Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsEvaporation of Water from a Pool or Pondhttp://demonstrations.wolfram.com/EvaporationOfWaterFromAPoolOrPond/]]>http://demonstrations.wolfram.com/EvaporationOfWaterFromAPoolOrPond/Flow of Fluid through a Hole in a Tankhttp://demonstrations.wolfram.com/FlowOfFluidThroughAHoleInATank/]]>http://demonstrations.wolfram.com/FlowOfFluidThroughAHoleInATank/