Użytkownik "Peter" napisał w wiadomości
...
I'm preparing an article for a local radio club magazine about the nature
of radio and electromagnetic radiation in general. While this is a non
mathematical and general descriptive treatment of the subject it is a
challenge to make it clear and consistent.
I know this group has some expertise on this subject and would appreciate
any constructive comment and suggestions regarding the attached article.
http://members.optushome.com.au/vk6ysf/vk6ysf/radio.htm
Thank you for your time.
You wrote:
"I begin to appreciate a comment made by a fellow radio amateur and
technician that antenna theory was 15% science and 85% black magic! "
But in your paper is 85% of science.
Next you wrote:
"Figure 2-3 is a simple picture of an E field detaching itself from an
antenna. (The H field will not be considered, although it is present.) In
view A the voltage is maximum and the electric field has maximum intensity.
"
That is all. Radio waves are simply the alternate electric field. You should
add only that in the and of the dipole the voltage is doubled (at least).
At the end you wrote:
"For myself, I like the humbling fact that despite building our modern
technology and economy to large degree on the manipulation of electro
magnetic radiation; when it comes to understanding exactly what in fact it
is, there still remains some uncertainty and mystery!"
Not always it was a mistery. In the radio history the radio waves were
always the electric waves.
Maxwell's hypothezis (EM) was a proposition for the transverse waves (to
explain the light polarization).
Now we can produce polarized or not polarized electric waves (by proper
arranged polarity).
Polarized light is emmited from dipoles. In nature no monopoles.
S*