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Why don’t perpetual motion machines ever work? | The Kid Should See This

Perpetual motion machines — devices that can do work indefinitely without any external energy source — have captured many inventors’ imaginations because they could totally transform our relationship with energy. There’s just one problem: they don’t work. Why not? Enter one or more laws of thermodynamics—‘thermo’ meaning heat and ‘dynamics’ referring to work—which are violated…

Source: Why don’t perpetual motion machines ever work? | The Kid Should See This

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