Talk:Laws of black hole mechanics

Page now merged with Black Hole Thermodynamics (August 2006)

04th April - I added something on the generalised second law

Zero'th law discussion

The analogy to thermodynamics might be lost for most people. Perhaps also add something like:

The event horizon's surface gravity is defined as a constant because it's assumed that inside of the event horizon all mass and energy collapse into a singularity. Therefore, the void between the singularity and the event horizon is constant in the calculation of the surface gravity. Jeff Carr 11:23, 21 January 2006 (UTC)[reply]

I personally agree with this proposal.Sephiroth De Lacroix 14:44, 21 May 2006 (GMT+0930)

I disagree with the suggestion, which looks like it isn't going anywhere since it's 6 months old now. It doesn't make any sense as written. I think a better suggestion is to state that the surface gravity is inspired by the equation area of horizon * surface gravity = 4 * pi * G * mass of black hole. This is inspired by the Komar mass.

I know this works in the static case (i.e. Schwarzschild black holes), but I'm not positive yet that it works for rotating black holes, therfore I'm not going to implement it.

Note that the proper acceleration required to "hold station" at the event horizon, which is probably the most straightforwards generalziation of the Newtonian idea, is infinite. Pervect 22:39, 17 August 2006 (UTC)[reply]