playtoob
50 Videos
1:10 100 random chords, how many intersections?
376,367 views · Jun 16, 2026
2:25 Measuring the entropy of English
297,102 views · Jun 12, 2026
1:02 What's the perfect encoding? How do you know?
212,982 views · Jun 10, 2026
32:20 Reinventing Entropy | Compression is Intelligence Part 1
950,685 views · Jun 7, 2026
1:22 Tie random ends: How many loops?
495,664 views · May 21, 2026
0:39 Covering 10 points, a surprisingly tricky puzzle.
791,203 views · Apr 16, 2026
1:43 Escher's most mind-bending piece
338,641 views · Mar 27, 2026
0:49 The subset sum puzzle
416,220 views · Mar 25, 2026
44:52 How (and why) to take a logarithm of an image
1,872,927 views · Mar 22, 2026
3:00 Bacteria Grid Puzzle Solution
1,159,000 views · Mar 21, 2026
1:00:24 The most beautiful formula not enough people understand
1,207,291 views · Feb 27, 2026
1:02 The lattice bacteria puzzle
828,830 views · Feb 18, 2026
2:34 Solution to the ladybug clock puzzle
1,045,848 views · Feb 16, 2026
29:40 The Hairy Ball Theorem
2,819,354 views · Jan 31, 2026
1:01 The ladybug clock puzzle
748,399 views · Jan 16, 2026
23:05 Why Laplace transforms are so useful
751,542 views · Nov 5, 2025
1:46 The dynamics of e^(πi)
1,312,483 views · Oct 12, 2025
34:41 But what is a Laplace Transform?
1,704,087 views · Oct 12, 2025
27:49 The Physics of Euler's Formula | Laplace Transform Prelude
1,049,921 views · Oct 5, 2025
33:29 What was Euclid really doing? | Guest video by Ben Syversen
754,904 views · Sep 18, 2025
1:12 Incomplete open cubes
246,188 views · Sep 7, 2025
52:12 Exploration & Epiphany | Guest video by Paul Dancstep
502,075 views · Sep 7, 2025
41:03 Simulating and understanding phase change | Guest video by Vilas Winstein
451,437 views · Aug 28, 2025
1:43 How AI connects text and images
117,359 views · Aug 21, 2025
13:31 The AI that solved IMO Geometry Problems | Guest video by @Aleph0
401,107 views · Aug 17, 2025
37:20 But how do AI images and videos actually work? | Guest video by Welch Labs
1,912,653 views · Jul 25, 2025
16:23 Where my explanation of Grover’s algorithm failed
652,081 views · May 4, 2025
36:54 But what is quantum computing? (Grover's Algorithm)
3,624,044 views · Apr 30, 2025
1:41 Testing your intuition for quantum computing
1,417,456 views · Apr 30, 2025
1:03 How to measure nearby galaxies
185,526 views · Apr 20, 2025
2:21 Measuring the distance to Venus without radar
416,913 views · Apr 8, 2025
1:45 Measuring the speed of light using Jupiter's moons
2,312,030 views · Apr 7, 2025
0:56 The tragic tale of Guillaume Le Gentil
293,735 views · Mar 27, 2025
1:38 Zooming out by powers of 10
2,681,115 views · Mar 26, 2025
26:07 Why colliding blocks compute pi
6,029,710 views · Mar 13, 2025
1:01 When being beautifully wrong leads to discovery
2,379,387 views · Feb 28, 2025
1:46 Why the ancient Greeks rejected heliocentrism
1,319,867 views · Feb 27, 2025
1:32 How to estimate the distance to the sun
1,400,933 views · Feb 26, 2025
0:53 How Aristarchus deduced the distance to the moon
138,232 views · Feb 25, 2025
25:35 Terence Tao continuing history’s cleverest cosmological measurements
1,529,341 views · Feb 23, 2025
2:07 How Earth's size was computed by Eratosthenes
284,137 views · Feb 12, 2025
28:33 Terence Tao on the cosmic distance ladder
5,442,627 views · Feb 8, 2025
1:22 Measuring the earth with Terence Tao
734,283 views · Feb 8, 2025
2:03 The topology of two-note chords
1,409,238 views · Jan 30, 2025
3:00 The barber pole optical mystery
898,393 views · Jan 6, 2025
0:59 Monge's Theorem
2,387,044 views · Dec 29, 2024
1:49 Thinking through double slits
604,716 views · Dec 26, 2024
0:58 The inscribed square problem
4,428,686 views · Dec 24, 2024
27:26 This open problem taught me what topology is
2,371,559 views · Dec 24, 2024
1:45