed to see Obama's repeated press and tv statements blaming BP and offering nothing constructive as a viable option).
The reason why I ask this Question is, if hypothetically speaking the new cap fails to stop the flow and oil ccontinues to gush out, how long are we going to indulge in sabre rattling?--Fragrantforever 05:14, 12 July 2010 (UTC) —Preceding unsigned comment added by Fragrantforever ( talk • contribs)
Thanks everyone for the answers... Im still new to Wikipedia and had by mistake posted this question here. I was replying to a few threads here on the science desk and instead of posting this in the Misc Section had inadvertently left this q here. My apologies. Only after posting I realised the folly but dint know how to shift the question to the Misc desk hence left this here.--Fragrantforever 09:45, 12 July 2010 (UTC) —Preceding unsigned comment added by Fragrantforever ( talk • contribs)
A few question above someone's placed a question about an electronic circuit and given a link to it. What I find interesting and well...disturbing is the fact that the person is a six years old child ! I can't even imagine an Indian kid asking such question, they can't even wipe their noses properly at this age ! I doubt even if a high school passed out actually understands it fully ! What I want to know is this : Is it considered normal (by you wiseguys in West), or it is just once in while like Siamese twins! How do people view this trait in kids, especially the rightwing folks... Jon Ascton (talk) 06:02, 12 July 2010 (UTC)
What's wrong with you Westerners. My parents taught me serial v. parallel around the age of six. I became especially interested in electricity at tha age of 8 after I picked up a book about it, and constructed my own galvanic cells and electroplating devices. (Didn't really understand the Nernst equation at the time though...redox potentials at the age of 10). Now if I had been shown those books at a younger age, maybe I could have drawn circuit diagrams at the age of six. I remember drawing blueprints for an especially large castle (I still <3 castles) at the age of six for a school project, and that's much harder than drawing a circuit diagram. John Riemann Soong ( talk) 16:18, 12 July 2010 (UTC)
Oh interest and motivation are such more important than intelligence at this age. To this day, the foundation of my science knowledge started with the Magic School Bus and books on science and technology I picked out of my elementary school library. They actually contain a lot of info, which will lead you to learn how to draw a circuit diagram. The teaching method of the teacher is more important than the ability of the student. When I was in third grade in AMERICA, our teacher had us build telegraph circuits.... we had to know how an electromagnet worked. How to prevent short circuits. Things like switches and path of least resistance. For a third grader, trying not to mix up the receiver and transmitter citcuits took some thinking.
Then, when we wanted to hook everyone one of us (all 23) into a single telegraph network, we had to think hard how to do it. To me that's harder than figuring out that current*potential difference = power. Okay our teacher helped us a little, but we were in fucking third grade. Don't insult the ability of grade school children. John Riemann Soong ( talk) 16:28, 12 July 2010 (UTC)
Does the omniverse exist? —Preceding unsigned comment added by 220.253.104.38 ( talk) 09:36, 12 July 2010 (UTC)
I believe it exists, simply because any formally describable structure can be simulated using a computer. In our own universe described by the Standard model Lagrangian, there will always be a finite probability for some civilization to do exactly the right kind of computer simulation that gives rise to virtual observers living in a universe described by any other Lagrangian. You can think of this other Lagrangian as an effective Lagrangian implemented by the computer. Count Iblis ( talk) 14:18, 12 July 2010 (UTC)
Why this time I get no Metadata?
Jon Ascton (talk) 10:25, 12 July 2010 (UTC)
Please look carefully at this site. They are telling us these pictures have been taken with a Nikon Coolpix L20, a point-and-shoot thing ! Is it possible, you can see an actual Nikon Coolpix shot (taken by myself in above question ) and make a comparison of quality. Jon Ascton (talk) 12:16, 12 July 2010 (UTC)
Can octopuses see colors? Thanks. -- Mudupie ( talk) 10:29, 12 July 2010 (UTC)
Despite all the definitions I looked up, and all the explanations, I still don't understand Quantum. In the notes on the Intro to Quantum Mechanics, it states
"The word "quantum" comes from the Latin word for "how much" (as does "quantity"). Something that is "quantized", like the energy of Planck's harmonic oscillators, can only take specific values. For example, in most countries money is effectively quantized, with the "quantum of money" being the lowest-value coin in circulation. "Mechanics" is the branch of science that deals with the action of forces on objects, and so "quantum mechanics" is the form of mechanics that deals with objects for which particular properties are quantized. "
But I still don't understand. Why not call in Quantity Mechanics? What's the difference? 148.168.127.10 ( talk) 16:44, 12 July 2010 (UTC)
This simple experiment was done just over 100 years ago and found how electric charges are quantised as whole multiples of the charge of the electron. Cuddlyable3 ( talk) 20:54, 12 July 2010 (UTC)
I was doing an online quiz recently and one of the questions was "In which months is it hottest on the equator?" The answer given was March and September. Is that correct? Why would it be warmer at the equinoxes than at the solstices? Rojomoke ( talk) 17:11, 12 July 2010 (UTC)
I have heard or read that insects (and maybe all arthropods) have little or no ability to repair damaged tissues, such that if you whack a flying housefly with your hand, even though you didn't squish it, the damage is sure to be mortal, as you have probably cracked its skin someplace. True? Comet Tuttle ( talk) 17:37, 12 July 2010 (UTC)
Okay so I've been reading a lot about this stuff, searching for the answer to this question but nothing seems to address it. Pretend I'm five years old, please.
I understand that black holes are not only possible but extremely evident that they exist. But there's a mathematical freak out when you get to the center of the black hole called the singularity. Apparently this singularity thing drives scientists crazy cause we don't have any form of logic to explain what's going on, mathematical or otherwise, and to add insult to injury they keep finding more and more of these things.
Using the same logic that got them to black holes, scientist figure there could be a thing opposite of a black hole, coincidently called the white hole, which holds the same singularity as its sister. This one's weird because although it is indeed POSSIBLE scientist agree its not really likely to happen in nature.
I went on to learn that worm holes are actually a product of a pair of a black hole and a white hole. So, as long as you can survive the singularity (which you can't) you can go THROUGH the black hole and come out of the white hole.
This got me thinking (Thinking! I know. Dangerous, right?)
So, all these wise guys say that white holes are entirely possible, but they don't occur in nature. Well! I mean, coca-cola doesn't happen in nature but we make it anyways, right? And after the scare with the particle accelerator and the possibility of it sparking a black hole, I was all like, "Crap! We can MAKE them??" So, okay, if we can make a black hole can't the same be true for the white ones? Like if we were some how able to make some gadget that will stop just before the singularity, is it possible for this same gadget to have a function in which it reverses what the singularity does and create a white hole from a black one?
After having posed that question to myself, I considered the consequences of such a feat. Imagine a weapon of infinite energy or a fuel plant with the same infinite energy.
Also, while reading about this stuff, I found that Relativity suggests that once inside the event horizon time and space switch roles in that the path you are going in is inescapable like trying to avoid next Thursday. But they never addressed the properties of TIME inside the event horizon. So again, I dealt with the dangers of thinking and thought, "Hey! Wait a minute!" Can a guy with a time machine INSIDE the event horizon escape the black hole? —Preceding unsigned comment added by 65.3.131.144 ( talk) 18:10, 12 July 2010 (UTC)
The thing about the singularity at the center of a black hole is that it's safely cloaked by the event horizon. We can't know (much) about what goes on inside the event horizon - basically we know the mass, the amount of spin and the electrical charge on the black hole. So we can't ever actually know what happens inside. Maybe some unknown force at super-small distances stops the decline into a true singularity? Maybe temporal distortions inside the black hole mean that it can never actually reach that infinitely small dot - or that it'll take an infinite amount of time to actually get there. The actual result doesn't matter in any practical terms - the event horizon guarantees that nothing inside the hole can affect us out here (except for the mass, charge and spin which are all independent of whether there is an actual singularity or not). SteveBaker ( talk) 22:10, 12 July 2010 (UTC)
On Talk:Rorschach test/disclosure, someone made the claim that the Rorschach test is used in "job enterviews." What kind of a job would include a Rorschach test as part of its interview? The Hero of This Nation ( talk) 18:13, 12 July 2010 (UTC)
Is anyone here a doctor? I'm sorry but not being or related to any real doctors most of what I know about the internal workings of the medical profession comes from medical TV shows ;) IN shows like House or General Hospital or Scrubs, etc., etc., the only clear division between what a doctor can and cannot do is whether they specialise in afiield of surgery or medicine. Other than that it seems an immunologist can be an emergency room doctor, a plastic surgeon can be a ("real") sergeon and a doctor of any specialty can be a GP. Is this correct? thanks —Preceding unsigned comment added by 68.76.146.113 ( talk) 18:23, 12 July 2010 (UTC)
I wouldnt take the TV Shows very seriously. Real life "doctoring" is much more interesting and rewarding than TV shows( Im speaking personally here). And it isnt so dramatic, we dont cry or fight at the drop of a hat and we literally dont sit and hold hands with every single patient, either. As a specialist in Emergency and Trauma Care, I see my share of busy whirlwind days and very quiet peaceful days - today is one such day;)) About your question as to how an immunologist can treat a patient in the ER or how a plastic surgeon can give GP advice, ofcourse we do it. And no one gets arrested or thrown in jail for that. Im authorised to see a walk in OPD patient ( If Im on OPD duty on that day) who might be suffering from a medical condition or surgical condition which doesnt relate directly to my specialisation. But in these days of heightened judicial activism and lawyers and patients waiting to pounce on a doctor for any small slip, normally doctors have become wary and play it safe. It ultimately boils down to what you personally choose. Medicine is an ocean and an art, a good surgeon can also be a good physican and a good gynecologist. Even though you choose to specialise in one particular field, you have to go through a vigorous rotating internship where you have to work in dirrerent wards, psychiatry, oncology, dematology and path labs and so on. So any doctor who takes his work seriously would definitely know much more than the mere basics of other specialities too. This is what they show in TV soaps albeit in a dramtic way. Usually doctors wouldnt go beyond their specilisation and give unwanted advice in other specialities only because there wudnt be much spare time to indulge in such luxuries. A specilist is always tied up with his/ her commitments and would only give advice if a specific request emanates from a friend/ another specialist. ( what we call internal referral). Another glaring error in TV "doctor" shows is that, they show doctors mixing their personal and professional lifes. In most cases, this isnt true. Even the best looking ( and most sought after) doctor would rather experiment outside his work environs. We do have patients who try and hit on us. We mostly ignore it with a smile. After all we are also responsible "thinking" humans who have loving families back home and unlike TV shows people dont drop their trousers at the drop of a hat.Fragrantforever 04:58, 13 July 2010 (UTC)
Referring back to [12], I finally looked and found it is a State 510E. No web address, of course, since the concept didn't exist yet. Vchimpanzee · talk · contributions · 19:36, 12 July 2010 (UTC)