index of refraction definition

  • noun:
    • The ratio associated with rate of light in vacuum pressure towards speed of light in a medium in mind. Also known as refractive index.
    • the number which conveys the proportion associated with sine of this perspective of incidence on sine of position of refraction. Hence the list of refraction for sulphur is 2, because, whenever light passes out of atmosphere into sulphur, the sine associated with direction of incidence is double the sine for the angle of refraction.
    • See under Index.
    • the proportion of this velocity of light in a vacuum compared to that in a medium

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