A Twist on the Möbius Band | Science News

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Math Trek

A Twist on the Möbius Band

Researchers work out the shape of a paper strip

3:01pm, July 24, 2007

A Möbius band is a two-dimensional surface with the puzzling property of having only one side. Despite this mind-bending characteristic, it's an easy object to make: just take a long strip of paper, give one end a half-twist, and tape the two ends together. Because of the half-twist, the front side of one end of the strip joins with the reverse side of the other end, so that the taped-together band has only one side.

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