Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsVector Plot of Helmholtz Coil in Earth's Magnetic Fieldhttp://demonstrations.wolfram.com/VectorPlotOfHelmholtzCoilInEarthsMagneticField/]]>http://demonstrations.wolfram.com/VectorPlotOfHelmholtzCoilInEarthsMagneticField/The Headlight Effecthttp://demonstrations.wolfram.com/TheHeadlightEffect/]]>http://demonstrations.wolfram.com/TheHeadlightEffect/