Why does the magnetic moment of a nucleon line up with a uniform magnetic field?

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The alignment of a nucleon's magnetic moment with a uniform magnetic field occurs due to the torque experienced by the magnetic moment in the presence of the field. Contrary to the belief that the external magnetic field must vary within an object for alignment, a uniform field can still exert sufficient torque to cause this alignment. This principle applies to both classical and nuclear magnetic moments. The discussion emphasizes that the interaction between the magnetic moment and the external field is key to understanding this phenomenon. Overall, the alignment is a result of the torque acting on the magnetic moment within the uniform magnetic field.
enfield
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I thought the external magnetic field had to vary within an object in order for that object's magnetic moment to line up with the field.
 
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Classically, a magnetic moment experiences a torque when in an external magnetic field that forces it to line up with the field. This applies to nuclear moments as well.
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
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