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  2. 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 ...

  3. 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 ...

  4. 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. A drawing of a perpetual motion machine appeared in the sketchbook of Villard de Honnecourt, a 13th-century French master mason and architect.

  5. Wheel speed sensor - Wikipedia

    en.wikipedia.org/wiki/Wheel_speed_sensor

    The most common wheel speed sensor system consists of a ferromagnetic toothed reluctor ring and a sensor (which can be passive or active). The tone wheel is typically made of steel and may be an open-air design, or sealed (as in the case of unitized bearing assemblies). The number of teeth is chosen as a trade-off between low-speed sensing ...

  6. Water turbine - Wikipedia

    en.wikipedia.org/wiki/Water_turbine

    A water turbine is a rotary machine that converts kinetic energy and potential energy of water into mechanical work. Water turbines were developed in the 19th century and were widely used for industrial power prior to electrical grids. Now, they are mostly used for electric power generation.

  7. List of Hammond organs - Wikipedia

    en.wikipedia.org/wiki/List_of_Hammond_organs

    The first organ produced in the deeper Model B cabinet, to accommodate the chorus generator [7] B-A. 1938 [8] Model B-C style organ with built-in player organ mechanism [9] (possibly Duo-Art ), custom built by Aeolian-Skinner. [10] BV. 1946–1949 [6] Same as Model B-C but with the Hammond Vibrato and Vibrato Chorus.

  8. Electrostatic generator - Wikipedia

    en.wikipedia.org/wiki/Electrostatic_generator

    An electrostatic generator, or electrostatic machine, is an electrical generator that produces static electricity, or electricity at high voltage and low continuous current. The knowledge of static electricity dates back to the earliest civilizations, but for millennia it remained merely an interesting and mystifying phenomenon , without a ...

  9. Wheel Horse - Wikipedia

    en.wikipedia.org/wiki/Wheel_Horse

    The Toro Company (TTC) 1958 Wheel Horse Rj-58 garden tractor. 1988 Wheel Horse 520-H garden tractor. Wheel Horse was a manufacturer of outdoor and garden power equipment, including lawn and garden tractors. The company's headquarters were in South Bend, Indiana, USA.