René Descartes, a contemporary of Snell but working independent of him, also studied refraction in ... at which it emerges from the raindrops. Most commonly, a rainbow is seen as a single arching ...

This is called refraction. This can happen ... you and the rain in front of you, you see a rainbow of colours reflected back from inside the raindrops. As well as the lovely colours, rainbows ...

(KTAL/KMSS) – Did you see an epic rainbow over ... water droplets through refraction. Which occurs when light from the sun changes direction when passing through a raindrop.