melting of the first glass

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• Glass-to-metal seal — Glass to metal seals are a very important element of the construction of vacuum tubes, electric discharge tubes, incandescent light bulbs, glass encapsulated semiconductor diodes, reed switches, pressure tight glass windows in metal cases, and… …   Wikipedia

• Glass transition — The liquid glass transition (or glass transition for short) is the reversible transition in amorphous materials (or in amorphous regions within semicrystalline materials) from a hard and relatively brittle state into a molten or rubber like state …   Wikipedia

• Glass transition temperature — The glass transition temperature, T g, is the temperature at which an amorphous solid, such as glass or a polymer, becomes brittle on cooling, or soft on heating. More specifically, it defines a pseudo second order phase transition in which a… …   Wikipedia

• Glass batch calculation — or glass batching is used to determine the correct mix of raw materials (batch) for a glass melt.PrincipleThe raw materials mixture for glass melting is termed batch . The batch calculation is based on the common linear regression equation:NB =… …   Wikipedia

• Glass production — Glass is common in everyday life, from glass windows to glass containers. The manufacture of glass for everyday purposes may involve complexity and automation. This article deals with the mass production of glass. Glass container productionGlass… …   Wikipedia

• The Wizard of Oz (1939 film) — The Wizard of Oz Theatrical release poster Directed by Victor Fleming Uncredited: Norman Taurog Richard Thorpe …   Wikipedia

• The United States of America —     The United States of America     † Catholic Encyclopedia ► The United States of America     BOUNDARIES AND AREA     On the east the boundary is formed by the St. Croix River and an arbitrary line to the St. John, and on the north by the… …   Catholic encyclopedia

• The Saint of Dragons — is a fantasy novel by Jason Hightman. It is his first book and the first of a series, the second of which is called Samurai. PremiseThe premise of the novel is that Dragons (also known as Serpents, Serpentines, Pyrothraxes or Draconians) are in… …   Wikipedia

• Glass — This article is about the material. For other uses, see Glass (disambiguation). Moldavite, a natural glass formed by meteorite impact, from Besednice, Bohemia …   Wikipedia

• glass — glassless, adj. glasslike, adj. /glas, glahs/, n. 1. a hard, brittle, noncrystalline, more or less transparent substance produced by fusion, usually consisting of mutually dissolved silica and silicates that also contain soda and lime, as in the… …   Universalium

• Glass — /glas, glahs/, n. 1. Carter, 1858 1946, U.S. statesman. 2. Philip, born 1937, U.S. composer. * * * I Solid material, typically a mix of inorganic compounds, usually transparent or translucent, hard, brittle, and impervious to the natural elements …   Universalium