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Concave lens - physics experiment

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  • Provider: YouTube Link: http://www.youtube.com/watch?v=tjQ6HRNynsk
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    Lens that possesses at least one surface that curves inwards. It is a diverging lens, spreading out those light rays that have been refracted through it. A concave lens is thinner at its centre than at its edges, and is used to correct short-sightedness (myopia).
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