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Old November 16th 08, 08:46 PM posted to rec.radio.amateur.antenna
Art Unwin Art Unwin is offline
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First recorded activity by RadioBanter: Mar 2008
Posts: 1,339
Default "Unwashed" hams and "washed" hams

On Nov 16, 12:09*pm, (Richard Harrison)
wrote:
Art wrote:

"This idea of waves moving along with the current flow and various other
ideas put forward by book authors seems to be a never ending attempt to
provide substance(d) to long ago thought out bad theory which would be
disrupted if current was observed to flow in the center of a radiator."

The theory is well tested and good.

Authors often write books to inform. They are paid for their efforts.

Skin effect is a fact of agreement among the scientific community. A
proof is readily at hand. Coaxial cable keeps what`s inside in and
what`s outside out.

The best exposition of "skin effect" that I know of is found in chapter
27 of "Radio-Electronic Transmission Fundamentals" by B. Whitfield
Griffith. The 1st edition was published in 1962. It was republished by
Scitech in 2006. Art would enjoy and benefit from all 638 pages.

Best regards, Richard Harrison, KB5WZI *


Oh My Richard, are you suggesting, but frightened to suggest, that
skin effect is something other than the
swirling eddy current and its negative magnetic effect on the main
magnetic field provided by the applied varying current?
Forget the constant lines of books that you have brought in to the
discussion, what exactly do you think that provides the resistive
action of
skin effect using your own 19 century smarts? On the other hand, if
you have no thoughts of your own then by all means steal an idea from
the Witfield book and share it with all of us. The fact that this old
book is being republished by the publisher is to obtain money and
should not be seen of verification of its contents. Neither should you
accept everything you read without challenge in the absence of any of
your own thinking obtained some 50 years ago.
when you had to listen to a professor so you obtain conformity with
him when the examination paper is judged by him no less?
Art
Art