The Tuning Fork Mystery: unexpected vibrations
7:38
The Tuning Fork Mystery: an unexpected update
10:06
Matt & Hugh: the mystery of two balls in a can
18:03
Un extraño metal que también es vidrio es increíblemente elástico
13:04
How thick is a three-sided coin?
7:36
Unexpected Shapes (Part 1) - Numberphile
5:16
Top 10 Demonstrations With Tuning Forks | Arbor Scientific
16:19
Will a falling pencil hit the table? We do the maths!
17:09