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Advantage and disadvantage of resonance

by kindaichi
Tags: advantage, disadvantage, resonance
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kindaichi
#1
Jan24-07, 08:13 AM
P: 25
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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russ_watters
#2
Jan24-07, 12:12 PM
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P: 22,243
It depends on the application. In a radio antenna it's a good thing, in a bridge it typically is not.
Claude Bile
#3
Jan24-07, 05:35 PM
Sci Advisor
P: 1,474
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.

rbj
#4
Jan24-07, 07:42 PM
P: 2,251
Advantage and disadvantage of resonance

Quote Quote by russ_watters View Post
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?do...85696812733207
http://video.google.com/videoplay?do...54834285920420
http://video.google.com/videoplay?do...10763965729158

how can that not be good?

resonance is always good.


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