Are Magnetic Field Lines Real? - Comments

[sweet springs]

That EM can be formulated without the concept of field shows convenience is often used to decide how to view something.

As a beginner I am not aware of EM formula without the concept of fields. I will learn it. Thank you for your advise.

Aharanov-Bohm effect can raise another discussion on reality of magnetic field line. There A plays more "real" role than B.

 

[vanhees71]

I'd not learn Wheeler-Feynman absorber theory before I'd have learned standard classical electrodynamics. Anyway, it's an amusing episode on the attempt to develop QED, but finally it was a dead end.

If you are interested in these issues, a nice book (though unfortunately having some typos in formulae)

A. O. Barut, Electrodynamics and classical theory of fields & particles, Dover Pub. (1980)