Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsAlarm Clockhttp://demonstrations.wolfram.com/AlarmClock/]]>http://demonstrations.wolfram.com/AlarmClock/Drop Shadowshttp://demonstrations.wolfram.com/DropShadows/]]>http://demonstrations.wolfram.com/DropShadows/An Automatic Analog/Digital Clockhttp://demonstrations.wolfram.com/AnAutomaticAnalogDigitalClock/]]>http://demonstrations.wolfram.com/AnAutomaticAnalogDigitalClock/Symbol Rotation Patternshttp://demonstrations.wolfram.com/SymbolRotationPatterns/]]>http://demonstrations.wolfram.com/SymbolRotationPatterns/Integer Rotation Patternshttp://demonstrations.wolfram.com/IntegerRotationPatterns/]]>http://demonstrations.wolfram.com/IntegerRotationPatterns/Character Rotation Patternshttp://demonstrations.wolfram.com/CharacterRotationPatterns/]]>http://demonstrations.wolfram.com/CharacterRotationPatterns/Excavator Operatorhttp://demonstrations.wolfram.com/ExcavatorOperator/]]>http://demonstrations.wolfram.com/ExcavatorOperator/