Code Number: 7A10.42

Demo Title: Photoelectric Relay

Condition: Good

Principle: Photoelectric Effect

Area of Study: Modern Physics

Equipment:

Flashlight and Photoelectric Relay.

Procedure:

Set the demonstration up as shown, substituting a Variac and light bulb for the flashlight if desired. Turn on the relay and allow it to warm up for at least 30 seconds. Aim the flashlight at the window in the phototube. The light bulb should light up when light falls on the phototube and go off when the light is removed.

References:

G. D. Freier and F. J. Anderson, "Ok-4. Photoelectric Effect Produced with Ultraviolet Light", A Demonstration Handbook for Physics.
G. D. Freier and F. J. Anderson, "Ok-3. Photoelectric Effect", A Demonstration Handbook for Physics.

Disclaimer

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Instructional Resources and Lecture Demonstrations

7A10.42 - Photoelectric Relay

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