Science & technology

Death of James Watt

25 August 1819

James Watt died on 25 August 1819 in Heathfield Hall, aged 83. A Scottish instrument maker and engineer, Watt made the steam engine efficient enough to power industry. While repairing a model of a Newcomen engine at the University of Glasgow, he saw how much heat was wasted and devised a separate condenser, patented in 1769. Partnering with the Birmingham manufacturer Matthew Boulton, he went on to develop engines that could turn a rotating shaft, allowing them to drive mills, factories and later transport. He also invented a copying press and popularized the term horsepower. The unit of power, the watt, is named in his honour.

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This moment belongs to the Industrial era (1760 CE to 1914 CE), steam, factories and revolutions. You can also browse everything in the 19th century.