http://www.sciencemuseum.org.uk/images/I065/10328078.aspx
"A single surface model made by Alan Bennett in Bedford, United Kingdom.
It consists of three Klein bottles set inside each other to produce,
when cut, three pairs of single-twist Mobius strips. A Klein bottle has
no edges, no outside or inside and cannot be properly constructed in
three dimensions."
http://www.kleinbottle.com/
"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 splendid gifts, outstanding classroom
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."
http://www.kleinbottle.com/Tantalus.html
"Thirsty?
Then you don't want Acme's Cup of Tantalus...
These are self-siphoning cups that can't be filled."
http://www.kleinbottle.com/klein_bottle_hats.htm
"Pop an Acme Klein Bottle on your head!
It's ideal for skiing, sleigh-rides, snowball fights, midwinter
colloquia, Antarctic beach parties, and alpine chess tournaments. A
perfect gift for anyone with a zero-volume head. An important accessory
to the one-sided mind. An essential headwarmer for your non-orientable
friends who are temporarily immersed in our 3-dimensions."
(Also available with Moebius Loop Scarves!)
Share and enjoy,
*** Xanni ***
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