Visually, the “Klein bottle” doesn’t seem all that impressive. On first glance it looks like a trendy Japandi-style vase. And yet it has fascinated mathematicians for more than 140 years. To ...

The Klein Bottle is a 4D mathematical oddity. We test a 3D model to see how its non-orientable surface behaves when filled with liquid. Explore topology and why this shape has no 'inside' or 'outside' ...

I show you a trick to fill a klein bottle and talk about why it has no volume Snow and ice warnings in force as tens of ...