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  2. Pelton wheel - Wikipedia

    en.wikipedia.org/wiki/Pelton_wheel

    The Pelton wheel or Pelton Turbine is an impulse -type water turbine invented by American inventor Lester Allan Pelton in the 1870s. [1] [2] The Pelton wheel extracts energy from the impulse of moving water, as opposed to water's dead weight like the traditional overshot water wheel. Many earlier variations of impulse turbines existed, but they ...

  3. Water wheel - Wikipedia

    en.wikipedia.org/wiki/Water_wheel

    A water wheel is a machine for converting the energy of flowing or falling water into useful forms of power, often in a watermill. A water wheel consists of a wheel (usually constructed from wood or metal), with a number of blades or buckets arranged on the outside rim forming the driving car. Water wheels were still in commercial use well into ...

  4. Flywheel energy storage - Wikipedia

    en.wikipedia.org/wiki/Flywheel_energy_storage

    A typical system consists of a flywheel supported by rolling-element bearing connected to a motor–generator. The flywheel and sometimes motor–generator may be enclosed in a vacuum chamber to reduce friction and energy loss. First-generation flywheel energy-storage systems use a large steel flywheel rotating on mechanical bearings.

  5. Hamster powered generator: It's real | TechCrunch

    techcrunch.com/.../hamter-powered-generator-its-real

    You need to do your part to counter that. You need a Hamster Powered Generator. Just like the jokes you’d tell about your first beater car, the HPG is a hamster wheel that turns a dynamo and ...

  6. History of perpetual motion machines - Wikipedia

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

    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. Despite this, many attempts have been made to construct such machines, continuing into modern times.

  7. Artificial gravity - Wikipedia

    en.wikipedia.org/wiki/Artificial_gravity

    Artificial gravity is the creation of an inertial force that mimics the effects of a gravitational force, usually by rotation. [ 1] Artificial gravity, or rotational gravity, is thus the appearance of a centrifugal force in a rotating frame of reference (the transmission of centripetal acceleration via normal force in the non-rotating frame of ...

  8. Flywheel - Wikipedia

    en.wikipedia.org/wiki/Flywheel

    A flywheel is a mechanical device that uses the conservation of angular momentum to store rotational energy, a form of kinetic energy proportional to the product of its moment of inertia and the square of its rotational speed. In particular, assuming the flywheel's moment of inertia is constant (i.e., a flywheel with fixed mass and second ...

  9. Slot machine - Wikipedia

    en.wikipedia.org/wiki/Slot_machine

    Slot machine. A slot machine, fruit machine ( British English ), poker machine or pokies ( Australian English and New Zealand English) is a gambling machine that creates a game of chance for its customers. A slot machine's standard layout features a screen displaying three or more reels that "spin" when the game is activated.

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