File:Constructive and Destructive Interference.gif
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Diagram illustrating constructive and destructive interference of red light incident on a thin film of varying thickness -- from less than 1/4 wavelength to greater than 1/2 wavelength. See Francis Weston Sears, Optics, Addison-Wesley, 1949, for more information. Produced January 2006 by Patrick Edwin Moran.
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