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Originally posted by occrider In case you have high aspirations in life: http://www.livescience.com/technolo...y_earth_mp.html

I liked the von Neuman machines part...

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I've got your microscopic black hole right here, buddy!

The one about getting the Earth and a black hole together talks about the closest black hole being 1600 light years from Earth, and that by moving both of them, they can be brought together in 800 years. Can anyone explain to me, how this can be? I mean, seen from Earth the speed of the black hole would be twice the speed of light, i.e. impossible. Right? So it seems to me that time on Earth (and in the immediate vicinity of the black hole) would slow down and it would in all manners feel like 1600 years? (EDIT: Guess what I'm asking is: 800 years from what point of reference?)

Last edited by trancaholic on Jun-02-2005 at 14:07

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Originally posted by trancaholic I mean, seen from Earth the speed of the black hole would be twice the speed of light, i.e. impossible. Right? So it seems to me that time on Earth (and in the immediate vicinity of the black hole) would slow down and it would in all manners feel like 1600 years?

Correct.

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Originally posted by trancaholic The one about getting the Earth and a black hole together talks about the closest black hole being 1600 light years from Earth, and that by moving both of them, they can be brought together in 800 years. Can anyone explain to me, how this can be? I mean, seen from Earth the speed of the black hole would be twice the speed of light, i.e. impossible. Right? So it seems to me that time on Earth (and in the immediate vicinity of the black hole) would slow down and it would in all manners feel like 1600 years? (EDIT: Guess what I'm asking is: 800 years from what point of reference?)

It involved some very large rocket boosters and a whole lot of science fiction! I'll be long dead either way.

quote:

Originally posted by trancaholic The one about getting the Earth and a black hole together talks about the closest black hole being 1600 light years from Earth, and that by moving both of them, they can be brought together in 800 years. Can anyone explain to me, how this can be? I mean, seen from Earth the speed of the black hole would be twice the speed of light, i.e. impossible. Right? So it seems to me that time on Earth (and in the immediate vicinity of the black hole) would slow down and it would in all manners feel like 1600 years? (EDIT: Guess what I'm asking is: 800 years from what point of reference?)

From that section....

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(That's in an external observer's frame of reference and assuming you move both the Earth and the black hole at the same time.)

If you move the Earth 800 light years and the blackhole 800 light years so the meet in the middle then the total time will be 800 years (obviously moving at the speed of light) to cover the 1600 light years.


Anyway, my favorite bit was this one about an exercise for the reader, it sounds like it came straight from a text book

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Creating a microscopic black hole is tricky, since one needs a reasonable amount of neutronium, but may possibly be achievable by jamming large numbers of atomic nuclei together until they stick. This is left as an exercise to the reader.

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Originally posted by auujay From that section....

Ahh, overlooked that part.

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Originally posted by auujay Anyway, my favorite bit was this one about an exercise for the reader, it sounds like it came straight from a text book

Laughed at that one too. Text books often leave the most annoyingly difficult parts to the reader.

why dont you people just watch TV like everyone else

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Originally posted by josh4 why dont you people just watch TV like everyone else

LOL. At any other time of the year I'd say "amen to that!". However, the summer lull has kicked in and there is little for me to watch outside of reruns and dumb summer flash-in-the-pan shitty shows. Time to grab a book and sit outside and enjoy the longer, warmer days.

At least I still have 2 more episodes of The Shield to watch.

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Originally posted by josh4 why dont you people just watch TV like everyone else

What makes you assume that we don't?

(Actually, I haven't seen TV since I moved to NYC this winter. Except for muted baseball and news clips in bars and restaurants. Btw. what's up with that? Can't you americans entertain each other without having some damn screen flickering and disturbing you?)

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Originally posted by trancaholic What makes you assume that we don't? (Actually, I haven't seen TV since I moved to NYC this winter. Except for muted baseball and news clips in bars and restaurants. Btw. what's up with that? Can't you americans entertain each other without having some damn screen flickering and disturbing you?)

They don't call it the boob-tube for nothing! Who can pass up boobs!