Hermann von Helmholtz Autograph Letter Signed. Thr...Click the image to load the highest resolution version.
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DescriptionHermann von Helmholtz Autograph Letter Signed. Three pages of a bifolium, 3.75" x 6", Berlin; February 4, 1884. In German. Signed, "H. Helmholtz."
Hermann von Helmholtz (1821-1894) was a German physicist, physician and philosopher who contributed to electrodynamics, mathematics, physiology, optics and meteorology. He is best known for his 1847 law of conservation of energy and his 1851 invention of the ophthalmoscope, which allowed physicians to examine the inside of the eye for the first time.
Condition: Smoothed mailing creases.
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