Demos by PIRA

  3D30.35Twirling Tube
  3D30.40Helmholtz Resonators with tuning forks and a candle
  3D30.40Helmholtz resonators drive radiometer vanes, using tuning forks.
  3D30.50Reuben's tube: Standing sound waves in flames along a large pipe.
  3D30.60Kundt's tube: Powder in tube shows standing waves.
  3D30.70Hoot Tube