How To Use Hermann von helmholtz In A Sentence

• German physician Hermann von Helmholtz, who devoted much of his career to studying the eye and the physics of vision and perception, demonstrates his ophthalmoscope to the Berlin Physical Society.
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• Image: Hulton-Deutsch Collection / Corbis 1850: German physician Hermann von Helmholtz, who devoted much of his career to studying the eye and the physics of vision and perception, demonstrates his ophthalmoscope to the Berlin Physical Society. Dec. 6, 1850: The Eyes Have It, Thanks to the Ophthalmoscope
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