flame-fusion method

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• Overflow downdraw method — The overflow downdraw method or fusion method is a technique for producing flat glass. The key advantage of this technique as compared to the float glass process is the pristine surfaces, not touched by molten tin. The technique is used for the… …   Wikipedia

• Samarium — promethium ← samarium → europium ↑ Sm ↓ …   Wikipedia

• Verneuil process — The Verneuil process, also called flame fusion, was the first commercially successful method of manufacturing synthetic gemstones, developed in 1902 by the French chemist Auguste Verneuil. It is primarily used to produce the ruby and sapphire… …   Wikipedia

• Verneuil process — /verr noy /; Fr. /verdd nue yeu/ a process for making synthetic rubies, sapphires, spinels, etc., by the fusion at high temperatures of powdered compounds. Also called flame fusion process. [named after A.V.L. Verneuil, 19th century French… …   Universalium

• Diamond simulant — Due to its low cost and close visual likeness to diamond, cubic zirconia has remained the most gemologically and economically important diamond simulant since 1976. The high price of gem grade diamonds, as well as significant ethical concerns of… …   Wikipedia

• verneuil process — noun or verneuil method (ˈ)ver|nər , nə̄ē, F vernœœy Etymology: after A. V. L. Verneuil, 19th century French mineralogist : a procedure for growing large crystals (as of sapphire, ruby, spinel, or rutile) by adding the powdered material to the… …   Useful english dictionary

• Strontium titanate — Systematic name Strontium(2+) oxotitaniumbis(olate)[ …   Wikipedia

• ruby — rubylike, adj. /rooh bee/, n., pl. rubies, adj. n. 1. a red variety of corundum, used as a gem. 2. something made of this stone or one of its imitations, as a bearing in a watch. 3. a deep red port wine. 4. deep red; carmine. 5. Brit. Print. a… …   Universalium

• Ruby — /rooh bee/, n. a female given name. * * * Gemstone composed of transparent red corundum. Its colour varies from deep to pale red, in some cases with a tinge of purple, depending on chromium and iron content; the most valued is a pigeon blood red …   Universalium

• literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… …   Universalium

• Carbon nanotube — Not to be confused with Carbon fiber. Part of a series of articles on Nanomaterials Fullerenes …   Wikipedia