Answer: The principal indication given by a double bow is that the raindrops that are refracting and reflecting sunlight are of medium to large size, rather than being very small or tiny droplets.

MACON, Ga. — Rainbows have stretched across Central Georgia all summer, and here is a look as just a few viewers have sent in. These rainbows come in all different shapes and sizes. It may even ponder ...

MACON, Ga. — A rainbow forms when sunlight enters a raindrop. When this happens, sunlight bounces around the raindrop and changes speed and direction. That's called refraction. These changes also ...