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More than 5000 entries on the history, culture and life of Britain (published in 1993 by Macmillan, now out of print)
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Robert Stirling
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(1790–1878) Scottish inventor and Presbyterian minister, who patented in 1816 an external combustion engine converting heat into mechanical energy through expansion of a gas. In the late 20C his concept is much discussed as a cleaner and quieter alternative to the internal combustion engine.
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