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RE: About wireless energy transfer
Original poster: "David Thomson" <dwt@xxxxxxxxxxxx>
> "The basis of this method is that two same-frequency resonant
> circuits tend to couple, while interacting weakly with other
> non-resonant elements." If they intended to give ANY recognition to
> Tesla and had done ANY serious research about "prior art" they would
> have added something like "as demonstrated on a large scale by Tesla
> in his Colorado Springs experiments in 1899". Obviously they had NO
> idea of Tesla's ideas or the extent of his efforts.
I had picked this up on my first reading, as I had mentioned on another
list. I'm glad we agree here. Soljacic is proposing with photons exactly
what Tesla did with electrons.
I further agree that Soljacic does not have a good understanding of Tesla's
work. Otherwise, as you state, he would have given more credit to Tesla.
However, Jim stated that Tesla wasn't mentioned in the articles. I stated
that is only fair to point out that Soljacic did mention Tesla in his paper.
You are turning this into an opportunity to rant on something that was not
said, namely that Soljacic has any understanding of what Tesla actually did.
> I just did a quick check to see what is in some of my earlier
> "wireless" reference books. Zenneck's "Wireless Telegraphy",
> originally published in 1906, has an extensive discussion. Pierce's
> "ELECTRIC OSCILLATIONS AND ELECTRIC WAVES" (1920) devotes six
> chapters to the subject of "The free oscillation of two coupled
> resistanceless circuits", discusses in considerable detail and in
> more familiar terms their "eigenmodes of the combined system" and
> gives many references to the subject dated before 1900. The first is
> Lord Rayleigh's "Theory of Sound" which I don't own. I'd be willing
> to bet he mentioned coupling between resonant acoustic devices.
Thank you for mentioning this reference. As you are likely aware, Tesla
mentioned the similarity of his wireless transmission system to that of
sound waves. That is exactly how I designed my wireless transmitter,
building it according to acoustic properties; except that instead of
longitudinally oscillating air molecules, I will be longitudinally
oscillating electrons. The extra coil is the musical Helmholtz resonator
and the Earth ground is the auditorium.
Unlike the extra coils designed by others on this list, my extra coil is
completely sealed at the top load. The coil windings and top load are
completely immersed in oil and encapsulated in PVC to prevent electrons from
leaking. The top of the coil is shielded with a concentric sphere and
hemisphere (ala Wardencliffe) and grounded. Most photons radiating from the
top load will be picked up and returned to the ground as electrons via the
My receivers are simple coils tuned to the same frequency as the extra coil.
One of the receivers is a flyback transformer, which coincidentally has a
resonance within 4 kHz of the extra coil. I will have the flyback
transformer located about 50 feet from the extra coil and connected to a
multi-channel HP34970A DAQ switch. This way I can record the power
transmission results without guesswork.
> In summary, except perhaps for their discussion on dielectric
> resonators, there's nothing new here [Soljacic's proposal] except the
> obscure terminology and beautiful pictures.
I agree on these points.