How Can we Find the Escape velocity of a black hole

[stedwards]

An object that has so much gravity that light, (or anything else), cannot escape from it once it has crossed the event horizon.
The event horizon is the 'point of no return'.
An object with sufficient force applied to it can (in principle anyway) escape from the black hole's gravity while it is still outside of the EH.

You know, I don't recall who I was directing this question to. I think one of the best definitions is "A black hole is a region from which nothing can escape; not even light," making the OP question moot.

Apparently this shouldn't preclude virtual particles enabling space-like interaction (effectively v>c). The Coulombic forces of electromagnetism and gravity should be in effect, so that the charge and mass within a black hole is measurable outside the event horizon.

Give this, the weak and the strong force should not be precluded and the black hole "no hair" argument should be revises to include the virtual weak and strong forces.

 

[davenn]

I think one of the best definitions is "A black hole is a region from which nothing can escape; not even light," making the OP question moot.

and that is what everyone has repeatedly been telling him for 3 pages now, but it still doesn't seem to be sinking in !

 

[stedwards]

and that is what everyone has repeatedly been telling him for 3 pages now, but it still doesn't seem to be sinking in !

Nah. I did a little checking. The original poster is long gone. Thereafter, it's been just us chickens trying to impress each other without knowledge of black hole physics.

What do you think of strong or weak charges as variable quanities that should be included in the description of a black hole?