2. No... the node of the string does not vibrate.
    Everyone thinks this... but it just simply is not true.

But if you put your ear flat on a solid bodied guitar whilst it is being
played, the sound will come through clearly to some considerable extent.

I think too that the solid body of a guitar would participate with
the strings in resonance.

Most definitely.  In fact, I often tune my electrics string to string by the feel of the vibrations in the neck and not by listening to the tone (if the guitar has the intonation set well).  You can feel the notes coming in and out of phase just as well as you can hear them.  I have more difficulty hearing the phasing unless my amp is up and distorted, but that can cause other frequencies to interfere due to feedback.

One simple sound board test to try:  Strum your unplugged electric normally, and then while pressing the tuning head against a wall.  The wall will act like a sound board and it will be much louder.  You can do this with most any hard surface.  I do this while setting the intonation (each individual bridge saddle distance from the nut) since I do this by comparing the whole string notes to the true harmonic at the 19th fret, which can be a bit faint to hear without that trick.

M.

Here's a link to a similar experiment....

                                      http://phoenix.phys.clemson.edu/labs/224/resonance/resonance.mpg

The Observer

M.

The string of an acoustic Guitar vibrates longer...(this is a fact anyone can check)

Absolutely not true.  Your "experiment" with the acoustic guitar is flawed since you do not acknowledge that energy from the plucked high E is transferred mechanically to the sound board and then to the low E and A.  If you want to prove this for yourself, de-tune your low E and A until they are slack and time how long your high E rings.  It will ring longer than when you are damping your low E and A.  This is because when you damp your low E and A you are in effect also damping your high E, since they are mechanically coupled through the bridge and sound board.

An unamplified guitar??/ Compared to what??

The article clearly states that an unamplified guitar is "one with no soundboard at all".  Similar to a solid body electric (not plugged in).  The (unlpugged) electric guitar string rings longer, but quieter.  The longer ring time (sustain) is arguably the main feature that leads many guitarists to the electric guitar.  Can't get it with an acoustic.  Unless you start inducing some sort of feedback, either mechanical or acoustic.

Let's talk about resonance and how it works Mon.

Sure.  Resonance is neat.  But I'd prefer to talk about something that has to do with "free energy".  Resonance produces some interesting effects, but not free energy as far as I'm aware.

M.

Observer,

1)  You are the only one I have seen stand by the statement: 

     Same string...Same Strum... Acoustic String vibrates longer than Electric String

This is completely untrue.  I believe you are not recognizing that the electric string vibrates longer because you cannot "hear" it.  If you were to amplify the output (as it is designed to do) you would clearly "hear" that the electric rings out much longer than the acoustic.  So far your "tests" have not been performed properly and you are sticking to your false observations.  Appears to be motivated reasoning.

2)  The article is referring to a an acoustic guitar WITH sound board as "amplified" (vs. one without a sound board being unamplified).  The sound board is "amplifying" in the sense that it is converting the mechanical vibration of the string into louder sound waves.  Amplify in this case means only to make louder.  It does not mean, however, that extra energy is added (or created) in order to do so.  It is simply energy conversion from one form into sound.

3)  What "results" do you want addressed?  I have said I am willing to discuss further.  I'm waiting for you to bring something up.  Like I have said, resonance is really neat.  But it also has never been shown to create energy, so I am not sure what aspect you want to discuss.  I'm also not sure what you would become suspicious of.

You asked a question in the subject of this thread.  I have answered it as best I can (as have several others).  This was in the spirit of helping you learn the answer to your question.  No other "ulterior motive".

M.

Observer,

I'm not sure a second tower would be necessary, or if a multitude of towers would.  Sometimes I wonder if it was just to be as simple as transferring energy between two coils, like a transformer without a core, but at a distance.  So any coil tuned to the correct frequency would be able to pick up power if within reasonable range of the tower.  But then again I wonder if the frequency he was working with was attempting to use the Earth itself as part of the resonant circuit, effectively increasing the range as well.

Here is the thing with Resonance:  You only get out what you put in.  Resonance is simply a way of trapping the first impulse of an energy wave somewhat and then adding the second and third to it.  So it actually takes time to build up.  Usually this is so fast that you do not notice it.  It is like if you yell into an echo canyon.  Then when the echo comes back you yell again.  So the echo and your second yell add together to produce a louder volume.  But only on that second cycle.  The first wave was not louder.  And the energy of the second louder yell + echo is no greater than the two individual ones.

Set up and tune any resonant system, including your latest water chamber one.  Turn it off and let everything settle.  Now turn it on and accurately record the results (so that you can see the first dozen or so cycles stretched out).  You will find that the sound starts with a low volume, as if the resonant system is not there.  It then builds with every cycle to a maximum amplitude where the losses equal the energy added each cycle.  This is the case with the acoustic guitar as well.  Each note actually builds in volume from the initial pluck as the resonant "echos" reinforce it.

You can increase the voltage of an electrical signal by using a transformer.  Voltage goes up, but current goes down.  Also, you can trap an electrical signal in a resonant tank circuit and let it build up tremendous amounts of energy.  But in the end, the energy in the circuit is never more than the sum of the energy in each cycle that was input.  These effects are analogous to what you see with your experiments with acoustic resonance.  Energy is not created.  It is only stored up and released at a larger amplitude.  With the case of the guitar you trade volume for sustain.  IE, if you do not bleed the energy in a plucked string by making sound, it will ring longer (the electric guitar).  Bleed the energy in the plucked string to make sound (the acoustic guitar), and it will ring for shorter.

"Amplification" does not have to mean an increase of energy.  Adding energy is only one way to amplify a sound or signal.  Amplify has several meanings, and one is simply to "make louder".  This can be accomplished many ways.  It can be as simple as adding a sound board element to convert mechanical vibration into sound waves.  It can be more complex, by adding resonant elements that reinforce each cycle and build the volume similar to the echo canyon example.  The authors use correct but different meanings of the word "amplification" throughout those Wikipedia articles.  Unfortunately you have to grasp which definition of "amplification" the author means with each use from context.

Thought experiment:  Which will ring longer, an electric guitar string or an acoustic guitar string if both are in a vacuum?

M.

Hello,

I had never really looked at the Lee-Tseung Lead Out Theory much til it snowed the other day.

                                   In the the First Post ! the basis of the theory is stated.

The Lee-Tseung theory predicts that both gravitational and electron motion energy can be Lead Out
 via Pulse Force at Resonance on oscillating, vibrating, rotating or flux change systems.

Wow... Forced Resonance... my Passion !
Now I know there is at least 1 other person who hears the Acoustic Guitar as I do. ;o)
                 If you are wondering, I think that an Acoustic Guitar is Louder and rings Longer than and Electric.
                Actually I know this... One of the few apparently !

Looks like Lee-Tsueng is a bit farther than me on the path of investigating Resonance.

                                            As I am to the point... of just pointing at the extra energy due to Resonance and thinking " hmm."

With Great Appreciation I Thank Lee, Tseung and the other Brilliant Chinese who have investigated this.

The Observer