refractive index of a medium


refractive index of a medium
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English-Russian dictionary of terminology cable technology.

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  • Refractive index — Refraction of light at the interface between two media. In optics the refractive index or index of refraction of a substance or medium is a measure of the speed of light in that medium. It is expressed as a ratio of the speed of light in vacuum… …   Wikipedia

  • refractive index — n INDEX OF REFRACTION * * * the refractive power of a medium compared with that of air, which is assumed to be 1. Symbol n, n, or nD …   Medical dictionary

  • refractive index — Optics. See index of refraction. [1830 40] * * * ▪ physics also called  Index Of Refraction,         measure of the bending of a ray of light when passing from one medium into another. If i is the angle of incidence of a ray in vacuum (angle… …   Universalium

  • refractive index — noun the ratio of the velocity of light in a vacuum to that in a medium • Syn: ↑index of refraction • Hypernyms: ↑ratio * * * reˌfractive ˈindex 7 [refractive index] noun …   Useful english dictionary

  • refractive index — (N)    The change in direction (apparent bending) of a light ray passing from one medium to another of different density, as from air to water or glass. The ratio of the sine of the angle of incidence to the sine of the angle of refraction is the …   Forensic science glossary

  • refractive index — noun Date: 1839 the ratio of the speed of radiation (as light) in one medium (as air, glass, or a vacuum) to that in another medium …   New Collegiate Dictionary

  • refractive index — noun the ratio of the speed of light in air or vacuum to that in another medium …   Wiktionary

  • refractive index — number that expresses the speed of light through a medium as a ratio between that speed and the speed of light in a vacuum …   English contemporary dictionary

  • refractive index — noun the ratio of the velocity of light in a vacuum to its velocity in a specified medium …   English new terms dictionary

  • index of refraction — n the ratio of the speed of radiation (as light) in one medium (as a vacuum) to that in another medium called also refractive index …   Medical dictionary

  • index of refraction — noun the ratio of the velocity of light in a vacuum to that in a medium • Syn: ↑refractive index • Hypernyms: ↑ratio * * * : the ratio of the velocity of light or other radiation in the first of two media to its velocity in the second as it… …   Useful english dictionary


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