Uploaded October 2021 | Updated September 2026, 2 weeks ago

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Hannah’s book is out now!
waterstones.com/book/rutherford-and-frys-complete-guide-to-absolutely-everything-abridged/adam-rutherford/hannah-fry/2928377065652
amazon.co.uk/dp/1787632636

If you have a spare 2⅔ hours you can watch Matt hand craft a protractor. Yes, I know the audio is glitchy. youtu.be/rSox1RRbxXA

More about Abu Arrayhan Muhammad ibn Ahmad al-Biruni: mathshistory.st-andrews.ac.uk/Biographies/Al-Biruni

This video was made possible by my Patreon supporters for. Those cocktails were officially on you. patreon.com/standupmaths

CORRECTIONS
- None yet! Let me know if you spot any mistakes.

Editing and filming by Trunkman Productions trunkman.co.uk
Protractors by Matt Parker
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback