Użytkownik napisał w wiadomości
...
Szczepan Bialek wrote:
"Marconi, who discovered if he attached one terminal of his transmitter
to a
wire suspended in the air and the other to the Earth, he could transmit
for
longer distances".
This has nothing to do with the question asked.
As you know are many version of ground because the soil is not the best.
The sleeve, the braid of the coax and so on are only the better ground.
Utter nonsense.
Dipole must be electrically symmetric.
If one leg is connected to the any version of ground such "dipole"
radiate
as monopole.
More babble.
You truely are an idiot.
You know only the EM waves. They "were made" by Heaviside in 1884, years
before Marconi and Tesla.
Take a glance on the Marconi Nobel lecture from 1909.
http://www.nobelprize.org/nobel_priz...ni-lecture.pdf
There (in references) no EM waves. No Heaviside. No Maxwell
Marconi wrote: "In my opinion many facts connected with the transmission of
electric
waves over great distances still await a satisfactory explanation".
Electric waves are radiated. EM is an induction.
About ground Marconi wrote:
"The necessity or utility of the earth connection has been sometimes
questioned,
but in my opinion no practical system of wireless telegraphy exists
where the instruments are not connected to earth.
By "connected to earth" I do not necessarily mean an ordinary metallic
connection as used for ordinary wire telegraphs.
The earth wire may have a condenser in series with it, or it may be
connected
to what is really equivalent, a capacity area placed close to the surface
of the ground (Fig. 4).
It is now perfectly well known that a condenser, if large enough, does not
prevent the passage of high frequency oscillations, and therefore in these
cases
the earth is for all practical purposes connected to the antennae."
Was Marconi an idiot?
S*