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Old September 17th 08, 06:05 AM posted to rec.radio.amateur.antenna
Jeff Liebermann[_2_] Jeff Liebermann[_2_] is offline
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First recorded activity by RadioBanter: Jun 2007
Posts: 1,336
Default Equilibrium and Ham examinations

On Tue, 16 Sep 2008 17:29:08 -0700 (PDT), Art Unwin
wrote:

Well you may have hit on it. I am an englishman still in the learning
of American.


Except for a few odd terms, the kings English still works on this side
of the pond.

The law I am refering to is that every action has an opposite
reaction, not quite the words Newtons
used but the reaction is on par with the initial action. If you are in
doubt look up Newtons actual words.


You could lookup the exact quote for Newton's 3rd law.
http://en.wikipedia.org/wiki/Newton%27s_laws_of_motion
"Every action has an equal and opposite reaction."
Please note that the words "parity" and "on par" are not used anywhere
in the explanation and discussion. If you want to introduce new
physical principles, it would probably be best if you used more
conventional terminology suitable for the GUM (great unwashed masses).

Parity is what I picked up on this newsgroup so when in Rome........
Parity means the maintainance of balance
still sounds O.K. but I will not use it any more!
Art


Well, there are also online dictionaries. Try:
http://www.google.com/search?hl=en&q=define%3A+parity
None of the definitions for parity resemble whatever it is you're
trying to do, explain, or complain about.

Incidentally, the way you use Google as a dictionary is to inscribe:
define: parity
in the search box.

You also use the term equilibrium in a similar manner. Your use is
correct (to mean a type of balance) but you consistently fail to
adequately describe what is balancing against what else. Some people
may prefer your technobabble description, but if there's a balance,
there's also a corresponding equation which equates whatever it is
you're balancing. I like equations and numbers.

If you genuinely want to understand how antennas work based on first
principles, you might consider that all an antenna does is provide an
optimum transfer (match) of power between a transmitting device at
some impedance (usually 50 ohms) and the impedance of free space (377
ohms). Everything else in antenna design is controlling the direction
and efficiency of this power transfer.


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