waterpower

wa·ter·pow·er (wôʹtər-pou'ər, wŏtʹər-) n.

1.

a. The energy produced by running or falling water that is used for driving machinery, especially for generating electricity.

b. A source of such energy, as a waterfall.

2. A water right owned by a mill.

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Power produced by a stream of water as it turns a wheel or similar device.

The waterwheel, probably invented in the 1st century BC, was widely used throughout the Middle Ages and into modern times for grinding grain, operating bellows for furnaces, and other purposes. The more compact water turbine, which passes water through a series of fixed and rotating blades, was introduced in 1827. Water turbines, used originally for direct mechanical drive for irrigation, now are used almost exclusively to generate hydroelectric power.

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      power produced by a stream of water as it turns a wheel or similar device. The waterwheel was probably invented in the 1st century BC, and it was widely used throughout the Middle Ages and into modern times for grinding grain, operating bellows for furnaces, and other purposes. The more compact water turbine, which passes water through a series of fixed and rotating blades, was introduced in 1827 by Benoît Fourneyron (Fourneyron, Benoît), a French experimenter, whose first turbine developed about six horsepower. By 1832 he had perfected a turbine capable of developing 50 horsepower. Various modifications followed Fourneyron's design, notably those of James Thomson (about 1851) and James B. Francis (Francis, James Bicheno) (1855), using radial flow inward. Water turbines, used originally for direct mechanical drive for irrigation, now are used almost exclusively to generate electric power. See also hydroelectric power.

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