You know. i was lookin at the sky yesterday..and i asked myself..why is the sky blue ?

Question

You know. i was lookin at the sky yesterday..and i asked myself..why is the sky blue ?

Answer 1

well there is a story here's the short version

the oceans wanted color so the sky's rainbow lent the ocean color so that's how our fish got there color so in return the ocean lent the sky blue

and that's the short version

Answer 2

well during daylight sky appears to be of a deep blue surface, as the result of the air's scattering of sunlight which in turn results in a light blue color perceived by the human eye

Answer 3

Because light from the sun is scattering by atoms and molecules in the atmosphere.

Light scattering by particles depends on the relative "sizes" of the photons and the particles.

In the case of visible light, molecules are much smaller than the wavelength of light, so blue light gets scattered much more than red light.

So as light from the sun enters the atmosphere, more blue photons get reflected (not absorbed) by molecules than red photons - but then the blue photons get reflected again and again until they reach us. So the blue light comes from all over, the red light comes almost straight from the sun.

This is also why the sun looks redder at sunrise and sunset - the light's path through the atmosphere is longer when the sun is on the horizon than when it is high in the sky.

Interaction of light with the atmosphere does all sorts of weird and wonderful things that physics can explain:

http://hyperphysics.phy-astr.gsu.edu/Hba...



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