Visit Your Local PBS Station PBS Home PBS Home Programs A-Z TV Schedules Watch Video Donate Shop PBS Search PBS
Go
May 21st, 2009
Physics of Sound
All Music Comes From Vibrations
Get the Flash Player to see the wordTube Media Player.

Brian Greene: Well, all sounds—all music in particular—comes from vibrations. So the reason why you can hear me speak is because I am creating pressure waves that are emanating from my mouth, compressing the air, then rarifies as it spreads out, compresses again. And that ripple of air ultimately bangs into your eardrum, smashes your eardrum with these molecules of air, going back and forth and your eardrum registers and your brain decodes that. And you have the sensation of hearing. So all sound is a matter of producing those pressure waves, those vibrations in air.

  • marcus

    Am interested in your materials

  • Sheron Dobine

    We all adore these lovely little bunny costumes. Aren’t they adorable? I’ve got to get one for my little niece for October Halloween. Can’t wait!

  • David Vicks

    I’m interested in any videos you have about sound and math and vibration and physics and how they are related etc etc.

Produced by WNET.ORG   ©2014 WNET.ORG Properties, LLC. All Rights Reserved.