How are rainbows formed from sunlight and water?

In the sunny moments after a rain storm, colors fill the sky in an optical illusion involving the refraction and reflection of light. And that's how rainbows are formed.

Are specific conditions needed for Rainbow to occur? - Quora

What Is a Rainbow?

What Is a Rainbow?

What Causes a Rainbow? NOAA SciJinks – All About Weather

Rainbows (Water and Light)

How are rainbows formed from sunlight and water?

How Are Rainbows Formed? - Athena Scholar

Rainbow is formed due to

How Rainbow Is Formed?

Twinned Rainbows Formation Explained By New Research