Reflection and Refraction of Light26122.57Refer to the figure given at the right. ()()1243minδαεθθθθ=+=−+−abcbcdNote that triangles and are congruent. Therefore, βγ=23and their complementary angles are also equal, or θθ1sinn=. From Snell’s law at point a, 2sinθθ=(1) and at point d, 43sinsinnθθ=Since 23θθ=, comparison of these results shows that
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