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Lovelace, Ada

(Encyclopedia)Lovelace, Ada (Augusta Ada King-Noel, Countess of Lovelace), 1815–1852, English mathematician, b. London as Augusta Ada Byron. The daughter of the poet Lord Byron and Anne Isabella Milbanke, she was...

Cartwright, Alexander Joy

(Encyclopedia)Cartwright, Alexander Joy, 1820–92, American baseball player, b. New York City. He worked as a bank teller and a bookseller, and was a volunteer firefighter with the Knickerbocker Fire Engine Compan...

Worcester, Edward Somerset, 6th earl and 2d marquess of

(Encyclopedia)Worcester, Edward Somerset, 6th earl and 2d marquess of wo͝osˈtər [key], 1601?–1667, English soldier and inventor. Known as Lord Herbert after 1628, he received the title earl of Glamorgan in 164...

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...

Popper-Lynkeus, Josef

(Encyclopedia)Popper-Lynkeus, Josef yōˈzĕf pôpˈər-lünˈkāo͝os [key], 1838–1921, Austrian philosopher, social reformer, and inventor. His unpopular views kept him from any academic position, so he worked ...

tractor

(Encyclopedia)tractor, in agriculture, vehicle used to pull such equipment as plows, cultivators, and mowers; to power stationary devices such as saws and winches; and to push snowplows and earth-moving implements....

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 ...

suspension, in vehicles

(Encyclopedia)suspension, in automobiles, system of springs used to suspend the frame, body, engine, and power train above the wheels. Its principal purpose is to lessen the jarring of the automobile that is caused...

joint, in anatomy

(Encyclopedia)joint, in anatomy, juncture between two bones. Some joints are immovable, e.g., those that connect the bones of the skull, which are separated merely by short, tough fibers of cartilage. Movable joint...

vortex

(Encyclopedia)vortex vôrˈtĕks [key], mass of fluid in whirling or rotary motion. To simplify the analysis, vortex motion usually describes motions in a frictionless fluid. In such cases the absence of friction w...