pem1a@ihuxr.UUCP (Tom Portegys) (05/31/84)
This newsgroup has been good reading lately thanks to a few
"Mr. Wizards".
I have a question. I understand that black holes are black because
light cannot escape them. I am wondering about the meaning of
this. Does this mean that:
(1) No photons at all escape. (Someone asked about gravitons escaping
a black hole recently. This would seem related).
(2) All photons are red-shifted until they have no energy left. Only
these escape (are there such things?).
(3) The speed of light in a black hole is zero.
Excuse these if they seem crazy or ignorant. I am both.
Tom Portegys
Bell Labs, Naperville, Ill.
ihuxr!pem1a or ihlpg!portegys