[Back] - [EMR Index] - [<] - [1] - [2] - [3] - [4] - [5] - [6] - [>]

3 - Separating Light

For a long time, we took light for granted. Only 300 years ago, Issac Newton discovered that it spreads out into a spectrum when it passes it through a prism.

visible light spectrum

Ever since Newton, we have thought of light as a mixture of colours of different wavelengths.