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Al Tobias (wat4y) - Office: Gibson S123 & Physics 218, (434) 924-0538

Physics Demo Manual

Demonstrations are cataloged according to PIRA Bibliography


Due to Physics Building renovations, the lead time to set up demo requests has increased due to the need to transport equipment across campus. Please be kind and let me know well ahead of time what you need.

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 Harmonic Motion
  video  - Transverse Waves
  video  - Longitudinal Waves
 Acoustic levitation
  video  - Standing Waves
 Soap Film Standing Waves
 Bell in a Vacuum
  video  - Doppler Buzzer
  video  - Diffraction & Interference in Ripple Tank
 Double Slit Interference of Microwaves
 Interference of Sound Waves
  video  - Tuning Fork Beats
  video  - Oscillator Beats

 video  - Transverse Waves


To demonstrate the propagation of transverse waves via a set of levitating "sticks" and a large coil "slinky".


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Use the PASCO "Wave Sticks" Demonstrator to illustrate transverse waves both reflected and not. This can also be used to demonstrate the dependence of wave speed on mass. The long spring may be attached to the lecture bench and stretched out, being hand driven to produce wave trains and standing waves. Our large coil "slinky" can be anchored on one end and excited on the other to produce both transverse and longitudinal waves. Alternatively one can use the sticks on the string apparatus to demonstrate the transverse waves.


  • Wave demonstrator
  • Slinky
  • Long Spring
  • Sticks on the string