Ok, I have a question...if you could stop time, or if time stopped, would gravity stop, too? Because in movies, (I'm not saying movies are always right ) whenever time stops, water and stuff freezes in midair, but the people can jump through it and land on the ground. (Of course, it might be that gravity is always there, but it doesn't...act on you...if...time is...stopped? I don't know. What do you think?

hmm, afaik the only way to stop time is to use gravity.

That seems like a problem, but it's not. It doesn't really have anything to do with gravity. Water would stay in the air because that is where it was when time was frozen. If gravity had an effect on it and brought it down, I think that would mean time wasn't really frozen.

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hmm, afaik the only way to stop time is to use gravity.

 

First of all, does "afaik" mean afraid? Second of all, what the crap do you mean? Use gravity to stop time...?

afaik = As far as I know.

gravity is bent space AND TIME. in fact, time bends more than space. in a black hole, time should have no meaning.

If time is stopped, the objects can't move. Time is not moving, so nothing happens in that point in time.

You wouldn't be able to tell. If time stopped everything would be frozen, nothing would fall, so gravity ceases to have meaning.

If you could stop time the way it is done in the movies, where time stops for everything else, but you're still able to move: if you jump in the air, would you fall back down to the ground, or would you be weightless.

 

I don't know if you would even be able to move like the above at all. If time is stopped, wouldn't everything be at absolute zero?

'']You wouldn't be able to tell. If time stopped everything would be frozen, nothing would fall, so gravity ceases to have meaning.

 

I know that, I just want to know if you think that the gravity would still be there, even if it wasn't affecting anything.

If time is stopped, wouldn't everything be at absolute zero?

 

No. If time stops, nothing changes. It wouldn't be absolute zero because that's not what it was when time stopped.

Exactly!

If gravity can stop time, is it proportional? If you lived on the moon, would time pass faster than here on Earth?

If gravity can stop time, is it proportional? If you lived on the moon, would time pass faster than here on Earth?

 

Yes. The gravitational redshift is linear in g.

Yes. The gravitational redshift is linear in g.

 

(to first order, at least)

 

_{OK, I hit reply instead of edit. Oh well.}

If you lived on the moon, would time pass faster than here on Earth?

 

Even if it did, the more important question is, would you know that it was faster? Conscience is a weird thing... If there was less time in 24 hours on the moon than here on Earth, would you be sped along with it?

 

Not that I even pretend to know anything about relativity or gravity's effects on time. Just an interesting question.

Yes. The gravitational redshift is linear in g.

 

So, if time passed slower on Earth, we would live longer than if we were transplanted to a planet that has lower gravity?

So, if time passed slower on Earth, we would live longer than if we were transplanted to a planet that has lower gravity?

I think it depends on your perspective, if you are on Earth and observe the person on the other planet, they wouldn't appear to live as long, but if you were that person I don't think it would make a difference.

I think it depends on your perspective, if you are on Earth and observe the person on the other planet, they wouldn't appear to live as long, but if you were that person I don't think it would make a difference.

 

Well how would that work?

 

If I had a twin and he lived on Mars, he would appear to not live as long as I, so when he died, I would still be alive, but he would not notice that he was dead?

Well how would that work?

Relativity.

If I had a twin and he lived on Mars, he would appear to not live as long as I, so when he died, I would still be alive, but he would not notice that he was dead?

He would only appear to be dead to you because time is moving faster for you. I'm not sure, but I think they would be living in your past, since time is moving slower for them. To your brother, and anyone else on Mars with him, he wouldn't be dead yet. You would be in his future, so it wouldn't be that he didn't notice that he was dead, but that he wasn't dead yet. Time is relative.

Relativity.

 

He would only appear to be dead to you because time is moving faster for you. I'm not sure' date=' but I think they would be living in your past, since time is moving slower for them. To your brother, and anyone else on Mars with him, he wouldn't be dead yet. You would be in his future, so it wouldn't be that he didn't notice that he was dead, but that he wasn't dead yet. Time is relative.[/quote']

 

OK, so if we left a clock on the moon and went back in a year or two, it would show a different time that another clock left on the Earth?

OK, so if we left a clock on the moon and went back in a year or two, it would show a different time that another clock left on the Earth?

If gravity affects time that's right.

If gravity affects time that's right.

 

Well I don't recall reading anything about any such experiments in the papers.

Well I don't recall reading anything about any such experiments in the papers.

 

Happens all the time, though, if you use GPS.