Yeah, everything is handled as sinelike in nature, ok for analysis for us I think.
The lecturer talks about resonance when I is max, and V is lowest, he also shows the resonance curve (@ 9:30 mins).
we are looking for the opposite, Vmax and Imin.
For max current, Imax, (XL - Xc) is small, and the reactance goes to zero @ resonance (reactance = frequency dependent resistance to current) (@12mins)
For Imin, (XL - Xc) is big(gest).
for this reason meyer said the reactance of the watercap must be way smaller than the reactance of the inductor. (Page 7-10)
I'll give a shot later for a Vmax freqresponse curve.
BUT, (just got this idea):
We want to know the freq @ which the coils are @ res and the cap is not: max power is converted in the bifilar (as an effect it creates the high voltage we want), the HV is felt by the caps (waterresistance Re is still there).
Just like vibrating string shown later in the lecture, we want the nodes but with its right end loose and swings @ the biggest amplitude which also happens to be @ waterfreq..
max power to coils, no power to cap, freq is somehow @ dielectric freq .
just a thought, could be all wrong