[Physics] Do longitudinal FTL "Tesla" waves exist and, if yes, how should they be modelled?

[Arend Lammertink]

Oh yes, almost forgot.

Should we get this far, we have a _really_ nice instrument at our disposal, too:

https://en.wikipedia.org/wiki/Dwingeloo_Radio_Observatory

"As of 2000, it was no longer in operation in an official capacity.
Since August 2009, the radio telescope has been a national heritage
site (rijksmonument). The telescope dish was removed for restoration
in June 2012. The "C.A. Muller Radio Astronomy Station" foundation
("CAMRAS" for short) restored the telescope to working order. The dish
was remounted in November 2012.

Paul Boven (Joint Institute for VLBI in Europe (JIVE), CAMRAS), along
with radio amateurs and amateur astronomers, use the telescope for
projects, one being Earth–Moon–Earth communication, also known as
moonbounce, which allows for people on different parts of Earth to
communicate via the Moon. In this technique, radio wave signals are
aimed at the Moon by one location, bounce off the Moon's surface, and
are detected by an antenna at a different location on Earth."

I know one of the radio amateurs who operates the thing and has an EME
dish at home as well of about 3m diameter, IIRC.   The Dwingeloo dish
has a diameter of 25 m. :)

https://en.wikipedia.org/wiki/Earth–Moon–Earth_communication

"Radio waves propagate in vacuum at the speed of light c, exactly
299,792,458 m/s. Propagation time to the Moon and back ranges from 2.4
to 2.7 seconds, with an average of 2.56 seconds (distance from Earth
to the Moon is 384,400 km)."

How about a longitudinal moonbounce with that toy?

Return trip should be about 1.6 seconds, or about 1 second faster. :)

However, I don't know if this would be feasible, because I don't know
yet whether or not longitudinal waves reflect on a metal maze.

Nonetheless, have been dreaming about this since 2011. May be one day...

-- Arend --




On Thu, Apr 30, 2020 at 8:14 PM Arend Lammertink <lamare at gmail.com> wrote:
>
> On Thu, Apr 30, 2020 at 1:31 PM Arend Lammertink <lamare at gmail.com> wrote:
> >
> > On Thu, Apr 30, 2020 at 9:23 AM Ilja Schmelzer <ilja.schmelzer at gmail.com> wrote:
> > >
> > > 2020-04-29 17:04 GMT+06:30, Arend Lammertink <lamare at gmail.com>:
> > > > On Wed, Apr 29, 2020 at 4:09 AM Ilja Schmelzer <ilja.schmelzer at gmail.com> wrote:
>
> > > Up to now, I see no nice way how you can
> > > reach this. If you simply remove the dB/dt term from the Maxwell
> > > equations, you destroy them too.
> >
> > Nope, one _allows_ all possible harmonic (wave) equations, rather than
> > _reducing_ the number of possible solutions to only one: the Hertzian
> > transverse wave.
> >
> > What the dB/dt term does, essentially, is to artificially tie the
> > rotational field [B] to the compressible field [E] in a very specific
> > way. Remember my claim a real transverse wave is a combination of
> > vortices and a longitudinal wave?
> >
> > https://www.acs.psu.edu/drussell/Demos/waves/wavemotion.html
> >
> > See that in the transverse wave the rotational field [B] is tied to
> > the compressible field [E] in a very specific way?
>
> Should have been more clearly here. The "real" "real" transverse wave
> can only occur in solids.
>
> The 'waterwave' on that link is what I normally think of as a "real"
> transverse surface wave in comparison to electrodynamics. So, that's
> the one actually predicted by Maxwell, whereby the consituents within
> the fluid move in circles, which also has a compression/decompression
> effect aka a longitudinal wave. Rayleigh surface waves are also
> possible, I believe. I believe to have read about those, but I'm not
> certain from the back of my head.
>
> And this is perhaps the biggest advantage of our model - essentially
> Paul's theory combined with the bug I found and quite a lot left on
> the "to do" list - namely that it's very easy to use analogs to make
> one's point, as Maxwell dit .  Every phenomenon that can be described
> or experimentally shown to occur in a gas or fluid can also occur in
> the medium.
>
> Just different speeds, scale and parameters.
>
> Very handy for a visually thinking autist like me. :)
>
> >
> > Remember, potential fields are well known within FD, even though not
> > fully developed yet. It is the exact same math, except for the dB/dt
> > term....
> >
>
> Best regards,
>
> Arend.