On posting part one I finished up with a reference to a full
wavelength antenna and we need to talk about this choice of a
wavelengrh. Equilibrium comes from Newtons laws where force equals
reaction force or upthrust equals down thrust where all forces around
a point equals zero. All the masters such as Faraday,Gauss and others
based all their discoveries around this notion.. In the last century a
frenchman saw this as a period in a occillation of a repetitive nature
as being the point where a cycle of events begin again. In other words
a full cycle was completed and another cycle started. This Frenchman
by the name of Foucault built a large, long pendulum in terms of a
hundred feet to deetermine the time of one sequence of events that
signifies equilibrium.
To his surprise the pendulum not only swung left to right and back it
also moved rotaed about the center a slight degree. This meant that
there was another force, a rotational force must be at work over and
above the two dimensional swing and thus for true equilibrium a period
is many times a single to and fro movement.
Thisw is analagous to our year system of time where every four years
we add a correction to the period of time
by summing all these slight incorrection of time as a full day in what
we term as a leap year.
This is the reason for the choice of a full wavelength radiatorl since
it represents a single oscillation of its harmonics PLUS this small
extra force required to meet equilibrium. Stated another way, this is
the force that is missing when the amplitude of a oscillation does not
quite reach the amplitude of the previous oscillation.
Foucault also went on and discovered "eddy current" which is a
reactionary current to any initial current as
predicted by Newton This is a very important factor in the design of
transformers i.e. laminar flow. What Foucault found that the initial
time varying current in a conducting member produces a magnetic field
and then produced a counter current that produced another magnetic
field in opposition to the intiating field!
This opposing field was very smal in energy content and normally is of
no consequence in our dealing with electro magnetics since it is
easily swamped by the initial magnetic field. But Foucault found that
if the conductor was a diamagnetic material with high conductivity its
effect became more visiable when the current was alternating at a high
frequency and it came to be that this counter field represented the
same energy that was lost from one occilation to another of a
radiator .This force some times called the WEAK force must be added or
included in any oscillation such that equilibrium is achieved. Thus
equilibrium is an important factor in our universe and like leap year
we have to add this force whether it is frictional or otherwise to
acceed to Newtons law. and since a wavelength equals on period or
oscillation I also must retain this force for balance or equilibrium
reasons
I will stop at this point so one can really get to grips on the term
equilibrium or balance which if not present
would hurl our Universe to places unknown because of its loss of
stablisation The above is extremely important with respect to
radiation because this same secondary current that supplies a
secondary field is in direct opposition to the Neutrinos field sitting
on the same conductor with a very small magnetic field of an opposite
nature and where the battle begins with respect to radiation.
Please. please get a full understanding of the meaning of equilibrium
before we get to the next part
Note Most books on this subject ignore this very tiny force as
immaterial with respect to the scale of other forces involved
This allows them to basically deduce that an effecient radiator must
be at right angles to the earths surface IF and only IF this small
force known as the weak force is ommitted from their calculations.
If it is included to meet the laws of Newton and to be in equilibrium
the weak force shows its presence by tilting the radiator relative to
Earth.( More on this later)
Art Unwin
Unwinantennas.com/ .