6D30.20 Thin Films: Soap Film Interference

PIRA 6D30.20 Thin Films: Soap Film Interference

Click your browser's back button to return to the demo master list.

Photo of the Demonstration at the University of Texas at Austin:

Instructions / Notes:

Faculty: The thin film reflection starts out clear, then develops color bands with a couple of minutes.

White light from a slide projector is reflected off the soap bulb onto a screen.

Please, position the reflected image so that a majority of the students can view it.

Demo Staff: The slide projector needs a to have a blank slide installed in the vertical position.

Please switch off the bulb and leave the fan running for a bit when the demo is not in use.

Last Updated 2023 - University of Texas at Austin Physics Dept. - All Rights Reserved.