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Kingston, city, Canada

(Encyclopedia)Kingston, city (1991 pop. 56,597), S Ont., Canada, on Lake Ontario, near the head of the St. Lawrence River and at the end of Rideau Canal from Ottawa. Kingston has probably the best harbor on the lak...

Brown, Harold

(Encyclopedia)Brown, Harold, 1927–2019, American nuclear physicist and government official, b. New York City, Ph.D. Columbia, 1949. He joined (1952) the staff of the Lawrence Radiation Laboratory (now Lawrence Li...

technetium

(Encyclopedia)technetium tĕknēˈshēəm [key] [Gr. technetos=artificial], artificially produced radioactive chemical element; symbol Tc; at. no. 43; mass no. of most stable isotope 98; m.p. 2,200℃; b.p. 4,877�...

Revelation

(Encyclopedia)Revelation or Apocalypse əpŏkˈəlĭps [key], the last book of the New Testament. It was written c.a.d. 95 on Patmos Island off the coast of Asia Minor by an exile named John, in the wake of local p...

North America

(Encyclopedia)CE5 North America, third largest continent (2015 est. pop. 571,949,000), c.9,400,000 sq mi (24,346,000 sq km), the northern of the two continents of the Western Hemisphere. North America includes a...

Brockville

(Encyclopedia)Brockville, city, SE Ont., Canada, on the St. Lawrence River. It is in a rich dairy region. The city's manufactures include telecommunications equipment...

Iran-contra affair

(Encyclopedia)Iran-contra affair, in U.S. history, secret arrangement in the 1980s to provide funds to the Nicaraguan contra rebels from profits gained by selling arms to Iran. The Iran-contra affair was the produc...

Comanche

(Encyclopedia)Comanche kəmănˈchē [key], Native North Americans belonging to the Shoshonean group of the Uto-Aztecan branch of the Aztec-Tanoan linguistic stock (see Native American languages). They originated f...

Garvey, Marcus

(Encyclopedia)Garvey, Marcus, 1887–1940, American proponent of black nationalism, b. Jamaica. At the age of 14, Garvey went to work as a printer's apprentice. After leading (1907) an unsuccessful printers' strike...

Montmorency, river, Canada

(Encyclopedia)Montmorency, river, c.60 mi (100 km) long, rising in the Laurentian Mts., S Que., Canada, and flowing generally S to the St. Lawrence River. Near its mouth are Montmorency Falls (275 ft/84 m high), pr...