Why slicing a cone gives an ellipse (beautiful proof)
29:42
Why 4d geometry makes me sad
33:37
Something Strange Happens When You Trust Quantum Mechanics
16:58
All possible pythagorean triples, visualized
21:05
Why is there no equation for the perimeter of an ellipse‽
19:37
Why this puzzle is impossible
27:07
Thinking outside the 10-dimensional box
1:13:50
The Continuity of Splines
27:26