Solid State and Semiconductors (D+60)

  D+60+0 P-N Junction as a rectifier: Current flows one way.
  D+60+2 P-N Junction as a rectifier: Diode bridge rectifies AC voltage.
  D+60+4 Photoelectric effect: Light on P-N junction causes current flow.
  D+60+6 Several commercial solar cells.
  D+60+8 Commercial solar cell spins propeller using small arc lamp.
  D+60+10 Impact on piezo-electric device flashes neon bulb.