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From: Robert Higgins on 19 Nov 2009 05:35
On Nov 19, 12:04 am, Jarek Duda <duda...(a)gmail.com> wrote:
> Robert You are ignoring argument I've told a few times - look at
> quantum phase for particle with nonzero spin - it makes rotation
> around spin axis - electromagnetically it denotes that there is
> magnetic flux going through loops around this axis.
> Particles with nonzero spin has magnetic flux going through it!
> It is proportional to the spin.
> They don't need charge for that - it's what spin is about.
> How photon with twice stronger magnetic flux going through it than for
> electron could be unaffected by strong (inhomogeneous) magnetic
> field????

Most of what you are writing is such nonsense I can't even guess what
you're alluding to. Somewhere in there I think I can make out a
reference to spin-orbit coupling, but that's probably because I know
what I'm talking about and you don't, and I'm trying really hard to
imagine you actually know something..
From: Igor on 19 Nov 2009 12:14
On Nov 18, 10:55 am, Jarek Duda <duda...(a)gmail.com> wrote:
> Spin corresponds to magnetic dipole moment of particle,

This is not true if a particle has no internal charge distribution.
So your initial statement is false for a photon.

Besides, you've gotten it backwards. The magnetic dipole moment
depends on spin and charge. You need a current loop.
From: Aleph on 19 Nov 2009 12:22
On Thursday 19 November 2009 17:19, in <a037ea1d-b3c5-4d1b-a247-
faf299fa309c(a)b15g2000yqd.googlegroups.com>, Y.Porat sat down and wrote the
following words of wisdom:

> <snip>
>
> if Robert Higgins is a Professor of anything
> i am the pope of Rome (:-)
> he is at most - a fish merchant in the fish market and a cheap
> gangster

And once more, Porat has no option but to resort to ad hominem and a (rather
pathetic) appeal to ridicule.

BTW: Being a fish merchant in the fish market seems like a good proposition.

--
Aleph

This message was posted to usenet so please reply that way. Emails to
this account are very likely to be ignored.
From: Jarek Duda on 19 Nov 2009 12:42
On Nov 19, 6:14 pm, Igor <thoov...(a)excite.com> wrote:
> On Nov 18, 10:55 am, Jarek Duda <duda...(a)gmail.com> wrote:
>
> > Spin corresponds to magnetic dipole moment of particle,
>
> This is not true if a particle has no internal charge distribution.
> So your initial statement is false for a photon.
>
> Besides, you've gotten it backwards.  The magnetic dipole moment
> depends on spin and charge.  You need a current loop.

So what about neutrons?
http://prola.aps.org/abstract/PR/v96/i6/p1546_1
Charge and spin are completely separated different properties - spin
isn't made of spinning charge!
From: Jarek Duda on 19 Nov 2009 13:01
You want to see charge as the fundamental property - but maybe it's
the other way...
Look at the most fundamental particles - leptons: there is 'pure spin'
particle (neutrino), but there is no pure charge one ...
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