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I need to know, in depth, all aspects of the behavior of electrons in crystaline structures (more specifically, quantum dots). If there is an article on this, please let me know. Thanks! Zrs 12 ( talk) 03:01, 18 March 2008 (UTC)
Infrared rays having best penetration in skin and flesh, why can't be utilized for in-vivo non-invasive probing? Can't these rays yield good signature of bones? Neel shah556 ( talk) 04:00, 18 March 2008 (UTC)
Will rise in sea level be even across the world? Or will the rise be more in regions near to arctic and antarctic and less in regions near equator? —Preceding unsigned comment added by 59.92.113.83 ( talk) 06:46, 18 March 2008 (UTC)
I belive that the sea level will not be even around the world but I do not know the answer to your second question. But i promise I will try to find out. SilverLeaf 209.226.138.43 ( talk) 18:22, 23 March 2008 (UTC)
Doctors and pharmacists are Wikipedia editors as well.
This is not about pharmacy or medicine. The question is: Is MSM oxidized or reduced in household storage (or does it decompose)? [household chemistry]
MSM is not pharmacy; It is a mineral (sulfur) nutrient, much like calcium or magnesium. But the question is not so much about nutrition as it is about msm decomposition in household storage. Please leave this for discussion. —Preceding unsigned comment added by Zaqry ( talk • contribs) 19:42, 18 March 2008 (UTC)
Is MSM oxidized or reduced in household storage (or does it decompose)? —Preceding unsigned comment added by Zaqry ( talk • contribs) 22:39, 18 March 2008 (UTC)
Does MSM decompose in household storage and how (oxidation or reduction reaction for example)? —Preceding unsigned comment added by Zaqry ( talk • contribs) 18:00, 19 March 2008 (UTC)
A 50,000-watt radio station is transmitting at full power.
Thanks for the help! Franamax ( talk) 08:08, 18 March 2008 (UTC)
My understanding is
I live in Bulgaria. How do I find out whether an atomic radio clock will work in Bulgaria? Do I have to obtain one from a specific provider? —Preceding unsigned comment added by ENiklaus ( talk • contribs) 12:06, 18 March 2008 (UTC)
In a problem I'm trying to solve, there are 2 alleles, A and a. a is a defective allele, so the genotype aa induces disease. Both parents are carriers: Aa.
1) What is the probability that all three children are of normal phenotype? The way I see it, the chance of the normal phenotype in one child is 3/4, the result of a simple Aa x Aa Punnett square, so (3/4)3 = 27/64.
2) What is the probability that one or more of the children have the disease? Shouldn't it be 1/4 + 1/4 + 1/4 = 3/4?
But 27/64 + 3/4 ≠ 1 ... help! Thanks, anon. —Preceding
unsigned comment added by
70.23.85.120 (
talk) 16:48, 18 March 2008 (UTC)
In the article excepted below [and in many secondary & tertiary sources] the assertion is made that “--the Chad population was over 300,000 animals as recently as 1970 and has been reduced to approximately 10,000 as of 2006.” I have looked carefully at the publications of the African Elephant Specialist Group of the IUCN for confirmation of these figures [latest report 2007]. The IUCN folks report no data on Chad elephants before 1985. They report “no evidence” for 1981 and no figures before that time. Where did this 300,000 figure originate and who started it?
The IUCN report titled African Elephants and Rhinos: Status Survey and Conservation Report (1990) gave a 1987 estimate of between 200-400,000 elephants for Central Africa including Cameroon, Central Afr. Rep, Chad, Congo, Equat. Guinea, Gabon and Zaire [Now Dem Rep. of Congo]. Nearly half (195,000) of these animals were estimated for Zaire.
The IUCN 2007 African Elephant Status Report: An update from the African Elephant Database gives the Probable number of elephants in Central Africa as 48,936, with the Probable number from Dem Rep of Congo as only 7,955 animals. Thus Zaire (Dem Rep Congo) HAS lost 95% of the estimated elephant population from 1987 to 2007. The upper estimate for Central Africa in 1990 was 375,800. The upper estimate for 2007 is 48,936; thus an estimated loss of about 76%.
I agree with “SWAdair” that someone probably extrapolated from Central Africa data to Chad, but the loss of almost 300,000 savanna elephants from Chad could not have gone unnoticed. The figure is fictitious. Lynmil ( talk) 19:38, 24 March 2008 (UTC)
The question is what are metals called that are paramagnetic,but do not become magnetized (they are attracted by magnets, but when removed from magnetic infuences, are not magnetic)?
What metals are these? How do I reference the subject on WikiPedia?
Thank You, My Email address (removed for your protection)—Preceding unsigned comment added by 151.202.62.236 ( talk) 19:55, 18 March 2008 (UTC)
What is cyclooctatetraene? 66.81.43.129 ( talk) 21:59, 18 March 2008 (UTC)
Science desk | ||
---|---|---|
< March 17 | << Feb | March | Apr >> | March 19 > |
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. |
I need to know, in depth, all aspects of the behavior of electrons in crystaline structures (more specifically, quantum dots). If there is an article on this, please let me know. Thanks! Zrs 12 ( talk) 03:01, 18 March 2008 (UTC)
Infrared rays having best penetration in skin and flesh, why can't be utilized for in-vivo non-invasive probing? Can't these rays yield good signature of bones? Neel shah556 ( talk) 04:00, 18 March 2008 (UTC)
Will rise in sea level be even across the world? Or will the rise be more in regions near to arctic and antarctic and less in regions near equator? —Preceding unsigned comment added by 59.92.113.83 ( talk) 06:46, 18 March 2008 (UTC)
I belive that the sea level will not be even around the world but I do not know the answer to your second question. But i promise I will try to find out. SilverLeaf 209.226.138.43 ( talk) 18:22, 23 March 2008 (UTC)
Doctors and pharmacists are Wikipedia editors as well.
This is not about pharmacy or medicine. The question is: Is MSM oxidized or reduced in household storage (or does it decompose)? [household chemistry]
MSM is not pharmacy; It is a mineral (sulfur) nutrient, much like calcium or magnesium. But the question is not so much about nutrition as it is about msm decomposition in household storage. Please leave this for discussion. —Preceding unsigned comment added by Zaqry ( talk • contribs) 19:42, 18 March 2008 (UTC)
Is MSM oxidized or reduced in household storage (or does it decompose)? —Preceding unsigned comment added by Zaqry ( talk • contribs) 22:39, 18 March 2008 (UTC)
Does MSM decompose in household storage and how (oxidation or reduction reaction for example)? —Preceding unsigned comment added by Zaqry ( talk • contribs) 18:00, 19 March 2008 (UTC)
A 50,000-watt radio station is transmitting at full power.
Thanks for the help! Franamax ( talk) 08:08, 18 March 2008 (UTC)
My understanding is
I live in Bulgaria. How do I find out whether an atomic radio clock will work in Bulgaria? Do I have to obtain one from a specific provider? —Preceding unsigned comment added by ENiklaus ( talk • contribs) 12:06, 18 March 2008 (UTC)
In a problem I'm trying to solve, there are 2 alleles, A and a. a is a defective allele, so the genotype aa induces disease. Both parents are carriers: Aa.
1) What is the probability that all three children are of normal phenotype? The way I see it, the chance of the normal phenotype in one child is 3/4, the result of a simple Aa x Aa Punnett square, so (3/4)3 = 27/64.
2) What is the probability that one or more of the children have the disease? Shouldn't it be 1/4 + 1/4 + 1/4 = 3/4?
But 27/64 + 3/4 ≠ 1 ... help! Thanks, anon. —Preceding
unsigned comment added by
70.23.85.120 (
talk) 16:48, 18 March 2008 (UTC)
In the article excepted below [and in many secondary & tertiary sources] the assertion is made that “--the Chad population was over 300,000 animals as recently as 1970 and has been reduced to approximately 10,000 as of 2006.” I have looked carefully at the publications of the African Elephant Specialist Group of the IUCN for confirmation of these figures [latest report 2007]. The IUCN folks report no data on Chad elephants before 1985. They report “no evidence” for 1981 and no figures before that time. Where did this 300,000 figure originate and who started it?
The IUCN report titled African Elephants and Rhinos: Status Survey and Conservation Report (1990) gave a 1987 estimate of between 200-400,000 elephants for Central Africa including Cameroon, Central Afr. Rep, Chad, Congo, Equat. Guinea, Gabon and Zaire [Now Dem Rep. of Congo]. Nearly half (195,000) of these animals were estimated for Zaire.
The IUCN 2007 African Elephant Status Report: An update from the African Elephant Database gives the Probable number of elephants in Central Africa as 48,936, with the Probable number from Dem Rep of Congo as only 7,955 animals. Thus Zaire (Dem Rep Congo) HAS lost 95% of the estimated elephant population from 1987 to 2007. The upper estimate for Central Africa in 1990 was 375,800. The upper estimate for 2007 is 48,936; thus an estimated loss of about 76%.
I agree with “SWAdair” that someone probably extrapolated from Central Africa data to Chad, but the loss of almost 300,000 savanna elephants from Chad could not have gone unnoticed. The figure is fictitious. Lynmil ( talk) 19:38, 24 March 2008 (UTC)
The question is what are metals called that are paramagnetic,but do not become magnetized (they are attracted by magnets, but when removed from magnetic infuences, are not magnetic)?
What metals are these? How do I reference the subject on WikiPedia?
Thank You, My Email address (removed for your protection)—Preceding unsigned comment added by 151.202.62.236 ( talk) 19:55, 18 March 2008 (UTC)
What is cyclooctatetraene? 66.81.43.129 ( talk) 21:59, 18 March 2008 (UTC)