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New General Catalog
(Encyclopedia)New General Catalog (NGC), standard reference list of nebulae (see nebula). It is based on the General Catalog, published in 1864, which included 2,500 nebulae cataloged by William Herschel and an add...Chuquet, Nicolas
(Encyclopedia)Chuquet, Nicolas nēkôläˈ shükāˈ [key], c.1450–1500, French mathematician, probably b. Paris. Little is known of Chuquet's life. At Lyons in 1484 he composed a manuscript on the science of num...program trading
(Encyclopedia)program trading, a form of securities trading, also known as index arbitrage. Program traders exploit the price discrepancies between indexes of stocks and futures contracts by using sophisticated com...Fogazzaro, Antonio
(Encyclopedia)Fogazzaro, Antonio äntôˈnyō fōgät-tsäˈrō [key], 1842–1911, Italian novelist and poet. His first work was a verse romance, Miranda (1874). Primarily concerned with moral issues, he was parti...Still, Clyfford
(Encyclopedia)Still, Clyfford, 1904–80, American painter, b. Grandin, N.Dak. A brilliant painter, he was one of the founders of abstract expressionism, although never one of the style's best-known practitioners. ...tanzanite
(Encyclopedia)tanzanite tănzănˈīt [key], beautiful gemstone discovered in 1967 in the Umba Valley near the Usambara Mts. in Tanzania, a precious variety of the mineral zoisite, a calcium aluminum silicate. Zois...Rosmini-Serbati, Antonio
(Encyclopedia)Rosmini-Serbati, Antonio äntōˈnyō rōzmēˈnē-sĕrbäˈtē [key], 1797–1855, Italian theologian. Ordained a priest in 1821, he attempted to establish a philosophical system based on Roman Catho...Gesner, Konrad von
(Encyclopedia)Gesner, Konrad von kônˈrät fən gĕsˈnər [key], 1516–65, Swiss scientist and bibliographer. Gesner was noted for his scholarship and erudition in almost every field of knowledge. He lived in Z...Goldmark, Peter Carl
(Encyclopedia)Goldmark, Peter Carl, 1906–77, Hungarian-American engineer, b. Budapest. He studied at the Univ. of Vienna (B.S., 1929, Ph.D., 1931); worked for a radio company in England (1931–33). After emigrat...turquoise
(Encyclopedia)turquoise, hydrous phosphate of aluminum and copper, Al2(OH)3PO4·H2O+Cu, used as a gem. It occurs rarely in crystal form, but is usually cryptocrystalline. Turquoise is opaque and has a waxy luster; ...Browse by Subject
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