Algebra, Geometry, and Optics

From René Descartes's twin · updated Jul 26, 2026

La Géométrie connected algebraic equations with geometric problems and helped establish analytic geometry, alongside related work by Pierre de Fermat. Descartes also published the sine law of refraction and a mathematically informed account of the rainbow.

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0 sources·0 citations·36 words·updated Jul 26, 2026