Refractive index
Refractive Re*fract"ive (r?*fr?kt"?v), a. [Cf. F. r['e]fractif. See {Refract}.] Serving or having power to refract, or turn from a direct course; pertaining to refraction; as, refractive surfaces; refractive powers. [1913 Webster]

{Refractive index}. (Opt.) See {Index of refraction}, under {Index}.

{Absolute refractive index} (Opt.), the index of refraction of a substances when the ray passes into it from a vacuum.

{Relative refractive index} (of two media) (Opt.), the ratio of the sine of the angle of incidence to the sine of the angle of refraction for a ray passing out of one of the media into the other. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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• Refractive index — Index In dex, n.; pl. E. {Indexes}, L. {Indices}(?). [L.: cf. F. index. See {Indicate}, {Diction}.] [1913 Webster] 1. That which points out; that which shows, indicates, manifests, or discloses; as, the increasing unemployment rate is an index of …   The Collaborative International Dictionary of English

• 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 — n. INDEX OF REFRACTION …   English World dictionary

• 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 — 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 — lūžio rodiklis statusas T sritis automatika atitikmenys: angl. index of refraction; refraction index; refractive index vok. Brechungsindex, m; Brechungsverhältnis, n; Brechungszahl, f; Brechzahl, f; Refraktionsindex, m rus. индекс преломления, m; …   Automatikos terminų žodynas

• refractive index — lūžio rodiklis statusas T sritis chemija apibrėžtis Medžiagos konstanta, apibūdinanti jos savybę laužti šviesos bangas. atitikmenys: angl. index of refraction; refraction index; refractive index rus. индекс преломления; коэффициент рефракции;… …   Chemijos terminų aiškinamasis žodynas

• 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 — lūžio rodiklis statusas T sritis Standartizacija ir metrologija apibrėžtis Esant nesugeriančiai terpei, tai elektromagnetinės spinduliuotės sklidimo greičio vakuume ir tam tikro dažnio elektromagnetinės spinduliuotės fazinio greičio terpėje… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

• refractive index — lūžio rodiklis statusas T sritis Standartizacija ir metrologija apibrėžtis Medžiagos parametras, apibūdinantis jos savybę laužti šviesos bangas. atitikmenys: angl. refraction index; refractive index vok. Brechungsindex, m rus. показатель… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas