A Klein bottle is a surface with a very strange property. A surface is any object that is locally 2-dimensional;...

Continue reading...# universe

## Projective Planes

Most of you know how to make a Mobius band—take a strip of paper and glue the ends with a...

Continue reading...## Spherical Geometry

Remember high school geometry? The sum of the angles of a planar triangle is always 180 degrees or Pi radians. However, triangles...

Continue reading...## Making History by Card Shuffling

Did you know that whenever you shuffle a deck of cards, it is quite likely that you are making history?...

Continue reading...