The sky is blue — physicists tell us — because blue light in the sun's rays bends more than red light. But this extra bending, or scattering, applies just as much to violet light, so it is reasonable to ask why the sky isn't purple.
The sky is blue — physicists tell us — because blue light in the sun's rays bends more than red light. But this extra bending, or scattering, applies just as much to violet light, so it is reasonable to ask why the sky isn't purple.
