Replies

Re: [Vo]:Theory Panel Dissensus
Chemical Engineer Wed, 15 Aug 2012 10:39:21 -0700
No, I am not making it up and it was not a dream

A *charged black hole* is a black
hole that
possesses electric charge .
Since the electromagnetic repulsion in compressing an electrically charged
mass is dramatically greater than the gravitational attraction (by about 40
orders of magnitude), it is not expected that black holes with a
significant electric charge will be formed in nature.

A charged black hole is one of three possible types of black holes that
could exist in the theory of gravitation called general
relativity.
Black holes can be characterized by three (and only
three)
quantities, its

- mass *M* (called a Schwarzschild
black hole if it
has no angular momentum and no electric charge),
- angular momentum
*J* (called
a Kerr black hole if it
has no charge), and
- electric charge
*Q* (charged
black hole or Reissner-Nordström black
hole
if
the angular momentum is zero or a Kerr-Newman black
hole if
it has both angular momentum and electric charge).

A special, mathematically-oriented article describes the Reissner-Nordström
metric for a
charged, non-rotating black hole.

The solutions of Einstein's field
equation for
the gravitational field of
an electrically charged point mass (with zero angular momentum) in empty
space was obtained in 1918 by Hans
Reissner
andGunnar Nordström ,
not long after Karl
Schwarzschild found
the Schwarzschild metric as
a solution for a point mass without electric charge and angular momentum.