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Old September 14th 09, 09:10 AM posted to rec.radio.amateur.antenna
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Default Spherical radiation pattern


"Richard Harrison" wrote
...
Art wrote:
"Thus if we have a radiator of one WL that is tipped in space and near
zero resistance in impedance metric we will then attain a spherical
radiation pattern with Poynting`s vector and thus a demonsration of
point radiation together with further evidence that radiation is of
particle and not of waves."

No matter how Art`s words were combined, I don`t see in them any such
evidence. Even Art agrees that Maxwell`s equations correctly produce
answers to where the energy goes.

The 1955 edition of Terman`s "Electronic and Radio Engineering" shows
the radiation pattern of one WL of wire in Fig. 23-4 (b) on page 867. It
consists of four lobes each making an angle of 54 degrees with the axis
of the wire. The pattern deviates from a spherical pattern by a lot. So
much for "equilibrium"!

Cecil pointed out that in physics, electromagnetic radiation is treated
with duality, using either particle theory or waves, whichever is more
convenient for the problem at hand.

Maxwell solved the problems of radiation using wave equations which are
said to be four of the most influential equations in science.


"Heaviside said that mathematics was an experimental
science. He organised Maxwell's mathematical work into the four equations
which we now call "Maxwell's Equations".

Maxwell made model of solid etherWhat is Heaviside's model like?

On page 864 of Terman`s 1955 opus he writes:
"The laws governing such radiation are obtained by using Maxwell`s
equations to express the fields associated with the wire; when this is
done there is found to be a component, termed the radiated field, having
a strength that varies inversely with distance.

If Art would just absorb Terman`s chapter on "Antennas" I doubt he would
write such nonsense.

S*


 
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