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Snell's Law - Refraction Calculator
refractive index (ni) =
refractive index (nr) =
The angle of refraction of light ray passing through an interface between two media is a function of the angle of incidence and the refractive indexes of the media.
θr = the angle of refraction
θi = the angle of incidence
ni = the refraction idex of medium containing the incident ray
nr = the refraction idex of medium containing the transmitted ray
There is no critical angle when the refractive index of the medium containing the incident ray is less than the medium with the transmitted ray.
Try the Snell's Law - refraction practice problems to test your understanding of the calculationsRelated Content