Joule's Experiment Small 320×241 Medium 640×482 Large 1024×772 Download Tiff Original 2400×1809 | (429.7 KB) Description "Joule's experiment on the mechanical equivalent of heat, in which he caused paddlewheels to rotate in a vessel of water by means of falling weights W." -Hawkins, 1917 Keywords experiment, heat, joule Galleries Chemistry Concepts and Lab Experiments Source: Hawkins and Staff Hawkins Electrical Guide Number One (New York: Theo. Audel and Company, 1917) 90