Massachusetts Institute of Technology
Sign in | Create Account

Soap Film Oscillation

A wire frame is dipped in bubble solution and placed in front of a speaker. At certain frequencies, the soap film oscillates in symmetrical patterns called normal modes.

A light is reflected off the soap film through a lens onto the wall to show these normal modes as the frequency of the function generator is increased. The first set of normal modes occur at frequencies lower than we can hear with our ears, which is why you can't hear the speaker in the video until the frequency is increased.

Comments (1)

Try using the speed switcher button (says “HD Auto” by default) and select the lowest setting.

Posted over 3 years by brew

You need to log in, in order to post comments. If you don’t have an account yet, sign up now!

Created
June 30, 2009 14:12
Category
Tags
License
Creative Commons Attribution-NonCommercial (What is this?)
Additional Files


Viewed
44443 times

More from MIT Department of Physics Technical Services Group

Tuning Forks: Resonance & Beat Frequency

Tuning Forks: Resonance & Beat Freq...

Added almost 2 years ago | 00:01:51 | 3422 views

Lenz's Law with Copper Pipe

Lenz's Law with Copper Pipe

Added 2 years ago | 00:01:38 | 5272 views

A Heat Gun

A Heat Gun

Added 11 months ago | 00:01:17 | 1428 views

Center of Mass Trajectory

Center of Mass Trajectory

Added almost 5 years ago | 00:01:30 | 47270 views

Double Pendulum

Double Pendulum

Added over 3 years ago | 00:02:29 | 26475 views

Weighted Hacksaw Blade

Weighted Hacksaw Blade

Added almost 2 years ago | 00:00:54 | 3600 views