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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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 Thermal Properties Of Matter
 Thermometer Collection
 Liquid Crystal
 Absolute Zero
  video  - Thermal Expansion
 LN2 - Thermal Effects on Solids and Gases
 Heat And The First Law
 Change Of State
 Kinetic Theory
 Gas Law
 Entropy And The Second Law

Absolute Zero


To determine the absolute zero point on the celsuis scale.


Pump out the air in the pressure bulb and refill with helium to approximately 1100mm.


Mix methanol and dry ice in dewar large enough to hold bulb.


  • Vaccum Pump
  • Dewar
  • Bulb pressure gauge
  • Dry Ice
  • Graph paper for overhead projector
  • Helium Gas
  • Hot pot 1/2 full of water
  • Ice Water Bath
  • Liquid Nitrogen
  • Methanol
  • Bucket