Now this has come full circle. Russ believed that the magnetic field in an LC resonator, let's say in the Newman motor, could make the rotor magnet move without affecting the amplitude of the LC resonance.
Well, this is dead wrong. You now know that when the magnetic field subtended by the LC resonator makes the rotor magnet move, the very act of the movement of the rotor magnet induces a small EMF pulse inside the LC resonator and that EMF pulse inside the LC resonator "eats" some of the available voltage inside the LC resonator that drives the resonance. With less voltage available to drive the resonance, the amplitude of the resultant current flow in the resonator decreases.
In simple terms, when the magnetic field of the LC resonator makes the rotor magnet move, then the total energy in the LC resonator decreases, no ifs, ands or buts. Effectively, the LC resonator is transmitting power into the outside world when the rotor magnet moves, and over the total span of time that the rotor magnet moves, that represents a transmission of energy into the outside world and as a result the total energy in the LC resonator decreases.
SS