Snell's law
This law relates the angle of incidence (q1) of light traveling in a medium of given refractive index (n1) to its angle of refraction (q2) as it enters a medium of different refractive index (n2) as: n1sin(q1) = n2sin(q2)
Synonyms: law of refraction, Snell–Descartes law, ibn-Sahl law
See also: refraction, refractive index, ordinary ray
