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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

PLEASE REQUEST DEMOS WELL IN ADVANCE

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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 Electrostatics
 Electric Fields And Potential
 Capacitance
 Current and Resistance
 Electromotive Force And Current
 DC Circuits
 Magnetic Materials
 Magnetism
 Magnet collection
  video  - Magnetic Fields w/ Iron Filings
  video  - Magnetic Fields w/ Matrix of Iron Rods
  video  - Magnetic Fields Associated with Current Carrying Wires 1
  video  - Magnetic Fields Associated with Current Carrying Wires 2
  video  - Solenoid w/ Iron core
  video  - Magnetic Deflection of an Electron Beam
  video  - e/m Tube Lorentz Force Demonstrator
 Magnetohydrodynamic Motor
  video  - Forces Between Current Carrying Wires
  video  - Vibrating Lamp Filament
  video  - Force on a Current Carrying Wire in a Magnetic Field
 Hall Effect
  video  - Galvanometer Movement
 Inductance
 Induction
 Complex Circuits
 Semiconductors And Tubes
 Transmission Lines and Antennas

 video  - Magnetic Fields Associated with Current Carrying Wires 1

Purpose:

To demonstrate magnetic lines of force around wires and coils carrying current.

Procedure:

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  DEMO VIDEO DOWNLOAD - HD - 1920x1080 / 27.4Mbps - 591MB size  


  DEMO VIDEO DOWNLOAD - LD - 854x480 / 5.69Mbps - 141MB size  


Scatter iron filings in tray and connect to our TDK-Lambda Power Supply (or battery with carbon rheostat in series). With current flowing, gently tap tray which will align filings with B field. Place on overhead projector. Be careful not to leave current on too long or damage will result. One may use knife switch.

Equipment:

  • TDK-Lambda Power Supply
  • Overhead Projector
  • 3 small trays with different wire configurations
  • Connecting Wires
  • Iron Filings