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9 September, 13:33

Which cross-section from the possibilities below matches what would be needed to make the fringe pattern seen?

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  1. 9 September, 14:04
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    The highly top of the film expose no reflected light, meaning that the thickness less than 1/4 the wavelength of visible light within the film, since the phase change on reflection for the beam from the first surface of the film is %u03C0 radians and the phase change of reflection from the second surface of the film is 0 radians, substance the interfering rays basically out of phase from that part of the film. Given this facts.
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