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pure quartz

См. также в других словарях:

  • quartz glass — n vitreous silica prepared from pure quartz and noted for its transparency to ultraviolet radiation * * * pure fused silica, used for prisms, lenses, and chemical vessels because its index of thermal expansion is so small that it does not crack… …   Medical dictionary

  • quartz´like´ — quartz «kwawrts», noun. a very hard mineral composed of silica, found in many different types of rocks, such as sandstone and quartzite, and as an important constituent in granite, gneiss, and other rocks. Crystals of pure quartz are colorless… …   Useful english dictionary

  • Quartz — This article is about the mineral. For other uses, see Quartz (disambiguation). Quartz Quartz crystal cluster from Tibet General Category …   Wikipedia

  • quartz glass — noun Date: 1903 vitreous silica prepared from pure quartz and noted for its transparency to ultraviolet radiation …   New Collegiate Dictionary

  • quartz — [ kwarts ] n. m. • 1749; all. Quarz ♦ Forme cristalline commune de la silice (SiO2), appelée à l état pur cristal de roche; élément constitutif fréquent des roches cristallines (granites, rhyolithes, etc.), de certaines roches sédimentaires… …   Encyclopédie Universelle

  • Quartz (electronique) — Quartz (électronique) Pour les articles homonymes, voir Quartz. Un quartz de 4 MHz dans un boîtier hermétique HC 49/US …   Wikipédia en Français

  • quartz glass — noun colorless glass made of almost pure silica • Syn: ↑quartz, ↑vitreous silica, ↑lechatelierite, ↑crystal • Derivationally related forms: ↑crystallize (for: ↑crystal), ↑ …   Useful english dictionary

  • Quartz (électronique) — Pour les articles homonymes, voir Quartz. Un quartz de 4 MHz dans un boîtier hermétique HC 49/US …   Wikipédia en Français

  • quartz — (kouarts ) s. m. Terme de minéralogie. Nom de l acide silicique, ou silice, ou matière des cailloux plus ou moins pure et cristallisée. •   Le quartz, qui forme la roche intérieure du globe, BUFF. Min. t. I, p. 127. •   On scie, on taille, on… …   Dictionnaire de la Langue Française d'Émile Littré

  • quartz glass — colorless glass made from quartz, colorless glass made from almost pure silicon dioxide …   English contemporary dictionary

  • quartzglass — quartz glass n. A clear vitreous solid, formed by melting pure quartz, that can withstand high temperatures and is extremely transparent to infrared, visible, and ultraviolet radiations. Also called fused quartz, fused silica. * * * …   Universalium

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