Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsParabolic Trough Solar Concentratorhttp://demonstrations.wolfram.com/ParabolicTroughSolarConcentrator/]]>http://demonstrations.wolfram.com/ParabolicTroughSolarConcentrator/