Seen in Norfolk: What causes double rainbows?

A Weather & Radar user captured this stunning double rainbow last week, but do you know what leads to their appearance?

Earlier this week we looked at what leads to the creation of regular rainbows, so how do we end up seeing double?

Sometimes you can see another so-called secondary rainbow next to the main rainbow. This is located above the main rainbow at an angle of 51 degrees.

The second rainbow is created by another reflection within the raindrop. The path of the light is thus longer and part of the light is lost.

Therefore, the second rainbow appears only fainter, if at all.

At the same time, the colours in the secondary rainbow are arranged in reverse to those in the main rainbow.

Captured a double rainbow near you? Send it in to us using the uploader!