Model of the nucleus: Steel balls in plastic dish on OHP.

• F+20+10

diagram for demo

Model of the nucleus: Steel balls in dish on OHP. This dish is transparent. There are many similarities between a pendulum undergoing simple harmonic motion by oscillating back and forth, and a ball undergoing simple harmonic motion by rolling back and forth without sliding in a concave spherical bowl. See the Welch Instruction Sheets (Room 72 LeConte) for an analysis of this. Use Digital Timer or Stopwatch to measure the period of the oscillation.

Related Demos

F+20+0 "Plum pudding": Corks with magnets float in bowl/solenoid on OHP. F+20+5 Rutherford scattering model: Steel balls, launcher, and "hill". F+20+15 Film: "Rutherford atom", sound, 40 min. F+20+20 Mechanical models of the hydrogen atom. F+20+25 Bohr-Stoner charts(5): Electron configurations of the elements. F+20+30 Wall chart or online applet of periodic table. F+20+35 Wall chart or online applet of the nuclides. F+20+40 Applet: Build an Atom F+20+45 Applet: Models of the Hydrogen Atom F+20+50 Applet: Orbits F+20+55 Applet: Quarks F+20+60 Applet: Atoms and Spectra F+20+65 Applet: Elements F+20+70 Applet: Electron Configurations F+20+75 Applet: Rutherford Scattering F+20+80 Applet: Predicted Rutherford Scattering from a Thomson Atom