Hermann Helmholtz (1821-1894). German physicist and physiologist. Invented the Opthalmascope in 1851. (19th century).
Science & Nature Medicine
Science & Nature Technology & Innovation
People Famous People
Artistic Representations Portraits
History & Politics Other
People Inventors
Pixel Dimensions (W x H) : 3340x5224File Size : 51,118kb
Downloading Heritage Images copyrighted content is subject to these terms and conditions.