- #36
TrickyDicky
- 3,507
- 28
The mass distribution is demanded to be spherically symmetric, the thing is that a change(increase) in mass inside the horizon can be theoretically detected outside the horizon, so the notion of propagation you highlight is also realized,stevendaryl said:The notion of "propagate" that is appropriate for talking about whether an effect inside a black hole can propagate outside is in terms of disturbances. If I make a tiny change to the distribution of mass inside a black hole (or distribution of charge), is that change visible from outside? The answer is "no".