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John Playfair

mathematician

John Playfair

Scottish scientist and mathematician (1748-1819)

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About John Playfair

John Playfair FRSE, FRS was a Church of Scotland minister, remembered as a scientist and mathematician, and a professor of natural philosophy at the University of Edinburgh. He is best known for his book Illustrations of the Huttonian Theory of the Earth (1802), which summarised the work of James Hutton. It was through this book that Hutton's principle of uniformitarianism, later taken up by Charles Lyell, first reached a wide audience. Playfair's textbook Elements of Geometry made a brief expression of Euclid's parallel postulate known now as Playfair's axiom.

Facts from Wikidata (CC0). Image by Sir Henry Raeburn (died 1823) via Wikimedia Commons (Public domain).

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Occupation: mathematician, geologist, physicist, naturalist
Position held: professor, parson
Citizenship: United Kingdom of Great Britain and Ireland
Born: March 10, 1748
Died: July 20, 1819

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Illustrations of the Huttonian Theory of the Earth XIII. Remarks on the Astronomy of the Brahmins Playfair's axiom University of Edinburgh Adam Ferguson professor parson University of St Andrews St Mary's College, St Andrews Royal Society of London

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