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: Visual Electricity Demonstrator and Generator; Electrolysis of Water; Electroplating; Internal Resistance of Batteries; Fuel Cell; Thermoelectric Generator; Thermoelectric Magnet; Piezoelectricity
DC Circuits
Magnetic Materials
Magnetism
Inductance
Induction
Complex Circuits
Semiconductors And Tubes
Transmission Lines and Antennas

Visual Electricity Demonstrator and Generator

Purpose:

To help your students better understand the dynamic nature of electric current.

Procedure:

Once connected to the generator or batteries the first setup visualizes the electric current direction by displaying a running LEDs series.

Using a second setup one can demonstrate the difference between the AC/DC current. Ordinary AC current lights up both LED. Filtered DC current light only one with certain intensity. Half-wave rectified DC current lights up only one LED at half intensity.

Hints:

Can be used in conjunction with a capacitor.