"christofire" wrote
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"Szczepan Białek" wrote in message
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"Mike Coslo" wrote
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Art is trying to convince us that EM energy is also a mechanical force,
consisting of particles that fly off the end of our antennas like little
turds. The ramifications of that means that everything we thought we
know about RF - and in fact all physics is completely wrong.
You have made a small mistake. Antennas are feed with the oscillating
voltage. So the little truds fly off and come back. It is normal
longitudinal wave.
The key problem is what radiate: the end of an antenna or something else.
What do you think?
S*
No, you've made a mistake ... again. EM waves are transverse waves in air
(i.e. around a normal antenna) not longitudinal waves (see
http://en.wikipedia.org/wiki/Longitudinal_wave).
EM waves by Maxwell are transverse waves. They are the paper waves. The real
electric waves are mainly longitudinal.
Sound waves are longitudinal because air pressure is a scalar, whereas
electric and magnetic fields are vectors - they have polarisation.
The math has not to do here.
Here is the full acoustic analogy. The two loudspeakers work like the two
monopoles.
Also, antennas that radiate are fed with alternating current. The
terminal voltage is almost immaterial in comparison with the current -
that's what causes the radiation.
If you want to discover what radiates I suggest you read one of the normal
text books on the subject, like Kraus 'Antennas', and stop making up your
own versions!
To discower what radiates will be better to do experiments with tipping of
monopole antenas.
S*