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Two source interference

Two source interference. constructive interference -------. destructive interference -------. Two source interference. – S 1 P. S 2 P. Path difference =. = 1 wavelength. = . P. constructive interference ------- destructive interference -------. S 2. S 1.

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Two source interference

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  1. Two source interference constructive interference ------- destructive interference -------

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

  3. Two source interference n  Pathdifference for constructive interference = (where n is an integer) 0  2 3 constructive interference ------- destructive interference -------

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

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

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