Keynote Software Incorporated
Johns Hopkins Medical
Google - Research database allows searching of the scholarly literature.
California Energy Commission - In-depth site on energy and its discovery.
T. Henderson, Glenbrook South H.S. - Extensive lessons on energy and work, including mathematical relationships.
L. R. Radovic, Penn State U. - Extensive online course on energy and the environment, including textbook chapters.
An alphabetical glossary of relevant scientific terms.
MAST Teacher's Workshop, U. Illinois - Lab experiment comparing energy given off by combustion reactions.
Science Museum, U.K. - photograph of Joule's apparatus.
Museum of Science & Industry, Manchester - Movie and Interactive experiment re-creates Joule's original work.