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.
--
Erik Max Francis && max@[EMAIL PROTECTED]
&& http://www.alcyone.com/max/
San Jose, CA, USA && 37 18 N 121 57 W && AIM, Y!M erikmaxfrancis
A people birthed in sorrow will die in sorrow.
-- (a Vasudan proverb)
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