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2007-05-09 14:33:36 · 22 answers · asked by Anonymous in Health General Health Care Other - General Health Care

22 answers

Because:http://answers.yahoo.com/search/search_result;_ylt=AjYlDL0eujANs.l6uMnSeZFJxQt.?p=Why+is+the+sky+blue%3F%3F%3F%3F

2007-05-09 14:37:27 · answer #1 · answered by Anonymous · 0 0

Here is something interesting to think about: When you look at the sky at night, it is black, with the stars and the moon forming points of light on that black background. So why is it that, during the day, the sky does not remain black with the sun acting as another point of light? Why does the daytime sky turn a bright blue and the stars disappear?

The first thing to recognize is that the sun is an extremely bright source of light -- much brighter than the moon. The second thing to recognize is that the atoms of nitrogen and oxygen in the atmosphere have an effect on the sunlight that passes through them.

There is a physical phenomenon called Rayleigh scattering that causes light to scatter when it passes through particles that have a diameter one-tenth that of the wavelength (color) of the light. Sunlight is made up of all different colors of light, but because of the elements in the atmosphere the color blue is scattered much more efficiently than the other colors.

So when you look at the sky on a clear day, you can see the sun as a bright disk. The blueness you see everywhere else is all of the atoms in the atmosphere scattering blue light toward you. (Because red light, yellow light, green light and the other colors aren't scattered nearly as well, you see the sky as blue.)

2007-05-09 21:40:18 · answer #2 · answered by Anonymous · 0 0

Well, this is not exactly a health question... Longer wavelengths of light defract more easily than shorter wavelengths. If you think back to the whole ROY G BIV mnemonic, it's a little easier to remember the spectrum and the order of wavelengths. Blue light has a shorter wavelength and is defracted more than other wavelengths. Thus, it is refracted in the sky by particles of moisture, gas, and ozone and we see the refracted blue light and call it the sky!
Note: Physicists love to point out that an object is actually all "colors" or wavelengths except the ones that you see since you only see the wavelengths reflected or refracted by an object. The object "absorbs" all the other wavelengths.

2007-05-09 21:40:41 · answer #3 · answered by TigerGirl 2 · 0 0

the sky is full of moisture like the sea and the sea is blue from all the water . in the sky the sunlight is reflected though the moisture so it looks blue

2007-05-09 21:38:41 · answer #4 · answered by chotpeper 4 · 1 1

When it's morning, there's a mix of colors in the atmosphere, the sun rays and the space color. Those colors mix together to give us a light blue color.

2007-05-09 21:39:02 · answer #5 · answered by Ines F 2 · 0 0

well if you really wanna know. when sunlight hits the oxygen molecules in the air all the colors absorb except for blue which reflects back and thats how you see it... that and god wanted it to be blue lol

2007-05-09 21:40:02 · answer #6 · answered by Cody R 1 · 0 1

It is actually every color BUT blue. Our human eyes register the one color it can't absorb. That's what makes something a particular color, the one color that something kicks back from the color band because of it's chemical composition which it cannot absorb. Black is black because it refracts pretty much nothing. White is white because it refracts everything.

2007-05-09 21:39:10 · answer #7 · answered by ioannacardish 3 · 0 1

Why do we bleed red ??? Why does the sun go on shinning ??? This is beginning to sound like a song !!!

2007-05-09 21:42:04 · answer #8 · answered by Anonymous · 0 0

believe it or not all the different gasses in our air make up the color blue

2007-05-09 21:37:36 · answer #9 · answered by D4Ni3L 2 · 0 0

light travelling through inert gasses in the photosphere

2007-05-09 21:38:16 · answer #10 · answered by rick r 4 · 0 0

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