Group: sci.physics.particle
From: Igor
Date: Saturday, March 22, 2008 11:50 AM
Subject: Re: Fundamental Mass

On Mar 22, 6:27=A0am, "Y.Porat" wrote:
> On Mar 22, 7:00=A0am, Tom Roberts wrote:
>
>
>
>
>
> > Pmb wrote:
> > > What changes is when the neutron is inside is that there is an
> > > energy related to the stong force and that energy has a mass equivalen=
t. It
> > > is not that the mass of the neutron changes.
>
> > It is not clear that it even makes sense to discuss "a neutron" inside a=

> > nucleus. All the quarks and gluons of the neutron intermix quite
> > strongly with the quarks and gluons from the other constituents of the
> > nucleus. In hindsight, it's quite remarkable that the nuclear shell
> > model worked as well as it did (which was by no means perfect).
>
> > On the other hand, counting protons and neutrons in a nucleus works
> > exceedingly well. And yes, the sum of the masses of those protons and
> > neutrons is larger than the mass of the nucleus they form -- that is
> > inherent in binding constituents into a single compound object.
>
> > Tom Roberts
>
> --------------
> if you dont know and dont understand
> just say =A0- i dont know!!

Maybe you should take your own advice once in awhile.

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