Physics, 08.04.2021 20:30 trinidadevelyn
In this problem one fringe shift is defined to mean from a bright pattern to the next dark pattern and not bright to dark and back again to a bright, which would be two fringe shifts. These fringe shifts occur because the wavelength of the light changes inside the gas filled tube. Assume that 695 nm light is used, the tube is 4.46 cm long, and that 279 fringe shifts occur as the pressure of the gas in the tube increases to atmospheric pressure. Calculate ngas, the index of refraction of the gas.
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