Advantage and disadvantage of resonance

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    Resonance
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Discussion Overview

The discussion revolves around the advantages and disadvantages of resonance in various applications, including its effects on structures like bridges and devices such as radio antennas. Participants explore the implications of resonance in both beneficial and detrimental contexts.

Discussion Character

  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants note that resonance can be advantageous in applications like radio antennas, where energy coupling is desired.
  • Others argue that resonance can be detrimental in structures such as bridges, where it may lead to catastrophic failures.
  • One participant explains that resonances are frequencies where energy is easily coupled into a system, which can be beneficial or harmful depending on the context.
  • It is mentioned that systems can exhibit multiple resonances, which can lead to unpredictable behavior, as seen in multimode lasers.
  • A participant humorously suggests that resonance can be entertaining, referencing videos of bridge collapses, implying that the phenomenon has a dual nature.

Areas of Agreement / Disagreement

Participants express differing views on the nature of resonance, with some emphasizing its benefits in certain applications and others highlighting its potential dangers in others. The discussion remains unresolved regarding the overall assessment of resonance.

Contextual Notes

Participants do not reach a consensus on whether resonance is inherently good or bad, as the evaluation appears to depend heavily on specific applications and contexts.

kindaichi
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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.
 
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It depends on the application. In a radio antenna it's a good thing, in a bridge it typically is not.
 
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.

Claude.
 
Last edited:
russ_watters said:
It depends on the application. In a radio antenna it's a good thing, in a bridge it typically is not.

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

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

how can that not be good?

resonance is always good.
 
Last edited by a moderator:

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