Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsRepulsion between Charged Pellets in a Boxhttp://demonstrations.wolfram.com/RepulsionBetweenChargedPelletsInABox/]]>http://demonstrations.wolfram.com/RepulsionBetweenChargedPelletsInABox/