The Elephant and the Black Hole
Fascinating stuff:
What happens when you throw an elephant into a black hole? It sounds like a bad joke, but it's a question that has been weighing heavily on Leonard Susskind's mind. Susskind, a physicist at Stanford University in California, has been trying to save that elephant for decades. He has finally found a way to do it, but the consequences shake the foundations of what we thought we knew about space and time. If his calculations are correct, the elephant must be in more than one place at the same time.
Read the whole thing. Via GeekPress.
Comments
"We've been forced into a profound paradox that comes from the fact that every conceivable outcome we can imagine from black hole evaporation contradicts some important aspect of physics."
I think that paradox exists because physicists have strayed away from science and into mystical philosophy.
Posted by: Jake
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October 30, 2006 08:18 PM
Maybe the reason Susskind's elephant is both in and out of the black hole is that it both ran and didn't run from a mouse that Schrödinger's cat both failed to catch and caught because the cat was both dead and alive.
Or maybe I need to leave cosmotology to the professionals. :-)
Posted by: Stephen Gordon
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October 31, 2006 05:35 AM
Jake,
There have been criticisms of string theory and quantum gravity to that effect. But you don't need to dabble in mysticism in order for black holes to generate paradoxes -- the singularity of the black hole is, quite literally, where our understanding of time and space break down. Just applying standard equations to the singularity will give you paradoxes.
Stephen,
I don't know, try this one out:
STEPHEN GORDON, SEMI-PROFESSIONAL COSMOLOGIST
Has a pretty good ring, doesn't it? I thought you would like this last bit:
Cosmologists study this radiation because its variations tell us about the infant moments of time, but Susskind speculates that it could be a kind of Hawking radiation coming from our universe's edge. If that's the case, it might tell us something about the elephants on the other side of the universe.
Sure, that's all well and good.We do want to know about those elephants. But more importantly, we want to know about the turtles those elephants are standing on!
Posted by: Phil Bowermaster
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October 31, 2006 06:32 AM
Hmmm... "semi-professional cosmotologist."
That's like both being a cosmotologist and not being a cosmotologist at the same time.
Now that's appropriate!
Posted by: Stephen Gordon
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November 1, 2006 04:16 AM