What would happen if someone was sucked into a black hole?

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SUMMARY

This discussion centers on the effects of black holes on individuals who fall into them, emphasizing the differences between small and large black holes. A small black hole will subject a person to extreme tidal forces, resulting in "spaghettification" before reaching the event horizon, while a larger black hole may allow a person to cross the event horizon without immediate harm, although they would eventually be pulled into the singularity. The event horizon is described as a coordinate singularity, existing mathematically rather than physically. The conversation also touches on the speculative nature of black hole theories, including holographic theory and the potential for black holes to evaporate over time due to Hawking radiation.

PREREQUISITES
  • Understanding of general relativity and its implications on time and space.
  • Familiarity with the concept of tidal forces and their effects on objects in gravitational fields.
  • Knowledge of black hole characteristics, including event horizons and singularities.
  • Awareness of theoretical physics concepts such as Hawking radiation and holographic theory.
NEXT STEPS
  • Research "Hawking radiation" and its implications for black hole longevity.
  • Explore "holographic theory" and its interpretations regarding black holes.
  • Study "spaghettification" and tidal forces in the context of astrophysics.
  • Investigate the properties and formation of "supermassive black holes" in galaxies.
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Astronomers, astrophysicists, students of theoretical physics, and anyone interested in the complexities of black holes and their effects on matter.

  • #31
someGorilla said:
I guess this idea comes from the fact that free fall maximizes proper time. But it doesn't apply here! Free fall from A to B (points in spacetime) is the longest path between A and B, but if you fire your rockets you will land in C (elsewhere on the singularity).

This paper is interesting: http://arxiv.org/PS_cache/arxiv/pdf/0705/0705.1029v1.pdf

Thanks for the reference. It completely contradicts the statement that we've been discussing and to me sounds MUCH more reasonable than that statement.
 
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  • #32
Antiphon said:
We'll never answer these questions until we send in a probe with a high-def camera and a scooper to retrieve core samples.

Yes, even light can't get out once you fall in; so we'll just lower half the probe through the event horizon then pull the data back up through ultrasonic waves on the tether.

I can't tell whether your statement was tongue in cheek or unwitting nonsense. Care to comment?
 
  • #33
phinds said:
Thanks for the reference. It completely contradicts the statement that we've been discussing and to me sounds MUCH more reasonable than that statement.

well, it doesn't completely contradict it. If you start from rest at the event horizon, freefall still gives the longest possible time, and any acceleration will make it worse.
 
  • #34
Some physicists have theorized that black holes are actually gateways to strange other dimensions, is there any evidence of that?
 
  • #35
Kutt said:
Some physicists have theorized that black holes are actually gateways to strange other dimensions, is there any evidence of that?

So, I take it the article itself, which I did not read, must contradict the summary paragraph, which I did read, which says pointedly:

In general, the use of such rockets can increase your remaining time, but only up to a maximum value; this is at odds with the “more you struggle, the less time you have” statement that is sometimes discussed in relation to black holes.
 
  • #36
Kutt said:
Some physicists have theorized that black holes are actually gateways to strange other dimensions, is there any evidence of that?
That would be a "no, there is no evidence that some physicists have theorized that Black Holes are actually gateways to strange other dimensions." Whatever that is supposed to mean.

This question is actually answered more completely in many of the references already provided to you. If you are not going to read the replies, why should anyone bother replying?
 
  • #37
Which means this is a good time to end this.
 

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