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2007-06-19 14:01:21 · 9 answers · asked by stewartembrey 1 in Science & Mathematics Earth Sciences & Geology

9 answers

http://math.ucr.edu/home/baez/physics/General/BlueSky/blue_sky.html

you should have taken the time to see this question answered 100 times. but being that I am a good contributor I give you this link to do your research.

2007-06-19 16:41:30 · answer #1 · answered by Kristenite’s Back! 7 · 2 0

The light coming from the sun is white; that is, all colors. When the blue light hits the earth's atmosphere it is just the right wave length to disperse all over the sky in the atmosphere. The remaining light coming from the sun in a straighter line looks more yellow than white because the blue light has been dispersed and only the rest of the colors are coming straight at you.

2007-06-19 21:09:09 · answer #2 · answered by Joan H 6 · 0 0

Blue light scatters off the air much more than red light. Blue light that would miss you completely if there were no atmosphere is instead redirected in all directions. Therefore, blue light hits your eyes from every direction at once. The red light hits your eyes only from the direction the Sun is in.

Therefore, the Sun appears yellowish-white, and the sky appears blue. The bluest part will be at 90 degrees from Sun.

2007-06-19 21:10:28 · answer #3 · answered by lithiumdeuteride 7 · 1 0

when we look up at the sky on a clear day,you can see the sun as bright disk. The blueness you see everywhere else is all atoms in the atmosphere scattering blue light toward you. Because the red light, yellow light, green light, and the other colors aren*t scattered nearly as well, hence you see the sky blue.

2007-06-19 21:25:06 · answer #4 · answered by tanting 2 · 0 0

I answer few days ago de same question:
Why is the sky blue?
A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.
The white light from the sun is a mixture of all colours of the rainbow. This was demonstrated by Isaac Newton, who used a prism to separate the different colours and so form a spectrum. The colours of light are distinguished by their different wavelengths. The visible part of the spectrum ranges from red light with a wavelength of about 720 nm, to violet with a wavelength of about 380 nm, with orange, yellow, green, blue and indigo between. The three different types of colour receptors in the retina of the human eye respond most strongly to red, green and blue wavelengths, giving us our colour vision.

Tyndall Effect
The first steps towards correctly explaining the colour of the sky were taken by John Tyndall in 1859. He discovered that when light passes through a clear fluid holding small particles in suspension, the shorter blue wavelengths are scattered more strongly than the red. This can be demonstrated by shining a beam of white light through a tank of water with a little milk or soap mixed in. From the side, the beam can be seen by the blue light it scatters; but the light seen directly from the end is reddened after it has passed through the tank. The scattered light can also be shown to be polarised using a filter of polarised light, just as the sky appears a deeper blue through polaroid sun glasses.

This is most correctly called the Tyndall effect, but it is more commonly known to physicists as Rayleigh scattering--after Lord Rayleigh, who studied it in more detail a few years later. He showed that the amount of light scattered is inversely proportional to the fourth power of wavelength for sufficiently small particles. It follows that blue light is scattered more than red light by a factor of (700/400)4 ~= 10.

2007-06-19 21:54:33 · answer #5 · answered by Bernar 3 · 0 0

Light particles bounce of the gasses in the atmosphere

2007-06-19 21:09:08 · answer #6 · answered by Anonymous · 0 0

ive heard because the sunlight reflects off the water...or maybe because of what the atmosphere itself is mad of, reflect blue light better than it does other colors

2007-06-19 21:05:10 · answer #7 · answered by justin m 1 · 0 0

It has to do with Rayleigh Scattering

2007-06-19 21:07:37 · answer #8 · answered by Erick 1 · 0 0

So you know where to stop mowing
Tina

2007-06-19 21:06:39 · answer #9 · answered by TunaFish 6 · 0 0

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