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Physics Girl | Are perpetual motion machines possible? | Season 1 | Episode 11 | PBS

By Owner - Physics Girl - Powered By PBSFrom pbs.org
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A wheel that spins forever; a bird that never quenches its thirst; a clock that never stops ticking, an endless source of free energy. These are but the dreams of inventors striving to make perpetual motion machines, machines that can work forever without any energy input. Are these machines possible without violating the laws of physics? No.

Tags

Energy
Friction
Loss
Heat
Motion
Machine
Thermodynamics
Impossible
Law
Efficiency

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