Pi for parabolas -- the universal parabolic constant.
23:03
the parabolic trig functions
20:54
The average distance between points on a square
15:29
Parabolic Mirrors - Numberphile
28:33
Terence Tao on how we measure the cosmos | The Distance Ladder Part 1
26:22
Generalizing the right angle.
27:26
This open problem taught me what topology is
31:57
the natural log of imaginary numbers?
1:00:49