Turning back time

[Jokee]

Re: Turning back time

All right. I've been thinking about... what if I had a sort of magic clock or something that I could turn back time with?

Would I dare to use it then... 'Cause I don't think you can "remember the future". I mean, if I turn back time, I wouldn't remember that I had done that. And then I would probably turn back time again, at the same time I did it last time. And then again... and again... And me, and everything else would be stuck in some kind of "time trap" where the same thing happens over and over.

Of course, noone would notice, cause noone would remember the future, but it's still kind of scary. What if you never could live your life fully :S And what if this actually is happening now, time turning back over and over. Maybe I've written this message... like 400 times by now? It doesn't hurt me, since I don't know but... what if?

Thecnichally you would remember that yo went back in time because, when you go back, you go back in world's time, and that's YOUR future. So if that's your future, after you travaled back in time you remember your past...











Here's a lil' time paradox:


The ball down the picture is going toward Port. 1, wich transports it in its own past, getting out of Port. 2, but if the ball that went back in the past hits the ball that was going to Port. 1 before it gets in it, it will deviate from its path and never enter Port. 1, but if it never enters Port. 1, it can't hit itself, so it will enter the Port. 1...

[MixMasterLar]

Re: Turning back time

You can turn back time! But not in that way.

In this universe, there is time, and for every moment of time, particles will be at some place. To go back through time, what you must do is bring all those particles to the position of that moment in time and you'll have technically, gone back in time. =\

I hope that makes sense. It's just my take on it.

~Tsugomaru

Maybe I didnt get what you were saying, but if you did that, wouldnt all that would happen is that Time would repeat itself?

I ask, are we defining "time travel" as in the same thing happening again da ju vu; or like Cavernio said, it's more of a Back to the Future deal?

[tsugomaru]

Re: Turning back time

It literally is recreating that point of time. Time is not set, so it might not be Deja vu at all. People can make different decisions and such.

~Tsugomaru

[slipstrike0159]

Re: Turning back time

If i could travel in time the way everyone thinks about, then i am almost absolutely positive i would have undid a couple of gianomous mistakes i have done. So... in the future i myself would have already gone back before right now, changed it, and it wouldnt have happened. Then again its all science fiction in that fashion and it would be nearly impossible at least for me.
The idea of using a particle accelerator to excite every particle in your body so that they moved extra fast wouldnt work either. If anything it would be like how einstein (i think) described it which would be that it would seem like everything else was moving twice as slow as you. All that would really do is make you very old extra fast which no one wants.
Conclusion: Time travel as we think of it is very improbable and almost definitely impossible.

[MixMasterLar]

Re: Turning back time

Conclusion: Time travel as we think of it is very improbable and almost definitely impossible.

Yes. I agree

But what exactly is "Time"? we've yet to define it....pehaps then we will understand the thoerys better?

[slipstrike0159]

Re: Turning back time

We use the word time to measure the aging of life and the things on earth. At least thats what ive been told, but basically it is all biased because of the planet we were all born on. I guess if you were born on a different planet with a faster/slower rotation then you would have a different concept of time and different ways to measure it but as it stands we use it to divide up pieces of the past, present, and future to stay organized.

[MixMasterLar]

Re: Turning back time

Good, so we've all agreed you cant Time Travel like Marty McFly.

If time is just a measuring tool we use then the idea of time existing is off. I however, cant help but think of what the Bible says in Revolations "And there will be time no more"

[sherbtail]

Re: Turning back time

Ooh interesting, there was an article in New Scientist about time travel a while back. And while it wasn't about humans time travelling, neutrinos time travelling is still pretty impressive. The article is online but unfortunately you have to subscribe to New Scientist to read it and I subscribe through school so don't have access to the online issues which is annoying or I would tell you the basis of the experiment, it was in September or something so I remember very little...
but you might be able to google it, they're doing it at Fermilab

Grr im angry at myself because I can't remember it... but basically they had devised an experiment where neutrinos fired from one side of the world could reach a sensor at the other side of the world before they had ever been fired...

However it said at the end of the article that although technically it could work, it probably wouldn't because most physicists believe there is a fundamental universal rule that prevents time travel

[MixMasterLar]

Re: Turning back time

sherbtail, that's pretty crazy right there, when I have alot of time I'll google that.

[Jokee]

Re: Turning back time

Yeah Sherb I read this magazine, it was very interesting...

[RandomPscho]

Re: Turning back time

The rate at which we base our time system on is based upon the roatation of the earth. Time itself wouldn't speed up on a different planet, just the rate in which it is measured (that is if they measure it based on the rotation/revolution of the planet, like we do).

[sherbtail]

Re: Turning back time

Really Jokee? its my favourite magazine...ever... because I'm cool like that

MixMastarLar, I tried googling it and there is very little information apart from the New Scientist website but maybe you'll have more luck than me, I didn't look very thoroughly

[slipstrike0159]

Re: Turning back time

The rate at which we base our time system on is based upon the roatation of the earth. Time itself wouldn't speed up on a different planet, just the rate in which it is measured (that is if they measure it based on the rotation/revolution of the planet, like we do).

You misunderstand, i merely meant that from our perspective it would be faster or slower which would then do exactly as you described being that the rate would be measured differently (which was what i was TRYING to say)

[waffydude]

Re: Turning back time

I don't really have time to add much to this right now, but I think some of you may find some value in looking up time dilation, block time, and relativity. None of it's gonna claim that you can definitely go back in time or anything, but if you're unfamiliar with the stuff you may find it surprising and fascinating (at least, I did when I first learned it).

It may break you out of the typical commonsense perception of time, which is really necessary if you want to think about this more like today's physicists do.

[Kiro51]

Re: Turning back time

"Turning back time" is impossible.

We would need to build a machine, or do something, that would "remember" the past, and then move everything in the world to the place it was before.

Impossible >.<