Two source interference

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Presentation transcript:

Two source interference constructive interference ------- destructive interference -------

Two source interference Path difference = S2P – S1P = 1 wavelength =  P constructive interference ------- destructive interference ------- S1 S2

Two source interference Path difference for constructive interference = n  (where n is an integer)  2  3 constructive interference ------- destructive interference -------

Two source interference Path difference for destructive interference = (n + ½)  (where n is an integer) ½ 1½  2½  constructive interference ------- destructive interference ------- Free powerpoints at http://www.worldofteaching.com

Two source interference The path difference is n for constructive interference (n + ½)  for destructive interference

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