why is the sky blue?

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why is the sky blue?

2006-11-01 07:18:01 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology

3 answers

light scattering 101.

2006-11-01 07:20:26 · answer #1 · answered by pkababa 4 · 0⤊ 1⤋

It's due to a phenomenon called Rayleigh scattering. When light encounters particles much smaller than the wavelength of light, the light scatters. Atmospheric gas is an enormous resevoir of such particles. Short wavelengths scatter the most effectively, and blue has a short wavelength, so the blue light scatters and appears to fill the sky. Note that violet has a shorter wavelength than blue, but the human eye is not very good at seeing violet, so blue appears to dominate instead.

2006-11-01 15:20:46 · answer #2 · answered by DavidK93 7 · 0⤊ 0⤋

Because the sea is blue.

2006-11-01 15:39:52 · answer #3 · answered by Twinkle T 1 · 0⤊ 1⤋