Quantum Cheshire Cat discussed by Professor Mike Merrifield from the University of Nottingham. Nature paper on this: http://bit.ly/1z2j00m Experiment pics courtesy of Tobias Denkmayr Cat drawn by Knut Johannes Håland Music by Alan Stewart Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/#!/periodicvideos This project features scientists from The University of Nottingham http://bit.ly/NottsPhysics Sixty Symbols videos by Brady Haran A run-down of Brady's channels: http://bit.ly/bradychannels