time travel

[Shinja]

thought yall might found this interesting, and yall phisics and engineering majors might have fun disgussing the concepts of time travel.

http://www.johntitor.com/

[Mr_Anderson]

thats freeky

[PotBelliedCow]

I just read the intro...yea it is freaky and kinda eerie too...especially the prediction there's a huge world war in 2015 that'll kill 3 billion people...

Of course it could just be a prank, but still, it's interesting...

[Inferno]

thats freeky

Yes very freeky!

[Mangafanatic]

Total hoax. Gotta be.

I mean, think about it people. If you had a time machine, you'd go back and buy yahoo or something-- not mess around with a few simpletons on a message board.

Seriously, if this guy were a time traveler, he think way too small. Besides, you know if there were such thing as time travel, millions of time traveling humanitarians would have come back to stop wars, famines, wild fires, ect.

Plus, I don't know because I'm no physics genius, but-- you're sitting here reading my post. That means time is passing you right now, and we believe it was possible some guy from the future came back and posted a bunch of stuff. For that to even be possible all time would have to exist simultaneously. Or something like that.

[Ashley]

Anyone else feel like they're living in the movie K-PAX?

Seriously though, I'm really skeptical for a number of reasons. First off, how hard would it be to pull something like this off? People can, and do, pretend very convincingly to be a number of things online. And from the sounds of it, all this guy did was say he was from 2036, make predictions so far in the future no one could prove him wrong while he was still "here" (or alive), and make a few sketchy, vague statements that some believe sound like a 21st century Nostradamus (9/11, Columbia, etc.) I say this guy is in an apartment somewhere, smiling to himself and thinking how well he got everyone that believes him.

And those pics...I mean, really, I know people that can photoshop things like that down to the poor quality and grainyness. It's entirely possible, and I say plausible, that this is a total hoax.

And ok, let's theorize for a moment time travel IS possible. Hasn't the point of all the time-travel movies been that time travel should be forbidden? Even stepping on a bug or breaking a blade of grass would have/could have monstrously different consequences no one can tell. I could go into theories explaining this, but we're all smart cookies here and can understand that sort of stuff. So call me a doubting Thomas, but I'm calling this Nostradamus-K-Paxian on the rug and calling it a hoax.

Just my two cents, of course.

[Shinja]

well the thing i have is, if its going to happen then going back in taime wont make any diferance, since you obviously went back in time before it happened. time travel may be posible someday but God is still in control of what happenes, in a way he has already written down the future cause we can read about his return in the Bible, but im sure its a hoax, but its the best one ever,

[Zedian]

I say time travel is feasible but ahem...on a purely theoretical standpoint. Of course we would need a ship that can travel at extremely blistering AU per revolution. And then there is the old "Grandfather" theory, which kinda works like a paradox. You know, you do something wrong in the future or past and alter the existence of someone....hey like Chrono Trigger. Of course when I say it's possible I mean only traveling to the time-thread of the past, since the future doesn't exist how can anyone travel in time back there ? And if so, the past would be more of a still-image, not really moving in real-time...err I'm confusing myself here.

I've studied vaguely the study of Quantam Physics and the Super String Theory but lack the knowledge to further explain anything other then random and fragmented rambling.

Oh and this guy...isn't it kinda strange how his name is John, like John the revelator, the great author of Revelations. In any case, yeah like Ash said--he's probably in his living room, in nothing but boxers too (Gross) laughing at all those who believed him.

[Straylight]

Looks like a nice piece of modern mythology to me.

[samurai1986]

Have you ever heard of the bible code?

[kaji]

LOL

That was hillarious!!!

ah, let me catch my breath....ah

Time travel is great, it has actual been invented in the past, several times to be exact. But no one has ever built the mechanism to accomplish time travel for a couple simple reasons:

#1 Cost: Woah, do you know how much it costs to build one space shuttle? Yah, muliply that a couple times.

#2 Uber dangerious: Think about breaking the sound barrier, boom right? Shake / break some glass, scare some cows, not to bad. Ok, now break the flow of time...Yah, BOOM. (This is, of course, if you are trying to tavel backwards.) Not to mention the extreme amount of friction generated while ataining the nessisary velociy.... If you passed inside the earths aptmaphere you would light the whole place on fire. Not to mention your self.

#3 Sorry, but it is impossible to travel backward in time. The only method of time travel is to move forward. And lets face it, thats not very cost effective. What would be the point, other then personal interest? Even if you did get there in one peice, then what?

#3.5 Control, you just cant control where you go. Now if only you could do some tests, but every thing you send can never come back (untill you catch up to it..), so you never really know where it went. Or how to control your own trip.

Well, thats basicaly why Im stuck here. ^^

Oh, if you want to really travel throught time, chech out Chriogenic Freezing. Its basicaly the same thing, and a lot less expensive.

[The_Marauding_Maniac]

I am reading a book onhow to build a (theroretical) Time machine. It say that MAYBE if you could exceed the speed of light, youcoud be transferred back in time. Or if the universe was spinning you could go to a spinning body with big mass rotating the opposite direction. Or since Gravity sends time forward, anti-gravity could send you back! One more. Maybe if you could go into a Worm hole.....

[Straylight]

Have you ever heard of the bible code?

I've heard of the code, but to be honest I don't think any of it is true. There's a parody of it where a bunch of stat scientists find codes in the Hebrew version of "War and Peace" somewhere on this page:

http://cs.anu.edu.au/~bdm/dilugim/torah.html

I still read about this stuff though, it's pretty entertaining.

[kaji]

Have you ever heard of the bible code?

Wasnt that a movie? The Omega Code? (or something like that)

[Saint]

Well since we know it is possible to travel into the future. (Like on the small scale of the Mir cosmonaut, who after his year(s) of duty on the space station was .003 seconds ahead of the time of people on the earths surface). So if you could travel at the speed of light for a long enough time, then you would travel "into the future." Actually its just that time would be moving differently for you than for the others not moving at the speed of light.
Maybe someone could travel back in time. Yet since the speed of light is as fast as possible you have to find other ways to gain speed. One idea is to travel at the speed of light in an area where Space is bent, such as the area around a black hole. So while you are traveling at the speed of light, thanks to the bent space it seems even faster to those outside of the bend. That is one "possibility" for traveling BACK in time. So I guess in formulas it is possible, but will we ever have technology to travel at the speed of light, and in an area of bent Space?? Really I don't think so...
There is a scientist working on sending subatomic particles back in time. I watched that program on Discovery late last year. Interesting, but I don't see its impact or importance to my life really.
Still it is soo interesting to learn about this universe that God created and marvel at how it works.

[mechana2015]

Hmm... the guy said the time machine worked on singularities.

sin·gu·lar·i·ty A point in space-time at which gravitational forces cause matter to have infinite density and infinitesimal volume, and space and time to become infinitely distorted.

O.o that sounds dangerous... playing with a black hole (which is basically what that is). If General Electric ever gets a hold of one of those I'm gonna be runnin' for the nearest galaxy to avoid being obliterated with the rest of the earth.

[kaji]

So if you could travel at the speed of light for a long enough time, then you would travel "into the future." Actually its just that time would be moving differently for you than for the others not moving at the speed of light.

Light? What? Are you trying to say that light, its self, transends time? If you could travel at the speed of light, you would just be really far away, really fast. (seat belts required)

(Like on the small scale of the Mir cosmonaut, who after his year(s) of duty on the space station was .003 seconds ahead of the time of people on the earths surface).

True, but his differance in time was not a physical one, it was a social one (for lack of a better word). He was not really older, perhaps as 'clock time' is conserned he was, but not physiologicaly. Hmm, how to explain this?.... His heart did not beat more then it would have on earth. He never steped out of 'time', so he could have never really moved throught 'time.'

One idea is to travel at the speed of light in an area where Space is bent, such as the area around a black hole. So while you are traveling at the speed of light, thanks to the bent space it seems even faster to those outside of the bend. That is one "possibility" for traveling BACK in time.

Right right, (the speed of light thing aside) assuming time existed as a liniar force, where the fastes way from A to B is a straight line (demonstrated by the normal flow of time). Now if that line were bent, or better yet looped (or a giant spiral), then you might be able to move from point A to B by 'jumping the gap.'

A black hole would seam like the ideal location of such a gap, but questions may come to mind, such as: "How will you survive being crushed? Or once you have jumped the gap, how do you land on the other side?" Not through another black hole, no way, it might be easy to get in, but not get out. Then, is there an oposet to a black hole, aka: the other side? Like a giant fountain Hmm.

Well, that's why we use worm holes, they are a lot safer, and dont have that crazy CRUSHING effect...

[Technomancer]

Unless one buys into the "many-worlds" hypothesis, I don't see time travel working (and in any event there is no good theoretical reason to believe it can be done). The problem of paradox seems to be a significant hurdle.

Travelling really fast won't do much good, since it is impossible to accelerate past the speed of light. At least if the theory of relativity is correct. You could travel forwards in time so to speak, since via time dilation, you will experience a shorter span of time than those not moving relative to you, but this is of dubious value since you can't go back.

[righteous_slave]

Sounds to me like someone had waaaaaaaay too much time on their hands to come up with all this hooey.

[The Mad Hatter]

time is really easy to manipulate. in fact, we're sorta doing it right now. time will pass more slowly for someone at a higher altutude than someone at sea level, since something further out on the radius of something spinning travels faster than something closer to the center. of course, this isn't really time travel.

all the formulas for time dilation and length contraction and stuff, based on einstein's theory, have the square root of 1-(v^2)/(c^2), v being the velocity of an object, and c being the normal speed of light. if v exceeds c, you'll end up getting an imaginary number. we have no clue what would happen if your dimensions involved imaginary numbers, but as far as we know, it's impossible to surpass the speed of light. as your speed increases, your mass also increases. it would take an infinite amount of energy to accelerate matter all the way to the speed of light.

wormholes are another issue, but I know nothing about them, or if they can even appear.

edit: sorry...I hadn't read technomancer's post. oh well...

[Saint]

Light? What? Are you trying to say that light, its self, transcends time? If you could travel at the speed of light, you would just be really far away, really fast. (seat belts required)

That’s exactly what I used to think myself. However, as others have stated, Einstein pretty much showed how "traveling into the future" is possible.

You can have this better explained on PBS's website for the show NOVA.
Click, click.

As for the rest of what I said about traveling back in time, that isn't proven but it is being researched. Either way I find it all interesting.

[Azier the Swordsman]

Time travel is impossible. Time itself does not exist. It is only a measurement. Heck, I could just as easily pull off something like this myself.

I don't doubt, however, that the near future is going to be filled with absolute war and terror, Jesus is about to come back for his people. And for those remaining on Earth, there isn't any human being who could even dream up the horrors that are going to take place.

[The Mad Hatter]

Time itself does not exist. It is only a measurement.

not exactly; it exists just as much as any other dimension.


and yes, assuming I understand this correctly, light does trancend time. see, normally, if someone throws a ball forward out of a car, the velocity of the ball seen from someone inside the car isn't that great. but to someone beside the road, the velocity is that of the car plus the velocity the guy in the car perceived. with light, however, the speed will be the same to both viewers - it's always the same, no matter what your reference point is.

edit: ahh jeez...I missed it again...I forgot to look at that site before replying. so now I basically repeated what the site said...

[Zedian]

Well the whole perception the guy has in the car would be dimmed at a lower rate since he is moving at a faster speed whereas, the guy on the side of the road is moving at a much slower rate, thus causing him to have a better glimpse of the ball. The ball's originating point which was the guy in the car was thrown at a much faster velocity therefore it ended up at the destination quicker. That destination point would be the guy on the side of the road. But alas, the destination or target if I must say already existed.

This leads to my belief which I know isn't fool-proof and I'm sure is open to erroneous issues. But how can an object rather it be a ball or a person, in spite of traveling through insane levels of speed and velocity reach it's destination if there is none. Thus, I take into consideration that travel into the future is technically impossible, why ?

Because the future doesn't exist...now unless there is the such thing as a 'predestined fate', how can a thread of time seem to exist if it hasn't come to be. Sorry but I don't think God created the world with everything laid out, even though He gave us a divine destiny to carry out, I don't believe that God weave together that linear of a life for us to follow. So in closing, I can see the travel back in time more feasible then the future. But again, I don't expect to be right here, this is all just simply based on my own self-thought speculation.

Oh and um...wormholes, I never studied much on them. Can anyone give a lead on to what they are again ?

[glitch1501]

i read alot of this site, it is a very interesting read, unfortunatly i dont think it is true

[kaji]

The ball's originating point which was the guy in the car was thrown at a much faster velocity therefore it ended up at the destination quicker. That destination point would be the guy on the side of the road. But alas, the destination or target if I must say already existed.

Exactaly, but not because the future does not exist, but because you are traveling with in the physical world. If you do not leave the time you exist in you can never move to a future one.

The simplified version of time travel to the future is to 'step' out of time and let it flow by, then return. You never move, time moves around you. Thats it. Then you are not really traveling to the future, it is (in a sense) traveling toward you.

[Straylight]

As far as "time travel" to the future is concerned, and Einstien, it's already been proven using atomic clocks and spacecraft.

If you could launch a very fast space ship and then return to Earth later, you'd be able to move forward in time quite a lot, but you'd need to approach the speed of light..

If you think about it, everyone is travelling forward in time, but it is possible to increase your speed. The past is the most scientifically infeasible direction to be travelling, as time only moves forward.

[Mangafanatic]

*brain explodes.*