This report describes the derivation and the use of three fortran programs:nFIFL = Field from a straight filamant of finite length.nFIRS = Field from a rectangular sheet of infinitesimal thickness.nFIRB - Field from a rectangular bar of finite length.nThe three geometries in question might suggest a logical extension of the solution for the simplest geometry, i.e., the linear filament, into the successively more complicated cases, i.e., the rectangular sheet and the rectangular bar. The programs to be discussed were;however, developed independently. Each program is, therefore, the result of a different mathematical approach and will, accordingly, be discussed in separate sections in the body of this report.
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