When blue light goes through a prism what happens?

Blue light enters the prism and is refracted (bent) by the glass and emerges as blue light on the other side. Blue light is bent (refracted) most due to its slow(er) speed than say Red light which is faster and has a longer wavelength. Newton did an experiment like this and concluded that white light was made up of different colours of light together. Shine a white light through a prism and it will emerge as all the colours of the rainbow. Blue light is unchanged as it consists only of blue light Answered by Chris Banks.