All you want to know about VECTOR MAGNETIC POTENTIAL and his divergence but nobody told you

This is a model of Vector magnetic potential →A or Father of both components of complex magnetic field, VECTOR ONE →B = rot →A plus SCALAR field Hsc = - div →A. Hsc = (Hsc+) + (Hsc-) and Hsc ≠ 0.

This is simple 2D model of electron with all fields and his vector magnetic potential. Of course we should imagine this like volumetric in 3D spining objects to get corrct picture in pir mind how the fields look like around moving electron particle.

What is important is that Hsc- is in front of electron moving direction while Hsc+ is behind. Both scalar field components have form of semi-whirlpool votex, while vector B-field is strictly perpendicular to Hsc. One more important thing is that Hsc- componet has ability to accelerate moving charges i.e. electrons once they get in his volumetric zone, while Hsc+ contrary - decelerate moving charges.

At excellent Sergey Deyna CR-Tube experiment you can see how electron katode rays were in one case accelerated and in second case decelerated according to initial setup of Scalar magnetic field generated by toroidal core with special winding configuration. In his toroidal configuration Sergey has shielded vector B-field inside infinite toroidal core circumference - while Scalar Hsc field is not shielded and has position along main toroidal axis - through the hole at both sides from center.

Using precise referent time base as main clock generator and knowing times electron rays hit tube screen, we can easy meassure electron acceleartion or deceleration speeds like time shifts and read it directly at pulse width frames on oscilloscope screen. This is one of variants how to detect Hsc with both polarities and also their spatial configuration,

Speaking simply i tell you that negative sign scalar magnetic field is infinite prime mover source for any objects from sub microscopically electrons through heavy electric machine rotors. In same time looking from another direction positive Hsc field is a primary hinder for any moving action. As a proble being harder there is another plus obstacle by lentz vectorial rdrag force, for complete stoping any electrical machine.

So solution is in carefully shielding lentz force and his source B-field, for example like toroidal coil configuration, with precise reconfiguartion of positive Hsc+ scalar field to avoid their joint undesirable actions.