Sound waves move air?

[Farrell]

Yes - the amplitude of sound waves is very small compared to when you feel wind. You feel wind moving on the scale of air molecules moving inches and feet. I don't know what the amplitude of frequencies are, but you can get an idea by looking at the soundboard of a piano - it is moving a similar amplitude as the air - so small you can't really see it.

"why can't you feel sound waves moving past your ear? ...(or can you feel them if the sound is loud enough?"

Yes, you can - if the sound wave is high enough amplitude AND low enough frequency (long sound wave). Ever sit in your car at a stoplight next to a "gangsta-rapping, mega-watt, full-volume"-equipped car? Or perhaps you are in the habit of listening to Dr. Dre and Snoop Dogg at full volume from you 8,000 Watt six-15-inch subwoofers stereo? Anyway, you can feel the pressure (sound) waves on your body. Sit in one of those cars and you can even watch your hair move (but watch out for flying glass!)!

But most sound waves cause very tiny movements of air molecules and you just can't feel them on your skin - that is why your eardrum is SOOOOOO sensitive - so that IT CAN "feel" the air movements.

That make sense? Hope this helps. Oh, and, I hope I have made correct factual statements...... ;-)

Terry Farrell
  ----- Original Message ----- 
  From: KeyKat88 at aol.com 
  To: pianotech at ptg.org 
  Sent: Friday, January 25, 2008 10:32 AM
  Subject: Sound waves move air?


  Greetings,

          Soundwaves Do move air then, but on a much smaller level, Is that right?

  Julia Gottshall
  Readding, PA





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