Thanks for the posting Richard

I concede.....

I had thought that the 'too and fro' of the 'coupling'
would have continued after energy was turned off,
like an ever changing EMF until final decrement.
If this were true then I am sure an expert
would have piped up. Since they didn't think the
same way the energy decay (Current flow) must have been
'instantaneous'
As I am not going to try for a ELECTRICAL degree
as suggested ( O.K. I am a wimp )I am resigned to
falling down a few times if I wish to move forward.
At my age I don't get to move that fast anyway
Best Regards
Art




(Richard Harrison) wrote in message ...
Art Unwin, KB9MZ wrote:
"The question ....Could it oscillate under ideal conditions? Yes or no."

A tuned loop can not "oscillate", that is, to continue repeating a cycle
of motions with strict periodicity, if it does not have a continuing
supply of the resonant frequency.

Analogies pose problems, but a resonant device responds to a particular
frequency and ignores others. A resonant-reed low-frequency indicator is
a vivid analogy of a collection of tuned circuits. Only the resonant
reed responds to excitation which is applied to all of the reeds.
Likewise, a resonant loop must be excited at its resonant frequency to
accept and re-radiate energy. A collection of dipoles and loops may be
exposed to r-f. If one of the collection is resonant, it accepts energy
and re-radiates.

A common inference from the word oscillation is production of continuous
waves. The device making the oscillation is called an oscillator. I`ve
seen loops and I`ve seen oscillators, and a loop without an active
circuit is no oscillator.

Best regards, Richard Harrison, KB5WZI