When dielectrics are modeled as an RC network, this quantity’s reciprocal is roughly proportional to omega to power of the fraction of capacitors in the network. This quantity’s common value is given by half this quantity’s even mode value in symmetric mode driving. A normalized form of this quantity minus 1 over this quantity plus one is a transformation used to create a polar plot with circles and arcs anchored at (1,0) (15[1])that are contours where this quantity’s (*) components are constant. Reflection coefficients are calculated by plotting this quantity on Smith charts in RF signal analysis. Electrical terminations seek to “match” this (10[1])quantity to its characteristic form in transmission lines to allow for optimal power transfer to the load. For 10 points, resistance plus j times reactance equals what complex quantity denoted Z? ■END■ (0[1])