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Light waves can also be made using a laser.

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Dispersion allows us to work out what stars are made of by looking at the mixture of wavelengths in the light.

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White light is actually made up of colours, mixed together,

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too much light can damage the retina in your eye. Although the damage can heal, if it is to bad it can be permanent

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As the Sun sends so much light towards our planet. we've evolved to make use of those particular wavelengths in order to sense our environment.

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They are given off by anything thats hot enough to glow.