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Perry, Matthew Calbraith

(Encyclopedia)Perry, Matthew Calbraith, 1794–1858, American naval officer, b. South Kingstown, R.I.; brother of Oliver Hazard Perry. Appointed a midshipman in 1809, he first served under his brother on the Reveng...

Perry, Oliver Hazard

(Encyclopedia)Perry, Oliver Hazard, 1785–1819, American naval officer, b. South Kingstown, R.I.; brother of Matthew Calbraith Perry. Appointed a midshipman in 1799, he served in the Tripolitan War, was promoted t...

Perry, Ralph Barton

(Encyclopedia)Perry, Ralph Barton, 1876–1957, American realist philosopher, b. Poultney, Vt., grad. Princeton (B.A., 1896) and Harvard (Ph.D., 1899). He taught at Harvard from 1902, becoming professor of philosop...

Perry, William James

(Encyclopedia)Perry, William James, 1927–, U.S. government official, b. Vandergrift, Pa. A Ph.D. in mathematics, former Stanford engineering professor, and founder of a military electronics firm, he served (1977�...

Einstein, Albert

(Encyclopedia)Einstein, Albert īnˈstīn [key], 1879–1955, American theoretical physicist, known for the formulation of the relativity theory, b. Ulm, Germany. He is recognized as one of the greatest physicists ...

Demangeon, Albert

(Encyclopedia)Demangeon, Albert dāmäNzhōNˈ [key], 1872–1940, French geographer, specializing in the study of regional and economic geography. His best-known works include Le Déclin de L'Europe (1920), L'Empi...

Albert, Lake

(Encyclopedia)Albert, Lake, or Albert Nyanza nīănˈzə, nyänˈzä [key], 2,064 sq mi (5,346 sq km), on the Congo (Kinshasa)–Uganda border, E central Africa. The lake is c.100 mi (160 km) long and c.19 mi (30 k...

Albert Achilles

(Encyclopedia)Albert Achilles əkĭlˈēz [key], 1414–86, elector of Brandenburg (1470–86); third son of Elector Frederick I. He succeeded his brother in 1470. Anxious to consolidate Hohenzollern power in Brand...

Albert Canal

(Encyclopedia)Albert Canal, waterway, c.80 mi (130 km) long, N Belgium, from the Meuse River to the Scheldt River; constructed 1930–39. The canal connects the important industrial region around Liège with the po...

Albert Lea

(Encyclopedia)Albert Lea lē [key], city (2020 pop. 18,492), seat of Freeborn co., S Minn., near the Iowa line; inc. 1878. It is a manufacturing and marketing center in a dairy, livesto...