Professor Phil Moriarty struggles with gauge blocks. More links and info below ↓ ↓ ↓ 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 Patreon: https://www.patreon.com/sixtysymbols Sixty Symbols videos by Brady Haran http://www.bradyharanblog.com/ Additional editing and animation: Pete McPartlan http://www.petemcpartlan.co.uk/ Email list: http://eepurl.com/YdjL9