"Ian" napisał w wiadomości
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"Szczepan Bialek" wrote in message
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AC of any frequency can radiate off a conductor into space as
electromagnetic waves.
The condenser also radiate?
http://educypedia.karadimov.info/lib...entstehung.gif
Now are also ULF transmitters (30Hz). So the above is not precise.
What decide that "an RF current can radiate off a conductor into
space"?
That the AC is applied to an appropriate antenna.
What the appropriate antenna looks like?
That is the purpose of an antenna, to convert AC into electromagnetic
waves.
For the third time, AC of any frequency can radiate off a conductor into
space as electromagnetic waves. There is no minimum frequency.
Is an antenna the open circuit?
S*
Hello Szczepan.
" The condenser also radiate? "
Try asking on sci.physics.electromag. If the diagram is trying to equate a
capacitor to an antenna then I'd not agree with that at all.
It is known from Hertz experiment. He used plates or balls.
Of course the plates are as on the diagram.
" What the appropriate antenna looks like?"
It would be an antenna that matches to the transmitter. You wouldn't use
an
antenna that is a mismatch as this would defeat the purpose of the
antenna.
" Is an antenna the open circuit?"
From my viewpoint it is not. "Open circuit" = "no current" and we know
that
antennas carry a current.
"Well, the antenna end, we have an Open Circuit - so the point with the
Highest Voltage"
From:
http://www.telecomhall.com/what-is-antenna.aspx
S*