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Unformatted text preview: 78. The law of refraction requires that
sin θ1/sin θ2 = nwater = const.
We can check that this is indeed valid for any given pair of θ1 and θ2. For example sin
10° / sin 8° = 1.3, and sin 20° / sin 15°30' = 1.3, etc. Therefore, the index of refraction of
water is nwater = 1.3. ...
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 Spring '08
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 Physics

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