On Sep 17, 10:40*pm, wrote:
On Sep 17, 6:16*pm, "Frank" wrote:
In direct terms I have stated that current flows down the
center
of a radiator if it is of a fractional wave length. A very simple
statement which nobody wishes to address. Fine by me, the thread would
then have a single posting and the multitude can generate questions
and discussion about deep space or other topics of choice.
Severns, QEX, Nov/Dec 2000, pp 20-29 does address the issue.
On page 22: "At some points within the wire, the instantaneous current is
actually flowing backwards (minus signs) due to the self-induced
eddy currents that are the underlying phenomena responsible for skin
effect."
These results were verified with Ansoft's "Maxwell" FEM software.
An excellent treatment of the math can be found at:http://www.g3ynh.info/zdocs/comps/zint.html
Frank
What is the frequency of the currents flowing backwards? If the same
as forward current (which it would be), then that and a few other
attributes such as conductor size, resistivity and mu, I can give you
skin depth by simple subtraction of the forward/reverse current
vectors. However, it will not necessarily indicate indicate that some/
no current flows in the center....it depends on the above variables.
At lower frequencies, a certain proportion of the current distribution
may occupy the center if the conductor is thin enough.
No Im not going that direction. Visulise a salvage yard that use
magnetic
fields on a conveyor which produces a collision of magnetic fields
which
levitates artucles made of aluminum such that it falls in a selected
container
the ejection being created by the foucault or eddy current.
Now look at that same conveyor belt as a antenna or radiator upon
which particles are at rest.I easily can visualise
the same action as a replica of a antenna with particles at rest since
Gaussian law of statics when extended equals maxwells law
Thus equilibrium and the presence of particles I take as a given. Also
by viewing the Gaussian field one can determine that a radiator
can be any size shape or elevation as long as the arrangement in
equilibrium. This points away from planar designs as well as the final
arrangement must not posses external lumped loads as maxwell provides
no place for them. In a way I am working backwards that render the
eddy force as the weak force
of the four forces of the standard model. Placing a verticle antenna
in a computor program without leaning it to a planar design and the
resulting radiator
shows the angle and magnitude of the "weak" force according to
Maxwells laws upon which the program is founded. This weak force is
thus appearing as the pitch of a helix antenna which confirmes the
reasoning against straight planar antennas. As far as how the static
particle obtained its own magnetic field I assume that exposure to the
earths magnetic field left a residue of thst immersion which is the
other field on the conveyor belt. Since the ejection of the partical
must be of a straight line projection the combination of the two
magnetic fields will provide that spin and where the reaction to the
ejection creates a vivration on the radiator as with the human ear
bone with the reverse acting on the receiving antenna. The particle
chose diamagnetic material to rest upon because as an free electron it
will not be absorbed in the matrix of other materials. Now that is in
laymans language based upon the salvage actions in use today as well
as non destructive material measurements which appear to be a
duplicate of the antenna function. Yes it is a woven dialogue but it
does duplicate functions in use that are not theoretical and for me
matches perfectly. I don't see how I can explain my thoughts any
better to avoid
the implication that it is all blabber since to me it explaind
radiation in detail where it does not appear as a mystery.
unfortunately hams will not follow in detail my reasoningas emotion
rules their responses and where they then introduce other areas of
science that was not present in the initial reasoning
and thus make me an easy mark for derision. So stick with my reasoning
and break it apart piece by piece scientifically to show my resoning
produces
an impossibility. I might add that nobody accepts that the addition of
a radiator and a time varying field produces a dynamic field which
mathematically
reflects Maxwells laws which if they are correct tears my reasoning
apart . I know it is very hard to follow and leaving many places to
laugh at.
I also placed a helix antenna in euilibrium and without external
lumped loads which produces a pattern of gun shot form whigch again I
expected with a gain of around 10dbi. Go figure
Art