3 1 c m
40cm
actual image size: 32cm x 23cm
Description
Herschel's prismatic apparatus for photographic researches on the solar spectrum. (The museum received this from Prof .A.P. Herschel. By letter of 1891 it was decided to be the property of Sir W J Herschel).
Image Details
Image Ref.
10287821
© Science Museum / Science & Society Picture Library