Rainbows form when sunlight from behind you hits millions of tiny round water ... you might see a rainbow. It is not difficult to see colors, but to see a full circle, you will need some patience ...

Rain droplets are round, so the light passing through them follows the circular shape - it's possible to see a full circle rainbow if you're stood on top of a mountain or on a plane. A staple part ...

If you were high up in a plane, or up a mountain, you would see a rainbow as a full circle. The next time it is a sunny day you can even create your own rainbow! If you use a water spray or hose ...