Definition of Flint glass. Meaning of Flint glass. Synonyms of Flint glass

Here you will find one or more explanations in English for the word Flint glass. Also in the bottom left of the page several parts of wikipedia pages related to the word Flint glass and, of course, Flint glass synonyms and on the right images related to the word Flint glass.

Definition of Flint glass

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 brown or nearly black, breaking with a conchoidal fracture and sharp edge. It is very hard, and strikes fire with steel. 2. A piece of flint for striking fire; -- formerly much used, esp. in the hammers of gun locks. 3. Anything extremely hard, unimpressible, and unyielding, like flint. ``A heart of flint.' --Spenser. Flint age. (Geol.) Same as Stone age, under Stone. Flint brick, a fire made principially of powdered silex. Flint glass. See in the Vocabulary. Flint implements (Arch[ae]ol.), tools, etc., employed by men before the use of metals, such as axes, arrows, spears, knives, wedges, etc., which were commonly made of flint, but also of granite, jade, jasper, and other hard stones. Flint mill. (a) (Pottery) A mill in which flints are ground. (b) (Mining) An obsolete appliance for lighting the miner at his work, in which flints on a revolving wheel were made to produce a shower of sparks, which gave light, but did not inflame the fire damp. --Knight. Flint stone, a hard, siliceous stone; a flint. Flint wall, a kind of wall, common in England, on the face of which are exposed the black surfaces of broken flints set in the mortar, with quions of masonry. Liquor of flints, a solution of silica, or flints, in potash. To skin a flint, to be capable of, or guilty of, any expedient or any meanness for making money. [Colloq.]
Flint glass
Flint glass 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 formerly the silica was obtained from pulverized flints. Called also crystal glass. Cf. Glass. Note: The concave or diverging half on an achromatic lens is usually made of flint glass.

Meaning of Flint glass from wikipedia

- Flint gl**** is optical gl**** that has relatively high refractive index and low Abbe number (high dispersion). Flint gl****es are arbitrarily defined as...
- moved to Williamsburg, Brooklyn, New York, and operated as the Brooklyn Flint Gl**** Works. The company moved again to its ultimate home and eponym, the city...
- Flint gl**** is a form of gl**** characterised by having a high refractive index and a low Abbe number. Flint Gl**** may also refer to: Flint Gl****, an electronic...
- and a round exit pupil. A concave lens of flint gl**** is commonly combined with a convex lens of crown gl**** to produce an achromatic doublet. The dispersions...
- Flint is a sedimentary cryptocrystalline form of the mineral quartz, categorized as the variety of chert that occurs in chalk or marly limestone. Flint...
- Uranium gl**** is gl**** which has had uranium, usually in oxide diuranate form, added to a gl**** mix before melting for colouration. The proportion usually...
- crystal, historically also known as flint gl**** due to the original silica source, contains a minimum of 24% PbO. Lead gl**** is often desirable for a variety...
- made out of flint gl**** such as F2, which has relatively high dispersion, and the other is a positive (convex) element made of crown gl**** such as BK7...
- American Flint. Toledo, OH: American Flint Gl**** Workers Union. January 1916. "Dunkirk (page 28)". American Flint. Toledo, OH: American Flint Gl**** Workers...
- toughened gl**** is a type of safety gl**** processed by controlled thermal or chemical treatments to increase its strength compared with normal gl****. Tempering...