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compressor

(Encyclopedia)compressor, machine that decreases the volume of air or other gas by the application of pressure. Compressor types range from the simple hand pump and the piston-equipped compressor used to inflate ti...

boron

(Encyclopedia)boron bōrˈŏn [key] [New Gr. from borax], chemical element; symbol B; at. no. 5; interval in which at. wt. ranges 10.806–10.821; m.p. about 2,300℃; sublimation point about 2,550℃; sp. gr. 2.3 ...

Dos Passos, John Roderigo

(Encyclopedia)Dos Passos, John Roderigo, 1896–1970, American novelist, b. Chicago, grad. Harvard, 1916. He subsequently studied in Spain and served as a World War I ambulance driver in France and Italy. In his fi...

Petra

(Encyclopedia)Petra pēˈtrə [key], ancient city, in present-day Jordan, known to the Arabs as Wadi Musa for the stream that flows through it. A narrow, winding pass between towering walls leads to the flat, open ...

cave

(Encyclopedia)cave, a cavity in the earth's surface usually large enough for a person to enter. Caves may be formed by the chemical and mechanical action of a stream upon soluble or soft rock, of rainwater seeping ...

National Aeronautics and Space Administration

(Encyclopedia)National Aeronautics and Space Administration (NASA), civilian agency of the U.S. federal government with the mission of conducting research and developing operational programs in the areas of space e...

Rumsfeld, Donald Henry

(Encyclopedia)Rumsfeld, Donald Henry, 1932–2021, American government official, b. Chicago, Princeton Univ. (B.A., 1954). After graduating college, Rumsfeld enliste...

Mojave Desert

(Encyclopedia)Mojave or Mohave Desert, c.15,000 sq mi (38,850 sq km), region of low, barren mountains and flat valleys, 2,000 to 5,000 ft (610–1,524 m) high, S Calif.; part of the Great Basin of the United States...

DeLillo, Don

(Encyclopedia)DeLillo, Don dəlĭlˈō [key], 1936–, American novelist, b. New York City, grad. Fordham (1958). DeLillo is an accomplished prose stylist with a dark vision and mordant wit. In a steady stream of n...

expressionism

(Encyclopedia)expressionism, term used to describe works of art and literature in which the representation of reality is distorted to communicate an inner vision. The expressionist transforms nature rather than imi...