+Perpetual motion describes a hypothetical machine capable of operating indefinitely without any external [Energy](/wiki/energy) input. Such devices are impossible under known [Physics](/wiki/physics) laws, fundamentally violating the first and second laws of [Thermodynamics](/wiki/thermodynamics).
+## See also
+- [Energy](/wiki/energy)
+- [Thermodynamics](/wiki/thermodynamics)
+- [Entropy](/wiki/entropy)
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