PickVidsBest Recreational & visual math Videos
「Recreational & visual math」下面有141部被不同的人、在不同月份推荐过的视频。挑的时候先看对象：入门35部，适合还没学过的人；进阶22部，适合已经懂术语的人；普通向84部，按兴趣就能看；更硬的0部，留给想看推导或细节的人。这一类数量最多的是讲解，所以它们的共同点是用一个图像或类比把一个概念补上。常出现的频道包括3Blue1Brown、Numberphile、Stand-up Maths。目录给这个主题划的范围是：Math explainers and recreation: 3Blue1Brown, Numberphile, Mathologer, puzzles, fractals, surreal numbers, math history, mathematicians, beautiful proofs, math in everyday life.如果只看三部，就从《Vectors | Chapter 1, Essence of linear algebra》开始，它负责把问题讲出画面；然后看《But what is the Fourier Transform? A visual introduction.》，换一种讲法或例子；最后看《But what is a neural network? | Deep learning chapter 1》，留给已经有基础的人。页面按每页24部切开，顺序看的是被推荐跨越了多少个月，不是播放量。每条标题下面那一句是这部片子自己的内容说明，用来区分它在讲定义、过程、演示还是观点。点进去能看到推荐原话、原文链接和适合谁看。看的时候把强烈推荐当成有人明确叫你去看，把引用当成只是拿来举例，把批评留下来对照，不要把每条评论都当成同一力度。
How big is a billion? - Numberphile
Numberphile explains the long and short scales for naming large numbers, covering millions, billions, trillions, milliards and the Greek myriad, with James Grime and Tony Padilla.
Does John Conway hate his Game of Life?
John Conway talks in a short Numberphile interview about his mixed feelings toward the Game of Life, his most famous invention.
The Strange Math That Predicts (Almost) Anything
A Veritasium video on how a feud between Russian mathematicians led to Markov chains and the modern prediction algorithms built on them.
Why the World’s Best Mathematicians Are Hoarding Chalk
A short Great Big Story piece about Hagoromo, a Japanese chalk brand so prized that mathematicians stockpiled it, with some reportedly dealing it on the side.
What is PLUS times PLUS?
2swap explores lambda calculus using John Tromp's lambda diagrams, with animated beta-reductions, asking what PLUS times PLUS gives.
Base 12 - Numberphile
Numberphile's James Grime makes the case for base 12 (dozenal) over base 10, showing how twelve's many divisors make arithmetic and everyday fractions easier.
Someone improved my code by 40,832,277,770%
Matt Parker follows the community effort to speed up his slow Wordle-solving code, which ended up running hundreds of millions of times faster.
Calculating a Car Crash - Numberphile
Numberphile's Ben Sparks works through the physics of a car crash, showing how kinetic energy grows with the square of speed and why stopping distance climbs so quickly as velocity increases.
BBC - The Code - The Wisdom of the Crowd
Marcus du Sautoy of the BBC demonstrates the wisdom of the crowd, showing that averaging many guesses of jelly beans in a jar lands near the true count.
Bertrand's Paradox (with 3blue1brown) - Numberphile
Numberphile interviews Grant Sanderson of 3blue1brown about Bertrand's paradox, where different reasonable ways of picking a random chord of a circle give different probabilities.
Why do YouTube views freeze at 301?
Numberphile visits YouTube to learn why view counts on new videos used to freeze at 301.
Epicycles, complex Fourier series and Homer Simpson's orbit
Mathologer explains epicycles and complex Fourier series, inspired by an animation of Homer Simpson drawn with epicycles.
Matematikrevyen 2011: Banach-Tarski
A Danish university math revue music video that parodies Barbra Streisand to explain the Banach-Tarski paradox, with oranges multiplying on stage.
I built a QR code with my bare hands to see how it works
Veritasium builds a QR code by hand to explain how it works.
The Uncracked Problem with 33 - Numberphile
Numberphile with Tim Browning on the sum-of-three-cubes problem and why 33 was the lowest unsolved case.
How to walk through walls using the 4th Dimension [Miegakure: a 4D game]
A short explainer showing what walking through walls would look like with movement in a fourth spatial dimension, using the 4D puzzle game Miegakure.
epic conway's game of life
An animated, musical visualization of Conway's Game of Life showing patterns made in the Golly program.
Will We Ever Run Out of New Music?
Vsauce asks whether music will ever run out of new melodies.
Double Pendulums are Chaoticn't
A short explainer from 2swap on the chaotic behavior of double pendulums.
Flipping 10 heads in a row: Full video
Mathematician singingbanana shows how he flipped ten heads in a row, with the full uncut video and answers to viewers' questions.
Outside In
A 21-minute animation showing how a sphere can be turned inside out without creases or tears, known as sphere eversion.