Re: What is the source of charged particle's seemingly limitless charge
- From: "Randy Poe" <poespam-trap@xxxxxxxxx>
- Date: 27 Sep 2006 07:51:15 -0700
rds wrote:
In physics class we always seemd to start with the premiss that
electric chage was caused by potentials set up between charged
particles.
This sounds confused. Charge isn't "caused by potentials".
It's a fundamental property of individual particles. If you
have two particles of charge +1, then together they
have charge +2.
It was always just assumed that these particles (electrons
and protons) were just there. And that their charge, (which seems to
provide the energy for all of our physical world) are just assumed to
be there.
Right. Like their mass, and their spin, and their other
fundamental quantum numbers.
I can see for example a field set up between two charged particles as a
perpetual flow of something through space. The proton as the source (+)
and electron as the sink (-).
No, it isn't one-way, and the "+" doesn't mean the
proton is a source. The signs are arbitrary. Early
experimenters with static electricity observed there was
this static property they called charge, and it seemed
to come in two opposite flavors. One they called "+",
the other "-".
Quantum field theory (not that I'm all that familiar with
it) does have a description something like that. The things
being exchanged are photons, which have no charge.
It looks like the source's are
perpetual. Is this because the sink's somehow return the energy back to
the sources (kind of behind the scenes) ?
There is no charge flow in this situation and no energy
flow.
I've never seen that point addressed. Magnatic fields are caused by
moving charges, but what causes the perpetual charge of these charged
particles?
There is no charge moving when two particles are just
sitting there. There is nothing that ever takes charge
away from any particle. You can't discharge a particle.
It's perpetual because it's a constant property of the
particle.
When you discharge an electrode, you do it by moving
charged particles from one place to another. But the
particles themselves are always charged.
- Randy
.
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