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Cartwright, Edmund

(Encyclopedia)Cartwright, Edmund, 1743–1823, English inventor and clergyman. He was the inventor of an imperfect power loom that, when finally patented (1785), became the parent of the modern loom. It was the fir...

over-the-counter

(Encyclopedia)over-the-counter, method of buying and selling securities outside the organized stock exchange. Unlike an organized stock exchange, the over-the-counter market is composed of dealers who negotiate mos...

Oppenheimer, J. Robert

(Encyclopedia)Oppenheimer, J. Robert ŏpˈənhīˌmər [key], 1904–67, American physicist, b. New York City, grad. Harvard (B.A., 1925), Ph.D. Univ. of Göttingen, 1927. He taught at the Univ. of California and t...

O. Henry

(Encyclopedia)O. Henry, pseud. of William Sydney Porter, 1862–1910, American short-story writer, b. Greensboro, N.C. He went to Texas in 1882 and worked at various jobs—as teller in an Austin bank (1891–94) a...

La Tour, Georges de

(Encyclopedia)La Tour, Georges de zhôrzh də lä to͞or [key], 1593–1652, French painter. By 1618 he was settled at Lunéville, in his native Lorraine. He bore the title of painter to the king in 1639. La Tour p...

Snorri Sturluson

(Encyclopedia)Snorri Sturluson or Sturleson snôrˈrē stürˈlüsôn, –lĕsôn [key], 1178–1241, Icelandic chieftain, historian, critic, and saga teller, the leading figure in medieval Norse literature. He was...

defibrillator

(Encyclopedia)defibrillator, device that delivers an electrical shock to the heart in order to stop certain forms of rapid heart rhythm disturbances (arrhythmias). The shock changes a fibrillation to an organized r...

grinding

(Encyclopedia)grinding, process by which surface material is removed from an object, usually metal, by the abrasive action of a rotating wheel or a moving belt that contains abrasive grains. A grinding wheel can be...

efficiency

(Encyclopedia)efficiency. 1 In business and industry, see industrial management; productivity. 2 In physics, seemachine; work. ...

combing

(Encyclopedia)combing, process that follows carding in the preparation of fibers for spinning, lays the fibers parallel, and removes noils (short fibers). The modern combing machine is a specialized carding machine...