in regards to
#1capacitance does not need two plates to exist or even discharge.
#2 A balloon has no plates and can be charged or discharged. So I consider it a capacitor.
Short answer:
add#1 two plates are required
add#2 balloon is just one of plates( point of charge)
Long Answer:
capacitance is the property of capacitor and it doesn't exist without capacitor.-coil has capacitance as reactive component of impedance and that is perfectly normal to say that coil is the "coil-capacitor"
-
piece of wire on the table connected to nothing has capacitance as reactive component of its own impedance
and that is perfectly normal to say that coil is the "coil-capacitor" and Yes it can resonate.
All depends from value of its reactive capacitive component : capacitive reactance at given frequency.
By that the vertical dipole antenna in your car can receive FM radio stations if it is in resonance,that means the two of dipole antenna reactive components
the
-inductive reactance
and
-CAPACITIVE REACTANCE
CANCELS ITSELF AS THEY ARE EQUAL IN MAGNITUDE-but opposite one to another
the only what is left at that point is resistive component that exists all the time despite the fact of us dealing with DC or AC.
So again :
Such a condition is called resonance.
start to watch from here https://youtu.be/XOTLfnMOSqQ?t=142Resonance can exist in both the parallel resonance circuit and series resonance circuit, even if we deal with wire on the table not connected to anything.
and it experiences both the parallel and series resonance however never at the same time and at the same frequency.
It can have also series/parallel combination of resonance but that is extreme case so forget it.
Example:
It resonates if its length is equal to conditions causing resonance (e.g 1/4y)
Coil has increased capacitive component, due to wind to wind space or diameter of wire/foil used.
Typical foil capacitor is two or more coils and its capacitive component for AC is significantly higher than its inductive component.
If you were to connect each of the singular coils of that foil capacitor into separate circuit you will get 1:1 transformer with no core and separated by insulating wax paper
( electrolytic capacitors are excluded from that explanation)
So the bottom line is that if you
charge one side of capacitor this charge will always have vector of force at given direction.
balloon will always have charge that is refereed to earth or to any closer body of lesser or opposite sign.
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poynt99 is convinced the transfer of power is taking place between the single wire and TC top capacitance which are linking together to complete the current return path (2 plate capacitor)
Closed circuit is only required when you deal with DC or AC but not when you deal with EM wave.
In regular transmitter : You may transmit energy into an antenna and than to
Far Field when you first resonate than radiate and never reverse.
In regular transmitter ( not Tesla Coil with TC in our case ):
after you radiated energy, you can switch OFF the transmitter and EM wave will travel forever till totally dissipates due to losses
However it is different story with :
1. Zenneck Wave or surface wave in the interface.and it acts as said right below
2. In case of EM wave in
Goubau line or in interface
when you transmit you have
surface wave in the interface or
Goubau dielectric coated wireWhen you stop to transmit you have nothing there.
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I conclude the power is being all transmitted through the single wire between each TC
.
That is correct.
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The TC top capacitance are single plate capacitor and not linked in any way.
The top capacitor is
( one of plates of capacitor)the part of electrical circuit of the single structure of that particular Tesla coil acting as transmitter.
The rules of closed circuit applies only to that Tx
However since Tx Rx structure as one is reactive in its nature the impedance match between Tx and Rx is required
When you change anything in Rx that makes impedance match non existing than you are causing the Tx to suffer.
That moment has nothing to do with closed path of closed circuit.
when there is no impedance match you have bad SWR or VSWR to be exact. The reflected EM wave from detuned Rx is bouncing back to the Tx
and it may cause its damage or its generator damage.
Impedance match at Rx site is achieved by all components of Rx including the load
That is one of major problems of Viziv trying to commercially use surface wave known as Zenneck wave in the interface air/earth (also known as lossy dielectric and dielectric interface)
Wesley