# 17/11/1790 Famous topologist is born

3:33

2:15

17:37

### Real Möbius strips you can ride on

German mathematician and astronomer August Möbius was born. He made many contributions to mathematics. Most famous of them is the Möbius strip. It is a surface with only one side. It can be made by taking a paper strip, giving it a half twist and joining the ends. You can check that it has only one side with a pencil.