Crank Dot Net

The esteemed Crank o' the Day for 2012 Feb 03:

Acme Klein Bottles 2000 Jan 10
... mathematics ...: "Need a zero-volume bottle? Searching for a one-sided surface? Want the ultiamte in non-orientability? Get an Acme Klein bottle! At last, Acme has conquered topological and engineering frontiers to manufacture genuine glass Klein Bottles. These are the finest closed, non-orientable, boundary-free manifolds sold anywhere in our three spatial dimensions. These elegant bottles make great gifts, fantastic displays, and inferior mouse-traps. With its circle of singularities, an Acme Klein Bottle can be said to exist inside of itself -- especially handy during time-reversals."

*The Alcyone Systems Web Ring* (13 sites) >>>	Erik Max Francis The homepage of Erik Max Francis. Hard Science Hard science, the easy way.
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