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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Mechanics
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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 - Vibrating Lamp Filament

Purpose:

To demonstrate the Lorentz force on the moving electrical charges.

Procedure:

DEMO VIDEO DOWNLOAD

SETUP: Plug a bulb with a STRAIGHT filament into AC supply. Bring a magnet to the bulb and watch the filament vibrate. For contrast plug it into a DC source to see the difference.

Hints:

Do not use too strong of a magnet or a bulb above 60W. It'll break the filament.