>>12489152>>12489213I'm personally not the greatest fan of Feynman as a person, but the "how do magnets work" Feynman couch interview seems appropriate here, google it.
I already said that to mathematically describe the situation, you take Maxwell's equation, Lorentz force and Newtons second law. I don't think there's a good "why" explanation that's better than to point to the phenomenology of what sort of interaction we observe between character particle in vicinity of an electrical rod.
>why is the shape a CIRCULAR shape instad of a shape like pic rel"because" the magnetic field B is something else than the electrical field E.
If I hand you a glass of water, you'd no say
>the water is liquid, why is the glass not liquid?Well the water and the glass are two different aspects of "the glass of water"
The "curly" aspect comes into play because the math to model it involves a cross product, or more differential geometrically speaking
https://en.wikipedia.org/wiki/Hodge_star_operatorBut that's just the description of the math necessary to model the observed interaction of charged particles next to a rod - that's philosophica as fundmanetal as it gets.
You can also go down to more microscopic models, involve quantum mechanics etc., but the boundaries there is also that QM should give rise to the macroscoptic phenomena that we already know
