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Just set up a quick capx to show how light refracts when it passes through different media. It is possible to quantify by using Snell's law. Snell's law (also known as the Snell–Descartes law and the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air.
Hope this is of some use, maybe in laser effects or something else, comment if you can find any uses for it.