P1.2 - Refracting Telescopes

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Refraction

Light travels in straight lines . However ,it can change direction when it moves into a different material. This is called REFRACTION.

(http://hsc.csu.edu.au/biology/options/communication/2951/953-1.gif)

Refraction in lenses

A lens is a transparent that has been shaped so that its interface changes the directions of parallel light waves.

A coverging/convex lens is a glass block that is curved on both…

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