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.

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. A rainbow forms when sunlight is refracted ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. Can rainbows form in a circle? – Henry D., age 7 ...

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 ...

There are a few things you need to see a rainbow. The main things are water droplets and sunlight. The water droplets need to be illuminated by bright sunshine and they must also be in the right ...