On Sep 24, 2:35*am, Szczepan Bia³ek wrote:

I am here to collect the arguments that EM is useless. So I am interested
only in troubles in explanation of antennas behaviour.

Suggest that you gather, study and accurately evaluate all such
relevant information before you decide whether or not "EM is useless."

RF

"Richard Fry" wrote

On Sep 24, 2:35 am, Szczepan Bia³ek wrote:

I am here to collect the arguments that EM is useless. So I am interested
only in troubles in explanation of antennas behaviour.

Suggest that you gather, study and accurately evaluate all such
relevant information before you decide whether or not "EM is useless."

Maxwell was the genius Such are almost always right. He assumed that
electricity is the incompressible massless fluid. But up to now nobody has
isolated the pure electricity. We use only the charged bodies. The electrons
are also like charged bodies. They have mass. EM was made for space. We here
analyse the electrons in the conductors. If electrons are not a pure
electricity when the EM is useless for conductors. Maxwell wrote the
"Treatise on electricity and magnetism" not "Electrodynamics of charged
bodies".
It seems that EM is useless for antennas. I do not know what is in space.
May be that there EM is usefull.
How do you see it?
S*

Szczepan Białek wrote:

Maxwell was the genius Such are almost always right. He assumed that
electricity is the incompressible massless fluid. But up to now nobody has
isolated the pure electricity. We use only the charged bodies. The electrons
are also like charged bodies. They have mass. EM was made for space. We here
analyse the electrons in the conductors. If electrons are not a pure
electricity when the EM is useless for conductors. Maxwell wrote the
"Treatise on electricity and magnetism" not "Electrodynamics of charged
bodies".
It seems that EM is useless for antennas. I do not know what is in space.
May be that there EM is usefull.
How do you see it?
S*

That everything you post is childish gibberish.


--
Jim Pennino

Remove .spam.sux to reply.

Szczepan Bia³ek wrote:
It seems that EM is useless for antennas. I do not know what is in
space. May be that there EM is usefull.

EM (photonic) waves travel at the speed of light in the medium.
EM (photonic) waves do not travel inside conductors. EM (photonic)
waves travel in space near to the surface of a conductor. For an
HF wire antenna, the photonic waves travel in the space surrounding
the wire and some is radiated. For a wire transmission line, the
fields of the photonic waves tend to cancel and not much is radiated.
For a wave guide, the photonic waves travel in the space on the
inside of the wave guide and very little energy escapes the conductive
sides of the wave guide.

The purpose of using a conductor with free electrons is that the
free electrons are capable of emitting EM waves in the form of
photons.

1. Without the photons, there would be no radiation.

2. Without the free electrons, there would be no photons.

3. Without the metal conductor, there would be no free electrons.

It is a very simple cause and effect chain from the aluminum or
copper antenna to the release of photons as radiation. I think
my 12 year old grandson could understand the principles involved.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com