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12 October, 13:07

Explain how light travels

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  1. 12 October, 14:58
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    Light is a type of energy called an electromagnetic wave. This means that it travels through the atmosphere in these waves, which normally can only go in a straight line. It can only change direction via reflection or refraction but not of it's own accord. Light travels very rapidly, one wave could circle the globe 7.5 times in a second.
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