Analogue Technique for Mapping Poissonian Fields

Abstract

<p> A review of the conducting paper analogue for plotting two-dimensional electric and magnetic fields is given. An improved capacitively-coupled conducting paper analogue is described that will map either single or multiple, uniformly-distributed-source Poissonian fields. A DEW map construction technique is detailed that uses a thin tape dielectric and silver-painted source electrodes. Equipotentials on the conducting paper surface correspond to lines of constant magnetic vector potential or flux lines. Differential voltages are analogous to flux density. The equipotential distribution is plotted using a null technique with a unique point on the map surface held at virtual ground potential. The time-varying equations governing the capacitively- coupled analogue are derived. As a result of these equations, an analogue for the skin effect phenomenon in conductors has been demonstrated.</p>