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Nixon, Richard Milhous

(Encyclopedia)Nixon, Richard Milhous, 1913–94, 37th President of the United States (1969–74), b. Yorba Linda, Calif. Soon after his reelection Nixon's popularity plummeted as the growing revelations of the Wa...

harmonic motion

(Encyclopedia)CE5 Harmonic motion is exhibited by a weight vibrating on the end of a spring. In A, the displacement of the object from its equilibrium position and the acceleration of the object are at a maximum...

gun control

(Encyclopedia)gun control, government limitation of the purchase and ownership of firearms. The availability of guns is controlled by nations and localities throughout the world. In the United States the “right o...

minimalism

(Encyclopedia)minimalism, schools of contemporary art and music, with their origins in the 1960s, that have emphasized simplicity and objectivity. In music, the minimalist movement was, like minimal art, a react...

ozone layer

(Encyclopedia)ozone layer or ozonosphere, region of the stratosphere containing relatively high concentrations of ozone, located at altitudes of 12–30 mi (19–48 km) above the earth's surface. Ozone in the ozone...

pinochle

(Encyclopedia)pinochle pēˈnŭˌkəl [key], card game, probably derived from bezique, that was developed in the United States in the 19th cent. Pinochle is played by two, three, or four players, with a deck of 48 ...

factory

(Encyclopedia)factory, place of production characterized by wage labor, the use of machinery, and the division of labor. The large-scale use of machinery differentiates factory production from simple manufacture, a...

capitalism

(Encyclopedia)capitalism, economic system based on private ownership of the means of production, in which personal profit can be acquired through investment of capital and employment of labor. Capitalism is grounde...

Truman, Harry S.

(Encyclopedia)Truman, Harry S., 1884–1972, 33d President of the United States, b. Lamar, Mo. Truman remained active in politics for many years after his retirement, campaigning around the country for Democrat...

concrete

(Encyclopedia)concrete, structural masonry material made by mixing broken stone or gravel with sand, cement, and water and allowing the mixture to harden into a solid mass. The cement is the chemically active eleme...