The third and final goal of this treatise is to unveil the physical constitution of the magnetic field and make an illustration of it.
To get to the point faster, skip §5.2 that is of secondary importance with respect to that goal, click "Next" above.


§5.2 should you want to consult it now, is about the essentials of magnets and electromagnets; and the graph that put me on the right track to uncover the physical constitution of the magnetic field.