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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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 Surface Tension
 Fluid Statics
 Fluid Dynamics
  video  - Torricelli's Law
 Air Driven Devices
  video  - Venturi Tube
 Toilet paper gun
  video  - Airplane Wing in Wind Tunnel
  video  - Air Flow Dynamics
 Magnus Effect - Cart on Track
  video  - Magnus Effect Appartus
 Terminal Velocity in Glycerin and Water
 Terminal Velocity of Coffee Filters
  video  - Laminar and Turbulent Flow
 Tornado Vortex
 Vortex Cannon

 video  - Laminar and Turbulent Flow


To demonstrate laminar and turbulent flow of liquids and gases.


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  Ultra Laminar - DEMO VIDEO DOWNLOAD  

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  Rectangular Dish - DEMO VIDEO DOWNLOAD  

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  Circular Dish - DEMO VIDEO DOWNLOAD  

For laminar flow, inject one drop of food dyed glycerin into the laminar flow demonstrator (the glycerin filled cylinder) and spin the handle on top of the cylinder 5 turns in one direction, then 5 turns back. You'll see the original drop's shape magically return!

For turbulent flow, pour rheoscopic fluid into a glass tray and pull through the liquid with a wooden tongue depressor or stirring rod.

One can display this demo via a document camera. One can emphasize the rheoscopic fluid texture by using cross polarizing films.