PHY213_Chapter25_Sec7

PHY213_Chapter25_Sec7 - Chapter 25 Optical Instruments...

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Chapter 25 Optical Instruments
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General Physics Michelson Interferometer Section 7
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General Physics Michelson Interferometer The Michelson Interferometer is an optical instrument that has great scientific importance It splits a beam of light into two parts and then recombines them to form an interference pattern It is used to make accurate length measurements
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General Physics Michelson Interferometer, schematic A beam of light provided by a monochromatic source is split into two rays by a partially silvered mirror M One ray is reflected to M 1 and the other transmitted to M 2 After reflecting, the rays combine to form an interference pattern The glass plate ensures both rays travel the same distance through glass Active Figure: The Michelson Interferometer
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General Physics Measurements with a Michelson Interferometer The interference pattern for the two rays is determined by the difference in their path lengths When M 1 is moved a distance of
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PHY213_Chapter25_Sec7 - Chapter 25 Optical Instruments...

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