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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 (...

work

(Encyclopedia)work, in physics and mechanics, transfer of energy by a force acting to displace a body. Work is equal to the product of the force and the distance through which it produces movement. Although both fo...

centrifuge

(Encyclopedia)centrifuge sĕnˈtrəfyo͞oj [key], device using centrifugal force to separate two or more substances of different density, e.g., two liquids or a liquid and a solid. The centrifuge consists of a fixe...

trade winds

(Encyclopedia)trade winds, movement of air toward the equator, from the NE in the Northern Hemisphere and from the SE in the Southern Hemisphere. The trade winds originate on the equatorial sides of the horse latit...

Murrow, Edward Roscoe

(Encyclopedia)Murrow, Edward Roscoe, 1908–65, American news broadcaster, b. Greensboro, N.C. He joined the Columbia Broadcasting System (CBS) in 1935 and became its European director two years later, assembling a...

Skelton, John

(Encyclopedia)Skelton, John, 1460–1529, English poet and humanist. Tutor to Prince Henry (later Henry VIII), he later (c.1502) became rector of Diss, Norfolk. In 1512 he began to call himself royal orator, a posi...

Prud'hon, Pierre Paul

(Encyclopedia)Prud'hon, Pierre Paul pyĕr pôl prüdôNˈ [key], 1758–1823, French painter; 13th child of a Cluny stonemason. He gained recognition in 1796 with Truth Descending from the Heavens Led by Wisdom (Lo...

producer gas

(Encyclopedia)producer gas, fuel gas consisting chiefly of carbon monoxide and nitrogen. It is prepared in a furnace or generator in which air is forced upward through a burning fuel of coal or coke. Although the f...

heating

(Encyclopedia)CE5 Typical warm-air heating system heating, means of making a building comfortably warm relative to a colder outside temperature. Old, primitive methods of heating a building or a room within it ...

Diego Garcia

(Encyclopedia)Diego Garcia, coral island, 11 sq mi (28 sq km). Indian Ocean, largest island of the Chagos Archipelago, SW of Sri Lanka. Part of the British Indian Ocean Territory, the island was leased (1970) to th...