Re: Symmetry

Edward Green wrote:

badd_xi2@xxxxxxxxx wrote:

Barry wrote:

It's up to those who predicted the existence and observability of
singularities to provide numbers and observational tests.

That would be you, since you are claiming that general
relativity predicts naked singularities. Where are the
calculations you were supposed to provide in support of
that claim?

If GR contains no naked singularities, then presumably we are excluding
observers on the inside of black hole horizons. Since I thought the
canon was that there was "perfectly good physics" in there, I wonder on
what basis we would do this...

As I understand it, for an observer inside a BH, the singularity
resides in his "future".

All future pointing trajectories point towards the singularity

So he can't "observe" it - until he arrives there that is.

For a naked singularity, there are future pointing trajectories that
point away from the singularity, so it can, in principle be observed.

( The Big Bang singularity might be one example..... but... )

Barry

.

Relevant Pages

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