refractive index

re·frac·tive in·dex

R r

Definitions of refractive index words

noun refractive index index of refraction. 1
noun refractive index a measure of the extent to which radiation is refracted on passing through the interface between two media. It is the ratio of the sine of the angle of incidence to the sine of the angle of refraction, which can be shown to be equal to the ratio of the phase speed in the first medium to that in the second. In the case of electromagnetic radiation, esp light, it is usual to give values of the absolute refractive index of a medium, that is for radiation entering the medium from free space 0
noun refractive index index of refraction 0

before 1830

One of the 36% newest English words

First recorded in 1830-40

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This term is known only to a narrow circle of people with rare knowledge. Only 1% of English native speakers know the meaning of this word.

According to our data most of word are more popular. This word is almost not used. It has a much more popular synonym.

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