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  2. History of perpetual motion machines - Wikipedia

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

    Leonardo da Vinci made a number of drawings of devices he hoped would make free energy. Leonardo da Vinci was generally against such devices, but drew and examined numerous overbalanced wheels. [3] [4] Mark Anthony Zimara, a 16th-century Italian scholar, proposed a self-blowing windmill. [5] Various scholars in this period investigated the topic.

  3. Thermodynamic free energy - Wikipedia

    en.wikipedia.org/wiki/Thermodynamic_free_energy

    The free energy is the portion of any first-law energy that is available to perform thermodynamic work at constant temperature, i.e., work mediated by thermal energy. Free energy is subject to irreversible loss in the course of such work. [1] Since first-law energy is always conserved, it is evident that free energy is an expendable, second-law ...

  4. Steorn - Wikipedia

    en.wikipedia.org/wiki/Steorn

    Steorn Ltd (/ ˈ s t j ɔːr n /) was a small, private technology development company based in Dublin, Ireland.In August 2006, it announced that it had developed a technology to provide "free, clean, and constant energy" via an apparent perpetual motion machine, something which is contrary to the law of conservation of energy, a fundamental principle of physics.

  5. Free energy suppression conspiracy theory - Wikipedia

    en.wikipedia.org/wiki/Free_energy_suppression...

    Free energy suppression (or new energy suppression) is a conspiracy theory that technologically viable, pollution-free, no-cost energy sources are being suppressed by governments, corporations, or advocacy groups. [1][2] Devices allegedly suppressed include perpetual motion machines, cold fusion generators, torus -based generators, reverse ...

  6. 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 ]

  7. Free energy - Wikipedia

    en.wikipedia.org/wiki/Free_energy

    Free-energy relationship, a relationship in physical organic chemistry. Principle of minimum energy, a thermodynamic formulation based on the second law. Thermodynamic free energy, the energy in a physical system that can be converted to do work, including: Gibbs free energy. Landau free energy (also known as grand potential)

  8. Work (thermodynamics) - Wikipedia

    en.wikipedia.org/wiki/Work_(thermodynamics)

    Thermodynamic work is one of the principal kinds of process by which a thermodynamic system can interact with and transfer energy to its surroundings. This results in externally measurable macroscopic forces on the system's surroundings, which can cause mechanical work, to lift a weight, for example, [1] or cause changes in electromagnetic, [2] [3] [4] or gravitational [5] variables.

  9. Helmholtz free energy - Wikipedia

    en.wikipedia.org/wiki/Helmholtz_free_energy

    e. In thermodynamics, the Helmholtz free energy (or Helmholtz energy) is a thermodynamic potential that measures the useful work obtainable from a closed thermodynamic system at a constant temperature (isothermal). The change in the Helmholtz energy during a process is equal to the maximum amount of work that the system can perform in a ...