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Unformatted text preview: 2 . Now, the angles in the triangle ABC must add to 180 : 180 = 2 2c + = 2 = 2 . Also, the angles in the triangle ADC must add to 180 : 180 = 2 ( 2 ) + s = = 90 + 2 1 2 s which simplies to = 2 + 1 2 . Combining this with our previous result, we nd = 1 2 ( + ). Thus, the law of refraction yields n = sin( ) sin( 2 ) = sin ( 1 2 ( + ) sin ( 1 2 ) ....
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 Fall '08
 SPRUNGER
 Physics, Light

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