klein bottle

A Klein bottle can't hold any liquid because it doesn't have an inside. How do you construct this strange thing and why would you want to?

Our image of the week shows one of our favourite topological shapes.

Lucinda Mathews visualises tricky surfaces
Conversations across science and art
Mathematics illustrates the forefront of visualising science
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In the first of a new series 'Imaging Maths', Plus takes an illustrated tour of an extraordinary geometric construction: the Klein bottle.
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