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Baldwin, Abraham

(Encyclopedia)Baldwin, Abraham, 1754–1807, American political leader, b. Guilford, Conn. After serving as a chaplain in the American Revolution, he studied law and in 1784 was admitted to practice in Georgia. He ...

Ortelius, Abraham

(Encyclopedia)Ortelius, Abraham ôrtēˈlyəs [key], 1527–98, Flemish geographer, of German origin. Next to his contemporary Mercator, he is the most renowned of the 16th-century Flemish school of geography. He t...

ether, in physics and astronomy

(Encyclopedia)ether or aether, in physics and astronomy, a hypothetical medium for transmitting light and heat (radiation), filling all unoccupied space; it is also called luminiferous ether. In Newtonian physics a...

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...

Albert Nile

(Encyclopedia)Albert Nile, river, Uganda: see Nile. ...