Question: why is ranbows diffrent colours

Sive Finlay answered on 14 Nov 2013:

Hi Jamal,
Michael already answered the question but basically it’s all to do with how sunlight passes through water droplets.
What we see as white light is actually made up of a spectrum of lots of colours of different wavelengths. You can see this if you get a colour wheel and spin it really fast – eventually all different colour wavelengths blend together and look white.
When sunlight passes through water droplets they break up the white light into the colours of different wavelengths (like a prism) and then these coloured wavelengths are reflected off the water droplet so we see lovely coloured rainbows.
Sive