flint glass


flint glass
noun
optical glass of high dispersion and high refractive index
Syn: ↑optical flint
Hypernyms: ↑optical glass

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noun
1. : glass formerly made using calcined flints as a source of silica
2. : heavy brilliant glass that contains lead oxide, that has a relatively high refractive index and dispersion value, and that now is used chiefly for optical structures (as lenses or prisms) — compare crown glass
3. : a clear colorless glass

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Optics.
an optical glass of high dispersion and a relatively high index of refraction, composed of alkalis, lead oxide, and silica, with or without other bases, sometimes used as the diverging lens component of an achromatic lens.
[1665-75]

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flint glass noun
A very fine and pure lead glass, orig made of calcined flints
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Main Entry:flint

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flint glass,
a brilliant, heavy glass, containing lead, potassium or sodium, and silicon, used especially for lenses and dishes. See also crown glass. (Cf.crown glass)

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n. a pure lustrous kind of glass originally made with flint

Useful english dictionary. 2012.

Look at other dictionaries:

  • flint-glass — [ flintglas ] n. m. inv. ou flint [ flint ] n. m. • 1764, 1855; angl. flint « silex » et glass « verre » ♦ Opt. Verre à base de plomb, très dispersif, utilisé en optique. ● flint ou flint glass nom masculin ( …   Encyclopédie Universelle

  • Flint glass — is optical glass that has relatively high refractive index and low Abbe number. Flint glasses are arbitrarily defined as having an Abbe number of 50 to 55 or less. The currently known flint glasses have refractive indices ranging between 1.45 and …   Wikipedia

  • Flint Glass — is an experimental electronic project by French electronic musician Gwenn Trémorin. Flint Glass debut album was released on Brume Records, which was co founded by Trémorin and Boris Volant from the experimental collective Atelier112.Discography*… …   Wikipedia

  • Flint glass — Glass Glass (gl[.a]s), n. [OE. glas, gles, AS. gl[ae]s; akin to D., G., Dan., & Sw. glas, Icel. glas, gler, Dan. glar; cf. AS. gl[ae]r amber, L. glaesum. Cf. {Glare}, n., {Glaze}, v. t.] [1913 Webster] 1. A hard, brittle, translucent, and… …   The Collaborative International Dictionary of English

  • flint-glass — flint ou flint glass (flint ou flint glas ) s. m. Verre en cristal servant avec le crown glass à faire les lentilles achromatiques des microscopes ; il est constitué par 3 atomes de quadrisilicate de plomb et 2 atomes de quadrisilicate de potasse …   Dictionnaire de la Langue Française d'Émile Littré

  • Flint glass — (Chem.) A soft, heavy, brilliant glass, consisting essentially of a silicate of lead and potassium. It is used for tableware, and for optical instruments, as prisms, its density giving a high degree of dispersive power; so called, because… …   The Collaborative International Dictionary of English

  • Flint glass — Flint Flint, n. [AS. flint, akin to Sw. flinta, Dan. flint; cf. OHG. flins flint, G. flinte gun (cf. E. flintlock), perh. akin to Gr. ? brick. Cf. {Plinth}.] 1. (Min.) A massive, somewhat impure variety of quartz, in color usually of a gray to… …   The Collaborative International Dictionary of English

  • flint glass — flint′ glass n. opt an optical glass of high dispersion and a relatively high index of refraction, composed of alkalis, lead oxide, and silica …   From formal English to slang

  • flint glass — n. a hard, bright glass containing lead oxide and having a high index of refraction, used for lenses, crystal, etc …   English World dictionary

  • flint glass — Optics. an optical glass of high dispersion and a relatively high index of refraction, composed of alkalis, lead oxide, and silica, with or without other bases, sometimes used as the diverging lens component of an achromatic lens. [1665 75] * * * …   Universalium