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bimetallism
(Encyclopedia) bimetallismbimetallismbīmĕtˈəlĭzˌəm [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…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…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,…beryllium
(Encyclopedia) berylliumberylliumbərĭlˈēəm [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℃;…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)…ligand
(Encyclopedia) ligandligandlĭgˈənd [key], charged or uncharged molecule with one or more unshared pairs of electrons that can attach to a central metallic atom or ion to form an aggregate known as a…iridium
(Encyclopedia) iridiumiridiumĭrĭdˈēəm [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…holmium
(Encyclopedia) holmiumholmiumhōlˈmēəm [key] [Lat.,=Stockholm], metallic chemical element; symbol Ho; at. no. 67; at. wt. 164.93032; m.p. about 1,474℃; b.p. about 2,425℃; sp. gr. 8.78 at 25℃; valence…thermite
(Encyclopedia) thermite [from Thermit, a trade name], mixture of powdered or granular aluminum metal and powdered iron oxide. When ignited it gives off large amounts of heat. In wartime it has been…Cudahy
(Encyclopedia) Cudahy Cudahy kŭdˈəhēˌ [key]. 1 City (2020 pop. 23,197), Los Angeles co., S Calif…Trending
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