cie

17-24-109

refractive index

n

quotient of the speed of light in vacuum and the speed of light in a medium

Note 1 to entry: The value of the refractive index can depend on the frequency, polarization, and direction.

Note 2 to entry: The refractive index is expressed by n = c0/c, where c0 is the speed of light in vacuum and c is the speed of light in the medium.

Note 3 to entry: See also "complex refractive index".

Note 4 to entry: The refractivity is expressed by n−1, where n is refractive index.

Note 5 to entry: The refractive index has unit one.

Note 6 to entry: This entry was numbered 845-04-101 in IEC 60050-845:1987.

Note 7 to entry: This entry was numbered 17-1074 in CIE S 017:2011.

Publication date: 2020-12
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