Dispersion of light In 1665, Isaac Newton discovered that white light consists of seven colours. He found that if a beam of white light is passed through glass prism then it will split in to seven ...

Here, triangular prisms are often used in opposing pairs to compensate for the dispersion each individual prism applies to the light. Prism Materials. As spectroscopy makes use of most of the regions ...

White light can be split up into a spectrum of these colours using a triangular ... This means that the light leaving the prism is spread out into its different colours, a process called dispersion.