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James Gregory: Quick Facts

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Facts

Also Known As James Gregorie
Born November 1638 • Scotland
Died October 1675 (aged 36) • Edinburgh • Scotland
Subjects Of Study area • convergence • curve • divergence • fundamental theorem of calculus • infinite series • photometry • reflection • refraction • squaring the circle • telescope • trigonometry

Photos

James Gregory.
Diagram of a Gregorian telescope showing light entering the tube, reflecting off a primary parabolic mirror, then a secondary concave mirror, and focusing at the eyepiece.
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How did Ptolemy explain retrograde motion?
Ptolemy
Egyptian astronomer, mathematician, and geographer
Isaac Newton
Isaac Newton
English physicist and mathematician
Galileo
Galileo
Italian natural philosopher, astronomer, and mathematician
Engraving of six astronomers, with Hipparchus seated at center and, from left to right, Galileo, Johannes Hevelius, Tycho Brahe, Nicolaus Copernicus, and Ptolemy standing, each holding scientific instruments.
Hipparchus
Greek astronomer
Fermat, portrait by Roland Lefèvre; in the Narbonne City Museums, France
Pierre de Fermat
French mathematician
Engraved portrait of Swiss mathematician and physicist Leonhard Euler in profile, wearing a dark coat and ruffled white shirt, from the 1740s.
Leonhard Euler
Swiss mathematician
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Eudoxus of Cnidus
Greek mathematician and astronomer
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Ibn al-Haytham
Arab astronomer and mathematician
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Regiomontanus
German mathematician
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Heron of Alexandria
Greek mathematician
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Minggantu
Chinese astronomer and mathematician
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Abū al-Wafāʾ
Persian mathematician
Boscovich, detail of a portrait by an unknown artist; in Dubrovnik Cloister, Croatia
Ruggero Giuseppe Boscovich
Italian astronomer and mathematician
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Gilles Personne de Roberval
French mathematician
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Willebrord Snell
Dutch astronomer and mathematician
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James Stirling
British mathematician
Colin Maclaurin, engraving by S. Freeman; in the British Museum.
Colin Maclaurin
Scottish mathematician
Playfair, John
John Playfair
Scottish geologist and mathematician
French philosopher Blaise Pascal
Blaise Pascal
French philosopher and scientist
Giordano Bruno
Giordano Bruno
Italian philosopher

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