If someone bother to read Tesla notes from Colorado Springs may find all the necessary clues of how devices work, what formula to use for calculus. Also from what I understand Tesla have employed spark gap as signal generator as at that time they didn’t have fancy and expensive oscilloscopes. Length of electric arc was for measuring high voltage and high frequency is generated by multiple spark that occur in an electric arc, they will match wire length for wave length equivalent in frequency.
And yes, insulating all the way the wire that connect two points of gradient to prevent reducing the difference in potential. Placement of capacitor in dead middle of gradient is utmost important, aka between the high elevated plate and ground plate.
https://youtu.be/srwU9d5bsHs?si=8kNbybqzSMRC4CSl Have a look at this gentleman work
Also, please note, Tesla state in the patent that ground connection can be just a battery if someone need a mobile solution.
And yes, insulating all the way the wire that connect two points of gradient to prevent reducing the difference in potential. Placement of capacitor in dead middle of gradient is utmost important, aka between the high elevated plate and ground plate.
https://youtu.be/srwU9d5bsHs?si=8kNbybqzSMRC4CSl Have a look at this gentleman work
Also, please note, Tesla state in the patent that ground connection can be just a battery if someone need a mobile solution.