Description: Employed in 1849 by Joule in his determination of the “Mechnical Equivalent of Heat,” when he obtained the first reliable value of the equivalent relation between energy and heat. Photographs: Concerning History of Science
Collection: Photograph Collection
Series/File: History of Science
Caltech Archives ID: 50.11.1-9
Copyright: The Caltech Archives has not determined the copyright status of this image.