Our Pi Playlist (more videos): http://bit.ly/PiPlaylist Some stuff about Pi, the "celebrity number'. More links & stuff in full description below ↓↓↓ This video features maths-loving author Alex Bellos (http://alexbellos.com/) and Professor Roger Bowley from the University of Nottingham. Alex's brilliant book can be found at... UK: http://www.amazon.co.uk/Alexs-Adventures-Numberland-Alex-Bellos/dp/1408809591/ref=pd_sim_b_1 US: http://www.amazon.com/dp/1416588280/ref=cm_sw_su_dp OUR PI VIDEOS --- ALEX BELLOS AND ROGER DISCUSS ITS HISTORY https://www.youtube.com/watch?v=yJ-HwrOpIps BOUNCING BALLS AND A STRANGE PROPERTY https://www.youtube.com/watch?v=abv4Fz7oNr0 MATCHES HELP FIND PI https://www.youtube.com/watch?v=sJVivjuMfWA THE SOUND OF PI https://www.youtube.com/watch?v=wPn4tgmU8ek NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Videos by Brady Haran Patreon: http://www.patreon.com/numberphile Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/ Brady's latest videos across all channels: http://www.bradyharanblog.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9 Numberphile T-Shirts: null Other merchandise: https://store.dftba.com/collections/numberphile