In article <XK-dnYq-KuCCkJrVnZ2dnUVZ_rLinZ2d@[EMAIL PROTECTED]
>,
max@[EMAIL PROTECTED]
(Erik Max Francis) says...
> Batroc Z. Leaper wrote:
>
> > With no sup****ting data. The hypothesis of charged black holes is
just
> > hand waving, with no observational basis.
>
> And your claims differ from this how, exactly ... ?
It's not a claim, just an observation that there is no known mechanism
for EM forces to transmit across an event horizon. EM forces are
mediated by photons, and photons don't cross the barrier. If you want
to claim that black holes can exhibit charged behavior, you have to have
at least a vague idea of how that could happen, or observational
evidence that it does happen. In the absence of either, it is just hot
air.
> > If electrical charge does vanish when it crosses the event horizon, it
> > would lead to an excess of electrons in the universe, and an
unbalanced
> > charge. That should lead to observable effects, like an acceleration
in
> > the expansion of the universe due to the repulsive effect of the
charge
> > cloud.
>
> Right, and it would violate several conservation laws. Which is good
> reason for thinking _it doesn't happen_.
That is *a* reason. You need to establish that it is a good reason.
Everyone knows that conservation laws are not absolute. The universe
could not exist if they were. You will also note that I never said that
charge was destroyed, only that it might not be able to interact with
the space outside the event horizon. What happens to a charge as it
crosses the event horizon is a separate question. It might very easily
continue to affect the internal structure of the black hole, even if it
is not externally measurable.
The separate comment about charge not being able to penetrate the event
horizon was based on the observation that event horizons are apparently
magnetic superconductors. I was thinking that electrical charges might
not be able to penetrate a magnetic superconductor, the same way
magnetic fields cannot penetrate an electrical superconductor. That is
pure speculation, but if a proton enters the black hole while its charge
does not, that would create a disembodied electrical charge, and a whole
new field of physics. It seems extremely unlikely, but at least it
would present a mechanism for a black hole to exhibit charged behavior.
> If something insane happens, insane things result. That's a good reason
> to include that such insane things probably don't happen.
Insane things started happening in physics in 1887, and have been
getting stranger ever since.
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