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Advantage and disadvantage of resonance

  1. Jan 24, 2007 #1
    I have always been wondering,what is the advantage and disadvantage of resonance.I am currently studying it right now,and i do know it had caused a bridge to collapse before.
  2. jcsd
  3. Jan 24, 2007 #2


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    Staff: Mentor

    It depends on the application. In a radio antenna it's a good thing, in a bridge it typically is not.
  4. Jan 24, 2007 #3

    Claude Bile

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    Science Advisor

    Resonances are typically frequencies where energy is easily coupled into the system. Depending on the application, this easy coupling of energy can be good or bad.

    When we want to couple energy into a system, say in the case of an antenna, resonances are desirable, whereas if we want do dampen out energy in the case of anti-vibration table, resonances are bad news. Sometimes systems can exhibit multiple resonances, which is usually a bad thing no matter what, because a system that is jumping between resonances is usually rather unpredictable. Any multimode laser is a good example of where this occurs.

    Last edited: Jan 24, 2007
  5. Jan 24, 2007 #4


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    oh c'mon, Russ. it makes for great entertainment!

    http://video.google.com/videoplay?docid=-3932185696812733207 [Broken]
    http://video.google.com/videoplay?docid=8849554834285920420 [Broken]
    http://video.google.com/videoplay?docid=7836010763965729158 [Broken]

    how can that not be good?

    resonance is always good.
    Last edited by a moderator: May 2, 2017
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