Why don't perpetual motion machines ever work? - Netta Schramm

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Why don't perpetual motion machines ever work? - Netta Schramm with tags ted, ted-ed, ted education, ted ed, netta schramm, perpetual motion, perpetual motion machine, energy, thermodynamics, bhaskara the learned, robert boyle, magnet, wheel, renewable energy, first law of thermodynamics, second law of thermodynamics, light bulb, battery, capillary action