"Szczepan Bialek" wrote in message
.. .

A dipole with one ene earthed becomes a monopole.
Hertz transmitter is a dipole. The Tesla's is a monopole.
Todays dipoles are simply the two monopoles.
Thanks this the waves are polarized.

But the question is if Marconi was right:"
"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."

Best regards,
S*
Hello Szczepan.
A dipole with one end earthed wouldn't be a monopole.
http://en.wikipedia.org/wiki/Dipole_antenna
http://en.wikipedia.org/wiki/Monopole_antenna

Best wishes, Ian.