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MacCracken, Henry Mitchell

(Encyclopedia)MacCracken, Henry Mitchell, 1840–1918, American educator, b. Oxford, Ohio, grad. Miami Univ. (Ohio), 1857. After a brief teaching career MacCracken entered the Presbyterian ministry in 1863. From 18...

MacKinnon, Roderick

(Encyclopedia)MacKinnon, Roderick, 1956–, American biochemist, b. Burlington, Mass., M.D. Tufts Univ., 1982. MacKinnon was on the faculty at Harvard Medical School from 1989–96 and has been a professor at the H...

Crichton, Michael

(Encyclopedia)Crichton, Michael krīˈtən [key], 1942–2008, American novelist, screenwriter, and director, b. Chicago, grad. Harvard Medical School (1969). He wrote several thrillers under a pseudonym while a st...

Magendie, François

(Encyclopedia)Magendie, François fräNswäˈ mäzhäNdēˈ [key], 1783–1855, French physician. He taught at the Collège de France and is considered a founder of experimental physiology. He distinguished the mot...

terrace

(Encyclopedia)terrace, a level field built on top of a hillslope into the floor of a deep valley to improve cultivation of crops. Terracing uses the runoff from the hill to increase soil retentiveness and arability...

evaporimeter

(Encyclopedia)evaporimeter ĭvăpˌərĭmˈətər [key], instrument that measures the rate of evaporation of water into the atmosphere, sometimes called an atmometer. Evaporimeters are of two types, those that meas...

Morton, Rosalie Slaughter

(Encyclopedia)Morton, Rosalie Slaughter, 1876–1955, American surgeon, b. Lynchburg, Va., M.D. Woman's Medical College of Pennsylvania, 1897. She was the first woman faculty member of both the New York Polyclinic ...

Porter, Rodney Robert

(Encyclopedia)Porter, Rodney Robert, 1917–85, British biochemist, Ph.D. Cambridge, 1948. He was a researcher at the National Institute of Medical Research, England (1949–1960), and a professor at St. Mary's Hos...

crusher

(Encyclopedia)crusher, machine used to reduce materials such as ore, coal, stone, and slag to particle sizes that are convenient for their intended uses. Crushers operate by slowly applying a large force to the mat...

DeBakey, Michael Ellis

(Encyclopedia)DeBakey, Michael Ellis dəbāˈkē [key], 1908–2008, American surgeon, b. Lake Charles, La. While still at Tulane medical school (M.D., 1932), DeBakey developed the roller pump, which later became a...