Albert Einstein did amazing things with General Relativity - but he famously got it wrong when it came to the expansion of the Universe. Einstein's Blackboard: https://www.youtube.com/watch?v=KIwpGEvmgvs More relativity videos (with Mike Merrifield): http://bit.ly/Gamma3 More long interviews with Ed: http://bit.ly/CopelandGoesLong Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/sixtysymbols This project features scientists from The University of Nottingham http://bit.ly/NottsPhysics Sixty Symbols videos by Brady Haran http://www.bradyharanblog.com/ Email list: http://eepurl.com/YdjL9