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Richard Clark · June 14th 08, 08:42 PM posted to rec.radio.amateur.antenna

On Sat, 14 Jun 2008 09:40:26 -0700 (PDT),
wrote:

On Jun 14, 8:46*am, "Walter Maxwell" wrote:

I don't understand how my statement in the email above indicates that I^2*R and
V*R could be zero. The simple ratio of E/I is not zero, yet it defines a
resistance that is non-dissipative because a ratio cannot dissipate power.

Walt

Hi Walt -

If E and I are not zero, then E*I is not zero. But you are correct
that the equations themselves do not dissipate power. :-) Resistors
do, however. If there isn't an actual resistor located where you make
your measurement, then of course there's no power being dissipated
there.

Hi All,

It has taken considerable restraint not to ask some pointed questions:

1. Is a metal wire wound resistor NOT a resistance because it is not
carbon?

2. Is a carbon resistor NOT a resistance because it is not metal
wire-wound?

3. Is a Tube NOT a resistance because it contains no metal?

4. Is a Tube NOT a resistance because it contains no carbon?

5. Is a cathode resistor NOT a resistance when the tube conduction is
zero?

6. Is that same cathode resistor NOT a resistance because it conducts
non-linearly for some speciously constrained (and myopically chosen)
incomplete cycle of time?

finally, and possibly the only compelling logic that seems to flow
from this thread:

7. Is a Tube NOT a resistance simply because it lacks the familiar
shape of an axial lead resistor? (Or, rather, that a familiar axial
lead resistor cannot be found soldered between cathode and plate
within the vacuum?)

I have offered a spectrum of questions guaranteed to be accessible to
the buffet style of responding to cosmetic issues instead of
substance.

As this is all Rhetoric, I will take the author's prerogative to
short-cut the anticipated sputterings of denial, condemnation,
damnation, and outrage.

1. 2. 3. and 4. Carbon is a metal.

3. and 4. Plate dissipation bears scant relation to Ohmic Loss. And
yet there is heat there that is correlatably and causally related to
match, loss, and drive - from any "source."

4. there are many power tubes with Graphite (carbon) plates. The
original 813B comes to mind. Some power tubes have their screen grids
graphite (carbon) coated too! (Ohm's law still does not appreciably
account for plate dissipation.)

5. and 6. are sucker bait for those who would prove the world is
non-linear because of the discontinuity at the time of the big-bang
(or creation, take your pick).

7. Is, as I intimated, the implicit populist choice (masked as a
question) for those who cannot say what the source resistance IS, but
are over fulsome by half to say what it is NOT.

Describing what source resistance is NOT is like moving the stacks of
brass disks between the Towers of Hanoi. You can do that forever
without really coming to any conclusion. Given the length of many
threads that imitate this behavior, its popularity marks its less than
stupendous insights. But lest I interrupt the modern interpretation
of that game as it is played here, I would point out that parsing
"ratio" is even more funny. It sure beats Brett dragging the cesspool
for newspaper reports of cures for cancer.

-Phew-

73's
Richard Clark, KB7QHC