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Joule, James Prescott

(Encyclopedia)Joule, James Prescott jo͞ol, joul [key], 1818–89, English physicist. His scientific researches began in his youth when he invented an electromagnetic engine. Joule made valuable contributions to th...

winch

(Encyclopedia)winch, mechanical device for hauling or lifting consisting essentially of a movable drum around which a cable is wound so that rotation of the drum produces a drawing force at the end of the cable. A ...

crane, machine

(Encyclopedia)crane, hoisting machine for lifting heavy loads and transferring them from one place to another, ordinarily over distances of not more than 200 ft (60 m). Cranes have a long reach and can lift loads t...

Stephenson, George

(Encyclopedia)Stephenson, George, 1781–1848, British engineer, noted as a locomotive builder. He learned to read and write in night school at the age of 18, while working in a colliery. He constructed (1814) a tr...

skywriting

(Encyclopedia)skywriting, advertising medium in which aircraft spell out trade names and sales slogans in the sky by means of the controlled emission of thick smoke. The technique was first developed (1922) by J. C...

control systems

(Encyclopedia)control systems, combinations of components (electrical, mechanical, thermal, or hydraulic) that act together to maintain actual system performance close to a desired set of performance specifications...

Fulton, Robert

(Encyclopedia)Fulton, Robert, 1765–1815, American inventor, engineer, and painter, b. near Lancaster, Pa. He was a man remarkable for his many talents and his mechanical genius. An expert gunsmith at the time of ...

Whitehead, Gustave Albin

(Encyclopedia)Whitehead, Gustave Albin, 1874–1927, German inventor and airplane pioneer, b. Gustav Albin Weisskopf. He immigrated to the United States in 1893 and later Americanized his name, but never became a c...

speedometer

(Encyclopedia)speedometer, instrument that indicates speed. A cable from an automotive speedometer is attached to the rear of the transmission of an automobile; the cable turns at a rate proportional to the speed o...

Yaroslavl

(Encyclopedia)Yaroslavl yərəsläˈvəl [key], city (1991 est. pop. 640,000), capital of Yaroslavl region, E European Russia, on the upper Volga River. It is a river port, a major rail junction, and a center of in...