Rainbow

A rainbow is an optical phenomenon caused by refraction, internal reflection and dispersion of light in water droplets resulting in a continuous spectrum of light appearing in the sky. The rainbow takes the form of a multicoloured circular arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun.

Extends: Rainbow, [Atmospheric optical phenomena](https://wikipedia.org.ai/Atmospheric optical phenomena), [Atmospheric sciences](https://wikipedia.org.ai/Atmospheric sciences), [Heraldic charges](https://wikipedia.org.ai/Heraldic charges), [LGBTQ symbols](https://wikipedia.org.ai/LGBTQ symbols)