Demos by PIRA

  5K20.10Damped pendulum: Swinging metal disks damped in magnetic field.
  5K20.25Eddy currents: Neodymium Magnet Drop.
  5K20.25Eddy currents:Small magnet slowly drops between aluminum rails.
  5K20.30Jumping rings: High current AC coil causes rings to jump.
  5K20.41Levitator: Aluminum dish floats four inches off platform.