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Cool Mathematics Web Sites - Education 304 - Dr. Lillie Albert - Fall 2009


 




 

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Torus Triptych

In this movie, the torus is twisted at a very special angle. Here, the initial circle folds over so that it touches itself at a point. At the same time, its middle squeezes together to touch itself at a second point. Both these touchings occur at the same instant, and at that moment, the slice is formed by two perfect circles. If you have the ability to step through the movie, you might want to do so to see this slice more clearly. 

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