In Fig. 4.49 the curve of r ¥ approaches -1.0 as the angle-of-incidence approaches 90°. Prove that

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In Fig. 4.49 the curve of rŠ¥approaches -1.0 as the angle-of-incidence approaches 90°. Prove that if αŠ¥is the angle the curve makes with the vertical at θi= 90°, then 

V – 1 tan a1 2 2.

[First show that dθt/dθi = 0.]

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Optics

ISBN: 978-0133977226

5th edition

Authors: Eugene Hecht

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