Using radioactive material to generate random numbers... Subscribe to our new channel COMPUTERPHILE here - http://bit.ly/XqEDYi More links & stuff in full description below ↓↓↓ This video features James Clewett. Extra video about what happened next with our Strontium random numbers at https://www.youtube.com/watch?v=noDSyLzVz2g And the Greek extra bit is at https://www.youtube.com/watch?v=YCsBFZGZu3s 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