Swift, nice fitting!

Indeed as the quote says, the field does not vanish. Unfortunately, the quote is "dummed down" for the general, but we here on BAUT are edumacated and know that what they want to say is that the dipole component disappears (and reappears) and will leave only the higher order moments of the magnetic field. Therefore, we see four poles in the simulation, generated by the quadrupole field.

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