Question

where does a rainbow come?

Answer 1

Rainbows happen when sunlight and rain combine in a very specific way. The beams of sunlight separate into the colors we see in the rainbow as they enter a raindrop. Sunlight is actually made up of different colors that we don't usually see. When a beam of sunlight comes down to Earth, the light is white.

Answer 2

Rainbows are actually a trick of geometry and not only happen after rainfall, but require a certain angle to be reached before they canappear. Rainbows are formed when sunlight goes into a raindrop, bounces out of it, and refracts into the 7 colors of visible light.