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Perpetual motion - Wikipedia Perpetual motion is the motion of bodies that continues forever in an unperturbed system A perpetual motion machine is a hypothetical machine that can do work indefinitely without an external energy source
Perpetual motion | Definition Facts | Britannica Perpetual motion, the action of a device that, once set in motion, would continue in motion forever, with no additional energy required to maintain it Such devices are impossible on grounds stated by the first and second laws of thermodynamics
24. 3: Perpetual Motion Machines - Physics LibreTexts Generally they are divided into two types, perpetual motion machines of the first and second kinds Perpetual motion machines of the first kind violate the conservation of energy, while perpetual motion machines of the second kind violate the second law of thermodynamics
How To Choose a Continuous Passive Motion Machine: For Knees . . . A continuous passive motion machine, also known as a CPM machine, is a motorized device used to passively take a joint through its range of motion As part of a comprehensive rehabilitation program, it helps promote mobility, pain relief, and increased circulation
History of perpetual motion machines - Wikipedia The history of perpetual motion machines dates at least back to the Middle Ages For millennia, it was not clear whether perpetual motion devices were possible or not, but modern theories of thermodynamics have shown that they are impossible
Motion Automation Intelligence As a leading supplier of automation products and motion control solutions, we’ve brought together the best minds in industrial automation from across the United States