PIRA 7A10.10 - Photoelectric Effect: Photoelectric Effect in Zinc

Photo Shows the Demonstration Set Up for a Humid Day - rod and fur are missing.

Instructions and Notes:

Note: This electrostatic demonstration is performed in open air - Waiting until the middle or end of class on a humid day will be problematic.

To perform the demonstration:

With regards to using the visible spectrum of light - add Demo #. 4D20.10, the Crooke's Radiometer to the Photoelectric Effect Demo.

The Photo Below shows the Demonstration Set Up for a Dry, Winter Day .

Option 2: alternative setup which uses an open air electroscope, but...

The 4 minute video below is intended for staff instructional use.

Last Updated 04/2018 - University of Texas at Austin Physics Department - All Rights Reserved.