Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsAmplitude and Phase in 2D Fourier Transformshttp://demonstrations.wolfram.com/AmplitudeAndPhaseIn2DFourierTransforms/]]>http://demonstrations.wolfram.com/AmplitudeAndPhaseIn2DFourierTransforms/