Light

Tuesday, March 14, 2006

Colour

Ordinary light (also called white light) is a mixture of different colours. When a beam of white light passes through a glass prism, the light splits up into colours as seen in rainbow. These colours are called the spectrum of white light. The separation or splitting of white light into its separate colours is called dispersion. Rainbow consists of Red, Orange, Yellow, Green, Blue, Indigo and Violet. A rainbow is formed when sunlight(white light) passes through raindrops.

There are two ways to see white light by combining the colours together:
-By using a second prism
-Spinning a colour wheel (also called a Newton's disc)

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