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History of Science
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Demonstrations 1  20 of 94
Geometry of Gregorian Telescope
New this week
Universal Sundial
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
Joule's Experiment and the First Law of Thermodynamics
Rotating MichelsonMorley Interferometer
Glass Slide Reflectance from Vector Amplitudes
Campanus's Sphere
Rotating Pythagoras
Volume and Surface Area of the Menger Sponge
Riemann's Minimal Surface
Sphere Rolling on Rails
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