Gravitation (A+15)

  A+15+0 The Cavendish experiment: Model and actual apparatus to show.
  A+15+1 Film loop: "The Cavendish experiment", 4:25 min.
  A+15+10 Java Applet Orbiting Bodies
  A+15+30 Film: "The law of gravitation "(Feynman), sound, 56 min.
  A+15+35 Applet: Gravity and Orbits
  A+15+40 Applet: Gravity Force Lab
  A+15+45 Applet: My Solar System
  A+15+50 Drawing Ellipse on Chalkboard