P18_093 - 93 The source being isotropic means Asphere = 4r2...

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93. The source being isotropic means A sphere =4 πr 2 is used in the intensity defnition I = P/A .S i n c e intensity is proportional to the square oF the amplitude (see Eq. 18-27), this Further implies I 2 I 1 = µ s m 2 s m 1 2 = P/ 4 πr 2 2 P/ 4 πr 2 1 = µ r 1 r 2 2 or s m 2 /s m 1
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.

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