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Old January 3rd 08, 05:21 AM posted to rec.radio.amateur.antenna
art art is offline
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First recorded activity by RadioBanter: Sep 2006
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Default Standing-Wave Current vs Traveling-Wave Current

On 2 Jan, 20:18, Cecil Moore wrote:
Roy Lewallen wrote:
* 2. I don't understand the mechanism which causes waves to bounce.


I don't understand the mechanism which causes waves to slosh.
Would you mind posting the sloshing equation?
--
73, Cecil *http://www.w5dxp.com


Cecil,
All of the bickering come to a halt if you consider a full wave
radiator
instead of a half wave antenna. Yes, both can be resonant but only
one is in a state of equilibrium. The underpinnings of all laws
whether
mechanical or electrical is that all is in a state of equilibrium
otherwise the laws do not apply.
When there is a state of equilibrium one cannot have a collision of
waves.
The sequence for equilibrium is a magnetic field followed by a
electric field
which equals one period. Sloshing is a poor word. When current is
moving forward
you are charging up the `capacitor when the current changes direction
the capacitor
discharges as if it was shorted and creates a near instantaneous
electrostatic field
which dissapates while charging up the inductance which is also the
transition of
generating a magnetic field around the inductance.
During this time there is also a side ways force that affects or
depletes the current
by deflection which allows for propagation.This force is what is
termed "curl"
amongst many other names
At no time are there any counter waves because, not only are we
resonant but
we are also in a state of equilibrium. Move away from a fractional
wavelength
to a full wave length so both sides starts from a common point ie
resonant
and in a state of equilibrium and your difference will then be
resolved quickly.
Hope the above helps to stop posters from talking past each other.
My best regards
Art Unwin KB9MZ....XG(UK)