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lever
(Encyclopedia)CE5 Classes of levers: A first-class lever (A), a second-class lever (B), and a third-class lever (C) lever, simple machine consisting of a bar supported at some stationary point along its length ...Lever, Charles James
(Encyclopedia)Lever, Charles James lēˈvər [key], 1806–72, Irish novelist. He began his career as a practicing physician. His early novels appeared periodically in the Dublin University Magazine, whose editorsh...fulcrum
(Encyclopedia)fulcrum: see lever.jack, mechanical device
(Encyclopedia)jack, mechanical device used to multiply a relatively small applied force so that it can lift and support heavy loads, or sometimes, move massive objects into a desired position. The lever jack, often...wheel and axle
(Encyclopedia)CE5 Wheel and axle wheel and axle, simple machine consisting of a wheel mounted rigidly upon an axle or drum of smaller diameter, the wheel and the axle having the same axis. It is fundamentally a...ratchet and pawl
(Encyclopedia)ratchet and pawl, mechanical device that permits motion in one direction only. The ratchet is usually a wheel with slanting teeth. The pawl is a lever tangential to the wheel with one end resting on t...moment
(Encyclopedia)moment, in physics and engineering, term designating the product of a quantity and a distance (or some power of the distance) to some point associated with that quantity. The most theoretically useful...equilibrium
(Encyclopedia)CE5 Equilibrium equilibrium, state of balance. When a body or a system is in equilibrium, there is no net tendency to change. In mechanics, equilibrium has to do with the forces acting on a body. ...Browne, Hablot Knight
(Encyclopedia)Browne, Hablot Knight hăbˈlō [key], pseud. Phiz, 1815–82, English illustrator. At 21 he was chosen by Charles Dickens to illustrate Pickwick Papers. His success was immediate, and in due course h...Bunshaft, Gordon
(Encyclopedia)Bunshaft, Gordon, 1909–90, American architect, b. Buffalo, N.Y. As chief designer for the architectural firm of Skidmore, Owings and Merrill, Bunshaft was responsible for Lever House, New York City'...Browse by Subject
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