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
Fluid Mechanics
Oscillations And Waves
Thermodynamics
Electricity And Magnetism
Optics
Modern Physics
Audio-Visual
New or Modified Entries (within the last month)

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Electrostatics
Electric Fields And Potential
Capacitance
Current and Resistance
Electromotive Force And Current
DC Circuits
Magnetic Materials
Magnetism
Inductance
Induction: 1x 2x 4x Coils and Bar Magnet; video - Hanging Ring and Magnet; Flash Bulb Coil; video - LED Coil; video - Eddy Current Pendulum; video - Lenz's Law and Eddy Currents; video - Eddy Current Tube; video - Jumping Ring; Eddy Current Levitation; Eddy Current Levitation 2; Eddy Currents 2; video - Transformers; Electric Motor; Hand Crank Generator; Bicycle generator
Complex Circuits
Semiconductors And Tubes
Transmission Lines and Antennas

video - Eddy Current Pendulum

Purpose:

To show the effects of eddy current damping on the motion of a pendulum.

Procedure:

DEMO VIDEO DOWNLOAD

SETUP: A pendulum whose bob is a strong Ni/Fe/B magnet is suspended closely over a copper plate. When the bob is pulled back and released, its motion is immediately damped by eddy currents formed in the copper plate.

Equipment:

Alligator Clips
Stand
copper plate
Small Cylindrical NiFeB Magnet