Perpetual-motion



noun, Mechanics.
1.
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.
noun
1.
Also called perpetual motion of the first kind. motion of a hypothetical mechanism that continues indefinitely without any external source of energy. It is impossible in practice because of friction
2.
Also called perpetual motion of the second kind. motion of a hypothetical mechanism that derives its energy from a source at a lower temperature. It is impossible in practice because of the second law of thermodynamics

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  • Perpetual-motion machine

    A machine that could run forever. A perpetual-motion machine would have to produce at least as much energy as was needed for its operation. According to the second law of thermodynamics, such a machine is impossible, and to date none has ever been successfully demonstrated.

  • Perpetuance

    [per-pech-oo-eyt] /pərˈpɛtʃ uˌeɪt/ verb (used with object), perpetuated, perpetuating. 1. to make . 2. to preserve from extinction or oblivion: to perpetuate one’s name. /pəˈpɛtjʊˌeɪt/ verb 1. (transitive) to cause to continue or prevail: to perpetuate misconceptions v. 1520s, a back-formation from perpetuation or else from Latin perpetuatus, past participle of perpetuare “to make perpetual,” […]



  • Perpetuate

    [per-pech-oo-eyt] /pərˈpɛtʃ uˌeɪt/ verb (used with object), perpetuated, perpetuating. 1. to make . 2. to preserve from extinction or oblivion: to perpetuate one’s name. /pəˈpɛtjʊˌeɪt/ verb 1. (transitive) to cause to continue or prevail: to perpetuate misconceptions v. 1520s, a back-formation from perpetuation or else from Latin perpetuatus, past participle of perpetuare “to make perpetual,” […]

  • Perpetuated

    [per-pech-oo-eyt] /pərˈpɛtʃ uˌeɪt/ verb (used with object), perpetuated, perpetuating. 1. to make . 2. to preserve from extinction or oblivion: to perpetuate one’s name. /pəˈpɛtjʊˌeɪt/ verb 1. (transitive) to cause to continue or prevail: to perpetuate misconceptions v. 1520s, a back-formation from perpetuation or else from Latin perpetuatus, past participle of perpetuare “to make perpetual,” […]



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