Mental calculators

Willem Klein

Willem Klein (4 December 1912 – 1 August 1986), also known as Wim Klein or under his stage names Pascal and Willy Wortel, was a Dutch mathematician of Jewish ancestry, famous for being able to carry out very complicated calculations in his head very fast. On 27 August 1976, he calculated the 73rd root of a 500-digit number in 2 minutes and 43 seconds. This feat was recorded by the Guinness Book of Records. (Wikipedia).

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Folding the Klein Quartic

https://github.com/timhutton/klein-quartic

From playlist Geometry

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Round Klein Bottle (Large)

This shows a 3d print of a mathematical sculpture I produced using shapeways.com. This model is available at http://shpws.me/3kIo

From playlist 3D printing

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Your Klein Bottle is in the Post - Numberphile

Klein bottle enthusiast Cliff Stoll shows us his unique system for sending bottles to customers. More links & stuff in full description below ↓↓↓ Cliff's online store: https://www.kleinbottle.com More videos on our Klein Bottle playlist: http://bit.ly/KleinBottles Cliff Stoll playlist:

From playlist Klein Bottles on Numberphile

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PSYCHOTHERAPY - Melanie Klein

Melanie Klein was a great psychotherapist who teaches us how to stop either idealising or denigrating others. SUBSCRIBE to our channel for new films every week: http://tinyurl.com/o28mut7 If you like our films take a look at our shop (we ship worldwide): http://www.theschooloflife.com/shop

From playlist PSYCHOTHERAPY

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Photo Montage of Michel van Biezen (by Austin van Biezen)

Visit http://ilectureonline.com for more math and science lectures! This video is a picture montage of a snapshot of Michel van Biezen, produced and edited by Austin van Biezen.

From playlist MICHEL AND FAMILY

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Art Quiz #72 Museum in Amsterdam

Stedelijk Museum in Amsterdam

From playlist Art Quizzes

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Jesper Nederlof: Bipartite TSP in O(1.9999^n) Time, Assuming Quadratic Time Matrix Multiplication

The symmetric traveling salesman problem (TSP) is the problem of nding the shortest Hamiltonian cycle in an edge-weighted undirected graph. In 1962 Bellman, and indep endently Held and Karp, showed that TSP instances with n cities can b e solved in O(n2 ·2n) time. Since then it has been a

From playlist Workshop: Approximation and Relaxation

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Daniel Tataru - Global solutions for geometric wave equations

Princeton University - January 28, 2016 This talk was part of "Analysis, PDE's, and Geometry: A conference in honor of Sergiu Klainerman"

From playlist Anlaysis, PDE's, and Geometry: A conference in honor of Sergiu Klainerman

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The Case for Performance Art | The Art Assignment | PBS Digital Studios

Pre-order our book YOU ARE AN ARTIST (which includes new assignments!) here: http://bit.ly/2kplj2h Dubious of performance art? Break into a cold sweat when you realize it’s about to begin? There’s a reason. Here we present you with a brief history of performance art and attempt to sway y

From playlist The Case For

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Symbolism, Depth, & Romanticism (Isaiah Berlin 1965)

Isaiah Berlin at his very best. This comes from his brilliant series on Romanticism, which you should definitely check out: https://www.youtube.com/playlist?list=PLhP9EhPApKE_9uxkmfSIt2JJK6oKbXmd- Isaiah Berlin Overdose: https://www.youtube.com/playlist?list=PLhP9EhPApKE-z227nn_-_PKw5lGfo

From playlist Social & Political Philosophy

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The Klein Quartic

Made from 24 heptagons. Source code and meshes here: https://github.com/timhutton/klein-quartic

From playlist Geometry

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Queen Juliana's Birthday (1969)

No title. Queen Juliana's 60th birthday - grandson Willem Alexander steals show. Amsterdam, Holland (Netherlands). High angled panning shot crowds filing past Soestdijk Palace. Panning M/S Dutch Royal Family standing on steps of the Soestdijk Palace. C/U Prince Claus Von Amsberg and

From playlist The Dutch Royal Family, 1919-1969 | British Pathé

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Episode 024: Don’t Take a Job at a Lighthouse, You’ll Go Mad! The Lighthouse (2019)

***Originally published on December 14, 2020*** Join Alex in a solo episode as he discusses the psychological concepts in a well-filmed but strikingly strange film The Lighthouse (2019) (https://www.imdb.com/title/tt7984734). It stars Robert Pattinson and Willem Dafoe, ONLY, as we explore

From playlist CinemaPsych Podcast

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Willem de Kooning, Woman, I

Willem de Kooning, Woman, I, 1950-52, oil on canvas, 192.7 x 147.3 cm (The Museum of Modern Art) © The Willem de Kooning Foundation A conversation between Dr. Beth Harris and Dr. Steven Zucker.

From playlist Expressionism to Pop Art | Art History | Khan Academy

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Laws Broken: Avengers - Sokovia Accords Illegal? (One Marvelous Scene x LegalEagle)

In a world filled with superheroes, the most unrealistic thing in the MCU is a legal document. For more “marvelous” legal commentary follow me on twitter: https://twitter.com/LegalEagleDJ More videos on Facebook: https://www.facebook.com/legaleaglereacts If you’re thinking about LAW SCHO

From playlist Laws Broken!

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[Old Version] Dutch Monarchs Family Tree

Buy the poster: https://usefulcharts.com/collections/royal-family-trees/products/copy-of-european-royal-family-tree-west

From playlist Unlisted Videos

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These Aren’t Laws | Bad r/Legaladvice

⭐️ Get my videos early & ad free (plus my exclusives!) only on Nebula. Save $10 per year! https://legaleagle.link/getnebula ⭐️ Cops can’t lie to you? Does that sound right? Are you sure you can’t marry your cousin? Get CuriosityStream AND Nebula for (26% off!) https://curiositystream.com/

From playlist Lawyer Takes on Reddit & Memes

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Not the Klein Quartic

I made this video when I thought I had made a model of the Klein Quartic. But it is wrong, so please ignore it. You can find a corrected version here: https://www.youtube.com/watch?v=ADtwLnxLPTI

From playlist Geometry

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