On May 10, 6:58*am, JIMMIE wrote:
On May 9, 3:24*am, Szczepan Białek wrote:
*"JIMMIE" ...
On May 8, 4:51 am, Szczepan Bia³ek wrote:
It seems that at long distances should appear the phenomenon of frequency
doubling.
See:http://www.rp-photonics.com/frequency_doubling.html
Is such?
S*
The laser must be fed into a non-linear medium for the doubling to
occur. The same would be true for RF.Normally the atmosphere and space
are considered fairly linear in respect to *both RF and light, both
forms of EM radiation. Luckily *for us this is the case, otherwise all
radiation would be multipled to xrays and beyound. *The result would
probablybe the termination of all life as we know it.
Very interesting.
May be it take place. You do not analse the intensity after each doubling.
My question apply to the two sources emitters (oscillatig dipole) in a
lineaar medium.
S*
The presence of a non linear medium is always required for frequency
doubling. The only part of the atmoshere that I know of that meets the
qualification is the ionosphere which contains plasma which could act
as a nonlinear medium. I suppose that if the signal were powerful
enough to produce ionization that a frequency could be doubled..
Jimmie
Hi,
Let me help you with your problem.
You mentioned a cycle which you know is equal to a period or
occillation of a radio wave. Let us say that an antenna charges up and
then radiates ie half the time or occillation for each action. Now you
have decided to apply power to a half wave antenna asnd not a full
wave antenna that is occupied in some action all of the time period.
Now you have to decide what your half wave antenna is going to do.
Charge up only and let the power leak away or radiate without having
any power!
What you have to do is to imagine a radiator as a tank circuit where
you have two energy storage areas, a inductor and a capacitor and for
the mom ent free from losses.
Thus the energy loads up the inductor which then empties into the
capacitor which in turn empties back into the inductor e.t.c Thus only
one charge is supplied and no more since the same charge is really not
being let go!
This is seen as perpetual motion which is an impossibility. Thus if
energy is going to be used it will only be expended for half a cycle
and then the circuit recharges for the next cycle. Now you should be
able to see that a half wave antenna is only capable of working half
the time so in no way can you be applying a doubling of frequency
motion when you only have a half wave antenna to work with. So S* go
back to your study but first replace your half wave antenna and re
think things out with a full wave antenna in loop form with a tank
circuit in mind and when you have all things in place
substitute your half wave antenna and determine what this does to you
tank circuit and radiation.