Saturday, 1 August 2015

Tell Me Why Does Rainbow Have 7 Colors ? - Nature Facts

A rainbow has seven colors because water droplets in the atmosphere break sunlight into seven colors.When light leaves one medium and enters another, the light changes its propagation direction and bends.

Professor,Tell me how is a rainbow formed?
Ordinary white light like sunlight is made up of many different colours. But we cannot see the different colours as sunlight appears colourless. But if we pass the white light through a prism or a piece of glass, the white light splits into a band of colours. This band of colours is called a spectrum and it contains all the colours of the rainbow.

When it rains, the raindrops act like prisms of glass. When sunlight passes through the raindrops, it breaks up into its spectrum and we see all the colours of the rainbow.

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