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History of Science
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Demonstrations 1  20 of 98
The Ulam Prime Spiral
Sphere Rolling on Rails
Bell's Theorem
Rømer's Measurement of the Speed of Light
Simulation of Pythagorean Cup
Van Vleck's Model of the Helium Atom in the Old Quantum Theory
OilDrop Experiment
Detailed Analysis of Rutherford Scattering of Alpha Particles
Universal Sundial
Geometry of Gregorian Telescope
The Universe in a Popup Book
Calculating the Earth's Circumference at Any Date from Any Location
3D Zoetrope
Trebuchet Ballistics
Leonardo da Vinci's Helicopter
The Thomson Problem with Central Forces
Hourglass
Particle Moving on a Rotating Disk
Enumerating the Rational Numbers
Da Vinci's Perpetual Wheel
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