Demos by PIRA

7A10 Photoelectric Effect


  7A10.10UV light hits charged zinc plate and discharges electroscope.
  7A10.35Light through different filters into phototube changes current.
  7A10.40Several commercial solar cells.
  7A10.40Commercial solar cell spins propeller using small arc lamp.
  7A10.40Commercial solar cell spins propeller using halogen light source.
  7A10.43Recording modulates laser beam which hits solar cell and amplifier.

7A15 Millikan Oil Drop


7A20 Compton Effect


7A50 Wave Mechanics


  7A50.20Tunneling:Microwave analogy using wax prisms.

7A55 Particle/Wave Duality


7A60 X-ray and Electron Diffraction


  7A60.10Electron diffraction by aluminum and graphite on CRT.
  7A60.50Bragg diffraction using microwaves and steel balls in foam cube.
  7A60.50Bragg diffraction using microwaves and steel balls in foam cube.

7A70 Condensed Matter