Monochromatic light incident upon a Fabry-Perot Interferometer/Etalon. The wavelength of the light is 450 nm, the thickness of the slab is 0.500 cm, the index of refraction of the slab is 1.49, and the reflectivity of the surfaces is varied.

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Monochromatic light incident upon a Fabry-Perot Interferometer/Etalon. The wavelength of the light is 450 nm, the thickness of the slab is 0.500 cm, the index of refraction of the slab is varied, and the reflectivity of the surface is 62.5%.