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  2. Perpetual motion - Wikipedia

    en.wikipedia.org/wiki/Perpetual_motion

    A perpetual motion machine of the first kind produces work without the input of energy. It thus violates the law of conservation of energy. A perpetual motion machine of the second kind is a machine that spontaneously converts thermal energy into mechanical work. When the thermal energy is equivalent to the work done, this does not violate the ...

  3. History of perpetual motion machines - Wikipedia

    en.wikipedia.org/wiki/History_of_perpetual...

    Early designs of perpetual motion machines were done by Indian mathematician–astronomer Bhaskara II, who described a wheel (Bhāskara's wheel) that he claimed would run forever. [2] A drawing of a perpetual motion machine appeared in the sketchbook of Villard de Honnecourt, a 13th-century French master mason and architect.

  4. Magnet motor - Wikipedia

    en.wikipedia.org/wiki/Magnet_motor

    Example of a magnet motor design. The predominantly attracting orientation of the magnets apparently leads to a perpetual rotary motion. A hypothetical magnet motor works with permanent magnets in stator and rotor. By a special arrangement of the attracting and repelling poles, a rotational movement of the rotor is supposedly permanently ...

  5. Category:Perpetual motion - Wikipedia

    en.wikipedia.org/wiki/Category:Perpetual_motion

    This page was last edited on 15 November 2024, at 05:32 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  6. Second law of thermodynamics - Wikipedia

    en.wikipedia.org/wiki/Second_law_of_thermodynamics

    Before the establishment of the second law, many people who were interested in inventing a perpetual motion machine had tried to circumvent the restrictions of first law of thermodynamics by extracting the massive internal energy of the environment as the power of the machine. Such a machine is called a "perpetual motion machine of the second ...

  7. Brownian ratchet - Wikipedia

    en.wikipedia.org/wiki/Brownian_ratchet

    Schematic figure of a Brownian ratchet. In the philosophy of thermal and statistical physics, the Brownian ratchet or Feynman–Smoluchowski ratchet is an apparent perpetual motion machine of the second kind (converting thermal energy into mechanical work), first analysed in 1912 as a thought experiment by Polish physicist Marian Smoluchowski. [1]

  8. Newman's energy machine - Wikipedia

    en.wikipedia.org/wiki/Newman's_energy_machine

    Newman's Energy Machine was a DC motor which the inventor, Joseph Newman, claimed to produce mechanical power exceeding the electrical power being supplied to it. In 1979, Newman attempted to patent the device, but it was rejected by the United States Patent Office as being a perpetual motion machine . [ 1 ]

  9. Bhāskara's wheel - Wikipedia

    en.wikipedia.org/wiki/Bhāskara's_wheel

    Like all perpetual-motion machines, Bhaskara's wheel is a long-discredited mechanism. To truly overbalance the wheel (so that torque in one direction is greater than the other) and cause motion, the radius of the spokes would have to be altered throughout the course of the wheel's motion.