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= Ludvig Colding
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Danish engineer who investigated conservation and the relation between mechanical work and <heat> during the nineteenth century.

\Image[https://upload.wikimedia.org/wikipedia/commons/6/6a/Ludvig_August_Colding_2.jpg]
{title=Portrait of <Ludwig A. Colding>}
{description=Georg Holtzweissig; Royal Library, Copenhagen, Denmark. Public domain (Commons PD-Denmark50, life+70 and pre-1931 U.S. publication tags). Source and usage information on the linked Wikimedia file page.}
{source=https://commons.wikimedia.org/wiki/File:Ludvig_August_Colding_2.jpg}
{width=250}


 Ludwig A. Colding (source code)