James Gregory, Scottish mathematician, c 1670.
4 0 c m
 
30cm
actual image size: 22cm x 32cm

James Gregory, Scottish mathematician, c 1670.

Harding, Edward

© Science Museum / Science & Society Picture Library

Description

Engraving by Edward Harding after an earlier drawing by David Steuart Erskine. Gregory (1638-1675) invented the Gregorian reflecting telescope in 1661. The following year he published 'Optica promota' (The Advance of Optics), containing a description of his telescope. Gregory was profesor of mathematics at St Andrew's University and then at Edinburgh. Papers found after his death showed that he had anticipated the Taylor expansion and several other discoveries in number theory. Published in 1798. Dimensions: 370mm x 630mm.
 

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Image Ref.

10198841
 

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