Columbia Encyclopedia

Search results

500 results found

amalgamation process

(Encyclopedia)amalgamation process əmălˌgəmāˈshən [key], in particular, a method to extract gold and silver from ores. The ore is crushed and treated with mercury, in which the metal dissolves. The amalgam i...

Ambridge

(Encyclopedia)Ambridge, industrial borough (2020 pop. 6,513), Beaver co., W Pa., on the Ohio River; inc. 1905. Founded by and named for the American Bridge Co. in 1901, it now manufactures plastics, pro...

Port Saint Lucie

(Encyclopedia)Port Saint Lucie lo͞oˈsē [key], city (1990 pop. 55,866), St. Lucie co., central E Fla., on the St. Lucie River; inc. 1961. Fabricated metal products, trailers, printing materials, and processed sto...

Petrucci, Ottaviano dei

(Encyclopedia)Petrucci, Ottaviano dei ōtˌtävyäˈnō dāˈē pātro͞otˈchē [key], 1466–1539, Venetian printer. Petrucci was the inventor of printing music by movable metal type. His patent for the process w...

Rutherglen

(Encyclopedia)Rutherglen rŭᵺˈərglĕn [key], town (1991 pop. 24,900), South Lanarkshire, S central Scotland, on the Clyde River. Manufactures include chemicals, paper, textiles, and metal products. Rutherglen b...

Roscoe, Sir Henry Enfield

(Encyclopedia)Roscoe, Sir Henry Enfield rŏsˈkō [key], 1833–1915, English chemist. He was professor (1857–87) at Owens College, Manchester. He is known for his work, with R. W. Bunsen, in photochemistry and f...

Reşiţa

(Encyclopedia)Reşiţa rĕˈshētsä [key], Hung. Resiczabánya, city (1990 pop. 110,519), W Romania, in the Banat, in the western foothills of the Transylvanian Alps. It is a railroad terminus and a leading Romani...

prosthetic group

(Encyclopedia)prosthetic group, non-amino acid portions of certain protein molecules. The key part of the prosthetic group may be either organic (such as a vitamin) or inorganic (such as a metal) and is usually req...

Oersted, Hans Christian

(Encyclopedia)Oersted or Ørsted, Hans Christian häns krĭsˈtyän örˈstĭᵺ [key], 1777–1851, Danish physicist and chemist. He was professor at Copenhagen from 1806. His discovery (1819) that a magnetic need...

Votkinsk

(Encyclopedia)Votkinsk vôtˈkĭnsk [key], city (1989 pop. 103,500), Udmurt Republic, E European Russia, on a tributary of the Kama River. It has machine plants and sawmills. Founded in 1759 as Votkinski Zavod, a m...