Re: A partial black hole?

Tim Little <tim@[EMAIL PROTECTED]
> wrote:

> On 2008-03-05, Jonathan L Cunningham <spam@[EMAIL PROTECTED]
> wrote:
> > Suppose a very large black hole, where the acceleration due to
> > gravity is 1 g at the event horizon.
> 
> There is no such thing.  Acceleration required to hover arbitrarily
> close to the event horizon is unbounded.

See my reply to EMF.
> 
> > You seem to be saying that (c) is wrong. What am I missing?
> 
> The assumption you were working under is false.

How informative!

> > I get what you mean when you say "a geodesic is the path the
> > maximizes proper time" and what you say (ISTM) does follow from it
> 
> It doesn't, actually.  A geodesic has the longest proper time between
> two events, but not necessarily between an event and a point.

Yes. Which resolves the paradox in my mind. The argument about geodesics
is false (or, at the very least, if not false then incomplete).

Jonathan