Columbia Encyclopedia

(Encyclopedia) Manhattan Project, the wartime effort to design and build the first nuclear weapons (atomic bombs). With the discovery of fission in 1939, it became clear to scientists that certain radioactive materi...

(Encyclopedia) Ottawa. 1 City (1990 pop. 17,451), seat of La Salle co., N central Ill., at the confluence of the Fox and Illinois rivers, in a fertile farm area; inc. as a city 1853. The city has diversified agricul...

(Encyclopedia) Cavalieri, Lina lēˈnä kävälyĕˈrē [key], 1874–1944, Italian operatic soprano. After her debut in Lisbon in 1900 she achieved great success throughout Europe and in the United States in the ly...

(Encyclopedia)  CE5 CE5 CE5 United States, officially United States of America, republic (2015 est. pop. 319,929,000), 3,539,227 sq mi (9,166,598 sq km), North America. The United States is the world's third l...

(Encyclopedia) Roanoke, river, c.410 mi (660 km) long, rising in SW Va. and flowing generally southeast across the Blue Ridge Mts. and into Albemarle Sound, NE N.C. The lower river is navigable for small craft. A co...

(Encyclopedia) Linden, city (1990 pop. 36,701), Union co., NE N.J., in the New York metropolitan area; inc. 1925. During the first half of the 20th cent., Linden changed from an agricultural district to a city of di...

(Encyclopedia) Rye, city (1990 pop. 14,936), Westchester co., SE N.Y., a suburb of New York City, on Long Island Sound; settled 1660, inc. as a city 1942. It is chiefly residential, with a cancer-research center, a ...

(Encyclopedia) Gloucester, city (2020 pop. 29,729), Essex co., NE Mass., on Cape Ann; settled 1623, inc. as a city 1873. It is a port of entry at the head of Glouceste...

(Encyclopedia) Sharon shârˈən [key], city (1990 pop. 17,493), Mercer co., NW Pa., on the Shenango River, near the Ohio line; settled c.1800, inc. as a city 1920. An industrial city, its chief manufactures are tex...

(Encyclopedia) Stamford, city (1990 pop. 108,056), Fairfield co., SW Conn., on Long Island Sound; settled 1641, inc. 1893 as a city within the town of Stamford (the two were consolidated in 1949). A variety of light...