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total internal reflection





total internal reflection
The reflection that occurs when light strikes an interface at an angle of incidence (with respect to the normal) greater than the critical angle. Total internal reflection occurs when, according to Snell's Law, the internal angle of incidence does not have a corresponding, real-valued, external angle of incidence. At angles less than the critical angle, both reflection and refraction occur.


Related category

   • OPTICS AND OPTICAL PHENOMENA