Marvelous Hand Cranked Machine for Rare Earth Ball Magnets [http://laughingsquid.com/marvelous-hand-cranked-machine-for-rare-earth-ball-magnets/] - 2011-05-26 23:24:17 - public:time contraption, cranked, diy, hand, magnetism, magnets, mtow - 7 | id:2733 -
Magnetism, Radiation, and Relativity [http://physics.weber.edu/schroeder/mrr/MRRtalk.html] - 2009-08-24 20:16:04 - public:time cool, electromagnetism, magnetism, math, physics, radiation, relativity, science, teaching - 9 | id:3619 -