• Time-Lapse photography of stars near Polaris, without star trails
  • Time-Lapse photography of stars near Polaris, with star trails. The bright star near the center is Polaris; note that it barely moves.
  • Lucretius: The Nature of the Universe (complete work)
  • Harmonics in music
  • Polycrates' Tunnel
  • Retrograde motion: earth-centered and sun-centered explanations
  • Retrograde motion: Sun-centered explanation II
  • Details of epicycles, eccentrics, and equant points
  • The Voyager Record, Part I
  • The Voyager Record, Part II
  • Hubble Deep Field movie
  • The Hubble Deep Field -- External Links
  • Venus Phases Simulator
  • Kepler's Laws Demonstration
  • Kepler's Laws Demonstration 1
  • Kepler's Laws Demonstration 2
  • Kepler's Laws Demonstration 3
  • The Middle finger of Galileo's right hand
  • Sky and Telescope Applet of Saturns moon locations
  • Sky and Telescope Applet of Jupiters moon locations
  • How Tycho died theory.
  • Star Charts I, set for L.A.
  • Star Charts II
  • This week's sky, from Sky and Telescope
  • Demonstration of beat frequency
  • Pure sound tone generator
  • Two-slit Interference of water waves applet
  • Two-slit interference: Applet showing slit separation effects
  • The Doppler effect for sound
  • The Doppler effect for sound: Police car generating sound waves
  • The Doppler effect for sound: Audio of previous applet
  • How to Calculate the AU based on the Solar Transit of Venus
  • A brief history of Einstein's Brain
  • Einstein's Brain: Details
  • The Michelson-Morley Experiment
  • Videos of physics demos, very nicely done
  • Vibrating Charges applet
  • EM wave demo applet
  • Double-slit for light
  • Bohr's Quantum Atom
  • Double-slit for electrons
  • Links to original EPR/Bell papers
  • The Stern-Gerlach Experiment, Electron Spin, and Correlation Experiments
  • An Explanation of Bell's Theorem
  • Amusing history of Western philosophy video