Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsInteracting Cylindrical Magnetshttp://demonstrations.wolfram.com/InteractingCylindricalMagnets/]]>http://demonstrations.wolfram.com/InteractingCylindricalMagnets/Magnetic Field of a Hollow Cylindrical Magnethttp://demonstrations.wolfram.com/MagneticFieldOfAHollowCylindricalMagnet/]]>http://demonstrations.wolfram.com/MagneticFieldOfAHollowCylindricalMagnet/