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Is it true or possible, That Time Slows Down as You Get Closer to a Black Hole?
Have you heard the theory, im not sure if someone has actually proved it though. Thanks
9 Answers
- RadzewiczLv 61 decade agoFavorite Answer
Yes, time "slows down" in a gravitational field and it slows down more in a stronger gravitational field.
Since a BH generates as strong a gravitation gradient as possible, one where the escape velocity exceeds the speed of light, time dialation is also extreme and in fact time passage appears (to a remote observer) to slow to zero at the event horizon.
Not to the person approaching the field, but to an observer far away and unaffected by it.
So if you are in a rocket headed into a black hole, nothing about time will seem abnormal to you, your time will still pass in the most ordinary way as you see it, even as you experience the huge gravitational gradient. But if someone were observing you from far away on earth, you would seem to be running slower and slower to them. If you radioed them your radio frequency would get slower and slower.
Also, for comparison, time is slowed down on the surface of the earth a small but measurable amount, from the passage of time in a GPS satellite high above the earth. This is true because the g-field is stronger on the surface on the earth than 100 miles above it.
So, in fact, it is necessary for a GPS satellite to make a correction for the relativistic changes in time due to both *reduced gravity* and *relative motion*: These are two different effects, in this case both are changing timeflow.
And, again, in fact, if you take an accurate high speed electronic counter up a 100 foot tower for a while, then bring it back down to earth again, and compare it with one that stayed on the ground, you will find that it counted off a few more nanoseconds than the one that remained on Earth due to the reduced gravitational field. This experiment has actually been carried out and verified, you can calculate it based on height h: t’/t = 1 – gh/c^2.
A strong gravitational field (or equivalently, a strong acceleration) has the effect of slowing down the passage of time as compared to an observer in gravitational free space (space with less gravitational gradient). This is an outcome of *general* relativity.
FYI, the other time dialation effect is caused by constant, relative velocity: That one is an outcome of *special* relatiity.
Read about gravitational time dialation here:
- Anonymous1 decade ago
Yes, it is proved. It is a logical deduction from the assumptions that (1) physics is the same everywhere, (2) the speed of light is invariant, and (3) that gravity and acceleration are locally indistinguishable. From these postulates, you can prove that a clock near a black hole runs slower than a distant clock. In proving this, you have generated the Theory of General Relativity.
That is the ONLY sense in which things are "proven" in science: and the result is a THEORY. Perhaps you were asking whether there was empirical support for this, but if you were, then you need to learn more about the scientific method.
- Anonymous1 decade ago
Yes time slows right down as you approach very close to a black hole. If someone was watching here on Earth as you were entering the black hole from Earth you would forever appear to be stuck in 1 spot unmoving.
- eriLv 71 decade ago
Yes, it has been proven. As you approach the speed of light, time slows down for you. This is part of Einstein's Theory of Special Relativity. Falling into a black hole would accelerate you to the speed of light, so time would seem to slow down and then stop. Look up the experiments of Gravity Probe A to see experimental evidence that Einstein was correct.
- ElectronherdsmanLv 61 decade ago
Kinda, it all depends upon your perspective.
First black holes in and of themselves do not alter the passage of time. If you were to 'fall' into a black hole your would accelerate. As you moved faster, the passage of time would not change from your perspective. To an outside side observer, time would seem to 'slowdown' for you and remain constant for the observer. The outside universe would seem to 'speed up' from your perspective.
This has been proven. Highly accurate clocks placed on space craft traveling at high speeds seem to 'slowdown' relative to 'stationary' clocks here on Earth. These effects are hardly noticeable until you achieve a significant percentage of the speed of light.
It doesn't have anything to do with gravity. It all has to do with velocity. Of course it is hard not to remain at a constant speed close to a huge singularity.
- RaymondLv 71 decade ago
Actually, what the theory shows is that we, from our frame of reference (away from the black hole) will see objects near the event horizon behave as if time was flowing much slower for them (and, in theory, stop as they reach the event horizon itself).
From the frame of reference of the object, perceived time still flows normally. If you were in a spacecraft approaching an event horizon, you would perceive the rest of the universe as suffering a change in time flow. You would feel yourself to be normal (until you got close enough for the gravitational differential -- i.e., tidal effect -- to make you, let's say, less normal).
- jarnaginLv 45 years ago
ok--the main "radical concept" of a black hollow is that it even exists--get previous that, and something is way less perplexing. under Newtonian mechanics and assuming gentle has no mass, there ought to not be black holes. At worst, we might purely have a great-dense famous person. despite the fact that, Chandrasekhar confirmed from Einstein's standard Relativity equations (that have been properly examined by using fact) that a lifeless famous person with mass greater desirable than a undeniable quantity could crumple without shrink (by using fact the stress of gravity is enhanced than any stress combating contraction, consisting of the electromagnetic forces that reason solids to be "good")--it collapses not purely to a small sphere, yet to a factor (it relatively is the place uncertainty is obtainable in, yet that is resolved via a validated Quantum Gravity concept) must be something from 0 length as much as Plank length (with i think of is one divided via a million with 34 zeros, of a meter--must be 40 3 zeros). it relatively is plenty smaller than a hydrogen atom, say. the comparable standard Relativity that predicts this predicts all the different issues--infinite redshift of light from the form horizon (the exterior for the time of which all guidelines shifting forward in time might desire to factor in direction of that singular factor contained in the middle, by using fact under GR, spacetime is relatively bent around a black hollow), slowing down of an interloper's concept of time (nevertheless to a minimum of one falling in, they become responsive to no slowdown in time), the alternating stretching and compressing at ninety degree angles as you techniques-set the singularity (and the guidelines save changing, so at some places, you're stretched or compressed in "time" relatively than area) and at last you attain the singularity and you're relatively not component to the universe anymore--you do not exist. upload to this Quantum Mechanics, it is likewise properly-examined, and we've that a black hollow might desire to radiate, very slowly (Hawking Radiation).
- 1 decade ago
yes because E=mc2 suggests that any thing that goes faster than light goes in the past.Light bends near a Black Hole.this suggests that the gravity there is so high that the object may move faster than light and go back in time.
- 1 decade ago
time was invited by mankind! in the universe there's no time! the time exists just for living beings from earth
and that black hole theory was proven,i saw it on discovery science channel about 2 years ago