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Wheatley, Phillis

(Encyclopedia)Wheatley, Phillis, 1753?–1784, American poet, considered the first important black writer in the United States. Brought from Africa in 1761, she became a house slave for the Boston merchant John Whe...

Bernadotte, Count Folke

(Encyclopedia)Bernadotte, Count Folke fôlˈkə bĕrnädôtˈ, bûrˈnədŏt [key], 1895–1948, Swedish internationalist; nephew of King Gustavus V. He was active in the Swedish Red Cross and became its president ...

Welser

(Encyclopedia)Welser vĕlˈzər [key], German family of wealthy merchants and bankers at Augsburg. It reached the height of its prosperity under Bartholomäus Welser, 1488–1561, who had advanced large sums to Hol...

Russian literature

(Encyclopedia)Russian literature, literary works mainly produced in the historic area of Russia, written in its earliest days in Church Slavonic and after the 17th cent. in the Russian language. During World War ...

Coen Brothers

(Encyclopedia)Coen Brothers, American filmmakers Joel Coen, 1955–, and Ethan Coen, 1958–, both b. St. Louis Park, Minn. Joel studied at New York Univ. Film School (B.A., 1978), Ethan at Princeton (B.A., 1979). ...

serpentine

(Encyclopedia)serpentine sûrˈpəntēn, –tīn [key], hydrous silicate of magnesium. It occurs in crystalline form only as a pseudomorph having the form of some other mineral and is generally found in the form of...

rhenium

(Encyclopedia)rhenium rēˈnēəm [key], metallic chemical element; symbol Re; at. no. 75; at. wt. 186.207; m.p. about 3,180℃; b.p. about 5,625℃; sp. gr. 21.02 at 20℃; valence −1, +2, +3, +4, +5, +6, or +7....

Wallace, David Foster

(Encyclopedia)Wallace, David Foster, 1962–2008, American writer, b. Ithaca, N.Y., grad. Amherst College (B.A., 1985), Univ. of Arizona (M.F.A., 1987). He published his comic first novel, The Broom of the System (...

vanadium

(Encyclopedia)vanadium vənāˈdēəm [key], metallic chemical element; symbol V; at. no. 23; at. wt. 50.9415; m.p. about 1,890℃; b.p. 3,380℃; sp. gr. about 6 at 20℃; valence +2, +3, +4, or +5. Vanadium is a ...

linear programming

(Encyclopedia)linear programming, solution of a mathematical problem concerning maximum and minimum values of a first-degree (linear) algebraic expression, with variables subject to certain stated conditions (restr...