Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsSimple Harmonic Motion of an Electric Dipolehttp://demonstrations.wolfram.com/SimpleHarmonicMotionOfAnElectricDipole/]]>http://demonstrations.wolfram.com/SimpleHarmonicMotionOfAnElectricDipole/