Abstract
Outer surfaces of simple objects such as plates, cylinders, spheres, etc. may be approximately reproduced (in an infinite number of ways) by closely assembling a number of insulated metal stripes or wires. If those stripes or wires are then suitably connected through purely reactive impedances, one obtains a system that exhibits either ‘‘magnetostatic’’ or ‘‘electrostatic’’ modes. These modes are analogous to those predicted and observed in solid bodies of corresponding shapes (plate, cylinder, sphere, etc.) made of respectively magnetic or dielectric materials. The proposed systems can thus constitute models on which a number of basic features characterizing the magnetostatic or electrostatic modes can be easily demonstrated and studied. Two specific examples, the ‘‘magnetic’’ plate, and the ‘‘magnetic’’ cylinder, will be described in detail in this paper, both theoretically and experimentally. Other models exhibiting electrostatic modes will also be presented but only on the theoretical side.
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