Question: What causes a rainbow?? Your eye brows are on fleek bro;) #Slay

Nicholas Pearce answered on 7 Nov 2015:

Hey,

We don’t usually think of sunlight as being coloured, but really it’s a mixture of the colours we see in a rainbow. When a beam of sunlight (which is white) passes through a prism, it slows down, causing it to change direction. Some colours slow down more than others and change direction more, splitting the light into a rainbow, like in this picture:
Raindrops do exactly this-separating out the colours of light and sending them to your eye. Each raindrop can only send you a little bit of light so you might see red light from a few drops, green from another few and so on until you have a complete rainbow.

Rainbows have their shape because they can only bend the light in your direction from a certain angle (raindrops not at this angle will send the light somewhere else) and all the raindrops that happen to be at just the right angle make up that ‘bow’ shape.

Here’s a short youtube explaining more about the colours of rainbows:

And thanks bro, it’s nice to know I have some eyebrow game.