Time Travel

[Rorick]

Ok, so Shaiyan and I were debating the idea of possible time travel, and I'm moving that debate over here.


Ok, yes ONE way is to travel faster than the speed of light, but that's only to go BACK in time. The faster you go in space, the slower time gets relative to the person. Knowing that, one can theorize that if you start traveling faster that the speed of light, one will begin to travel backwards in time. You say no one knows if wormholes exist, well at one time most people thought black holes were a bunch of hooey. I mean, a giant, invisible mass able to suck in something so fast as light? If we didn't know it existed today, we'd still think it was impossible. And even if Wormholes don't exist naturally, who's to say we couldn't synthesize them? We can create microscopic black holes with particle collider, if that's possible, why can't we create a worm hole?

[LordShaiyan]

Well I'm not saying we can't do it in the future,but at the present,we do not have the technology to do that.But then again,people are researching on this topic.Maybe 30-40 years later or maybe a 100 years later,they might be able to do it.You'll never know what happens in the future(well atleast at the present,in the future we may invent a device that can actually tell us what's going to happen in the future,but the chances are slim though)

[LordShaiyan]

And another thing is that,in theory it is described that wormhole is a shortcut to go back or forward in time.For example,A mountain.We all know that we can't reach the speed of light at present.So that means we'll have to go alot slower than light.Suppose there's a tunnel through the mountain and another road which is created around the mountain.So suppose youre going at 150 miles per hour speed around the mountain.And I'm going at 100 miles per hour speed through the tunnel.So basically,I would get to the end faster than you could.Because you'll have to go all around the mountain and I can go straight through.So if we enter a wormhole and restrict the light from entering it and make it go around the wormhole,we would get to the end of the wormhole faster than the light.So we can travel time in this way.But if the light also enters the wormhole with me,it'll beat me and It'll have no effect.

[LordShaiyan]

So basically there's a lot of thing to do and that is not possible at this time.

[Gangs]

This topic interests me and if my friends weren't nagging me to show em porn, i would reply now, await my reply eagerly and excitedly.

[king maguga]

Back in time to what? If people already died they are gone and we still live on the same land they lived on with some of the same buildings and some new ones.(to suggest that era's overlap) So are you understanding every era of time as a different dimension that has been by some means stored or compartmentalized so that you could somehow access them, and the people who died long ago would somehow still be living in that same era of time for eternity. if so what of the people who died in each era where did they go? also if you can go into the future ahead of what we understand as time then is everything already predestined to happen if so are our actions even relevant?

[Rorick]

@ Maguaga: Go over to the vending machine game, it'll tell you everything. And what I'm trying to say is that based on Einstein's theory of time, time and space exist on a plane known as space time. On this plane ALL of time sits in a single dimension, 4D if you will. It doesn't flow in one direction, if it did you wouldn't have the light speed effect on time, but instead is one dimension, only relevant to the person experiencing it. Going by that, all of time, past present, and future, could be accessed if one knew how create a rift or a worm hole of some sort in that dimension.


@ Shiayan: Actually, a worm hole is just a catch all for a hole going from one place on the space-time plane to another. So in all reality, if you'd enter a worm hole, you would have no idea where you would end up. You may still be in the same spot, just in another time, or perhaps in the same time, but in a different spot, or even still in a different spot AND a different time. You mountain tunnel analogy, while spot on for a space travel worm hole, isn't useful for the time travel worm hole. As said above, with a worm hole, depending on the type, you could end up anywhere in time and space.

Lets, for a minute, imagine that you were standing in front of a worm hole you knew was specifically a time travel worm hole. You know you'll be around the same place when, and if, you come out the other end, but the question is, what time will it be. It could have transported you 50 years in the past, 5 centuries in the future, you might not even have been transported at all. The tunnel and the path wouldn't meet up to test which approach was faster.

 With the faster than light approach, you could, with enough training and research, theoretically get to almost any time in the past you wanted, and, going slightly slower than light speed, get to the same distance in the future. If you want to stop time altogether, you'd just travel at light speed and live for eternity.

[LordShaiyan]

Yeah but that's not possible.We cannot travel faster than light and we cannot live for eternity.So,that's not possible.And yeah,about the wormhole thing,you'll never know where youre going.No navigation,no time,nothing.You'll probably end up 5 centuries in the past or future.

[LordShaiyan]

And another thing,you'll not be able to check that if youre in the past or future or stuck in the same place without doing anything.

[LordShaiyan]

It depends on the type.

[king maguga]

Ya what if you go back in time to a time before your method of time travel was invented ?....does the method you used to get there still exist or does it get uninvented when you arrive?    lol

[C-zom]

Too few people actually realize how time works. You can't go backwards, period, end of story. Its like driving backwards on the wrong side of a high way at rush hour.

[Rorick]

Too few people actually realize how time works. You can't go backwards, period, end of story. Its like driving backwards on the wrong side of a high way at rush hour.

It depends on which theory is right. If Einstein's theory about time is correct, where all time is encompassed in a single dimension(4D), then you could theoretically travel back in time. If one could make a dimensional rift in 4D then you could travel anywhere you want, so long as you were willing to take the risk in which you may never get back to your own time.

@Maguga: It depends on the method used to travel. If you used a dimensional rift or a worm hole it would depend on if you used some form of technology to make it or whether you simply happened upon it. The former you could take it with you, and so long as you had what you needed to power the sucker, you could get back to your own time. If you used the latter, you'd be stuck until you found the right rift/hole to get back.

@Shaiyan: If, and only if, we could get to the speed of light, time would stop completely for the person going at that speed. If you can keep up such a speed, you literally can live for eternity, because at the speed of light, time stops. Which give the theory that one will go backwards in time if going faster than the speed of light some solid ground.

As for what you last said about the wormhole, not knowing where you'd be going, I said that already. I do concede that you wouldn't know where you were without doing anything. It's just the general idea behind it though, that you could theoretically can go back in time.

[LordShaiyan]

Yeah right.But we still need to invent a device that can actually reach the speed of light.So,we should focus on that first.And I'm not sure if we could ever do that 

[Echorion]

Ok, so Shaiyan and I were debating the idea of possible time travel, and I'm moving that debate over here.


Ok, yes ONE way is to travel faster than the speed of light, but that's only to go BACK in time. The faster you go in space, the slower time gets relative to the person. Knowing that, one can theorize that if you start traveling faster that the speed of light, one will begin to travel backwards in time. You say no one knows if wormholes exist, well at one time most people thought black holes were a bunch of hooey. I mean, a giant, invisible mass able to suck in something so fast as light? If we didn't know it existed today, we'd still think it was impossible. And even if Wormholes don't exist naturally, who's to say we couldn't synthesize them? We can create microscopic black holes with particle collider, if that's possible, why can't we create a worm hole?

Ok. Before this discussion get's outta hand, I must step in, so it is my duty as a physics geek.

First of all, we would not create mini-worm holes with a particle collider. It would rather be more likely to create mass. Take CERN for example: They spin electrons (particles of electricty) and spin it an 97% of the speed of light. They accelerate it with strong magnetic fields, in a vacuum, in a tube that is called the LHC (Large Hadron Collider) that runs through, I think 3 countries. And it would be impossible to create a blackhole outof just the few electrons they are spinning around the cirlce there since - yes we all know it, but only a few of us understand it E=mc². That said, we would only be able to create little mass - and guess what! - they are not even looking to do that! Researchers at CERN are trying to find the Higgs Boson Particle, a theortical (so far) particle, that, they think will be created when they are doing, the above said.

And now to the issue of time travel. First problem is: Relativity. The faster we go, the bigger our mass gets. This cannot be observed when going 50km/h or even 1000km/h, but when going at around the speed of light our mass would increase exponentially, and thus (most probably) we would be crushed because of our own gravity - since F_g=G* M₁M₂/r².
Ok - let's say we are able to withstand our own crushing forces. What would we do? We would have to go faster then the speed of light to - catch up to past events!
imagine two racecars. One speeds away (light), and in order to catch up to it one would have to go faster the Car #1. And then again, we would have to go incredibly fast, and it would take ages to catch up with Car #1, since it is going at 3.8*10⁸ m/s, and we would have to go extra fast, since every second it travels another 3.8*10⁸ meters, and it would be far gone, when we start "driving".
And then, we wouldn't be able to "travel" back in time, we would only be able to look at past events, since we are only receiving the images from the past. And again - it would be incredibly hard to see everything, since we are, by then, incredibly far away from earth, and we'd see it as if earth would be a star - a very_very dim star. So we would also have trouble seeing it.

Last point about the speed of light. The faster we go, they higher the probability of colliding with particles in space. Space isn't empty, it has hydrogen atoms, etc. floating around in it. A single hydrogen atom that collides with a spaceship at the speed of light, would just blow the whole ship apart (just think of the forces!, or if you are simple minded of the momentum of the atom at that point!). Also, the slightest variation in direction would have you tumbling from the ship, because even a variation of one degree would slow your ship down by a crapload, most probably hurting you.

Lastly, wormholes don't exist. (As far as I know), and if they are supposed to make you go instantly to any point in te universe, the acceleration will kill us anyways.

And so ends the lesson. I can't think of anything of how to make time travel possibly possibly work right now. And wormholes are total crap in the first place, since they would NEVER EVER WORK, and they go against every physics principle out there. Sci-Fi writers can stick that one up their ass.

THE END (any questions?)

[LordShaiyan]

Yeah i told the same thing.People are not even sure if wormhole exists.

[Echorion]

@ Shaiyan               Yeah, well not really.

@Everybody else       I also don't see how to travel to the future. But going slightly less then then the speed of light, to travel to the future   makes no sense at all. None, nada, keinen, nillas, rien, mai mii, arigato, nii hau, Argentos.
If anybody has another "solution", you may come forward now, so I can shoot it down right away.

[Aaron J]

Its like driving backwards on the wrong side of a high way at rush hour.

That gives me an idea.

[bioakky]

k

[Pattara]

Researchers at the Rowland Institute for Science slowed light to 38 miles per hour in 1999,[clarification needed][1] and researchers at UC Berkeley slowed the speed of light traveling through a semiconductor to 9.7 km/s ( 21600 miles per hour) in 2004. This was in an effort to develop computers that will use only a fraction of the energy of today's machines.[2]

now you can (already?) go faster than light with normal car, and guess what? nothing happens.

we cannot go faster than light at the normal speed, but we already slow it down.

that's my theory.