Physics
Physics, 17.06.2020 20:57, pacpac1172

A Michelson interferometer operating at a 400 nmnm wavelength has a 3.95-cmcm-long glass cell in one arm. To begin, the air is pumped out of the cell and mirror M2M2 is adjusted to produce a bright spot at the center of the interference pattern. Then a valve is opened and air is slowly admitted into the cell. The index of refraction of air at 1.00 atmatm pressure is 1.00028. How many bright-dark-bright fringe shifts are observed as the cell fills with air?

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A Michelson interferometer operating at a 400 nmnm wavelength has a 3.95-cmcm-long glass cell in one...

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