Does the shape of an electrical capacitor affect its self resonance?
Consider a capacitor that is comprised of two long, thin conductors of significant length
As we know, electrons flowing through a conductor of any length produces a slight inductance which increases with length
My theory is having a capacitor, with its capacitance determined by the proximity and size of the conductors, will also have an inductive effect by the increased length the electrons must flow from the ‘furthest’ part of the electrical field
Compare this with a circular plated capacitor with the same field area, but with of course a vastly reduced diameter and therefore much negligible conductor length
Ergo, if you fine tuned the design of this long, thin theoretical capacitor you would have a resonant circuit that doesn’t technically contain a inductive device, just resonant from the capacitance plus the aforementioned increased conductor length giving the inductive element of the resonance