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credit, letter of

(Encyclopedia)credit, letter of, commercial instrument through which a bank or other financial institution instructs a correspondent institution to advance a specified sum of money to the bearer. The document is ca...

circuit breaker

(Encyclopedia)circuit breaker, electric device that, like a fuse, interrupts an electric current in a circuit when the current becomes too high. The advantage of a circuit breaker is that it can be reset after it h...

colchicine

(Encyclopedia)colchicine kŏlˈchəsēnˌ [key], alkaloid extracted from plants of the genus Colchicum and especially from the corms of the autumn crocus, Colchicum autumnale (see meadow saffron). The metabolic eff...

humus

(Encyclopedia)humus hyo͞oˈməs [key], organic matter that has decayed to a relatively stable, amorphous state. It is an important biological constituent of fertile soil. Humus is formed by the decomposing action ...

Huskisson, William

(Encyclopedia)Huskisson, William hŭsˈkĭsən [key], 1770–1830, British statesman. First elected to Parliament in 1796, he was secretary of the treasury (1804–5, 1807–9) but resigned with his close associate...

happening

(Encyclopedia)happening, an artistic event of a theatrical nature, but usually improvised spontaneously without the framework of a plot. The term originated with the creation and performance in 1959 of Allan Kaprow...

Gibbs, Josiah Willard

(Encyclopedia)Gibbs, Josiah Willard, 1839–1903, American mathematical physicist, b. New Haven, Conn., grad. Yale, 1858. He studied abroad and was professor of mathematical physics at Yale from 1871. His great con...

Fuller, John Frederick Charles

(Encyclopedia)Fuller, John Frederick Charles, 1878–1966, British soldier. In World War I, he recognized the importance of mechanized warfare and, as general staff officer of the tank corps, planned the stunning t...

Jacobi, Friedrich Heinrich

(Encyclopedia)Jacobi, Friedrich Heinrich, 1743–1819, German philosopher. Although educated for commerce, he early gave up business and became in 1770 a member of the council for the duchies of Berg and Jülich. A...

Ma Yüan

(Encyclopedia)Ma Yüan mä yüän [key], fl. c.1190–1225, Chinese painter of the Sung dynasty and foremost of the Ma family of painters. He became one of the most important landscape painters of the 12th and 13th...