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JSS3: BASIC SCIENCE - 2ND TERM

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Dispersion is the separation of white light into its component colours. The dispersion is due to the fact that the different colours of white light travel at different speeds through a glass prism. Some materials are able to disperse light into different components.

When white light falls on a triangular glass prism, the prism bends the rays as well as producing a coloured band and this band is made up of the different colours found in the rainbow (The colours of the rainbow are Red, Orange, Yellow, Green, Blue, Indigo, and Violet). The series of colour is called a Spectrum. In this case, we describe the spectrum as the visible spectrum because it can be seen.

Other materials that can disperse light is the air after rainfall in which the seven components of light are seen in the sky. This is called a Rainbow.

Dispersion
Dispersion of white light

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