perpetual motion machine of the first kind
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perpetual motion machine of the first kind
(pər′pech·ə·wəl ′mō·shən mə′shēn əv thə ′fərst ′kīnd)
(physics) A mechanism which, once set in motion, continues to do useful work without an input of energy, or which produces more energy than is absorbed in its operation; it violates the principle of conservation of energy.
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McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.
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