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Am I correct? The field from a solenoid is the same as that of a dipole and on
axis ~ 1/r^3. (1)
Using a field calculator (2) I found (far field) the on axis field of a
cylindrical magnet ~ 1/r^2. Is this correct, and if so, would a cylindrical
coil be a correct model?
(1) the last equation of Magnetic Fields due to a Solenoid
(2) K&J Magnetics - Magnetic Field Calculator