Originally Posted by
Farsight
But you did evade giving a response to my references to the Einstein-de Haas effect and magnetic dipole moment. These provide hard scientific evidence that electron spin involves something going round. As ever you dismiss Einstein etc and evidence when it's inconvenient truth.
You didn't provide evidence, or argument, or anything. You did a Farsight-standard "look, read this, and you'll come to the same conclusion I did."
Nope.
The Einstein-de Haas experiment proves that intrinsic angular momentum is a type of angular momentum, and goes into the same conservation law. In the real world, Dirac (among others) was able to describe this momentum
without assuming anything "going round", and that's perfectly consistent with all known facts about these particles.
Your mental picture already contained "something going round", and you read about de Haas and thought it agreed with your picture. That's all the argumentation you have here, and indeed it's fairly typical of you.
If "something going round" is so important, why can't you find an error (or a failred prediction) in Dirac's treatment?