Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsAny Triangle Can Tilehttp://demonstrations.wolfram.com/AnyTriangleCanTile/]]>http://demonstrations.wolfram.com/AnyTriangleCanTile/Rømer's Measurement of the Speed of Lighthttp://demonstrations.wolfram.com/RomersMeasurementOfTheSpeedOfLight/]]>http://demonstrations.wolfram.com/RomersMeasurementOfTheSpeedOfLight/Ruler and Compass Construction of a Square with Doubled Areahttp://demonstrations.wolfram.com/RulerAndCompassConstructionOfASquareWithDoubledArea/]]>http://demonstrations.wolfram.com/RulerAndCompassConstructionOfASquareWithDoubledArea/Buffon's Needle Experiment for Three Types of Gridshttp://demonstrations.wolfram.com/BuffonsNeedleExperimentForThreeTypesOfGrids/]]>http://demonstrations.wolfram.com/BuffonsNeedleExperimentForThreeTypesOfGrids/Colorcoded Country Comparisonhttp://demonstrations.wolfram.com/ColorcodedCountryComparison/]]>http://demonstrations.wolfram.com/ColorcodedCountryComparison/Euclid 1.47 Animatedhttp://demonstrations.wolfram.com/Euclid147Animated/]]>http://demonstrations.wolfram.com/Euclid147Animated/Graphical Solution of a Quadratic Equation Using the Arithmetic and Geometric Meanhttp://demonstrations.wolfram.com/GraphicalSolutionOfAQuadraticEquationUsingTheArithmeticAndGe/]]>http://demonstrations.wolfram.com/GraphicalSolutionOfAQuadraticEquationUsingTheArithmeticAndGe/Graphical Solution of a Quadratic Equation Using a Result from Opticshttp://demonstrations.wolfram.com/GraphicalSolutionOfAQuadraticEquationUsingAResultFromOptics/]]>http://demonstrations.wolfram.com/GraphicalSolutionOfAQuadraticEquationUsingAResultFromOptics/Power Voting Systems Like the United Nations Security Councilhttp://demonstrations.wolfram.com/PowerVotingSystemsLikeTheUnitedNationsSecurityCouncil/]]>http://demonstrations.wolfram.com/PowerVotingSystemsLikeTheUnitedNationsSecurityCouncil/Polyhedra, Spheres, and Cylindershttp://demonstrations.wolfram.com/PolyhedraSpheresAndCylinders/]]>http://demonstrations.wolfram.com/PolyhedraSpheresAndCylinders/Sphere Rolling on Railshttp://demonstrations.wolfram.com/SphereRollingOnRails/]]>http://demonstrations.wolfram.com/SphereRollingOnRails/The Sum of Opposite Angles of a Quadrilateral in a Circle is 180 Degreeshttp://demonstrations.wolfram.com/TheSumOfOppositeAnglesOfAQuadrilateralInACircleIs180Degrees/]]>http://demonstrations.wolfram.com/TheSumOfOppositeAnglesOfAQuadrilateralInACircleIs180Degrees/Bell's Theoremhttp://demonstrations.wolfram.com/BellsTheorem/]]>http://demonstrations.wolfram.com/BellsTheorem/Equidistance and Betweenness in Euclidean Plane Geometryhttp://demonstrations.wolfram.com/EquidistanceAndBetweennessInEuclideanPlaneGeometry/]]>http://demonstrations.wolfram.com/EquidistanceAndBetweennessInEuclideanPlaneGeometry/Archimedean Solidshttp://demonstrations.wolfram.com/ArchimedeanSolids/]]>http://demonstrations.wolfram.com/ArchimedeanSolids/Platonic Solidshttp://demonstrations.wolfram.com/PlatonicSolids/]]>http://demonstrations.wolfram.com/PlatonicSolids/Oil-Drop Experimenthttp://demonstrations.wolfram.com/OilDropExperiment/]]>http://demonstrations.wolfram.com/OilDropExperiment/Detailed Analysis of Rutherford Scattering of Alpha Particleshttp://demonstrations.wolfram.com/DetailedAnalysisOfRutherfordScatteringOfAlphaParticles/]]>http://demonstrations.wolfram.com/DetailedAnalysisOfRutherfordScatteringOfAlphaParticles/World Energy: Electricity, Oil, and Gashttp://demonstrations.wolfram.com/WorldEnergyElectricityOilAndGas/]]>http://demonstrations.wolfram.com/WorldEnergyElectricityOilAndGas/Calculating the Earth's Circumference at Any Date from Any Locationhttp://demonstrations.wolfram.com/CalculatingTheEarthsCircumferenceAtAnyDateFromAnyLocation/]]>http://demonstrations.wolfram.com/CalculatingTheEarthsCircumferenceAtAnyDateFromAnyLocation/