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IEVref:731-03-11ID:
Language:enStatus: Standard
Term: refractive index (of a medium)
Synonym1: index of refraction
[Preferred]
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Symbol: n
Definition: at a point in a medium and in a given direction, the ratio of the speed of light in vacuum to the phase velocity of a sinusoidal plane wave propagating in that given direction


Publication date:1991-10
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Internal notes:2016-03-07: Editorial changes: "velocity of light in vacuum" replaced by "speed of light in vacuum". See correspondence "Questions re part 731" 2015-02 and 2015-03. JGO
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