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krypton
(Encyclopedia)krypton krĭpˈtŏn [key] [Gr.,=hidden], gaseous chemical element; symbol Kr; at. no. 36; at. wt. 83.798; m.p. −156.6℃; b.p. −152.3℃; density 3.73 grams per liter at STP; valence usually 0. Kr...classic revival
(Encyclopedia)classic revival, widely diffused phase of taste (known as neoclassic) which influenced architecture and the arts in Europe and the United States during the last years of the 18th and the first half of...humidity
(Encyclopedia)humidity, moisture content of the atmosphere, a primary element of climate. Humidity measurements include absolute humidity, the mass of water vapor per unit volume of natural air; relative humidity (...Barnard, Henry
(Encyclopedia)Barnard, Henry, 1811–1900, American educator, b. Hartford, Conn., grad. Yale, 1830. He studied law and was admitted to the bar in 1835. As a member (1837–39) of the Connecticut legislature, he ori...Sandburg, Carl
(Encyclopedia)Sandburg, Carl, 1878–1967, American poet, journalist, and biographer, b. Galesburg, Ill. The son of poor Swedish immigrants, he left school at the age of 13 and became a day laborer. He served in th...Baldwin, James
(Encyclopedia)Baldwin, James, 1924–87, American author, b. New York City. He spent an impoverished boyhood in Harlem, became a Pentecostal preacher at 14, and left the church three years later. He moved to Paris ...pump
(Encyclopedia)pump, device to lift, transfer, or increase the pressure of a fluid (gas or liquid) or to create a vacuum in an enclosed space by the removal of a gas (see vacuum pumps under vacuum). The centrifugal ...Vishniac, Roman
(Encyclopedia)Vishniac, Roman vĭshˈnēăk [key], 1897–1990, Russian-American biologist, photographer, linguist, art historian, and philosopher, b. Pavlosk, near St. Petersburg. Vishniac took degrees in medicine...geometric problems of antiquity
(Encyclopedia)geometric problems of antiquity, three famous problems involving elementary geometric constructions with straight edge and compass, conjectured by the ancient Greeks to be impossible but not proved to...Marx, Karl
(Encyclopedia)Marx, Karl, 1818–83, German social philosopher, the chief theorist of modern socialism and communism. In 1847 Marx joined the Communist League and with Engels wrote for it the famous Communist M...Browse by Subject
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