The following calculator performs a volume integration of the magnetization to find the magnetic field at
any chosen point (x', y', z'). The source of the field is a rectangular bar magnet with constant
magnetization in the z direction.
The magnet geometry is specified by the coordinates (xo, yo, zo) of the the corner opposite to the origin. The units for the length is irrelevant.
The model is broken into "elements" by specifying the number of divisions in each direction.
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