Hermann von Helmholtz (1821-1894), German physicist and physiologist, 1876. Artist: Unknown

Hermann von Helmholtz (1821-1894), German physicist and physiologist, 1876. Artist: Unknown

1-158-017 - Oxford Science Archive/Heritage Images

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Hermann Helmholtz (1821-1894), German physicist and physiologist. Inventor of the Opthalmascope in 1851, (1876).

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