4 0 c m
31cm
actual image size: 23cm x 32cm
Description
Callendar (1863-1930) was profesor of physics at McGill University, Montreal; at University College London; and at the Imperial College of Science. Callendar invented an air thermometer with constant presure which could measure up to 450 degrees Celsius. He also made a platinum resistance thermometer which was extremely accurate.
Image Details
Image Ref.
10300853
© Science Museum / Science & Society Picture Library