Science & Mathematics - 17 August 2006

i wanna know why some mammals have so many colours on their body?

2006-08-17 02:13:08 · 5 answers · asked by jayant n 1 in Biology

if seen it once

2006-08-17 02:12:28 · 5 answers · asked by charl b 1 in Earth Sciences & Geology

I understand quantum physics when explained by the two slit experiment using electrons (demonstrating the wave particle duality, measurement affecting the system etc). I am reading about a similar experiment which is supposed to explain the same thing but I don't understand it. 45 degree polarised Light is incidented on an H/V polariser which splits it into vertical and horizontally polarised light, the separate beams hit two separate + and - 45 polarisers splitting each separate beam into two more beams and then onto detectors. Isn't the 45 degree polarised light already polarised? how does the H/V polariser split it into two more beams? even then, how do the beams out of the H/V polarised get further polarised by the + and - 45 polariser? and The author of my textbook is CRAP!

2006-08-17 02:09:27 · 3 answers · asked by thedudeomeister 2 in Physics

A box contains n different articles. These articles are to be divided and put into two boxes. It is also possible that all the articles are put in one box. In how many ways this can be done? What will be the case if some of the n articles are identical?

2006-08-17 02:06:45 · 5 answers · asked by Amit K 2 in Mathematics

Light can be refracted by traveling in various transparent mediums. Light is just one of the electromagnetic wave ranges. There are others, including Xrays and Gamma rays. It seems we can not focus these other kinds of rays. So I guess that they can not be refracted. Why not, are they too short?

2006-08-17 02:04:20 · 5 answers · asked by Roland O 1 in Physics

2006-08-17 02:02:43 · 34 answers · asked by ? 1 in Astronomy & Space

I want to ask you...... Which country are you living?
since the Greenhouse effect is getting worse, the temperature all overall the world is increasing day to day... what is your feeling? And how we can help this problem? Thanks soooo much for helping me!

2006-08-17 02:02:25 · 13 answers · asked by Sinderella 2 in Geography

Does anyone know if there are any pictures posted anywhere on the net of the "beast" found dead in Maine this past weekend? I can't imagine not being able to look at it and say, "Well this looks like a _______ to me". I would really like to have a look at it and see for myself what I believe it might be.

2006-08-17 01:59:08 · 11 answers · asked by Okkieneko 4 in Zoology

2006-08-17 01:57:02 · 3 answers · asked by Anonymous in Mathematics

Or at least a site of very good math trivias.

I need a trivia for a math exhibit open for everybody--not for experts only!!
Thank you very much!!

^_^

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2006-08-17 01:52:38 · 6 answers · asked by kevin! 5 in Mathematics

I am thinking if there is a planet that has the same orbit and as Earth... it might make a good story....!!

2006-08-17 01:49:07 · 7 answers · asked by 0857 1 in Astronomy & Space

So it looks as if the IAU have finally decided that Pluto should be a Planet. But the criteria they have come up with seem (I've not had time to read them carefully) to imply that a heck of a lot of other objects should now count as planets, including Pluto's erstwhile moon, Charon. Are they right??

2006-08-17 01:40:11 · 9 answers · asked by Avondrow 7 in Other - Science

explain the role ofdecomposers in the ecosystem

2006-08-17 01:39:13 · 5 answers · asked by sam_sau69 1 in Biology

2006-08-17 01:37:28 · 9 answers · asked by Anonymous in Biology

2006-08-17 01:34:04 · 2 answers · asked by Anonymous in Biology

2006-08-17 01:32:19 · 4 answers · asked by Anonymous in Geography

2006-08-17 01:25:49 · 3 answers · asked by Kavitha s 1 in Biology

what is the effects of mesh analysis and nodal analysis on multiple active linear source in a network?

2006-08-17 01:25:09 · 4 answers · asked by raissa 1 in Engineering

What are some cool phrases to insult someone without saying one cuss word and sounded hood or ghetto?? lol thx yall!

2006-08-17 01:22:00 · 18 answers · asked by Anonymous in Astronomy & Space

2006-08-17 01:16:48 · 4 answers · asked by the plug is made of awesome 3 in Physics

2006-08-17 01:12:23 · 6 answers · asked by roseann 2 in Biology

2006-08-17 01:10:40 · 16 answers · asked by Anonymous in Botany

take 'a' as 1 & 'b' as 2

2006-08-17 01:10:14 · 22 answers · asked by Anonymous in Mathematics

2006-08-17 01:09:26 · 5 answers · asked by rey 1 in Biology

2006-08-17 01:01:18 · 4 answers · asked by roseann 2 in Biology

2006-08-17 01:00:58 · 15 answers · asked by notthesharpone 2 in Geography

I have been stuck on trying to decode a mystery geocache called "Gold Bug" and would appreciate any help. Here is the link:
http://www.geocaching.com/seek/cache_details.aspx?guid=99a7fb88-4c23-43b6-b29c-61653cc9df2f

2006-08-17 00:58:46 · 1 answers · asked by Anonymous in Other - Science

2006-08-17 00:57:58 · 7 answers · asked by Anonymous in Physics

I have been trying to solve this mystery geocache called "Clas of 43" on geocaching.com and would appreciate any help. The part I am stuck on is calculating the distance the cannon ball travels. If I can get that right, I can solve the rest of the mystery using the great circle calculator link on the cache page. Here is a link to the cache:
http://www.geocaching.com/seek/cache_details.aspx?guid=55b5bf3a-1a0f-482f-93dc-2341dede5ebb

2006-08-17 00:55:58 · 4 answers · asked by Anonymous in Geography

I have been trying to solve this mystery geocache called "Clas of 43" on geocaching.com and would appreciate any help. The part I am stuck on is calculating the distance the cannon ball travels. If I can get that right, I can solve the rest of the mystery using the great circle calculator link on the cache page. Here is a link to the cache:
http://www.geocaching.com/seek/cache_details.aspx?guid=55b5bf3a-1a0f-482f-93dc-2341dede5ebb

2006-08-17 00:55:10 · 3 answers · asked by Anonymous in Mathematics