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Why does the sky appear blue?



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Well, I know this reason, but this link will tell you more clearly about the concept.

http://math.ucr.edu/home/baez/physics/General/BlueSky/blue_sky.html
Answered
V.Arunkumar Can you give me us a clear explanation of what it is rather than to see it in the link. - V.Arunkumar - 8 years ago
V.Arunkumar According to Rayleigh scattering law, the amount of scattering is inversely proportional to the fourth power of wavelength. Hence violet light is scattered more and red light is scattered the least. But since the wavelength of violet light is so less, it cannot reach earth. Hence the sky appears blue. - V.Arunkumar - 8 years ago


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Most probably due to refraction the colour of the sky appears blue.
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The sky appears in blue colour because the molecules in the air scatter blue light from the sun that that of other colours.
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Due to refraction of light of sun our sky appears as blue.
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A clear cloudless day time, sky appears blue because molecules in the air scatter blue light from the Sun more than they scatter red light.

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