The blue color of the sky is due to Rayleigh scattering. As light moves through the atmosphere, most of the longer wavelengths pass straight through. Little of the red, orange and yellow light is affected by the air.
However, much of the shorter wavelength light is absorbed by the gas molecules. The absorbed blue light is then radiated in different directions. It gets scattered all around the sky. Whichever direction you look, some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead, the sky looks blue.
As you look closer to the horizon, the sky appears much paler in color. To reach you, the scattered blue light must pass through more air. Some of it gets scattered away again in other directions. Less blue light reaches your eyes. The color of the sky near the horizon appears paler or white.
2006-12-06 16:30:07
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answer #1
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answered by valerie 2
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Okay, here's the real answer: when the sun's light shines through the Earths atmosphere, it goes through the water particles in the air. The water particles act like a sort of "prism", but it is seen as blue visible light, not the whole rainbow. Therefore, due to the water in the air, the whole sky is blue. Hope that helped.
2006-12-06 19:29:22
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answer #2
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answered by Dana Mulder 4
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The sky is blue due to the way light refracts, difracts, and dissipates through the atmosphere. Blue light has a higher energy and penetrates further into the atmosphere. Red light tends to get absorbed. Water is blue because it reflects the sky and also filters out red light in it's own right.
2006-12-06 19:11:38
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answer #3
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answered by CurazyJ 2
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The sky is techinally not blue. It merely reflects the color of water. These reflections cover large areas.
2006-12-06 19:05:52
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answer #4
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answered by Fyrebyrd 3
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refraction of sunlight on the water vapor rich atmosphere
2006-12-07 00:35:20
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answer #5
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answered by Frank M 2
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I used to know this answer in 6th grade.... drat!... forgot...
2006-12-06 19:07:50
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answer #6
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answered by Anonymous
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