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Can sound wave also interference just like EM wave

  1. May 26, 2010 #1
    its my exam question.. i am not so sure... but i put it cant because sound is a wave of vibration which it can diffract but not interence... but i dont know.. can sound wave interference?

    cheers
     
  2. jcsd
  3. May 26, 2010 #2

    Dale

    Staff: Mentor

    Yes. That is what the Bose noise cancelling headphones do.
     
  4. May 26, 2010 #3
    awww!! damn !! i got it wrong!!--

    thanks anyway
     
  5. May 29, 2010 #4
    Yes indeed. I witnessed a dramatic demonstration of this at Cornell. A low frequency sound generator was activated at the front of a large lecture hall. Standing waves were set up in the hall's air. At one location the noise was very loud. If you stepped away to a nearby location, you couldn't hear anything!
     
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