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embossing

(Encyclopedia)embossing, process of producing upon various materials designs or patterns in relief by mechanical means. The material is pressed between a pair of dies especially adapted to its hardness and the dept...

Ponca City

(Encyclopedia)Ponca City, city (1990 pop. 26,359), Kay co., N Okla., on the Arkansas River; founded 1893 with the opening of the Cherokee Strip, inc. 1899. It is a trade, processing, and shipping hub in a grain, li...

Rybnik

(Encyclopedia)Rybnik rĭbˈnēk [key], town (1993 est. pop. 145,400), Śląskie prov., S Poland. It is a railway junction and industrial center with industries manufacturing mining machinery, metal products, and ch...

Rancho Cucamonga

(Encyclopedia)Rancho Cucamonga rănˈchō ko͞oˌkəmängˈgə [key], city (1990 pop. 101,409), San Bernardino co., S Calif. Situated in a vast suburban corridor, it is part of San Bernardino's metropolitan area. A...

bimetallism

(Encyclopedia)bimetallism bīmĕtˈəlĭzˌəm [key], in economic history, monetary system in which two commodities, usually gold and silver, were used as a standard and coined without limit at a ratio fixed by leg...

enamelware

(Encyclopedia)enamelware, utensils having a metal foundation and a coating of special glass, called porcelain enamel, applied by fusion. The porcelain enamel, or vitreous enamel, is applied to make the utensils cor...

Union City

(Encyclopedia)Union City. 1 Residential city (1990 pop. 53,762), Alameda co., W Calif., in an agricultural region; inc. 1959 with the merger of Decoto and Alvarado districts. Metal, plastic, paper, and food product...

beryllium

(Encyclopedia)beryllium bərĭlˈēəm [key] [from beryl ], metallic chemical element; symbol Be; at. no. 4; at. wt. 9.01218; m.p. about 1,278℃; b.p. 2,970℃ (estimated); sp. gr. 1.85 at 20℃; valence +2. Ber...

brazing

(Encyclopedia)brazing, method of joining metal parts using nonferrous filler metals with high melting points such as copper, silver, and aluminum alloys. Brazing differs from soldering (see solder) by using a highe...

iridium

(Encyclopedia)iridium ĭrĭdˈēəm [key], metallic chemical element; symbol Ir; at. no. 77; at. wt. 192.217; m.p. about 2,410℃; b.p. about 4,130℃; sp. gr. 22.55 at 20℃; valence +3 or +4. Iridium is a very ha...

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