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Demonstrations 1 - 14 of 14
The Earth as Seen from the Moon
Three World Systems for Earth-Sun-Mars Kinematics
Euclid 1.47 Animated
Aberration of Light
Copernicus Epicycles versus Kepler's Ellipses
Kepler's Harmonices Mundi
Ptolemaic to Copernican World System Continuum
A Visual Proof of Thales's Intercept Theorem
Fate of the Euler Line and the Nine-Point Circle on the Sphere
Seasonal Variations of Day and Night
The Universe in a Popup Book
Dante's Medieval Cosmology
Spherical Pythagorean Theorem
Rotating Michelson-Morley Interferometer
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