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I know that a black hole is a star that has collapse in on itself. And it collapses to a point with zero volume and infinite density. But i remember reading an article somewhere that said because blackhole have such a large gravitational pull that it would create a time dilation. Is this all based off of Einstein's general theory of relativity?
And if so would that mean that all time is based off of matter and gravitational fields?

2006-09-05 23:18:04 · 5 answers · asked by none 2 in Science & Mathematics Astronomy & Space

5 answers

According to the theory of relativity, any massive object distorts the fabric of space-time (which means time *is* affected by gravity). The more massive the object, the higher this distortion is. The time dilation you speak of happens when you accelerate to very high speeds, and I'm not talking 200 mph high speed. This only happens when you travel at speed very close to the speed of light. What goes on is that you basically experience time slowing down the faster you go, until of course you hit a dead-stop at exactly 100% the speed of light (which is impossible, alas).
I don't believe this has any implications on time. Time is simpy a dimension, like length and width... They're not really "based of" anything. Just conecpts I suppose.

2006-09-05 23:35:34 · answer #1 · answered by Anonymous · 1 0

From what I've read, you are right that the presence of mass (even in a black hole) distorts time and space such that it is impossible to know whether two signals at a distance are simultaneous. As a spaceship approaches the speed of light time distortion slows down time aboard the ship although the passengers are not aware of it. A twin returning to earth after such a trip may in fact be younger than a sibling based on their identical (atomic?) watches. The time distortion within a black hole is so great that time virtually stops relative to a watch outside the black hole.

2006-09-06 07:06:46 · answer #2 · answered by Kes 7 · 0 0

"Black Holes" have a problem with their existence in our universe. Were you to check out mass acceleration within our planet 0.716 miles from its very center, you would find that the mass would be accelerating to a speed greater than that of light. Mass is not supposed to exceed the speed of light. So, in order for this situation to be consistent with the formation of black holes, there should be one that had formed in the center of our planet. This would be especially true of our sun, where at a distance of 400 miles from its center a mass would be exceeding the speed of light, if it were able to be released in that location and free to move.

http://360.yahoo.com/noddarc "The Problem and Repair of Relativity" is a short writing that explains the problem of their existence.

2006-09-06 12:26:09 · answer #3 · answered by Anonymous · 0 1

oh man, good question. i don't even know where to start, i just sat here for twenty minutes trying think of how to explain this new concept that has come about

2006-09-06 09:44:51 · answer #4 · answered by shotgunsherriffs 3 · 0 0

take it easy, next time there one created i will add yours in my watchout list!

2006-09-06 06:22:21 · answer #5 · answered by Hardez 3 · 0 0

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