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Hearst, William Randolph

(Encyclopedia)Hearst, William Randolph, 1863–1951, American journalist and publisher, b. San Francisco. A flamboyant, highly controversial figure, Hearst was nonetheless an intelligent and extremely competent new...

Edison, Thomas Alva

(Encyclopedia)Edison, Thomas Alva, 1847–1931, American inventor, b. Milan, Ohio. A genius in the practical application of scientific principles, Edison was one of the greatest and most productive inventors of his...

condensate

(Encyclopedia)condensate, matter in the form of a gas of atoms, molecules, or elementary particles that have been so chilled that their motion is virtually halted and as a consequence they lose their separate ident...

pendulum

(Encyclopedia)pendulum, a mass, called a bob, suspended from a fixed point so that it can swing in an arc determined by its momentum and the force of gravity. The length of a pendulum is the distance from the point...

Trudeau, Pierre Elliott

(Encyclopedia)Trudeau, Pierre Elliott (Joseph Philippe Pierre Ives Elliott Trudeau) tro͞odōˈ [key], 1919–2000, prime minister of Canada (1968–79, 1980–84), b. Montreal. He attended the Univ. of Montreal, H...

turbine

(Encyclopedia)CE5 Types of turbines turbine, rotary engine that uses a continuous stream of fluid (gas or liquid) to turn a shaft that can drive machinery. A water, or hydraulic, turbine is used to drive electr...

vaudeville

(Encyclopedia)vaudeville vôdˈvĭl [key], originally a light song, derived from the drinking and love songs formerly attributed to Olivier Basselin and called Vau, or Vaux, de Vire. Similar to the English music ha...

superconductivity

(Encyclopedia)superconductivity, abnormally high electrical conductivity of certain substances. The phenomenon was discovered in 1911 by Heike Kamerlingh Onnes, who found that the resistance of mercury dropped sudd...

atmosphere

(Encyclopedia)CE5 Atmosphere atmosphere [Gr.,=sphere of air], the mixture of gases surrounding a celestial body with sufficient gravity to maintain it. Although some details about the atmospheres of other plane...

colloid

(Encyclopedia)colloid kŏlˈoid [key] [Gr.,=gluelike], a mixture in which one substance is divided into minute particles (called colloidal particles) and dispersed throughout a second substance. The mixture is also...