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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