# Can you solve The Frog Problem?

From Standup Mathematician. Check out more fun mathematics problems at Jane Street’s Real Numbers. https://www.janestreet.com/real-numbers/ If you want to have a guess for a river width of 10 (nine lily pads and the opposite bank) then put your guess with the word “guess” in the comments below. If anyone does work out the average guess:…

# Can we film a stroboscopic helicopter?

From Standup Mathematician. Do check out Captain Disillusion’s video “Quick D: Static Helicopter Blades”. http://youtube.com/watch?v=mPHsRcI5LLQ Thanks to Polina for flying the helicopter all day. We hired the helicopter from VVB Aviation who were awesome. https://www.vvb-aviation.com/ My old video about the rolling shutter effect “Rolling Shutter Explained on the Cheap”. https://www.youtube.com/watch?v=nP1elMR5qjc Footage of stage coach from…

# How to mathematically hang a picture (badly).

From Standup Mathematician. Watch Jade’s original video on Tom Scott’s channel “How Knot To Hang A Painting”. https://www.youtube.com/watch?v=-eVd2Ugk9BU Jade’s channel is over here: https://www.youtube.com/channel/UCSIvk78tK2TiviLQn4fSHaw/ And here’s a whole bunch of Steve Mould for you to subscribe to: https://www.youtube.com/user/steventhebrave Send in your solutions for hanging a picture badly! matt+picturehanging@standupmaths.com We have Think Maths resources for any…

# Eclipses can be approximated the same way as π. [ONE TAKE!]

From Standup Mathematician. Huge thanks to Destin for the chat and footage. Check out their video! https://www.youtube.com/watch?v=Nk0MRxXqo9s I was at the 2 July 2019 total solar eclipse in Argentina: 30°41’07.6″S 68°28’50.2″W My old video “Solar Eclipse Maths and the Cosmic Coincidence of the Saros Cycle” https://www.youtube.com/watch?v=ieUvzy6rnnw We’ve made some Think Maths teaching resources on approximating…

# Are odd-numbered mobius-loop cogs possible?

From Standup Mathematician. More details about WiSE and WiTT https://www.janestreet.com/witt-wise-email.html Apply for WiSE: Women in STEM Education https://www.janestreet.com/apply-wise/ Apply for WiTT: Women in Trading and Technology https://www.janestreet.com/apply-witt/ Here is the reddit post I first saw: “I designed an Intertwined Mobius strip of Gears. 60parts, 285 balls” https://www.reddit.com/r/3Dprinting/comments/blmqbd/i_designed_an_intertwined_mobius_strip_of_gears/ Just the gif: https://i.redd.it/wi38hd95ebb11.gif If you really want…

# What’s the story with log(1 + 2 + 3)?

From Standup Mathematician. This is my deep dive into the log(1 + 2 + 3) = log(1) + log(2) + log(3) log troll meme. I’m not going to link to any of the online discussions incase I accidentally encourage brigading. If you want to join in constructively, you can google them. Huge thanks to Jane…

# Calculator Number Trick: rectangle patterns

From Standup Mathematician. Here is the original Fermat’s Library tweet. https://twitter.com/fermatslibrary/status/1052544515632959488 If you want 100% renewable energy: check out Bulb! https://bulb.co.uk/refer/mattp5449 We make Think Maths teaching resources to go with Stand-up Maths videos. For this one we have a cheat sheet to an algebraic proof. http://think-maths.co.uk/standupmaths-videos?yt-calculator-rectangles#calculator-rectangles Many people are asking for the gif. It’s available…

# Recursive PowerPoint Presentations [Gone Fractal!]

From Standup Mathematician. Thanks to Steve Mould for filming with me. Check out his “How viruses self assemble” video. https://youtu.be/3X6qEE2fHvE We have since made the t-shirt I’m wearing available for purchase: https://fotsn.teemill.com/collection/recursive-t-shirt/ We have some free teaching resources for anyone who wants to make a large collaborative fractal! As well as complicated 3D ones we’ve…

# Why didn’t GPS crash?

From Standup Mathematician. More on the GPS roll-over. https://www.theregister.co.uk/2019/02/12/current_gps_epoch_ends/ “In the Future the Modernized GPS Navigation (CNAV and MNAV) message has a 13-bit week number, which for all practical purposes solves this ambiguity” https://www.gps.gov/cgsic/meetings/2017/powers.pdf See me turn on my TomTom: https://www.patreon.com/posts/26065751 If you want to see more hilarious tales about roll-over errors then, well, READ…

# When Buildings Wobble: with Paul Shepherd

From Standup Mathematician. Watch the whole lecture on the Ri channel: https://www.youtube.com/watch?v=6JwEYamjXpA You can buy my book now! Get it from Maths Gear and I’ll totally sign it and stuff. https://mathsgear.co.uk/products/humble-pi But it is also available on Amazon. https://www.amazon.co.uk/Humble-Pi-Comedy-Maths-Errors/dp/0241360234/ref=sr_1_1?_encoding=UTF8&tag=stanupmath-21 Thanks to Paul Shepherd from the University of Bath https://researchportal.bath.ac.uk/en/persons/paul-shepherd CORRECTIONS – Nothing yet. Let me…

# Bayesian Statistics with Hannah Fry

From Standup Mathematician. You can buy Hannah’s great book Hello World from loads of places: http://www.hannahfry.co.uk/helloworld Including signed copies on Maths Gear! https://mathsgear.co.uk/collections/books/products/copy-of-signed-copy-of-hello-world My book Humble Pi is available signed on Maths Gear, as well as un-signed from all the usuals. SIGNED https://mathsgear.co.uk/collections/books/products/humble-pi-a-comedy-of-maths-errors UNSIGNED https://www.amazon.co.uk/Humble-Pi-Comedy-Maths-Errors/dp/0241360234/ref=sr_1_1?_encoding=UTF8&tag=stanupmath-21 The history of Thomas Bayes. http://www-history.mcs.st-andrews.ac.uk/Biographies/Bayes.html All about the theorem…

# Live Q + A with Matt Parker

From Standup Mathematician. Thanks for everyone in the live Q+A! Here is the link to buy Humble Pi: https://mathsgear.co.uk/products/humble-pi-a-comedy-of-maths-errors Support me on patreon and I’ll make more videos: https://www.patreon.com/standupmaths Check me out at position number 1! https://www.thetimes.co.uk/magazine/culture/books-the-sunday-times-bestsellers-march-17-g2x7kjsxx Subscribe to my channel and I’ll do more live stuff! Thanks!

# New Superpermutations Discovered!

From Standup Mathematician. Join in the Superpermutation effort! The superpermutator google group: https://groups.google.com/forum/#!forum/superpermutators Watch the full song in all its 25-minute glory or download it from Bandcamp: https://youtu.be/n4WpyNMfQ2Q https://standupmaths.bandcamp.com/track/5906-superpermutation-by-greg-egan Details about the new superpermutation are on Greg Egan’s website, along with the midi file: http://www.gregegan.net/SCIENCE/Superpermutations/Superpermutations.html#NEWS2 Here is the sheet music if that is your kind…

# Pi Day 2019: calculating π with a balancing beam

From Standup Mathematician. http://wwwh.umble-pi.com You can buy my book now! UPDATE: We are out of beam books! Behind the scenes video is here: https://youtu.be/L_pWPM8T-kc Get it from Maths Gear and be guaranteed a signed first edition hard back. https://mathsgear.co.uk/products/humble-pi But it is also available on Amazon. https://www.amazon.co.uk/Humble-Pi-Comedy-Maths-Errors/dp/0241360234/ref=sr_1_1?_encoding=UTF8&tag=stanupmath-21 For teachers (or anyone who would like some…