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.
Image Details
Image Ref.
10303062
© Science Museum / Science & Society Picture Library