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Carver, George Washington

(Encyclopedia)Carver, George Washington, 1864?–1943, American agricultural chemist, b. Diamond, Mo., grad. Iowa State College (now Iowa State Univ.; B.S., 1894; M.A. 1896). Born a slave, he later, as a free man, ...

Bayonne, city, United States

(Encyclopedia)Bayonne bāyōnˈ [key], city (2020 pop. 71,686), Hudson co., NE N.J., on a 3-mi (4.8-km) pen...

behavior therapy

(Encyclopedia)behavior therapy or behavior modification, in psychology, treatment of human behavioral disorders through the reinforcement of acceptable behavior and suppression of undesirable behavior. The techniqu...

range

(Encyclopedia)range, large area of land unsuited to cultivation but supporting native grasses and other plants suitable for livestock grazing. Principal areas in the western hemisphere are the pampas of South Ameri...

sphagnum

(Encyclopedia)sphagnum sfăgˈnəm [key] or peat moss, any species of the large and widely distributed genus Sphagnum, economically the most valuable moss. Sphagnums, the principal constituent of peat, typically gr...

Richards, I. A.

(Encyclopedia)Richards, I. A. (Ivor Armstrong Richards), 1893–1979, English literary critic. Richards was one of the founders of the school of interpretation known as the New Criticism, which stressed an awarenes...

personal watercraft

(Encyclopedia)personal watercraft (PWC), a lightweight vessel usually less than 16 ft (5 m) long that uses an inboard water jet pump, powered by an internal-combustion engine, as its primary source of propulsion. T...

microscope

(Encyclopedia)CE5 Compound microscope microscope, optical instrument used to increase the apparent size of an object. The electron microscope, which is not limited by the powers of optical lenses and light,...

du Vigneaud, Vincent

(Encyclopedia)du Vigneaud, Vincent dyo͞o vēnˈyō [key], 1901–78, American biochemist, b. Chicago. He was professor of biochemistry and head of the department at George Washington Univ. school of medicine (1932...

Dale, Sir Henry Hallett

(Encyclopedia)Dale, Sir Henry Hallett, 1875–1968, English scientist. For his study of acetylcholine as agent in the chemical transmission of nerve impulses he shared with Otto Loewi the 1936 Nobel Prize in Physio...