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)

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)