A micrometer is connected to the movable mirror of
Chapter 34, Problem 34.41(choose chapter or problem)
A micrometer is connected to the movable mirror of aninterferometer. When the micrometer is tightened down ona thin metal fo il, the net number of bright fringes that move,compared to the empty micrometer, is 272. What is thethickness of the foil? The wavelength of light used is589 nm.
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