Why rainbows form as circles

Few things in nature are as instantly recognizable as a rainbow. 

For thousands of years, rainbows have inspired myths, religion, art, and science. 

Yet behind those bands of color is an extraordinary interaction between sunlight, water, geometry, and the physics of light itself. 

From double rainbows to full circular rainbows seen from aircraft, the science behind them is far more fascinating than most people realize. 

Learn more about rainbows and how they work on this episode of Everything Everywhere Daily.

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