On Tue, Jul 29, 2025 at 7:47 PM Alan Grayson <[email protected]> wrote:
*> In the UP/DN case of electrons passing through the SG apparatus, the > spin might be non-existent, just another quantum number. But the fact that > the electrons respond to the magnetic field as they do, in opposite > directions, strongly suggests IMO that they have real physical spin.* *Electrons certainly have physical spin, but do they have "real" physical spin, that is to say do they always have one and only one physical spin state? You send electrons through a magnetic field that has been oriented in some RANDOM direction and note that some of the electrons swerve in that direction and you decide, for no particular reason, to call that direction "up". If you send those up-electrons through a similar magnetic field they will swerve in that same direction with 100% certainty.* *However if you send those up-electrons through a magnetic field oriented in the orthogonal direction, which you decide to call the left/right direction, and then send them through the original up magnetic field again you'll find that the electrons no longer behave in the way they did before, instead 50% of them will go up but 50% will go down. That is very strange but that is nevertheless a fact. * * > Hence, the idea of modeling them as orthogonal instead of anti-parallel > makes no sense. AG* *You feel that the idea is ridiculous and you're not alone, some very intelligent people have been saying that about quantum mechanics for about a century now, but nature does not share their opinion. And it's important to remember that being ridiculous is not the same as being paradoxical. * *John K Clark See what's on my new list at Extropolis <https://groups.google.com/g/extropolis>* > *not all proofs are mathematical, some proofs are physical, that's why > physicists need to perform experiments. No mathematician in previous > centuries, no matter how intelligent, could've sat in his armchair with a > notepad and derived quantum mechanics. * > > -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/everything-list/CAJPayv0nWcTWfQzjWcpkHV%3DX5UeXvK%3D_dXKbvTGoWOq7NKYS5A%40mail.gmail.com.
