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James Gregory blue plaque

St Andrews, Fife, Scotland, United Kingdom

Gregory's Meridian Line. James Gregory (1638-1675) was the first Regius Professor of Mathematics at the University of St Andrews and an early Fellow of the Royal Society. he used the upper hall of this building, known as the King James Library, as his laboratory from 1668-1674. A north-south meridia

n line was laid down in the floor of the library in 1748 (continued here across the pavement). Gregory, along with Newton and Leibniz, was one of the founders of calculus. He wrote the first textbook

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