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View Poll Results: Can you travel through time?

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  • Yes, definetly in the future

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  • No, we could never get the materials needed

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  • NO, it is physically impossible

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Thread: time travel

  1. #1 time travel 
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    there are theories going on that say you could travel though time. You couldn't get the circumstances to do it in almost all the cases, but some people say it is plausible... here are 2 theories:

    1. People say that you could take something with about 10 times the mass of the sun, roll it into an infinetly long cylinder, and spin it at about 80,000 times per second. Then, you plot a course around it, and you can go through time.

    2. Some people say that if you are transported through a wormhole, you could travel through time.

    Are ANY of these theories even remotely true?
    Can you TRAVEL THROUGH TIME?


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  3. #2  
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    1- Not being sure if your talking material or energy of the Sun, the sun is 99.5% of the total mass/energy in the solar system. Where could you get either to do the job.

    2- Worm holes if they exist, should have a Black Hole to feed on for energy. Getting to one would take a very long time.

    In both cases what would you supply the human with, to survive the forces involved.

    I'll go along with Einstein on this; "It might someday be possible to go back in time, but observing it is probably not possible". His formula for time slowing with velocity, does reverse time when C (speed of energy) is passed, but science says any mass to do this would require all the energy of the universe. Their way of saying 'its not possible'...

    There are some that feel, a machine could be built, probably in a stationary position to alter/warp the said time fabric...The age old question is, what could exist in our reality to another time, past or present.
    Also a couple on your worm hole, being self created by a space ship, but this involves space travel, more than time travel...


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  4. #3  
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    Time travel is simple. We do it every minute as we forge into the future. If it is possible to achieve necessary speed to "travel" into the future, you probably can't come back. Again, if you can reach proper speed, you could view the past. I just don't think you can any impact on it. Even if you could, you would probably doom your own existence.

    As for traveling through wormholes, you would, in all likelihood, be shattered into a thousand billion pieces. It would not be a pretty sight. If you could manage to survive the journey, which I highly doubt, there is no telling where you would end up. It would be the ultimate crap shoot. Chances of a return are nil at best.
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  5. #4  
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    Quote Originally Posted by uncommonman
    Time travel is simple. We do it every minute as we forge into the future. If it is possible to achieve necessary speed to "travel" into the future, you probably can't come back. Again, if you can reach proper speed, you could view the past. I just don't think you can any impact on it. Even if you could, you would probably doom your own existence.

    As for traveling through wormholes, you would, in all likelihood, be shattered into a thousand billion pieces. It would not be a pretty sight. If you could manage to survive the journey, which I highly doubt, there is no telling where you would end up. It would be the ultimate crap shoot. Chances of a return are nil at best.
    I asked you somthing in other topic will you reply?
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    In 1944, this creature rose from the swamp, with tremendous strength and some dormant memories that for example allowed him to speak English, but not knowing what he was, and not remembering Cyrus Gold or his fate. Wandering throughout the swamp, he encountered two escaped criminals, killed them, and took their clothes. When they asked him his name, he simply muttered that he had been born on Monday. Reminded of an old nursery rhyme about a man born on Monday, the thugs named the creature "Solomon Grundy".
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  6. #5  
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    Quote Originally Posted by uncommonman
    Time travel is simple. We do it every minute as we forge into the future. If it is possible to achieve necessary speed to "travel" into the future, you probably can't come back. Again, if you can reach proper speed, you could view the past. I just don't think you can any impact on it. Even if you could, you would probably doom your own existence.

    As for traveling through wormholes, you would, in all likelihood, be shattered into a thousand billion pieces. It would not be a pretty sight. If you could manage to survive the journey, which I highly doubt, there is no telling where you would end up. It would be the ultimate crap shoot. Chances of a return are nil at best.
    Yeah, the problem with falling toward a black hole is that your feet are getting pulled on harder than your head (if you're falling foot first), because even a small amount of distance changes the amount of gravity by a lot.

    That's why you'd get ripped apart before you ever made it through.
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    There are, of course, other theories. If you've ever seen the movie Primer, you'll be familiar with the limited time travel theory that some people are getting worked up about with the completion of the Large Hadron Collider which states that reverse time travel (travel backwards in time) is only possible from the moment the time distortion is created, forward. To elaborate, if you built a time machine (the physics of which are beyond my current knowledge) and switched it on today March 25th 2008, and then left it running in a closet for 100 years, then you could enter the time machine in the year 2108 and travel back in time to anywhere between 2108 and March 25 2008.

    A few people who are wont to get worked up over things claim that running the LHC will create the "A" point for time travelers from the future to return to.

    In more realistic physics, time travel already happens on the microscopic level within energized particle/wave systems thanks to the Lorentz Transformations 'local time' concept. In a standing wave system that is moving, the standing waves no longer pulsate everywhere at the same time; the change along the displacement axis creates a phase wave that is retarded forward according to the distance to the center. Consider tests with moving clocks that show varying time readings to clocks on the ground: they are composed of electrons whose frequency is lower because they are energized and moving. We already account for this time variance in GPS satellites.
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  8. #7 Time travel is entirely possible 
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    Greetings, I have come to discuss the matter of time travel with you as you seem interested in the subject. I have first hand knowledge that it is not only possible but it is frequently practiced.

    I will address you seperately

    cheezinator; What you are refering to is the science fiction versions of theories that are not proven. To answer your question time travel is entirely possible in both directions and used and practiced with 3 known methods.

    Jackson; I see you have much faith in Einstein, He would be the first to admit that humans are vain, and that there is no limit to human stupidity. After all Einstein was also the founder of the cosmological constant. Which was only slightly more incorrect than when he married his cousin.

    uncommon;You are assuming that there would be no way to protect a human body from the outside forces of traveling through time. The same was said about the speed of sound, spacewalks, and even scuba diving.

    Kojax; Your statement is incorrect, a counter rotating pair of singularaties cancel each other out and in turn allow for safe passage through the EH. and even a single "singularity" would not pull your feet faster than your head similar to the "spaghetti theory" a singularity acts as a force pulling in matter just as this planet keeps your butt in that chair. (and I should add that is directly related to it's size) a smaller contained singularity would have less gravitational pull than a super massive galaxy eating black hole. These things are similar only in theory. To call it a wormhole is kind of a moot point because when you travel the only thing that changes is the time and the timeline, not the location.

    frenchi; Actually the means were discovered in 1998 by a much smaller collider the new LHC will only solidify those findings.
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  9. #8 Re: Time travel is entirely possible 
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    Quote Originally Posted by timetraveler1991
    ....I have first hand knowledge that it is not only possible but it is frequently practiced.

    ....To answer your question time travel is entirely possible in both directions and used and practiced with 3 known methods. ....
    By who and what are the three methods?
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  10. #9  
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    Sorry for repeating myself in such threads, but... Time travel is impossible :P
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  11. #10  
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    Quote Originally Posted by Obviously
    Sorry for repeating myself in such threads, but... Time travel is impossible :P
    ssshhhhh! Don't ruin the suspense for me! I wanna see his pictures of him with george washington and dinosaurs.
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  12. #11  
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    Orleander; it is practiced for several reasons, most scientific in nature (research) with some military involvement, and for select few who can afford it, it's used for sentimental reasons. The three methods known are
    1. Manipulating dual singularities in a closed system that is externally powered to produce a distortion field in which travel is acheived. Called simply Bubbles.
    2. Astral projection; is a method of travel practiced for some time, early recordings date the first known astral projection to 1745BC. This practice is no longer done by well trained monks or extremely hyper sensitive people. A drug (non narcotic) is introduced to the neocortex via the spinal column and the projection cooridanates controlled by computer interface. ((this is a temporal travel only not physical matter only in mind))
    3. A wave surfer; simplified it is a machine that collects and measures gravitational waves and looks for anomolies (I beleive at this time that the LISA program from NASA should be nearing completion) which is fundamental in the discovery of this method. And in these anomolies are areas that can be exploited or for lack of a better word "surfed" to a specific point in time. ((I must ad that this method is least used as the user is not able to define the coordinates of time but is subject to the nature of the anomoly))

    Obviously; If a Man will begin with certainties, he will end in doubts; but if he will be content to begin with doubts he will end in certainties.’
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  13. #12  
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    Quote Originally Posted by timetraveler1991
    Orleander; it is practiced for several reasons, most scientific in nature (research) with some military involvement, and for select few who can afford it, it's used for sentimental reasons. The three methods known are
    1. Manipulating dual singularities in a closed system that is externally powered to produce a distortion field in which travel is acheived. Called simply Bubbles.
    2. Astral projection; is a method of travel practiced for some time, early recordings date the first known astral projection to 1745BC. This practice is no longer done by well trained monks or extremely hyper sensitive people. A drug (non narcotic) is introduced to the neocortex via the spinal column and the projection cooridanates controlled by computer interface. ((this is a temporal travel only not physical matter only in mind))
    3. A wave surfer; simplified it is a machine that collects and measures gravitational waves and looks for anomolies (I beleive at this time that the LISA program from NASA should be nearing completion) which is fundamental in the discovery of this method. And in these anomolies are areas that can be exploited or for lack of a better word "surfed" to a specific point in time. ((I must ad that this method is least used as the user is not able to define the coordinates of time but is subject to the nature of the anomoly))

    Obviously; If a Man will begin with certainties, he will end in doubts; but if he will be content to begin with doubts he will end in certainties.’
    I have no idea what you said in #1. Can you say it in layman terms (and if that was in layman terms, than I am in a world of hurt)
    #2 I don't care about.
    #3 is interesting but sounds as if its not perfected yet.

    So, how do you know about these first hand?
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  14. #13  
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    Quote Originally Posted by timetraveler1991
    Obviously; If a Man will begin with certainties, he will end in doubts; but if he will be content to begin with doubts he will end in certainties.’
    Time travel is a logical impossibility, it doesn't make any sense. Time isn't something that can be manipulated or anything, it's a concept used as a tool to measure change. To think you can travel through time is absurd. Would you age, die, get younger or anything when travelling through time? Will you ever be able to return to your time?

    What about the law of conservation of energy? Can you add matter from the future to the past? What happens?

    Just mentioning time travel opens up a million paradoxes, thus violating occam's razor.
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  15. #14 Re: time travel 
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    Quote Originally Posted by thacheezinator
    there are theories going on that say you could travel though time. You couldn't get the circumstances to do it in almost all the cases, but some people say it is plausible...
    Unfortunately, we haven't figured out how the -concept- of time travel works in reality. It appears to violate causality, among other things.

    Quote Originally Posted by thacheezinator
    1. People say that you could take something with about 10 times the mass of the sun, roll it into an infinetly long cylinder, and spin it at about 80,000 times per second. Then, you plot a course around it, and you can go through time.
    This is ridiculous, aside from the fact that we wouldn't even need to build such a device to show it worked or didn't. Black-holes have a mass many times that of a conventional star, and rotate (presumed in many cases rapidly).

    In fact, one of the current theories concerning black-hole dynamics states that if you could somehow shoot yourself through the ergosphere of a black-hole, you could potentially time-travel, but there's a lot of fine hairs to be split on what that "time travel" could entail.

    Quote Originally Posted by thacheezinator
    2. Some people say that if you are transported through a wormhole, you could travel through time.
    The concept of time travel through a conventional-space worm hole depends on many factors. The first and most important being whether or not there is any actual significance between the point at which you enter, and the point at which you leave. If the worm hole is purely an fold of conventional space, creating a point at which both parts intersect, going from point A to point B wouldn't necessarily cause any time travel relative to yourself or the universe. You'd simply be in another place. Imagine going through a doorway from one room to another. The only time concerned in that example is the amount of time you spent going through the door frame. If the folding of conventional space allows you to span a distance of 100-thousand light-years in 3 feet, you haven't traveled 100-thousand years, you've simply found a different path to a different point in space. The time that passed at your origin, from when you entered to when you exited the wormhole, would be only as long as you spent traveling in the wormhole.
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    Obviously; there were a lot of questions there so I will try to answer as best I can,
    ((would you age)) only at the rate you are currently aging in your timeline before you opted to travel.
    ((die)) possibly
    ((get younger)) no
    ((be able to return to my time)) I am not sure if this is a general question or a personal one so I will answer both ways, I am roughly in my time I was born in 1977 in Muskegon Michigan but am currently in a seperate timeline than my own I am 33 in my timeline. To answer generally yes you can return to your own timeline with reasonable accuracy. and to answer the question you are likely thinking about "no nothing done here will affect the timeline there" If that were true I would be a lottery winner and not amusing you by trying to convince you that time travel is practiced.
    ((matter from future to past)) yes, and to answer the other question it does not violate the conservation of energy laws, or thermodynamics.
    Matter is replaced as it leaves a timeline from matter in the timeline traveled to, nobody knows exactly where the matter comes from when someone travels back and forth, in theory it only needs to come from "somewhere in the universe."
    Example; you take an apple with you on a trip 2 years in the past, when you leave the matter is gone and replaced with matter from the timeline you travel to, an apple grows in a matter of hours instead of weeks on a tree to replace the one you took, and an apple disapears from a tree in the timeline you are going to. nobody can confirm this yet but it is a theory that this how matter is "conserved"

    Perhaps Occam should have sold disposable razor's?

    Orleander; another way to put the first method would be to emagine a nuclear detonation only in reverse "forced inward on a single point smaller than an atom" and then contained with an external power field to keep it from exploding outward, The singularity needs to consume matter in order to stay in exsistance, the matter is different dependant on the trip. Two of these operating opposite of each other produces the needed bubble in which to travel to another timeline.

    First hand knowledge because I worked on a component that helped regulate the timing for the containment field generator. I admit I don't have advanced physics knowledge or a detailed knowledge of all the parts but If it has to with real time travel, I know a little.
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  17. #16  
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    Quote Originally Posted by timetraveler1991
    ....First hand knowledge because I worked on a component that helped regulate the timing for the containment field generator.....
    that's it? Isn't that kinda like working at a gas station and saying you have first hand knowledge of the petroleum industry??
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  18. #17 Re: Time travel is entirely possible 
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    Quote Originally Posted by timetraveler1991
    uncommon;You are assuming that there would be no way to protect a human body from the outside forces of traveling through time. The same was said about the speed of sound, spacewalks, and even scuba diving.

    The speed of sound is not an absolute. Even if you are talking about absolute zero (in spacewalks), if you relate it to the speed of light, it is coming to a coplete stop. That is quite different that reaching the ultimate temperature (if that can even exist). Scuba diving is a matter of pressure and you are reaching anywhere near the greatest pressure conceivable.

    If wormholes are the result of something that even light cannot escape, you are at the highest scale of "gravity" or whatever you choose to call it. We would probably be scattered into 100 billion fragments.

    Beam me up Scotty!
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  19. #18  
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    Quote Originally Posted by timetraveler1991
    another way to put the first method would be to emagine a nuclear detonation only in reverse "forced inward on a single point smaller than an atom" and then contained with an external power field to keep it from exploding outward,
    Do you know how much energy you need to get a sum of matter to collapse in such a way?

    Quote Originally Posted by timetraveler1991
    The singularity needs to consume matter in order to stay in exsistance, the matter is different dependant on the trip.
    Assuming we're now talking about black holes, the intersecting direction of matter and its rotation may effect the nature in which it is consumed, sustained, or even rejected, but the perpetuation of the black hole is not stable based only on the presence of matter. As long as the black hole is growing significantly large, it's tendency towards entropy diminishes. In order to create a balance, if it is even possible, it would have to be controlled to an extremely fine degree which would make such an attempt both impractical, and virtually impossible outside of wishful thinking.

    Quote Originally Posted by timetraveler1991
    Two of these operating opposite of each other produces the needed bubble in which to travel to another timeline.
    No, you get a lovely gob of science-fiction nonsense...

    Quote Originally Posted by timetraveler1991
    First hand knowledge because I worked on a component that helped regulate the timing for the containment field generator.
    Do tell...

    Quote Originally Posted by timetraveler1991
    I admit I don't have advanced physics knowledge or a detailed knowledge of all the parts but If it has to with real time travel, I know a little.
    In order to understand the basics and function of such themes, you don't have to be an expert, but you do if you intend to work with it. Anyone can understand the function of an atomic fountain clock and even operate one. Building one is a whole different matter.




    In the end, we have to address what the effect of time travel would be in a universe where the order of matter seems essential. What happens to causality when matter can re-arrange itself through time? Unless we assume that matter is capable of spontaneously back-filling itself in its absence, the inclusion of time travel would inevitably cause "temporal currents" of matter, leaving some periods of time with potentially less matter than others, and ultimately likely causing some rather regretful events in the future (or past, or both).
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  20. #19  
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    Yes it is possible.
    "If you wish to make an apple pie from scratch, you must first invent the universe". - Carl Sagan
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  21. #20 Time Machine 
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    i heard from a friend, that someone is making a WORKING time machine, now, personally, i think its going to be a spectacular fail, and heres one reason why: it says you can only travel back in time to when you flip the switch, so, even when it comes to the string theory, if you flip the switch then you wait for 50 years, then you go back in time, then there HAS to be a 2 people in the machine when its activated (or whenever you go back in time to), because there has to be you from the future and you from the past because the one in the past cannot know what you know now, so, knowing this, there are infinite possibilities, because the time frame for when you can go back in time is infinite, and this is because seconds are infinite and whole numbers as well (as I'm sure you know) but anyway, even if there are infinite alternate universes every one of them would be filled with infinite you's because you can go back in time infinitely. I don't plan on reviewing this post, i just wanted everyone to see my point of view, feel free to debate this .
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  22. #21  
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    Wow! That went over even my head!

    Welcome . I'd debate your point if there was need on my point, but like most things, I create a teleporter when I reach the bridge.
    "If you wish to make an apple pie from scratch, you must first invent the universe". - Carl Sagan
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    Time is a mechinism made by man to measure motion from point A to point B. The faster you go, the more in the "past" you are as compared to the "stationary viewer".

    If you are in a car, going 50MPH, your body is traveling 50MPH, time is relative to that 50MPH rate, time relative to you is slower than that of the 0MPH car. If you are in a car going half the speed of light, your body would move half the speed of light, therefore time would be relative to half the speed of light and time would slow down that much compared to a car traveling at 0MPH.

    If a time machine somehow made you move superfast, about one forth the speed of light, you would be in the past, but only from the point that you turned the time machine on.

    But come on, air resistance alone would tear you up, and if you did it in a vaccume your body would practically explode, if you did it in a vaccume with air in the vehicle you would need a super-large amount of energy in which we obviously coulden't accomplish anytime soon.
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    time travel is interesting enough but very implausible. ok ok... you hate your grandfather because he cut you out of his will. so to commit the perfect crime, you decide to go back in time and kill him before he conceived your father. then you hightail it back to the future... opps! forget something?

    errrrrrrrrrrrrrrrrrrrrrrrr thanks for playing.
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  25. #24  
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    Quote Originally Posted by yaksmanofages
    i heard from a friend, that someone is making a WORKING time machine, now...
    I've got a great deal on the Brooklyn Bridge. Interested?


    Quote Originally Posted by Raymond K
    Time is a mechinism made by man to measure motion from point A to point B. The faster you go, the more in the "past" you are as compared to the "stationary viewer".
    We would hope anyone attempting to address the subject of time travel would be aware of relativity.


    Quote Originally Posted by ajg624
    ok ok...
    Getting excited or something?


    Quote Originally Posted by ajg624
    ...you hate your grandfather because he cut you out of his will. so to commit the perfect crime, you decide to go back in time and kill him before he conceived your father. then you hightail it back to the future...
    Time travel violates causality.
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    I've got a great deal on the Brooklyn Bridge. Interested?
    no thanks, the brooklyn bridge is dumb in my point of view.

    going back in time to kill your grandfather can only be done with a time machine that goes back in time FURTHER than when you flip the switch (unless its left on long enough to go back that far) and secondly with string theory if you killed your grandfather you would be in a paralell universe where your grandfather was dead to begin with, so, you would still be alive, but no one would know you because you were never SUPPOSED to exist, but you do... THANKS FOR PLAYING! :P

    lastly, my brother says that if you flip the switch, then go back in time, it would be as though you never flipped the switch because everything would go back in time including you. anyone think thats true?[/quote]
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    Quote Originally Posted by 425 Chaotic Requisition
    Wow! That went over even my head!

    Welcome . I'd debate your point if there was need on my point, but like most things, I create a teleporter when I reach the bridge.
    BTW thanks, and ill try not to double post in the future but i dont have time to edit my post.
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  28. #27  
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    Quote Originally Posted by yaksmanofages
    anyone think thats true?
    No. Once again, your example violates causality. Maybe you should look that up? We don't need another example of time-travel inconsistencies.

    Quote Originally Posted by yaksmanofages
    ...but i dont have time to edit my post.
    You didn't have the time to click a button and type for the edit, but you had the time to click a button and type for a new post. Yeah, okay.
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    Quote Originally Posted by Raymond K
    Time is a mechinism made by man to measure motion from point A to point B. The faster you go, the more in the "past" you are as compared to the "stationary viewer".
    We would hope anyone attempting to address the subject of time travel would be aware of relativity.


    I was saying that time travel is possible, and can be proven possible by relativity.
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    yak; Your friend probably is thinking of Dr. Ronald Mallett, Prof. of Physics, University of Connecticut. His ideas have been aired on documentaries and he has some interesting ideas, incorporating Einsteins relativity. Although not a working machine he feels it could be in ten years. Basically he thinks warping time (twisting) could allow a person to walk through time, basically in his machine.
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    Anyone catch the "Time" episode on Discovery Science Channel tonight? It presented a demonstration of the first experiment conducted successfully to observe time slowing as a result of motion.

    Using a controlled display device that displays a random number, they have the ability to distort this number using a strobe mechinism to the point it becomes undetectable by the naked eye.

    Then they give this device to a volunteer who agrees to climb up a 130ft high frame structure and drop straight down into a protective netting assembly below while looking at the display of this device.

    The object is to slow time to create longer strobe intervals allowing the subject to see the number on the display. The same display that was undetectable when given to him. First try he saw the number 56. The actual number was 50. On the next try he saw 98. The actual number was 96. The scientists claimed the experiment to be a success.
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    I have heard three explanations of the 'number generator' experiment, and all three had different explanations of the result. The first was set up as a multiple-participant experiment, with the result being that no significant portion of the participants were able to see anything but a blur as they fell past the counter. The second was on Discovery's new show about the body under extreme conditions, where they mentioned the same experiment, but spinned it to say (with the usual documentoral dramatic flare), "Some of the participants were able to make out the numbers as they fell," without mentioning if 'some' meant 1 out of 1000 participants or whether their observation was accurate.

    The third was mentioned in the post above, though I have not personally seen the show described. I'd like to see the actual data gathered from this(these?) experiments before I cite or believe the interpretations. The more I hear it, the more it reeks of sensationalist pseudoscience.
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    Someone do the math (I'm not bored enough myself) and figure out how fast the person was moving when they fell off the 130ft structure to the ground (we'll assume the net was at 0ft to make it simple).

    Estimating, let's assume that the fall took 2 seconds (anyone who saw the show, feel free to correct that). Given my estimate, we could say they were traveling about about 50mph when they hit the net. Don't quote me on that.


    Anyway, why not put the clock on something that moves little faster than what could be replicated with a car. Say, a jet? Let's put the sucker on a jet, send it to 600mph+, and start some observations.
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    Anyway, why not put the clock on something that moves little faster than what could be replicated with a car. Say, a jet? Let's put the sucker on a jet, send it to 600mph+, and start some observations.
    Bodies in Motion: I read "time" passes more slowly for the relative observer. For example, the astronaut riding along in his space ship will experience time dilation but without something to compare it to, will not recognize it. It would appear capturing test results by use of a clock may be impossible. If time dilation occurs, all time related observations slow down proportionately and this would support experimentation using something other than a clock.
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    Well the problem with measuring time is that everything is relative: as far as we know, there is no universal reference point (except maybe the point of origin of the big bang; everything else is moving). Unless we figure out a way of measuring time that doesn't rely on resonance frequencies or vibrations we'll see this issue; energized bodies operate at lower frequencies.
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    Quote Originally Posted by Wolf
    Quote Originally Posted by yaksmanofages
    anyone think thats true?
    Quote Originally Posted by wolf
    No. Once again, your example violates causality. Maybe you should look that up? We don't need another example of time-travel inconsistencies.
    first of all that doesn't violate anything if you believe in string theory, as far as i know and am concerned

    Quote Originally Posted by yaksmanofages
    ...but i dont have time to edit my post.
    You didn't have the time to click a button and type for the edit, but you had the time to click a button and type for a new post. Yeah, okay.
    so you have time to be a jackass but not enough time to actually be helpful, yea, ok.
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  37. #36  
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    Quote Originally Posted by yaksmanofages
    I've got a great deal on the Brooklyn Bridge. Interested?
    no thanks, the brooklyn bridge is dumb in my point of view.

    going back in time to kill your grandfather can only be done with a time machine that goes back in time FURTHER than when you flip the switch (unless its left on long enough to go back that far) and secondly with string theory if you killed your grandfather you would be in a paralell universe where your grandfather was dead to begin with, so, you would still be alive, but no one would know you because you were never SUPPOSED to exist, but you do... THANKS FOR PLAYING! :P

    lastly, my brother says that if you flip the switch, then go back in time, it would be as though you never flipped the switch because everything would go back in time including you. anyone think thats true?
    [/quote]

    I think that, if you did anything contradictory when you went back into the past, it would disrupt whatever pathway you'd used to get there. Attempting it might cause a serious explosion or something, or otherwise you might find that the matter in your body is absolutely incapable of being directed into a path of action that contradicts the history you know.

    I'm sure there are rules on your behavior that get applied by the physics.
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    If we assume that something can avoid affecting the present by moving to another parallel universe where the time-travel "acts" are committed in an alternate reality, then I would argue that it's not really time travel but instead a form of linear travel to a parallel universe (or something of the sort).

    Two problems leap to mind (right now):

    1. If we assume that we can preserve causality by parallel-universe shift, how can we be certain that the "past" which we travel to is in any way obedient to the time-line we traveled from?

    2. If we consider that matter is actively moving from one parallel universe to another, and that matter doesn't spontaneously generate to fill the gaps, then we are effectively subtracting matter from some universes and adding it to others. While sending matter to another universe, some other universe is potentially sending matter to ours. Further, that "transmitted" matter is not directly replacing that which was taken from the universe it is entering. So, if this is a regular occurrence of the physical world, when do we start noticing the gradual (or rapid) destruction of our universe?
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    if time travel was possible wouldn't future travelers have visited us already?
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    My take on time travel is that the physics of actually going back in time places a constraint on the matter that makes up your body so that it absolutely cannot possibly be directed into a course of action that contradicts your history.


    If that's true, then probably future time travelers visit us all the time, and always have, but in order to preserve the causal chain of events that lead up to them, they're only able to interact with us in very limited ways.

    So there's your ghosts, and a lot of other paranormal stuff in a nutshell.
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    timetravel

    I don't know if this helps, If time travel is possible how would you fix yourself to a place in space as everything is moving?
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    Quote Originally Posted by speedingslug
    timetravel

    I don't know if this helps, If time travel is possible how would you fix yourself to a place in space as everything is moving?
    This is why it would be necessary to accept only the most self centred of individuals as prospective time travellers. Since such people think the Universe revolves around them, the problem you raise would be automatically eliminated. :wink:
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    Well, if they interacted with us at all, even in a limited way, I would see that as no different from full interaction (even if just from the particle viewpoint).

    Quote Originally Posted by kojax
    So there's your ghosts, and a lot of other paranormal stuff in a nutshell.
    Is it probable that the advanced future-folk are coming back and haunting murder sites and roaming castles? :P

    Although if that is possible and I live long enough to do it, I'm dressing up as Hitler and dancing around Steve Jobs' office...
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    More likely they're coming back, translating the stuff in people's brains to information (at the split second before death), and then to artificial intelligence, and then letting those people express themselves.

    Or, well, maybe it's not that likely, but it's becoming my religion to believe in this. At some point in the future humanity comes together (kind of like Bill and Ted's excellent adventure), and then decides it would be cool to bring back all their ancestors from the dead.

    A time traveler is free to observe all they want. It's just not wise for them to touch anything, unless they're very very careful.
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    I'm not sure how you can separate the "touch" from the "experience."
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    Well, Einstein said that going past the speed of light will send you back. And studies show that time "slows down" when moving at high speeds.

    Hypothetically, say you went off on a 20 year space mission.

    When you return, you will be "younger" than others your age.
    A biophysicist talks physics to the biologists and biology to the physicists, but then he meets another biophysicist, they just discuss women.
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    Quote Originally Posted by Wolf
    I'm not sure how you can separate the "touch" from the "experience."
    Good point. Even if they had super advanced sensors and they were watching from space, they'd still be playing some role in the events of our world. Maybe a very small one, but still..
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    Quote Originally Posted by kojax
    Good point. Even if they had super advanced sensors and they were watching from space, they'd still be playing some role in the events of our world. Maybe a very small one, but still..
    Not even that. Just being in that space, able to observer, would indicate some form of exchange of matter/energy. For that to happen, you'd be interacting with that other universe or time frame, and if even that little interaction is possible, it opens the doors for huge problems.
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    theoretical or real.....the problems?

    (don't say both)
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    Quote Originally Posted by theQuestIsNotOver
    theoretical or real.....the problems?

    (don't say both)
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    1. this is a plausible idea but impossible to construct because it would take an infinte amout of matter which is an infinate amount of energy which is imposible.

    2. if you were some how able to create a wormhole to another dimention or time you would die going through.it is called the spagette effect. the gravity pulling on your feet is stronger than that of your head so your body is pulled apart and startts to resemble som thing like a strand of spagette.

    there are other ways to travel through time though. if you want to seem some ways of future time travel you sould get the book "how to build a time machine".
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    Quote Originally Posted by unoscooter
    1. this is a plausible idea but impossible to construct because it would take an infinte amout of matter which is an infinate amount of energy which is imposible.
    Where'd you get that from?

    Quote Originally Posted by unoscooter
    2. if you were some how able to create a wormhole to another dimention or time you would die going through.it is called the spagette effect. the gravity pulling on your feet is stronger than that of your head so your body is pulled apart and startts to resemble som thing like a strand of spagette.
    That all depends on the circumstances of the wormhole. Further, a wormhole in the "fabric" of space-time may be a physical phenomena; a "wormhole to another dimension" is science-fiction jargon. In either case, the use of a worm-hole does not necessarily involve time-travel.
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    Wormhole talk always kind of bugs me because it's unclear to me how the wormhole wouldn't tear your body into pieces as you pass through it.
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    Quote Originally Posted by kojax
    Wormhole talk always kind of bugs me because it's unclear to me how the wormhole wouldn't tear your body into pieces as you pass through it.
    Imagine a narrow hole in a pane of glass. On one side, a glob of putty. On the other side, a vacuum.

    If the conditions on one side are greater than the other, then when traveling through the wormhole you could potentially be ripped through in a manner not condusive to your body's integrity.

    However, the wormhole itself is only an effect of other forces, so if the forces on both sides of the wormhole are equal, the transition would be a bit less dramatic (in fact, you might get stuck in the middle).

    Another interesting situation is when an effect on one side (say a large mass) causes the wormhole alone. You would have to overcome the force of that object when passing through. On one side, with the mass, you'd be trying to get away from a "fabric" bending power, while on the other side you'd be pulled in through the wormhole like a bit of dust passing the nozzle of a running vacuum. It's a black hole! lol
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    After reading a book on scalar systems of quantum causality, I definitely believe time travel is possible.

    See "Building Universes" sbwire
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    Quote Originally Posted by Wolf View Post
    Quote Originally Posted by kojax
    Wormhole talk always kind of bugs me because it's unclear to me how the wormhole wouldn't tear your body into pieces as you pass through it.
    Imagine a narrow hole in a pane of glass. On one side, a glob of putty. On the other side, a vacuum.

    If the conditions on one side are greater than the other, then when traveling through the wormhole you could potentially be ripped through in a manner not condusive to your body's integrity.

    However, the wormhole itself is only an effect of other forces, so if the forces on both sides of the wormhole are equal, the transition would be a bit less dramatic (in fact, you might get stuck in the middle).

    Another interesting situation is when an effect on one side (say a large mass) causes the wormhole alone. You would have to overcome the force of that object when passing through. On one side, with the mass, you'd be trying to get away from a "fabric" bending power, while on the other side you'd be pulled in through the wormhole like a bit of dust passing the nozzle of a running vacuum. It's a black hole! lol

    Couldn't agree more
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    Four years....seems like yesterday
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    michio kaku definitely would believe it's possible to harvest that much energy needed to bend space n time. he seems to mention these ideas a lot : Type I, II, III and IV civilizations, where type I is able to control the output of an entire planet (internet is the beginning of a Type I communication system), Type II has already reached the point where they can convert stars into energy sources, III and IV gets much much crazier... i dont know where is he basing these concepts from
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