You can use a prism to split (or disperse) white light into a spectrum of colours: red, orange, yellow, green, blue, indigo and violet. Dispersed means that the colours are separated out.

In art lessons, you might have learned about the three primary colours of paint which are different to the primary colours of light. In art they are: red, yellow and blue. Mixing the primary ...

The colors that wind up there are longer wavelengths of light — red, orange, yellow — which withstood ... Shorter wavelengths of the color spectrum, like blue, scatter easily when they hit ...