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→About Refraction
: [[Wave]]s travel in a straight line until they reach a new [[medium]]. If the [[wave]] can travel through the new [[medium]] it will change direction. This is called [[refraction]].
: [[Refraction]] can happen to all [[wave]]s.
: [[Refraction]] is used in [[lens]]es to [[magnify]] and [[focus]] [[light]].
===Refraction of Light===