Upload

Loading...

This video is unavailable.

Circular Membrane (drum head) Vibration

Like this video?

Sign in to make your opinion count.

Don't like this video?

Sign in to make your opinion count.

Want to watch this again later?

Sign in to add this video to a playlist.

Uploaded on Mar 30, 2009

A circular membrane (drum head) vibrates with a variety of interesting patterns and shapes, each at their own frequency. In this demonstration I took a 6-inch square of latex rubber dental dam (courtesy of my dentist), stretched it over a short length of 4-inch diameter PVC pipe, and held it in place with rubber bands. I drew some lines and circles on the membrane to help identify vibration shapes. A frequency generator (you could use a computer) provides a sine wave to a loudspeaker. A strobe light was used to "slow down" the vibration so that it is easily visible. The flickering in this video is the result of mistiming between the strobe light and the video camera frame rate.

  • Category

  • License

    • Standard YouTube License

Loading...

Loading...

Loading...

Transcript

The interactive transcript could not be loaded.

Loading...

Loading...

Ratings have been disabled for this video.
Rating is available when the video has been rented.
This feature is not available right now. Please try again later.

Loading...

Loading...
Working...
to add this to Watch Later

Add to