AUGUSTA, GA (WFXG) - Rainbows are one of nature's most spectacular light shows. But they're actually an optical illusion so you have to be in the right place at the right time to see one.
White light is made up of many colors. We're able to see those colors in a rainbow. You need 2 things to see a rainbow: light and water droplets.
The conditions have to be just right, otherwise, we'd see rainbows all the time! First, the sun has to be behind you and there has to be rain or water droplets still in the air.
As light enters a raindrop, it is refracted, or bent. If it's bent at a 42-degree angle, the light separates into the colors of the rainbow.
Rainbows are typically a full circle, but from the ground, we can usually only see part of the arc.
Double rainbows form when light is reflected twice inside a rain drop.
The secondary rainbow is fainter, and the colors are actually reversed, with red on the bottom and violet on top.
Happy rainbow hunting!