The sky is blue because air scatters short-wavelength light in preference to longer wavelengths. When we look toward a part of the sky not near the sun, the blue color we see is blue light waves scattered down toward us from the white sunlight passing through the air overhead. Near sunrise and sunset, most of the light we see comes in nearly tangent to the Earth's surface, so that the light's path through the atmosphere is so long that much of the blue and even yellow light is scattered out, leaving the sun rays and the clouds it illuminates red.
Scattering and absorption are major causes of the attenuation of radiation by the atmosphere. Scattering varies as a function of the ratio of the particle diameter to the wavelength of the radiation. When this ratio is less than about one-tenth, Rayleigh scattering occurs in which the scattering coefficient varies inversely as the fourth power of the wavelength. At larger values of the ratio of particle diameter to wavelength, the scattering varies in a complex fashion described, for spherical particles, by the Mie theory; at a ratio of the order of 10, the laws of geometric optics begin to apply.
2007-03-06 06:18:30
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answer #1
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answered by Cle@r Sky 07 3
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The reason that the sky is blue has to do with light fragmentation. When the sun rays enter the atmosphere they are refracted by scattering. When this refraction takes place they appear to be the color which has the shortest wavelength which is blue.
2007-03-06 13:52:42
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answer #2
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answered by Mark L 1
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This question has now been asked 1532 times - and still people give the wrong answer about the sky reflecting the ocean.
Cle@r Sky 07 is correct
2007-03-06 17:24:13
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answer #3
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answered by tentofield 7
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The sky is blue because it is made of mostly nitrogen. Nitrogen in the atmosphere absorbs light from the sun. When the nitrogen atoms absorb the light, the nitrogen atom will then quickly give of the energy again. It gives off this energy at certain very specific wavelengths. One of these wave lengths our eyes see as the color blue. It all has to do with energy absorption and quantum mechanics.
2007-03-06 14:43:30
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answer #4
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answered by Arc T 2
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The suns rays bounces off the oceans color and reflects off the mirrors of the sky...does that answer your question.
2007-03-06 13:34:56
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answer #5
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answered by Lucia (I love Spanish Class!) 2
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