Last Updated
：2025/11/20
perpetual motion machine
Noun
Japanese Meaning
仮説上の装置で、外部からのエネルギー供給なしに永久に運動し、有用な仕事を行うとされるもの / 物理学や疑似科学の文脈で語られる、現実には存在しないとされる永久機関
（ plural ）
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(physics, pseudoscience) 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
Despite decades of experimental attempts, no inventor has succeeded in building a perpetual motion machine that produces more energy than it consumes.
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Despite decades of experimental attempts, no inventor has succeeded in building a perpetual motion machine that produces more energy than it consumes.
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