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Donald E. Simanek
Donald Simanek is emeritus professor of physics at Lock Haven University of Pennsylvania. Visit his pages of science, pseudoscience, and humor: www.lhup.edu/~dsimanek/
Latest from Donald E. Simanek
11/20/2007
This beautiful puzzle was shown to me by Mary Nienhuis, a retired high school mathematics teacher.
08/22/2007
Friction. There's the rub.
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