Henry Perigal, English mathematician, 1897.

Henry Perigal, English mathematician, 1897.
3 1 c m
40cm
actual image size: 32cm x 23cm

Description

Henry Perigal (1801-1898) photographed at the age of 96 on 4 April, 1897. Perigal was the maker of an ellipsograph (elliptic compas) and provided proof of the Pythagorean theorem in the 1830s.

© Science Museum / Science & Society Picture Library

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