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ACCESS– Summer 2014 Interference of Light

ACCESS– Summer 2014 Interference of Light. Gernot Laicher University of Utah - Department of Physics & Astronomy. For small angles. y min = radius of first dark ring q = diameter of hole d = distance from hole to screen. d sin Q n (= difference in path length). Q n. d. Diffraction

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ACCESS– Summer 2014 Interference of Light

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  1. ACCESS– Summer 2014Interference of Light GernotLaicher University of Utah - Department of Physics & Astronomy

  2. For small angles ymin = radius of first dark ring q = diameter of hole d = distance from hole to screen

  3. d sin Qn (= difference in path length) Qn d Diffraction grating Whenever d sin Qn =  ml : All waves are in phase  (constructive interference); m = 0,1,2…. Otherwise they cancel each other (destructive interference). Different l means constructive interference for different Qn !

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