26:11

Où est le bas ?

26:31

How Much of the Earth Can You See at Once?

31:33

The Oldest Unsolved Problem in Math

28:18

Laser vs Éclair - Quel est le plus puissant ?

24:14

The Banach–Tarski Paradox

23:51

Why is this number everywhere?

19:31

Math Magic

31:08

Illusions of Time