"art" wrote in message
ups.com...
It has been stated on this antenna newsgroup that with
short antennas the current goes up the radiator and then turns back
and goes down. If this is so then it must be radiating all the time,
yes?
If a radiator is radiating all the time then the efficiency is the
same
as a full leght antenna. Yes?
This does not conform with reality Right?
So is it possible that the circuit (current)
returns along the path down the center of the radiator which is
bordered by decaying electrons which thus would prevent
radiation?
IF it was possible then radiation figures accepted by hams
would coincide with respect to short antennas. Yes?.
Then why do all the "experts" reject the notion of the circuit
continueing down the center of the radiator?
What exacly preventing such a circuit becoming a reality?
Why does current go up the radiator in the first place
knowing it has nowhere to go?
Just a silly question for the self perceived experts
Best regards and waiting in unabaited attention to responses
by the experts, as I can't find it in the books which tell all
that is known.
Your friend and eager listener
Art KB9MZ.....XG

Art

You should know better (and I should know better for responding). :-}

The signal going down the centre would cancel the
signal going up the outside and nothing would be radiated except heat due to
the electrical impedence and resistance of the antenna conductor.

What keeps the two paths separated? A simple experiment with a length of
solid copper rod and a similar length of copper water pipe will demonstrate
that what you suggest doesn't in fact happen. Both will display similar
radiation characteristics and no sign of reverse current flows down the
centre of the rod or the inside bore of the tube. The only difference in
characteristics will be caused by a difference in the outer dimensions of
the copper rod and tube. At high enough frequencies, the tube will act as a
waveguide, but that's a completely different matter altogether.

Why does a light bulb glow? How do the photons know what direction to travel
in?

If electrons are raised to a higher energy level (usually referred to as
moved to occupy a higher orbital shell) by the input of energy, after a
short period, they will return to their original energy state, emitting a
photon to carry away the excess energy. The energy of the photon being
directly in proportion to the energy input in the first place.

This has been verified repeatedly in published laboratory experiments. The
photons are
emitted at around 300,000 Km/sec at right angles from the surface of the
conductor. They don't need to 'know' which way to go or to be sucked out by
some mystic force. Neither do we need degenerate or decaying electrons to
direct the flow. An electron is an electron and nothing else. All electrons
are inherently the same. When they form part of an atom, they can absorb or
emit photons to balance the energy in the atom. The photon is not part of
the electron, it is just the manifestation of temporarily stored, excess
energy, being emitted to restore the atom back to its lowest energy state.

Mike G0ULI