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  • 15:21 Why pi^pi^pi^pi could be an integer (for all we know!).

    Why pi^pi^pi^pi could be an integer (for all we know!).

    381 views / 0 likes - added

    Check out the Jane Street programs if you're considering a mathematics/finance/programming job: https://www.janestreet.com/join-jane-street/our-programs/ Here is Tim Gowers's reply to the original tweet: https://twitter.com/wtgowers/status/134621215158170

  • 10:36 How to keep an open secret with mathematics.

    How to keep an open secret with mathematics.

    435 views / 0 likes - added

    This video is sponsored by ExpressVPN. Go to https://expressvpn.com/standupmaths and find out how you can get 3 months free.Shamir's Secret Sharing on wikipedia.https://en.wikipedia.org/wiki/Shamir%27s_Secret_SharingI made the animated parabola in GeoGebr

  • 21:55 Synchronising Metronomes in a Spreadsheet

    Synchronising Metronomes in a Spreadsheet

    431 views / 1 likes - added

    The Ri Lectures are on BBC4 and iPlayer now:https://www.bbc.co.uk/programmes/b00pmbqqThey'll be on the Ri channel a month later:https://www.youtube.com/user/TheRoyalInstitutionThanks to Jane Street, pateron supports and all viewers! Here's to another year

  • 07:35 Calculator Number Trick: rectangle patterns

    Calculator Number Trick: rectangle patterns

    440 views / 0 likes - added

    Here is the original Fermat's Library tweet.https://twitter.com/fermatslibrary/status/1052544515632959488If you want 100% renewable energy: check out Bulb!https://bulb.co.uk/refer/mattp5449We make Think Maths teaching resources to go with Stand-up Maths v

  • 14:53 How thick is a three-sided coin?

    How thick is a three-sided coin?

    673 views / 0 likes - added

    Go check out the puzzles over on Brilliant! https://brilliant.org/standupmaths Use the URL above to help support this video and get 20% off the paid premium versions. Once you’ve done that: help us calculate the thickness of a three-sided coin! The bonus

  • 16:55 Popular Calculating π by hand: the Chudnovsky algorithm

    Calculating π by hand: the Chudnovsky algorithm

    934 views / 0 likes - added

    For Pi Day 2018 I calculated π by hand using the Chudnovsky algorithm. https://en.wikipedia.org/wiki/Chudnovsky_algorithm k = 0 42698672/13591409 = 3.141592|751... k = 0 and k = 1 42698670.666333435968/13591408.9999997446 = 3.14159265358979|619... Watch m

  • 14:53 THE SCUTOID: did scientists discover a new shape?

    THE SCUTOID: did scientists discover a new shape?

    539 views / 0 likes - added

    Read the Nature paper for yourself: "Scutoids are a geometrical solution to three-dimensional packing of epithelia" https://www.nature.com/articles/s41467-018-05376-1 Thanks to Laura and Clara for helping me with the video! You can download Laura's model

  • 12:17 Popular How to detect bank fraud with maths

    How to detect bank fraud with maths

    779 views / 0 likes - added

    I chat to Daniel from the financial crime and security team at Monzo to talk about how they used maths to detect a data breach at Ticketmaster which exposed people to bank fraud. Here is their post about what happened: https://monzo.com/blog/2018/06/28/ti

  • 03:22 The Rug Puzzle: how many triangles?

    The Rug Puzzle: how many triangles?

    526 views / 0 likes - added

    This video sponsored by ME. I mean: MATHS GEAR. Buy my book. https://mathsgear.co.uk/collections/books/products/signed-paperback-things-to-make-and-do-in-the-fourth-dimension My original tweet that started the puzzle! https://twitter.com/standupmaths/stat

  • 06:01 How many different World Cup results can a team have?

    How many different World Cup results can a team have?

    561 views / 0 likes - added

    Register your pet at Psychic Pets and start predicting the World Cup games! http://psychic-pets.com/ You can also donate money to help keep the Psychic Pet servers running! Via PayPal: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=M

  • 10:22 Popular Why do whole oranges float, but peeled oranges sink?

    Why do whole oranges float, but peeled oranges sink?

    983 views / 1 likes - added

    Go check out the courses on Brilliant! https://brilliant.org/standupmaths Be one of the first n people (for n = 200) to sign-up for a free Brilliant account and get 20% off if you upgrade to paid membership. Here is the original QI tweet: "A whole orange

  • 06:59 Can animals predict the future? Meet Barry the Psychic Labrador!

    Can animals predict the future? Meet Barry the Psychic Labrador!

    505 views / 0 likes - added

    Barry the Psychic Labrador has predicted an England win: https://psychic-pets.com/pets/232 Lilo the Psychic Basset Hound has predicted a Sweden win: https://psychic-pets.com/pets/1246 This video was uploaded before the World Cup quarter-final: England vs

  • 16:28 Inside an Antimatter Factory

    Inside an Antimatter Factory

    550 views / 0 likes - added

    Check out Lucie’s tour of CERN on the Cosmic Shambles channel: https://www.youtube.com/watch?v=MqMT2c35Wrg If you are a physics kind of person and want to work or do a placement at CERN, go to: http://cern.ch/jobs If you ask nicely anyone can visit CERN.

  • 05:40 How to find a square root

    How to find a square root

    497 views / 0 likes - added

    Here is the original π video: https://www.youtube.com/watch?v=LhlqCJjbEa0 Watch the long version of the extra working out here: https://www.youtube.com/watch?v=I7YvD7dqsy8 My calculation gave the square root of 10,005 to be 100.02499687578103 Compared to

  • 19:41 The Actual Mathematics of Popping Champagne Corks

    The Actual Mathematics of Popping Champagne Corks

    543 views / 0 likes - added

    Thanks to Helen Czerski for making the video with me! https://www.helenczerski.net/ Helen is physicist, oceanographer and broadcaster in the Department of Mechanical Engineering at University College London. You should check out her book Storm in a Teacup

  • 13:59 MENACE: the pile of matchboxes which can learn

    MENACE: the pile of matchboxes which can learn

    488 views / 0 likes - added

    See more data and check out what we changed on the second day (which caused MENACE to learn a different strategy) in the second video: https://youtu.be/KcmjOtkULi4 Check out Matt Scroggs’s original blog post about MENACE and in the amazing Chalkiest magaz

  • 10:06 Matt & Hugh: the mystery of two balls in a can

    Matt & Hugh: the mystery of two balls in a can

    570 views / 0 likes - added

    Dr Hugh Hunt is a Senior Lecturer in Engineering at the University of Cambridge and a Fellow of Trinity College. http://www.hughhunt.co.uk/ Watch Hugh and I calculate how fast a motorbike can go on a wall of death. https://youtu.be/b23i3NhFLDc CORRECTIONS

  • 05:51 Postcards from backstage: Rob and the Anti-Monty-Hall Problem

    Postcards from backstage: Rob and the Anti-Monty-Hall Problem

    528 views / 0 likes - added

    Katie’s postcard is here: https://youtu.be/dFvzUNMU1Lo Hugh’s postcard over here: https://youtu.be/b23i3NhFLDc More about Maths Inspiration shows for sixth formers: http://www.mathsinspiration.com/ We have 2017 shows in Manchester, Winchester, London, Bir

  • 15:25 The Coriolis Effect Test: two hemispheres, one sink

    The Coriolis Effect Test: two hemispheres, one sink

    577 views / 0 likes - added

    The Coriolis Effect Test: two hemispheres, one sink Disproven! The Coriolis Effect does not make the water drain out a sink anti-clockwise in the Northern Hemisphere and clockwise in the Southern. Have you taken the same sink to both hemispheres? If so: s

  • 07:07 Popular How fast is a Fidget Spinner?

    How fast is a Fidget Spinner?

    925 views / 0 likes - added

    Use some mathematics to work out how fast a Fidget Spinner spins. In fidgets/second. Maths and science teachers: please do torment your students with this experiment. All they need is a Fidget Spinner and a phone; the two things they refuse to be without.

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  • 22:41 Calculating the optimal sphere packing density: with oranges

    Calculating the optimal sphere packing density: with oranges

    687 views / 0 likes - added

    Check out the corresponding video I made with Steve Mould for his channel. https://youtu.be/O3RsDIWB7s0 Thomas Hales’s proof of the Kepler Conjecture. http://annals.math.princeton.edu/wp-content/uploads/annals-v162-n3-p01.pdf The Kepler Conjecture on wiki

  • 10:24 Alphamagic vs Letterwise Magic Squares

    Alphamagic vs Letterwise Magic Squares

    534 views / 0 likes - added

    Behold! Another slightly disappointing magic square. Free tickets for my patreon supporters! https://www.patreon.com/posts/free-tickets-to-9603456 Pre-Order the DVD/download: https://shop.festivalofthespokennerd.com/collections/frontpage/products/58b6b63a

  • 06:11 The Brick Balancing Challenge

    The Brick Balancing Challenge

    501 views / 0 likes - added

    How far can you make a tower lean? Bricks optional. Lower-mass cuboids should work just as well. Previous brick video: The Brick Double-Domino Effect Explained https://www.youtube.com/watch?v=EYkBctqyKic Try to keep the comments spoiler free! But I do not

  • 17:20 The Numbers in Dice Stacking and Balancing

    The Numbers in Dice Stacking and Balancing

    505 views / 1 likes - added

    Behold the 120-sided dice, the d120: http://thedicelab.com/d120.html Of course, the d120 is available on Maths Gear! https://mathsgear.co.uk/products/d120-dice Here is the numerically balanced d20 as well. https://mathsgear.co.uk/products/numerically-bala

  • 24:07 How to mathematically calculate a fall through the Earth

    How to mathematically calculate a fall through the Earth

    603 views / 0 likes - added

    Huge thanks to the Great Courses Plus for sponsoring this video. Click here to check out the free trial: http://ow.ly/gSm4302OFJw Watch the full integration! Worth it even just for the Simple Harmonic Motion which drops out at the end. https://www.youtube

  • 10:03 Four has Four Letters

    Four has Four Letters

    453 views / 0 likes - added

    Four is the only number in the English language which as as many letters as its value. Leave your findings below and please do comment (constructively!) on the findings of others. Here is the python code I used to track which binary sequences ended in 13

  • 14:27 Why is TV 29.97 frames per second?

    Why is TV 29.97 frames per second?

    649 views / 0 likes - added

    I look at the historical quirks which gave us TV at 29.97 frames per second. In North America at least. It's a comfortable 25 fps in Europe. More on that thing I mentioned at the end of the video here: https://www.patreon.com/standupmaths Here is the sphe

  • 18:19 Popular How to make an edge-coloured origami dodecahedron

    How to make an edge-coloured origami dodecahedron

    1,144 views / 0 likes - added

    Check out Skillshare: http://skl.sh/standupmaths Using the code STANDUPMATHS you can get two months of the premium version for free (which is normally from $8 USD per month). Go straight to the origami star lesson: http://skl.sh/origami-class Download my

  • 14:26 Popular New Rubik's Cube World Record! 4.74 seconds (interview and breakdown)

    New Rubik's Cube World Record! 4.74 seconds (interview and breakdown)

    743 views / 1 likes - added

    New Rubik’s Cube World Record! 4.74 seconds. I have a chat with Mats Valk about his record-breaking solve. Plus a break-down of how he actually did it. UPDATE: The Valk 3 cube is back in stock on Maths Gear after the original stock sold-out within an hour

  • 18:40 The Mathematics of Winning Monopoly

    The Mathematics of Winning Monopoly

    607 views / 0 likes - added

    I talk to Hannah Fry and compare our mathematical investigations into playing Monopoly. I’ve put all my probabilities below. You can buy a signed copy of Hannah's book on Maths Gear: https://mathsgear.co.uk/collections/books/products/signed-copy-of-the-in

  • 14:01 Popular How to build a Hexastix in 72 easy steps

    How to build a Hexastix in 72 easy steps

    1,002 views / 0 likes - added

    I was bored in a hotel room, so I went and bought 72 pencils. You can buy the same pencils on Amazon here: https://www.amazon.com/Staples-Yellow-Pencils-Dozen/dp/B00BQ3ALD6?_encoding=UTF8&tag=stanupmath-20 Download the Stand-up Maths theme! https://standu

  • 04:00 Popular The Brick Double-Domino Effect Explained

    The Brick Double-Domino Effect Explained

    711 views / 0 likes - added

    If you use bricks as dominoes: you get a second wave going in the opposite direction. Watch the original brick domino video here: https://www.youtube.com/watch?v=-BTWiZ7CYoI I think that is the original upload. If anyone finds a better one, please do let

  • 24:00 Popular Generating π from 1,000 random numbers

    Generating π from 1,000 random numbers

    831 views / 0 likes - added

    Watch me calculate pi by rolling 1,000 random numbers on two d120 dice. All in the name of celebrating Pi Day 2017. You can watch all 500 rolls of the dice! https://www.youtube.com/watch?v=ESU4KdRLzu0 Here are some proofs that the probability of two rando

  • 17:38 Recreating Asteroids with Lasers

    Recreating Asteroids with Lasers

    501 views / 0 likes - added

    Thanks to Seb Lee-Delisle for recreating the Asteroids vector graphics with his massive laser. Here’s his site: http://seb.ly/ Of course he’s on Github, where you can find out more about controlling lasers with computers: https://github.com/sebleedelisle/

  • 07:00 Measuring the Berlin TV Tower with a ruler

    Measuring the Berlin TV Tower with a ruler

    609 views / 1 likes - added

    Watch me try to calculate how tall the Berlin TV Tower is using a ruler! Berlin also being a great reminder that dividing walls are a terrible idea. Info about the Berlin Fernsehturm TV Tower: https://www.berlin.de/en/attractions-and-sights/3560707-310405


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