Szczepan Bialek wrote:

napisa? w wiadomo?ci
...
Szczepan Bialek wrote:


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

No.

This depicts electorstatic fields; antennas radiate electromagnetic
fields, so your question makes no sense.

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?

It makes no difference what the antenna looks like as the only property
that matters is its ability to convert AC electrical energy at the input
frequency to electromagnetic radiation.

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?

No.

An antenna is a device that converts the AC electrical energy at its
teminals into electromagnetic energy which radiates from the antenna
and also coverts the electromagnetic energy which antenna intercepts
into AC electrical energy at it's terminals.

Do you wear slip on shoes?