index of refraction
Date: 1829 refractive index

New Collegiate Dictionary. 2001.

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  • Index of refraction — Refraction Re*frac tion (r?*fr?k sh?n), n. [F. r[ e]fraction.] 1. The act of refracting, or the state of being refracted. [1913 Webster] 2. The change in the direction of ray of light, heat, or the like, when it enters obliquely a medium of a… …   The Collaborative International Dictionary of English

  • Index of refraction — 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

  • index of refraction — n. the ratio of the sine of the angle of incidence to the sine of the angle of refraction for a ray of light crossing from one medium into another …   English World 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

  • index of refraction — Optics. a number indicating the speed of light in a given medium as either the ratio of the speed of light in a vacuum to that in the given medium (absolute index of refraction) or the ratio of the speed of light in a specified medium to that in… …   Universalium

  • index of refraction — 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

  • index of refraction — 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

  • Index Of Refraction —    This is the measure of the refracting power of a transparent substance. It is the ratio of the speed of light in a vacuum compared to the speed of light as it passes through the transparent substance. See Invisible and Refraction …   The writer's dictionary of science fiction, fantasy, horror and mythology

  • index of refraction — noun → refractive index …   Australian English dictionary

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