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Stopes, Marie Carmichael

(Encyclopedia) Stopes, Marie CarmichaelStopes, Marie Carmichaelstōps [key], 1880–1958, British paleobotanist and eugenicist, b. Edinburgh, D.Sc. Univ. of London, Ph.D. Univ. of Munich. She lectured…

Goldie, Sir George

(Encyclopedia) Goldie, Sir George (George Goldie Taubman), 1846–1925, British colonial administrator, b. Isle of Man. Goldie entered the Niger River trade in the 1870s, and his company soon dominated…

Ellenborough, Edward Law, 1st earl of

(Encyclopedia) Ellenborough, Edward Law, 1st earl ofEllenborough, Edward Law, 1st earl ofĕlˈənbûrˌə [key], 1790–1871, British statesman; son of the 1st Baron Ellenborough. He served as president of…

National Rifle Association of America

(Encyclopedia) National Rifle Association of America (NRA), group founded (1871) to promote shooting, hunting, firearm safety, and wildlife conservation. The NRA has more than 3 million members. The…

thyristor

(Encyclopedia) thyristor, semiconductor switch used chiefly in power-control applications. Also called a silicon-controlled rectifier (SCR; see rectifier), it is a variation of the transistor. A…

Hugenberg, Alfred

(Encyclopedia) Hugenberg, AlfredHugenberg, Alfredälˈfrĕt h&oomacr;ˈgənbĕrkh [key], 1865–1951, German financier and politician. He was president of the directorate of the Krupp firm (1909–18),…

corporation

(Encyclopedia) corporation, in law, organization enjoying legal personality for the purpose of carrying on certain activities. Most corporations are businesses for profit; they are usually organized…

Ross, Edward Alsworth

(Encyclopedia) Ross, Edward Alsworth, 1866–1951, American sociologist, b. Virden, Ill., Ph.D. Johns Hopkins, 1891. He taught economics (1893–1900) at Stanford Univ., from which he was ousted in a…

Helmand

(Encyclopedia) Helmand or HelmundHelmandboth: hĕlˈmənd [key], river, c.700 mi (1,130 km) long, rising in the Hindu Kush Mts., NE Afghanistan and flowing generally SW to the Sistan basin, SW…

microprocessor

(Encyclopedia) microprocessor, integrated circuit containing the arithmetic, logic, and control circuitry required to interpret and execute instructions from a computer program. When combined with…