- perpetual motion machine
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a hypothetical device that exhibits perpetual motion, especially one that does useful work with no input of energy
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perpetual motion machine
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perpetual motion machine — amžinasis variklis statusas T sritis fizika atitikmenys: angl. perpetual motion machine; perpetuum mobile vok. Perpetuum mobile rus. вечный двигатель, m pranc. moteur à mouvement perpétuel, m; moteur perpétuel, m … Fizikos terminų žodynas
perpetual motion machine — noun a machine that can continue to do work indefinitely without drawing energy from some external source; impossible under the law of conservation of energy • Hypernyms: ↑machine * * * noun : a device inherently impossible under the law of… … Useful english dictionary
perpetual motion machine — a device which will turn forever because there is no friction between the moving part and the stationary part. Although friction can be greatly reduced, it can never be eliminated … Dictionary of automotive terms
Perpetual Motion (short story) — Perpetual Motion is a science fiction short story written by L. Sprague de Camp, a story in his Viagens Interplanetarias series. It was first published under the title Wide Open Planet in the magazine Future in the issue for September October,… … Wikipedia
Perpetual motion — For other uses, see Perpetual motion (disambiguation). Robert Fludd s 1618 water screw perpetual motion machine from a 1660 wood engraving. This device is widely credited as the first recorded attempt to describe such a device in order to produce … Wikipedia
perpetual motion — Mech. the motion of a theoretical mechanism that, without any losses due to friction or other forms of dissipation of energy, would continue to operate indefinitely at the same rate without any external energy being applied to it. [1585 95] * * * … Universalium
perpetual motion — A situation where a device will turn forever because there is no friction between the moving part and the stationary part. Although friction can be greatly reduced, it can never be eliminated. Thus a perpetual motion machine is impossible … Dictionary of automotive terms
Perpetual motion — Motion Mo tion, n. [F., fr. L. motio, fr. movere, motum, to move. See {Move}.] 1. The act, process, or state of changing place or position; movement; the passing of a body from one place or position to another, whether voluntary or involuntary;… … The Collaborative International Dictionary of English
History of perpetual motion machines — The history of perpetual motion machines dates back to the Middle Ages. For millennia, it was not clear whether perpetual motion devices were possible or not, but the development of modern thermodynamics has indicated that they are impossible.… … Wikipedia
perpetual motion — per.petual motion n [U] the ability of a machine to always continue moving without getting energy from anywhere else, which is not considered possible … Dictionary of contemporary English
