James Watt, Scottish engineer, c 1801.

James Watt, Scottish engineer, c 1801.
4 0 c m
actual image size: 25cm x 32cm


Engraving of the Scottish engineer James Watt (1736-1819). Watt invented the modern steam engine, which became the main source of power in textile mills in Britain during the Industrial Revolution. His engine had a separate condenser through which steam from the cylinder was pased and cooled, allowing the engine to remain hot, thus reducing fuel consumption. The SI (international standard) unit of power, the watt (W), is named after him. Dimensions: 216mm x 140mm.

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© Science Museum / Science & Society Picture Library

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