Question: What would happen if you shine a red laser light into something that splits the colour's in normal light. (Hopefully you understand my question!) (P.S. I voted for you!)

Dervil Cody answered on 16 Nov 2016:

Hi! Thanks for the vote 🙂

I think I understand what you’re saying, you’re asking what would happen if you shine a laser into say a prism, which usually splits white light up into the different colours! Nothing too interesting I’m afraid. Lasers work so well for lots of different applications because they produce light which is one really specific colour only. So the red laser light would pass through the prism and look the exact same colour, although it would be bent at a small angle by the prism.