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Möbius, Augustus Ferdinand

(Encyclopedia)Möbius, Augustus Ferdinand mōˈbēəs, Ger. möˈbēəs [key],(1790–1868), German mathematician and astronomer, b. Schulpforta, Saxony. A professor of astronomy at the Univ. of Leipzig, he made im...

Borelli, Giovanni Alfonso

(Encyclopedia)Borelli, Giovanni Alfonso jōvänˈnē älfônˈsō bôrĕlˈlē [key], 1608–79, Italian physiologist, physicist, astronomer, and mathematician; son of a Spanish infantryman. His wide interests led ...

Borromini, Francesco

(Encyclopedia)Borromini, Francesco fränchāˈskō bōr-rōmēˈnē [key], 1599–1677, major Italian baroque architect. His first independent commission (begun 1634) was San Carlo alle Quattro Fontane, Rome, one o...

Walras, Léon

(Encyclopedia)Walras, Léon, 1834–1910, French economist. After abandoning his studies in mining engineering, he became a freelance journalist, advancing the causes of economic and social reform. He later became ...

rare earths

(Encyclopedia)rare earths, in chemistry, oxides of the rare-earth metals. They were once thought to be elements themselves. They are widely distributed in the earth's crust and are fairly abundant, although they we...

Robinson, Arthur Howard

(Encyclopedia)Robinson, Arthur Howard, 1915–2004, American cartographer, b. Montreal to American parents, Ph.D Ohio State Univ., 1947. The head of the map division of the Office of Strategic Services for much of ...

radioactivity

(Encyclopedia)CE5 Effects of a magnetic field on the products of radioactivity CE5 Disintegration series: Radioactive decay of radium-226 into lead-206 radioactivity, spontaneous disintegration or decay of t...

international language

(Encyclopedia)international language, sometimes called universal language, a language intended to be used by people of different linguistic backgrounds to facilitate communication among them and to reduce the misun...

Dorsey, Thomas Andrew

(Encyclopedia)Dorsey, Thomas Andrew dôrˈsē [key], 1899–1993, American gospel musician, b. Villa Rica, Ga. He began his career as a blues pianist and songwriter. Later he became a church choir director in Chica...

Davis, George Breckenridge

(Encyclopedia)Davis, George Breckenridge, 1847–1914, American army officer and jurist, b. Ware, Mass., grad. West Point, 1871. His early military service was divided between duty on the Western frontier and teach...