Columbia Encyclopedia

Search results

500 results found

cobaltite

(Encyclopedia)cobaltite kōˈbôltīt, kōbôlˈtīt [key], opaque, silver-white, sometimes reddish or grayish mineral of the pyrite group, a compound of cobalt, arsenic, and sulfur, CoAsS. It occurs in crystals of...

Kensico Reservoir

(Encyclopedia)Kensico Reservoir kĕnˈzĭkō [key], c.4 sq mi (10 sq km), SE N.Y., N of White Plains, formed by Kensico Dam (completed 1915) on the Bronx River. A principal unit in the New York City water supply sy...

Kuznetsk Alatau

(Encyclopedia)Kuznetsk Alatau ko͞oznyĕtskˈ əläˈtou [key], mountain range, S Siberian Russia, E of Novokuznetsk, rising to about 6,900 ft (2,100 m). Part of the great mountain system of central Asia, the range...

Aguascalientes, city, Mexico

(Encyclopedia)Aguascalientes, city, capital of Aguascalientes state, central Mexico. The city is a pleasant health resort, noted for its mineral waters and vineyards. Its industries include railroad rep...

Sun, river, United States

(Encyclopedia)Sun, river, c.130 mi (210 km) long, rising in the Rocky Mts., NW Mont., and flowing generally E to the Missouri River at Great Falls. The Sun River project of the U.S. Bureau of Reclamation utilizes t...

Binns, John Alexander

(Encyclopedia)Binns, John Alexander, c.1761–1813, American agriculturist, b. Loudoun co., Va. He was one of the first to experiment with gypsum as a fertilizer and to convince others of its efficacy. Partly throu...

zadruga

(Encyclopedia)zadruga, village community of the South Slavs. The zadruga, a large family or clan organized on a patrilineal basis, lived together in one dwelling and held all land, livestock, and money in common. T...

Sipilä, Juha Petri

(Encyclopedia)Sipilä, Juha Petri, 1961–, Finnish political leader, prime minister of Finland (2015–19). A business executive and one of Finland's wealthiest persons, he was first elected to the Finnish parliam...

Euclid, Greek mathematician

(Encyclopedia)Euclid yo͞oˈklĭd [key], fl. 300 b.c., Greek mathematician. Little is known of his life other than the fact that he taught at Alexandria, being associated with the school that grew up there in the l...

lighthouse

(Encyclopedia)lighthouse, towerlike structure erected to give guidance and warning to ships and aircraft by either visible or radioelectrical means. Lighthouses were long built to conform in structure to their geog...