Physics 001 Notes p14: More 2D Vector Addition

13:03
Physics 001 Notes p15: Adding Displacement Vectors

34:36
Olympiad level counting (Generating functions)

26:12
Vector Formulas - Physics

27:26
This open problem taught me what topology is

25:47
Harvard Professor Explains Algorithms in 5 Levels of Difficulty | WIRED

29:24
But why would light "slow down"? | Visualizing Feynman's lecture on the refractive index

26:38
The Wallis product for pi, proved geometrically

32:26