On Mar 26, 3:11 am, Erik Max Francis <m...@[EMAIL PROTECTED]
> wrote:
> Shawn Wilson wrote:
> > On Mar 17, 12:26 pm, sigidu...@[EMAIL PROTECTED]
wrote:
> >> Black holes can carry charge.
>
> >> Relativity tells us that all acceleration is the same, right? So if
> >> we drop a proton and a neutron into a positively charged black hole,
> >> the proton will feel less force.
>
> >> This suggests that the proton would experience a different event
> >> horizon, except that I know that's not right.
>
> > Sounds fine to me. As far as an electron (here) is concerned, the
> > event horizon is further from the center than it is for a proton.
>
> Nope. The event horizon is the same for all particles; it's the region
> within which the are no timelike paths back out of the surface. That's
> independent of the charge on the particle.
>
> In general relativity, gravity is not a force. It's a natural
> consequence of an object moving along the shortest path through
> spacetime. Potentially large electromagnetic forces on a particle don't
> change when an event horizon exists or doesn't exist, since the amount
> of force required to lift a particle out of a horizon _doesn't exist_ --
> it is fundamentally impossible.
And Erik proves again that he is only marginally aware of things.
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