Exploring Time's Mysteries: Questions on Time and Gravity

[lowing99]

Hi

A few questions on time, I am hoping for some help with.

As I understand it time stops at the centre of a black hole / singularity.

Would the reverse be true, if the universe had no energy or mass to slow time down, would time flow at "true time" or at it's maximum rate? (Assuming you were able to experience it.)

If yes does this imply gravity has a drag effect on the rate of time?

If both questions are yes does this mean that time could move in waves, caused by ripples in the rate of time where gravity was present ?

best

Colin

 

[Kevin_Axion]

Time is on the basis of reference points. Time to someone at a singularity is the same, they don't experience time dilation in their reference frame but someone observing them would see time stop for person falling in. At the event horizon they would see time stop for the person falling in but the person itself would see time as if it weren't being disturbed by a gravitational field.

 

[lowing99]

Time is on the basis of reference points. Time to someone at a singularity is the same, they don't experience time dilation in their reference frame but someone observing them would see time stop for person falling in. At the event horizon they would see time stop for the person falling in but the person itself would see time as if it weren't being disturbed by a gravitational field.

My apologies I should have said from the observers point of view, my above question assumed the pov was the event horizon. What would be your thoughts on my question from this perspective?

Best
Colin

 

[relativityfan]

Hi

A few questions on time, I am hoping for some help with.

As I understand it time stops at the centre of a black hole / singularity.

sorry, I disagree. I believe time stops at the event horizon but not at the singularity, for a coordinate observer.

 

[Kevin_Axion]

As I said it wouldn't stop for the person at the singularity it would flow in that reference frame similar if they were in a true vacuum without energy densities. But a person observing them would see it stop for them at the event horizon. It's in special relativity, everything depends on perspective.

 

[lowing99]

sorry, I disagree. I believe time stops at the event horizon but not at the singularity, for a coordinate observer.

Hi RF would it not slow down gradually between the EH and the singularity coming to a stop at the singularity? (From an outside observers viewpoint) best Colin

 

[lowing99]

As I said it wouldn't stop for the person at the singularity it would flow in that reference frame similar if they were in a true vacuum without energy densities. But a person observing them would see it stop for them at the event horizon. It's in special relativity, everything depends on perspective.

Hi Kevin

So in a true vacuum watching a distant spaceman, time would run at it's maximum rate for the distant spaceman from the observers POV, is that correct? (assumes both spacemen's mass do not affect it)

Best

Colin

 

[relativityfan]

Hi RF would it not slow down gradually between the EH and the singularity coming to a stop at the singularity? (From an outside observers viewpoint) best Colin

from what i know: an observer can not observe what is inside a black hole but one can compare mathematically clocks. time stops at the horizon, for that observer, and then it accelerates in an imaginary direction, decelerates to stop again at the cauchy horizon, then accelerate more and more towards the curvature singularity, that is repulsive(antigravity), if you just use mathematics. so the singularity(antigravity) is like the opposite of the event horizon(gravity). I am writing about a charged or rotating black hole

 

[lowing99]

from what i know: an observer can not observe what is inside a black hole but one can compare mathematically clocks. time stops at the horizon, for that observer, and then it accelerates in an imaginary direction, decelerates to stop again at the cauchy horizon, then accelerate more and more towards the curvature singularity, that is repulsive(antigravity), if you just use mathematics. so the singularity(antigravity) is like the opposite of the event horizon(gravity). I am writing about a charged or rotating black hole

Hi RF

Thanks for the info

best

colin