Biography Category
semiconductor switch used chiefly in power-control applications. Also called a silicon-controlled rectifier (SCR; see rectifier), it is a variation of...
(g d) (KEY) , 1862–1932, American geographer and cartographer, b. Stewartville, Minn., grad. Univ. of Minnesota, 1889, Ph.D. Univ. of Pennsylvania, ...
1730–94, Scottish explorer in Africa. He explored Roman ruins in N Africa (1755) from Tunis to Tripoli and visited Crete, Rhodes, and Asia Minor. In...
1890–1956, American educator, b. Delhi, N.Y., grad. Cornell Univ., 1910, Ph.D. Columbia, 1914; son of James Earl Russell. He was dean (1917–23) of...
(d k´str ) (KEY) , 1883–1950, American educator and civic administrator, b. Cleveland, grad. Univ. of Iowa, 1903. After graduate work at the Univ. ...
1888–1959, American educator, b. Valentine, Nebr., grad. Univ. of Michigan (B.A., 1910; M.A., 1915). He taught there from 1913 to 1917. From 1918 to...