Contrary current flow within a radiator
 

Cecil Moore wrote:
Michael Coslo wrote:
Just a little thought experiment.

Something else that I have wondered about:
Given a threaded rod with about double the surface
area of a piece of tubing, does the VF decrease?
Can a threaded rod be used to decrease the length
of a resonant vertical?

hmmm, interesting thought. I know where I can get a 8 foot threaded rod
of the same diameter as a solid rod. Maybe an experiment in the works.

- 73 de Mike N3LI -

Contrary current flow within a radiator
 

On Jan 30, 2:10*pm, "Dave" wrote:
"Art Unwin" wrote in message

...
On Jan 30, 12:23 pm, Michael Coslo wrote:

If eddy current is not present then radiation cannot occur,
thus all is not known about radiation !

eddy currents needed for radiation, now that is a good one. *do the eddy
currents do the levitating of the magical diamagnetic neutrinos?

Frankly I would like to know of another situation where energy flows
in the absence of a completed circuit which would provide more insight
of the circuitry of a fractional wavelength antenna, as the existing
explanation appears to be a bit to glib

lets see:
1. energy flows from a flame, but not back into it
2. electromagnetic waves carry energy but don't need a complete circuit
3. sound waves carry energy but don't make a complete circuit
4. water waves carry energy but don't make a complete circuit
5. magical diamagnetic levitating neutrinos flow out from the sun and carry
energy but never go back... actually a whole bunch of charged and uncharged
particles flow out from the sun in the solar wind and never go back.

No David
Can you point to another example where a circuit flows back on itself
as proposed by this group. All of the above provides a complete
circuit because of Newtons law but none of them retrace the forward
path. I always thought that all electrical circuits are closed. As for
eddy currents how else are you going to inpart spin on a particle?
It is done this way in all metal scrap sorting yards so you need to
learn how to google so you can catch up with everybody else. Now if
they do not take advantage of levitation methods via eddy currents I
would be interested on your take of that process
without retracing a path was some sort of rule of thumb

Contrary current flow within a radiator
 

"Art Unwin" wrote in message
...
Can you point to another example where a circuit flows back on itself
as proposed by this group.

as proposed by you... your magical levitating diamagnetic neutrinos flow out
from the sun, but how do they ever get back if they get stuck on the
diamagnetic materials that you use for your magical antennas?

Contrary current flow within a radiator
 

On Jan 30, 7:24*pm, "Dave" wrote:
"Art Unwin" wrote in message

...

Can you point to another example where a circuit flows back on itself
as proposed by this group.

as proposed by you... your magical levitating diamagnetic neutrinos flow out
from the sun, but how do they ever get back if they get stuck on the
diamagnetic materials that you use for your magical antennas?

oh my, and you are writing a book?

Contrary current flow within a radiator
 

On Fri, 30 Jan 2009 11:00:43 -0500, Michael Coslo
wrote:

This question may have been asked before, but is there a physical
experiment that is good for verifying skin effect?

and then later on (following some rather arcane metaphysical
theories):

On Fri, 30 Jan 2009 16:06:47 -0500, Michael Coslo
wrote:

hmmm, interesting thought. I know where I can get a 8 foot threaded rod
of the same diameter as a solid rod. Maybe an experiment in the works.

Hi Mike,

Measure the DC resistance and compare to the rather simple formula
that exists in any textbook that Art has spit on. I bet the
measurement agrees with the computation to within several percent.

Measure the AC resistance at a suitably high frequency. How much is
it a portion of the DC resistance?

Measure the AC resistance at a suitably higher frequency. How much is
it a portion of the DC resistance? Does that portion equal the bulk
conductive volume of the thread alone? If not, raise the frequency
some more until it does.

The threaded rod is rather an elaborate red-herring because you can do
the same thing with smooth wire, rod, plate, tube - choose what you
will, the volume of conductivity will be indicated by the change in
resistance.

Want to prove it is conducting only on the exterior surface?
Substitute equal diameter tube for solid rod and perform the same
three measurements above. If current cannot return back down the
inside, Resistance should climb astronomically (say by bumping the DC
frequency to 0.0001 Hz?)

73's
Richard Clark, KB7QHC

Contrary current flow within a radiator
 

"Art Unwin" wrote in message
...
On Jan 30, 7:24 pm, "Dave" wrote:

oh my, and you are writing a book?

i already have. just published the 2nd edition. of course you wouldn't be
interested since everything in books must be wrong.

Contrary current flow within a radiator
 

On Jan 31, 6:45*am, "Dave" wrote:
"Art Unwin" wrote in message

...
On Jan 30, 7:24 pm, "Dave" wrote:

oh my, and you are writing a book?

i already have. *just published the 2nd edition. *of course you wouldn't be
interested since everything in books must be wrong.

2nd Edition?
Well congratulations to you
Art

Contrary current flow within a radiator
 

This question may have been asked before, but is there a physical
experiment that is good for verifying skin effect?
Measure the AC resistance at a suitably high frequency. How much is
it a portion of the DC resistance?

Just as I thought. An obvious method that quickly snuffs the growth
of grandiose patent claim enumerators.

If anyone can do it, you can't patent it - if no one can understand
it, then at least your patent can use obscure terms to get it
published as a poem.

The method in the description above claims:
1. A convector of charge particels aranged in an equilibrium of
static movement such that
2. movement of the equilibrated gaussian enclosed particels
3. has two motions not anticipated by Newton but proved by him to be
4. equil in force
5. reflecting at termination points or not
6. moving conversely in agreement with Einstein's wave theory
7. and thus was it ever
8. amen
10. send my money

e.e.cummings (would
crack a
smile)

Contrary current flow within a radiator
 

Michael Coslo wrote:
Warning - dilletente alert! Maybe even worth an embarrassing dolt cringe

This question may have been asked before, but is there a physical
experiment that is good for verifying skin effect?

Initially, It seemed pretty straightforward, but giving some thought to
the matter indicates it "ain't necessarily so".

I'm assuming that any thick conductor is going to have "skin" to any
where I can put a sensor, so even if I drilled an internal sensor, the
drill tunnel would form a part of the skin.

Giving that some thought, is it possible to make say a ribbed conductor
that resembled a tubular heat sink, would this device allow for more
current flow because of the greater amount of skin exposed compared to a
solid tube?

yes.

Look up Litz wire..

basically the same idea

However, just because it's not physically connected doesn't mean that
the magnetic field from a rib wouldn't affect the current in the
adjacent ribs (which is what's going on with the whole skin effect
thing, anyway)..

Contrary current flow within a radiator
 

Cecil Moore wrote:
Michael Coslo wrote:
Just a little thought experiment.

Something else that I have wondered about:
Given a threaded rod with about double the surface
area of a piece of tubing, does the VF decrease?
Can a threaded rod be used to decrease the length
of a resonant vertical?

to the extent that the current is on the peaks of the threads.. in the
limit it would be like a helically loaded antenna or that funky delay
line coax with the spiral core? It would be complex to analyze, but gut
feel is no.. the threads aren't tall and skinny enough in the run of the
mill threaded rod.