snell's law in English

noun
1
a law stating that the ratio of the sines of the angles of incidence and refraction of a wave are constant when it passes between two given media.
Fermat proposed that light follows the path which takes the shortest time, enabling Snell's law of refraction to be deduced mathematically.

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1. Refraction — Snell's Law.

2. Willebrord Snellius at the Mathematics Genealogy Project Snell's Law Song

3. About 800 years later, in AD 984, Ibn Sahl discovered a law of refraction mathematically equivalent to Snell's law.

4. Since the angle of refraction is β, Snell's law gives us sin(2β − φ) = n sin β, where n = 1.333 is the refractive index of water.

5. At the surfaces of the prism, Snell's law predicts that light incident at an angle θ to the normal will be refracted at an angle arcsin(sin (θ) / n).