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Stern, Otto

(Encyclopedia)Stern, Otto stûrn, Ger. ôˈtō shtĕrn [key], 1888–1969, American physicist, b. Germany, Ph.D. Univ. of Breslau, 1912. After resigning from his post at the Univ. of Hamburg in 1933, he became prof...

Irwin, Robert

(Encyclopedia)Irwin, Robert, 1928–, American painter and sculptor, b. Long Beach, Calif. Irwin was one of the founders of the California-based Light and Space movement. Early in his career, he painted in the abst...

Greenbelt

(Encyclopedia)Greenbelt, city (2020 pop. 24,921), Prince Georges co., W central Md., a residential suburb of Washington, D.C.; chartered 1937. Greenbelt was planned a...

cofferdam

(Encyclopedia)cofferdam, temporary barrier for excluding water from an area that is normally submerged. Made commonly of wood, steel, or concrete sheet piling (see pile), cofferdams are used in constructing the fou...

elevation

(Encyclopedia)elevation, vertical distance from a datum plane, usually mean sea level to a point above the earth. Often used synonymously with altitude, elevation is the height on the earth's surface and altitude, ...

sinus

(Encyclopedia)CE5 Sinuses of the face sinus, cavity or hollow space in the body, usually filled with air or blood. In humans the paranasal sinuses, mucus-lined cavities in the bones of the face, are connected b...

White, Robert Michael

(Encyclopedia)White, Robert Michael, 1924–2010, American aviator, b. New York City. A fighter pilot during World War II, he was shot down over Germany and held in a prisoner-of-war camp (Feb.–Apr, 1945); he was...

Lee, William Henry Fitzhugh

(Encyclopedia)Lee, William Henry Fitzhugh, known as Rooney Lee, 1837–91, Confederate cavalry general in the American Civil War, b. Arlington House, near Alexandria, Va.; son of Robert E. Lee. He entered Harvard i...

Kutaisi

(Encyclopedia)Kutaisi ko͞otəēˈsē [key], city (1989 pop. 234,870), W Georgia, on the Rion River. Georgia's second largest city and the country's former legislative capital (2012–18), it has industries produci...

Han, rivers, China

(Encyclopedia)Han. 1 River of S China, 210 mi (338 km) long, rising in W Fujian prov. and flowing S through Guangdong prov. to the South China Sea at Shantou; navigable for about 100 mi (160 km) upstream. The dense...