Professor Phil Moriarty discussing ferrofluid. All the slow mo footage from this shoot: http://youtu.be/yU3nXtn2ld4 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://www.nottingham.ac.uk/physics/index.aspx Visit our website at http://www.sixtysymbols.com/ Video by James Hennessy with Brady Haran A run-down of Brady's channels: http://bit.ly/bradychannels