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Old April 8th 09, 11:04 PM posted to rec.radio.amateur.antenna
Cecil Moore[_2_] Cecil Moore[_2_] is offline
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First recorded activity by RadioBanter: Mar 2007
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Jim Kelley wrote:
It's absurd to talk about waves that don't change phase, Cecil. If 'it'
does not change phase in some dimension, then 'it' is not a wave.


Yes, my point exactly and that's what a couple of my
references say - that standing waves are not waves at
all. I'm glad that we agree that a standing wave does
not meet the definition of a wave.

"College Physics", by Bueche and Hecht:
"These ... patterns are called *standing waves*, as
compared to the propagating waves considered above.
They might better not be called waves at all, since
they do not transport energy and momentum."

"Electrical Communication", by Albert:
"Such a plot of voltage is usually referred to as a
*voltage standing wave* or as a *stationary wave*.
Neither of these terms is particularly descriptive
of the phenomenon. A plot of effective values of
voltage, appearing as in Fig. 6(e), *is not a wave*
in the usual sense. However, the term "standing wave"
is in widespread use."

Please contact w7el and ask him if the total current
on a 90 degree monopole changes by 90 degrees over
its length. Please tell us what he says.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com