The Perturbation of Slowly Varying Electromagnetic Fields by Three-Dimensional Conducting Bodies

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Abstract
The perturbation of a slowly varying alternating field by conducting bodies of cubic shape is considered. A numerical method is used to determine the fields associated with the induced currents. Current concentrations are produced in the corners of the conductors, and these move inward and decay with time as the source field varies. A cavity region within the conductor further distorts the fields. A comparison is made with two-dimensional models.

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