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Mathews, Max Vernon

(Encyclopedia)Mathews, Max Vernon, 1926–2011, American engineer known as the father of computer music, b. Columbus, Nebr., grad. California Institute of Technology (B.S., 1950), Massachusetts Institute of Technol...

brownstone

(Encyclopedia)brownstone, red to brown variety of sandstone. Its unusual color is caused in some instances by the presence of red iron oxide which acts as a cement, binding the sand grains together. Vast thicknesse...

Rennell, James

(Encyclopedia)Rennell, James, 1742–1830, English cartographer, geographer, and oceanographer. He was surveyor general (1764–77) of Bengal and published A Bengal Atlas (1779). He constructed the first approximat...

Abu al-Fida

(Encyclopedia)Abu al-Fida äˌbo͞o äl-fēˈdä, –fĭdäˈ [key], 1273–1331, Arab historian, b. Damascus. He fought against the Christians in the last period of the Crusades and later became (1310) governor of...

Nordenskjöld, Nils Otto Gustaf

(Encyclopedia)Nordenskjöld, Nils Otto Gustaf, 1869–1928, Swedish geographer and explorer, nephew of Nils Adolf Erik Nordenskjöld. He headed an expedition to Patagonia (1895–97) and later explored the Klondike...

Ptolemy

(Encyclopedia)Ptolemy (Claudius Ptolemaeus), fl. 2d cent. a.d., celebrated Greco-Egyptian mathematician, astronomer, and geographer. He made his observations in Alexandria and was the last great astronomer of ancie...

battleship

(Encyclopedia)battleship, large, armored warship equipped with the heaviest naval guns. The evolution of the battleship, from the ironclad warship of the mid-19th cent., received great impetus from the Civil War. B...

Gruen, Victor

(Encyclopedia)Gruen, Victor gro͞oˈən [key], 1903–80, American architect, often called the inventor of the modern shopping mall, b. Vienna as Viktor David Grünbaum. In Vienna, he studied at the Technological I...

Bowman, Isaiah

(Encyclopedia)Bowman, Isaiah bōˈmən [key], 1878–1950, American geographer, b. Waterloo, Ont., B.S. Harvard, 1905, Ph.D. Yale, 1909. He taught geography at Yale (1905–15) and was director (1915–35) of the A...

Sigüenza y Góngora, Carlos de

(Encyclopedia)Sigüenza y Góngora, Carlos de kärˈlōs ᵺā sēgwānˈsä ē gōngˈgōrä [key], 1645–1700, Mexican writer and humanist. The foremost intellectual figure of colonial Mexico, he wrote on mathem...
 

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