“…Average over a cycle firsfly the quantity found in 2 to obtain the average power dissipated and sheath conductance and secondly the quantity found in 5 to find the average work done in moving charge and the sheath capacitance. There are many papers in the literature [Mlodnosky and Garriott, 1962; Crawford and Mlodno,sky, 1964;Grard, 1965;Harp and Crawford, 1964; Craw-/ord and Harp, 1965;Crawford and Grard, 1966;Driancourt, 1965;Storey, 1965;Grard and Tunaley, 1968;Fiala and Storey, 1970;Aggson and Kapetanakos, 1966;Oliver et al, 1970] dealing with sheaths around antennas at low and high frequencies and with biases applied to the antennas. Most of these theories use linear formulations, valid only if one has both very low peak voltages (of the order --of tens of millivolts) and short conductors (less than 5 m).…”