Pulsed DC Transformer with Embedded Magnets

[XS-NRG]

well suppose it is true.
suppose two forks sound louder then one.

doesn't this mean that the extra sound from the second fork makes the first fork sound even louder?
And then the extra sound from the first fork makes the second fork sound even louder.

Looks like we have some sort of SOUND RUNAWAY here!!

I know one when i see one.

[The Observer]

BEP,

I'm trying to interpret what you said.
I think you are saying that...
                                         if it rings louder then the it rings shorter, or if it rings longer then it rings softer.

If so, all I can say is, Nope....

5. Acoustics - Intensification and prolongation of sound, especially of a musical tone, produced by sympathetic vibration.

                                         Louder AND Longer
                                                  or
                                Intensification AND Prolongation.

An acoustic guitar rings 1000 times louder than an electric guitar. (the Acoustic Cavity AMPLIFIES the sound of the string)
A tube of air will amplify the sound from a speaker without affecting the speaker. (a very common physics experiment).

If you have an acoustic guitar.. just tune 2 stings to the same tone and do the experiment.
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XS,

What you are describing is called Feedback.. and is the reason the forks ring longer.
Remember that only a very small portion of the energy emitted from the forks ever encounter the other.

Best Regards

[chrisC]

Chris,
...

This is VERY simple physics.


Best Regards,
                     The Observer

So simple you thoroughly confusing yourself. Take a break Mr. Observer, try to observe something you don't have to think so hard!

cheers
chrisC

[utilitarian]

If so, all I can say is, Nope....

Observer,

The ultimate question is this: does the sound energy coming out of the tuning fork setup exceed the energy that was put in by the person striking the initial fork?

When you read definitions of resonance that talk about amplification of sound energy, you have to be aware of the context of the term "amplification."  Yes, a sound box amplifies the sound that a listener hears.  But it does so not through some kind of unexplainable energy increase.  The amplification is merely a method to efficiently capture the energy from the struck forks and send it back out into the air for the listener to hear, rather than having much of the energy absorbed by the desk the tuning for is sitting on, for example.

So you need to get that difference straight in your mind.  Just because a sound box makes a guitar louder, does not mean there is any energy amplification at all.  It is just a situation of efficiently getting the sound to the listener's ears.

As far as your experiment, I would think that measuring the average volume and length of time that one tuning for rings versus two is a good start.  Just be aware that the experiment may not be completely conclusive.  I am no expert on transfer of sound energy, but there may be some slight efficiency gain in having two tuning forks ringing in resonance as opposed to one, so the sound may play slightly longer.  Or there may actually be a decrease in efficiency, due to friction in air or what have you, and you may actually lose sound energy.  But I think it is a good start.

[The Observer]

Util,

Thanks for your input.

You said,

The ultimate question is this:

does the sound energy coming out of the tuning fork setup exceed the energy that was put in by the person striking the initial fork?

A fraction of the energy from the Strike is actually stored in Fork. (According to MIT Professor)
A piezo buzzer attached to the fork would be a better substitute.

However, I am talking about amplification of SOUND Energy.
                The second fork doesn't care if the sound is coming from a fork or a speaker.
                It takes a little bit of energy.. stores it vibrationally, then vibrates at an amplitude consistent with energy stored.
                Then adds to the Amplitude of the sound wave it is interacting with.
                If the sound wave comes from a speaker, you will Not see a large prolongation because Feedback does not occur.
                                                                      (the speaker has a low Q value, it won't store energy and vibrate on it's own)
You also said,

I would think that measuring the average volume and length of time that one tuning fork rings versus two is a good start.

Thankyou.
----->  That is definitely a logical and scientifically Sound way to answer the question.  <----
The Dictionary's Definition does lead one to believe that       both Volume and Length of Time     are increased.

5. Acoustics - Intensification and prolongation of sound, especially of a musical tone, produced by sympathetic vibration.
You can't argue with that.

Best Regards,
                     The Observer