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Unformatted text preview: This week Please hand in HW4 Lab3 lab report due next week Today we continue lab 3 Sarah Eno 2 Interference Two different physically separated sources make waves their waves go out from the sources with a velocity v. What happens then the waves meet? When Waves Collide Superposition Suppose E 1 and E 2 are both solutions of Maxwell's equations in free space 2 E 1 = 1 c 2 2 t 2 E 1 2 E 2 = 1 c 2 2 t 2 E 2 then E= E 1 + E 2 is also a solution 2 E 1 + E 2 ( ) = 1 c 2 2 t 2 E 1 + E 2 ( ) Not just for E&M waves. Works for any phenomena that produces a wave equation, for example sound waves. Superposition and traveling waves Sarah Eno 5 Superposition in 1D Principal of superposition: when two waves enter the same area, the resultant wave is the sum of the two initial waves. The waves do not disturb or affect each other. For plane waves of the same frequency, interference is constructive or destructive depending on the phase. Interference of plane waves E 1 = E 01 cos( k...
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This note was uploaded on 12/29/2011 for the course PHYSICS 375 taught by Professor Eno during the Spring '11 term at Maryland.
 Spring '11
 ENO
 Physics

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