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- Newsgroups: sci.physics
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!darwin.sura.net!wupost!gumby!destroyer!cs.ubc.ca!newsserver.sfu.ca!news
- From: palmer@sfu.ca (Leigh Palmer)
- Subject: Re: Flying fast enough and becoming a black hole
- Message-ID: <1992Nov19.222802.2394@sfu.ca>
- Sender: news@sfu.ca
- Organization: Simon Fraser University
- References: <SRCTRAN.92Nov19111841@world.std.com>
- Date: Thu, 19 Nov 1992 22:28:02 GMT
- Lines: 22
-
- In article <SRCTRAN.92Nov19111841@world.std.com> srctran@world.std.com (Gregory
- Aharonian) writes:
- > I just finished reading a science fiction (actually with an Islamic
- >setting, a rarity in the field), which had as one of the main points of
- >the story that if you built a spaceship and continually accelerated,
- >eventually you relativistic mass, for the size of the spaceship, would
- >be large enough to cause collapse into a blackhole. Not being good with
- >keeping track of boosts, I wonder if in a large enough universe, with
- >enough energy, if this is possible or meaningful. And if so, what do you
- >feel in the rest frame of the spaceship when collapse occurs?
- >
- >It's the first time I ever seen this scenario suggested in a sci or sci-fi
- >book, and it seems an interesting one to explore.
-
- Of course it's based upon an absurdity - that a black hole could be observed as
- such in one inertial frame and not in another, at the same time. (The phrase
- "at the same time" is appropriate here, since the spacecraft is at one place.)
- A black hole forms if the *proper* mass and radius are critical.
-
- "Black holiness" is a relativistically invariant quantity, if a binary one.
-
- Leigh
-