The resistance of inductors, L2 and L3, is zero because iron has no resistance to the passage of magnetic flux. Magnetism can travel indefinitely without limitation, nor impedance, to its amplitude. Power amplification is magnified by increasing the mass of the iron winding surrounding the copper tubing. This is represented by increasing the value of inductance of the variable labeled, FeWind, for each of these two inductors. Power is also amplified by increasing the frequency of the sine wave generator, V1. Capacitance is preset at a very large value at, C5, because without it, power amplification will not turn ON - it will not occur. Likewise, the value of resistance assigned to parameter, Gres, is also very high for similar reasons: the amplification for these modifications won't work without it. This high resistance makes sense if we consider how electrically isolated is the iron winding from the environment immediately surrounding this device. Since it is this iron winding that will inject the environment's frequencies into this device equivalent to the injection of sine wave at, V1.