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Freedmen's Bureau

(Encyclopedia)Freedmen's Bureau, in U.S. history, a federal agency, formed to aid and protect the newly freed blacks in the South after the Civil War. Established by an act of Mar. 3, 1865, under the name “bureau...

Xenakis, Yannis

(Encyclopedia)Xenakis, Yannis or Iannis yänˈĭs zānäˈkĭs [key], 1922–2001, Greek-French composer, b. Brăila, Romania. Xenakis studied civil engineering in Athens (1940–47) and was active in the anti-Nazi...

Chernobyl

(Encyclopedia)Chernobyl chĭrnōˈbyēl [key], Ukr. Chornobyl, abandoned city, N Ukraine, near the Belarus border, on the Pripyat River. Ten miles (16 km) to the north, in the town of Pripyat, is the Chernobyl nucl...

Stockhausen, Karlheinz

(Encyclopedia)Stockhausen, Karlheinz kärlˈhīnts shtôkˈhouzən [key], 1928–2007, German composer, music theorist, and teacher; his first name also appears as Karl Heinz. He studied composition with Frank Mart...

bearing

(Encyclopedia)bearing, machine part designed to reduce friction between moving parts or to support moving loads. There are two main kinds of bearings: the antifriction type, such as the roller bearing and the ball ...

Burlington, cities, United States

(Encyclopedia)Burlington. 1 City (2020 pop. 23,982), seat of Des Moines co., SE Iowa, on four hills overlooking the Mississippi (spanned there by rail and highway ...

Wilkes, Charles

(Encyclopedia)Wilkes, Charles, 1798–1877, American naval officer and explorer, b. New York City, educated by his father. In 1815 he entered the merchant service and received (1818) an appointment as a midshipman....

glass

(Encyclopedia)glass, hard substance, usually brittle and transparent, composed chiefly of silicates and an alkali fused at high temperature. Glass has become invaluable in modern architecture, illumination, elect...

Lübeck

(Encyclopedia)Lübeck lüˈbĕk [key], city (1994 pop. 217,270), Schleswig-Holstein, central Germany, on the Trave River near its mouth on the Baltic Sea. It is a major port and a commercial and industrial center; ...

Deep Sea Drilling Project

(Encyclopedia)Deep Sea Drilling Project, U.S. program designed to investigate the evolution of ocean basins by core drilling of ocean sediments and underlying oceanic crust. Funded by the National Science Foundatio...