= Hermann von Helmholtz
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Physicist and physiologist whose 1847 synthesis connected mechanical and other natural processes through a conservation principle.
\Image[https://upload.wikimedia.org/wikipedia/commons/b/b4/Helmholtz_1876.jpg]
{title=Portrait of <Hermann von Helmholtz>}
{description=Portrait by Franz von Lenbach; reproduced in Leo Königsberger, Hermann von Helmholtz (1906). Public domain (artist died 1904; reproduction published 1906); Commons PD-old/PDM. Source and usage information on the linked Wikimedia file page.}
{source=https://commons.wikimedia.org/wiki/File:Helmholtz_1876.jpg}
{width=260}
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