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Demonstrations 1  20 of 162
Glass Slide Reflectance from Vector Amplitudes
New this week
Proposition 30, Book XI, Euclid's Elements
Proposition 29, Book XI, Euclid's Elements
Europe Vote Exponent
Asylum in the United States
Hirano's Construction of a Regular Pentagon
Campanus's Sphere
Proposition 7, Book XII, Euclid's Elements
Country Groups
Sphere Rolling on Rails
Three Proofs of the Pythagorean Theorem
The Euclidean Algorithm and Simple Continued Fractions
Three Coalescing Soap Bubbles
Motion of Pendulum Interrupted by a Peg
Calculating the Earth's Circumference at Any Date from Any Location
Dudeney's Proof of the Pythagorean Theorem
Fundamental Theorem of Arithmetic
Gridiron Pendulum
Motion of Pendulum with Varying Length
Leonardo da Vinci's Ornithopter
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