James Watt, Scottish engineer, 1815.

James Watt, Scottish engineer, 1815.

Lawrence, Sir Thomas

© Science Museum / Science & Society Picture Library

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Portrait painted of James Watt, (1736-1819) by Sir Thomas Lawrence (1769-1830) in 1815. Scottish engineer and instrument maker who invented the modern steam engine which became the main source of power in the textile mills in Britain. His engine had a separate condenser through which steam from the cylinder was pased and cooled, allowing the engine to be kept hot. This reduced fuel consumption, saving time.
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