Rainbows can sometimes appear after storms, but how are these colorful weather displays created?
"Only three things are needed to make a rainbow: sunlight, water, and, surprisingly, you," AccuWeather explained. "Sunlight contains all the colors in the visible light spectrum." That sunlight comes through the raindrops, which act as "reflectors because of how the light passes through them."
[Ads /]
Each raindrop can only reflect one color, so you'll need millions of them to have many colors in a rainbow. The angle you're looking at a rainbow from will determine what colors you'll be able to see.
A rainbow, though, doesn't actually exist in a physical space,. "It's just an optical illusion from the sun reflecting in the water drops," AccuWeather said.