Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsModel for Earthquake on a Tall Buildinghttp://demonstrations.wolfram.com/ModelForEarthquakeOnATallBuilding/]]>http://demonstrations.wolfram.com/ModelForEarthquakeOnATallBuilding/