On 26 Dec, 21:33, "AI4QJ" wrote:
"AI4QJ" wrote in message

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"art" wrote in message
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" To me, this suggests that the return path is
down the center which is resistive only. My prior post
states that it is possible for current flow down the
center of a dimagnetic material which was the case
in a barium cloud.
From the above in then becomes logical that RADIATING
surface length is what counts and thus a helical antenna
must have a counter winding to be resonant AND in equilibrium.
So the main pont is, what exactly stops current travel down
the center of a radiator to conform with every day thinking?"

At AC, it is established knowledge that skin effect takes place in round
diamagnetic conductors such as copper and aluminum. Skin effect happens as
a result of Lentz's law. From Lentz's law, foucault currents are set up to
oppose the magnetic field of the AC current sent by the generator. The
result is net forward current existing on the 'skin' of the conductor with
a net reverse current inside the conductor. Think of the inside of the
conductor as being occuppied by a current moving back towards the
generator that sets up a magnetic field which opposes the magnetic field
from the AC current sent by the generator. So you can see that indeed
there is current flow through the center of the conductor; it will be a
weak current but it is nature's attempt to oppose the change in magnetic
field. I think the situation you are speaking to is having additional
currents through the center that are additive (or subtractive) to the
foucault currents. With proper material selection (such as mu-metal, a
magnetic material of very high permeability), it may be possible to
maximize the foucault currents themselves to nearly cancel the applied
magnetic field ( from the current in the generator). I believe it would be
truely a pioneering effort to have center currents above and beyond this
value, or cancelled, or even reversed. I would never say that it was
impossible; after all, what is mu-metal but a material engineered and
manufactured by man to increase its permeability several times and which
has the effect of greatly reducing skin depth several times, thus allowing
for maximum foucault currents even at low frequencies. Could this occur
with diamagnetic materials as well? I will not say no. *I am not sure if
it has ever been tried. Could the complete mitigation of skin effect
increase the velocity factor close to c in a vacuum? Maybe. What if you
could actually reverse the skin effect? That gets into the things you are
thinking about, i.e, smaller antennas. This is well outside the normal
scope of thought but it is interesting to consider the 'what ifs' and that
sort of thing does not violate Maxwell, it merely extends the
applicability of Maxwell, Lentz etc..

snip
Please help me out here as I am obviously missing something.
I am referring to a full wave radiator of a dimagnetic material
operating in tank circuit form. During a portion of the cycle
we have eddy currents due to the magnetic field. This magnetic field
is only around for a portion of the time because of the
nature of the material. It is what is happening during this time
that interests me since I theorise that the electric field is
levitating galactic particles. It is during this time I
am trying to understand the status of the inner core.
For instance the skin depth, isn't it changing in thickness?
Is this also producing a void of decaying electrons in the
radiating core etc when there is an absence of a magnetic field
and its absence of a eddy current? I don't want to get into
a standing wave sort of a discussion as the circumstances
appear to be unknown except what other things are at play.
When the magnetic field has dissapated, a short amount of
time before the capacitor discharges and what happens
when the capacitor discharges. I think we can say that
the internal structure of the material changes from
uniform to a random directional structure during this time.