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The Michelson Interferometer Experimental Setup

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The Michelson Interferometer Experimental Setup

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Albert A. Michelson won the 1907 Nobel Prize in Physics for his optical precision instruments and the spectroscopic and metrological investigations carried out with their aid. One of his instruments was the Michelson interferometer. The Michelson interferometer produces interference fringes by splitting a beam of monochromatic light so that one beam strikes a fixed mirror and the other a movable mirror. When the reflected beams are brought back together, an interference pattern results. (See photo below.) Precise distance measurements can be made with the Michelson interferometer by moving the mirror and counting the interference fringes that move by a reference point.

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