The sky is blue at noon, red at sunset, white where the clouds are, and black in space — all from the same sunlight. This short course explains the handful of light-and-air interactions behind it: why air scatters blue light, why a low sun turns red, why cloud droplets look white, and how raindrops bend sunlight into a rainbow.
The sky is blue at noon, red at sunset, white where the clouds are, and black in space — all from the same sunlight. This short course explains the handful of light-and-air interactions behind it: why air scatters blue light, why a low sun turns red, why cloud droplets look white, and how raindrops bend sunlight into a rainbow.
