Physics, 21.01.2021 22:40 brooklyn4932

What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 565 nm ? The index of refraction of the film is 1.33, and there is air on both sides of the film.

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What is the thinnest soap film (excluding the case of zero thickness) that appears black when illumi...