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I understand that Snell's law describe the relationship between the angles of incidence and refraction, when referring to light passing different isotropic media.

someone told me that Snell's law describe also the curvature of space time in General Relativity? is that true? if not what are the laws or equations used to describe curvature of space-time?

thank you in advance

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# Snell's law and General Relativity

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