zone plate


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  • Zone plate — A zone plate is a device used to focus light. Unlike lenses however, zone plates use diffraction instead of refraction. Created by Augustin Jean Fresnel [freɪ nel] , they are sometimes called Fresnel zone plates in his honor. The zone plate s… …   Wikipedia

  • zone plate — zoninė plokštelė statusas T sritis fizika atitikmenys: angl. zone plate vok. Zonenplatte, f rus. зональная пластинка, f pranc. plaque zonale, f …   Fizikos terminų žodynas

  • zone plate — noun : an optical device that consists of a series of concentric opaque rings of such width that rays from alternate half period elements are cut off and that has some properties of a converging lens * * * Optics. a plate or screen with… …   Useful english dictionary

  • zone plate — Optics. a plate or screen with alternating opaque and transparent concentric rings that focus light by diffraction. [1895 1900] * * * …   Universalium

  • zone plate — noun a glass plate marked out into concentric rings that are alternately transparent and opaque, used like a lens to focus light …   English new terms dictionary

  • Fresnel zone plate — noun An optical device that uses diffraction through alternate transparent and opaque rings to function as a lens Syn: zone plate …   Wiktionary

  • plate tectonics — plate tectonic, adj. Geol. a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic asthenosphere more or less independently to collide with, slide under, or move past… …   Universalium

  • Plate-forme petroliere — Plate forme pétrolière Une plate forme pétrolière est une construction marine fixe ou flottante qui sert à l exploitation d un gisement pétrolier. Elle supporte principalement les dispositifs nécessaires pour la phase de forage d extraction du… …   Wikipédia en Français

  • Zone de couverture — de la télévision La zone de couverture d une chaîne de télévision correspond à la zone géographique de réception possible, en fonction du gain de l antenne installée. Couverture satellitaire La zone de couverture de l émission d un satellite… …   Wikipédia en Français

  • Zone de couverture de la television — Zone de couverture de la télévision La zone de couverture d une chaîne de télévision correspond à la zone géographique de réception possible, en fonction du gain de l antenne installée. Couverture satellitaire La zone de couverture de l émission… …   Wikipédia en Français

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