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James Watt (Steam Engine) - Greatest Inventors of All Time

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James Watt may have been the single most responsible person in bringing about the Industrial Revolution. He made the steam engine dramatically more efficient by introducing a separate condenser that avoided wasting energy, which radically improved the machine’s power output and transformed it into the workhorse of factory production. In 1781, after much financial hardship and struggle, Watt patented a steam engine that produced continuous rotative motion. In a flash, new classes of industry were economically viable, setting off a rapid period of immense economic and social change across world. Watt also developed the concept of horsepower, and invented the document copier, patenting the device in 1780. The principle on which the machine is based remained in use until the arrival of modern photocopiers and the watt unit of power is named after him.
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