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Cernuschi, Henri

(Encyclopedia)Cernuschi, Henri chārno͞oˈskē [key], 1821–96, Italian politician and economist. A strong republican, he was a leader in the Milan revolt of 1848 in support of Giuseppe Garibaldi. In 1850 he went...

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...

indium

(Encyclopedia)indium ĭnˈdēəm [key], a metallic chemical element; symbol In; at. no. 49; at. wt. 114.818; m.p. 156.6℃; b.p. about 2,080℃; sp. gr. 7.31 at 20℃; valence +1, +2, or +3. Indium is a soft, malle...

Argun

(Encyclopedia)Argun ärˈgo͞onˈ [key], Mandarin Ergun, river, 950 mi (1,529 km) long, rising in the Da Hinggan Mts., Heilongjiang prov., NE China, as the Hailar River and flowing W to the Russian border, then NE ...

flotation process

(Encyclopedia)flotation process, in mineral treatment and mining, process for concentrating the metal-bearing mineral in an ore. Crude ore is ground to a fine powder and mixed with water, frothing reagents, and col...

Jáchymov

(Encyclopedia)Jáchymov yäˈkhĭmôf [key], Ger. Joachimsthal, town, NW Czech Republic, in Bohemia, in the Erzgebirge [ore mountains]. The productivity of its uranium mines, once extensive, has declined since Worl...

Pearson, David

(Encyclopedia)Pearson, David, 1934–, American auto racing driver, b. Spartanburg, S.C. In a 27-year National Association for Stock Car Auto Racing career (1960–86), the “Silver Fox” won a total of 105 Cup S...

Ocala

(Encyclopedia)Ocala ōkălˈə [key], city (1990 pop. 42,045), seat of Marion co., N central Fla.; inc. 1868. It is a trade and processing center for citrus fruit, vegetables, and truck farm goods. The surrounding ...

Owyhee

(Encyclopedia)Owyhee ōˈwīhē [key], river, c.300 mi (480 km) long, rising in several branches in SW Idaho, N Nev., and SE Oreg. and flowing N across NE Oreg. to the Snake River; named in 1826 for two Hawaiian em...

sodium thiosulfate

(Encyclopedia)sodium thiosulfate, Na2S2O3, colorless crystalline compound that is more familiar as the pentahydrate, Na2S2O3·5H2O, an efflorescent, monoclinic crystalline substance also called sodium hyposulfite o...