bn:00061688n
Noun Concept
Categories: Perpetual motion, Articles with short description, Pseudoscience, All articles needing additional references
EN
perpetual motion  free energy device  Bedini Energizer  Free-Energy Machines  Free energy
EN
Motion that continues indefinitely without any external source of energy; impossible in practice because of friction WordNet 3.0
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EN
Motion that continues indefinitely without any external source of energy; impossible in practice because of friction WordNet 3.0 & Open English WordNet
Perpetual motion is the motion of bodies that continues forever in an unperturbed system. Wikipedia
The property of an imaginary device that, once started, continues to move forever with no input of external energy Wikipedia Disambiguation
Motion that continues indefinitely without any external source of energy. Wikipedia Disambiguation
Work continuously done without an external supply of energy Wikidata
The motion of some hypothetical device that continues forever with no obvious input of energy in violation of the laws of thermodynamics. Wiktionary