Hunkins Experiments
The Secret Life of Machines
An entertaining site that communicates ideas through cartoon drawings. Discover how simple machines and gadgets operate, such as fax machines and washing machines.
Massachusetts Institute of Technology
Mit: Inventor of the Week: Chester Carlson
Massachusetts Institute of Technology provides interesting information on Chester F. Carlson, the inventor of the photocopier. The site provides good background on the history of the photocopier, and a photo of Carlson.