Grrrrrrrrrrrrrrrrrrrrrrrrrrrr...<br /><br />You are gonna make me repost my tyraid "How I KNOW that humans will never develop time travel". <br /><br />If you sit and think about it for about 3 minutes, you will get the answer on your own.<br /><br /> <div class="Discussion_UserSignature"> <font size="1"><em>Note to Dr. Henry: The testosterone shots are working!</em></font> </div>
i dont know what the fus about time travel. if we travel to the past, we wont be interact with the people. in my opinion, we can just watch. if we go into the future, we'll see just blank, nothing happened yet. <div class="Discussion_UserSignature"> <font size="2" color="#ff0000"><strong>Earth is Boring</strong></font> </div>
This is a little document I wrote really quick after reading an article about how hubble is practically looking into the past to the beginning of time, here are those thoughts on time travel, or really time viewing:<br /><br />With the hubble telescope, we can see bodies in space that actually might not be there anymore, They are thousands (or millions?) of lightyears away. For all we know they are not there any more. It is well known we are simply looking into the past, way into the past. We have no idea what those bodies in space look like now or if they are even there anymore. <br /><br />What is lifeforms from those bodies we see thousands or millions of years in the past and they are looking at us with a telescope similar to hubble. Does that mean that they see us lightyears in the past also? Possibly with a strong enough telescope aimed well enough they could watch Dinosaurs roam and such. When actually it happened a very long time ago.<br /><br />Does that mean it is possible to make a device that can look back at us? Maybe put a huge mirror out there thousands of light years away and we point the hubble at it. Would we not see ourselves thousands of years back through the hubble?<br /><br />Also say we are going the speed of light, is that not also the speed of time? At least to our eyes that is the case for if we looked behind us as we were going speed of light the stuff behind us would be perfectly still as if time had stopped because no new light would reach us to see the change.<br /><br />What if we went even faster than the speed of light, if we looked behind us would we not see time apparently look to go backwards and everything would be happening in rewind. Like we are catching up with the light that happened earlier and we are seeing it again?<br /><br />Does this make sense?
“Does that mean it is possible to make a device that can look back at us?”<br /><br />In order to do so, we would have to be able to travel faster than light, which is currently beyond our abilities. But if we someday discovered warp technology, then, yes, it might be possible-but only with an immensely powerful and advanced telescope, and even then not beyond a certain distance (because only a few photons would reach it making pictures impossible). With our current telescopes we can’t see other earth like planets- we can only detect their presence by measuring the wobbles of their star as the planet orbiting tugs at it. <br /><br /> <br />
makes sense to me <img src="/images/icons/smile.gif" /><br /><br />First of all, the speed of time is one second per second.<br />In my opinion, this proposition can only be hypothetical due to the distance that would be required in order to recieve an 'image', information or whatever from the significant past. There would also be a reduction of intensity (although I'm not sure if this is the case for light) that is proportional to the square of the distance travelled. So we would need absolute beasts of detectors, and couldn't just use our eyes.<br />Also, it would not be the time of dinosaurs, but the difference in time that light takes to travel from us to the 'mirror' and back. So nothing before when we launch the mirror could be observed.<br />We do however observe this effect in everyday life. A good example of this is when live video interviews are being conducted from the other side of Earth. The delay between when the question has been stated and when the other person hears the end of it a begins to answer is teh time the information has taken to travel via satellite around the world. The person hears the question live yet delayed. So they are hearing into the past. In our case, the mirror would be like the satellite and the video information, light. You also often get these satellite linkages on the news.<br />Cool idea <img src="/images/icons/smile.gif" />
<br />It sounds like science fiction, but it is taken so seriously by relativists that some of them have proposed that there must be a law of nature to prevent time travel and thereby prevent paradoxes arising, even though nobody has any idea how such a law would operate. The classic paradox, of course, occurs when a person travels back in time and does something to prevent their own birth -- killing their granny as a baby, in the more gruesome example, or simply making sure their parents never get together, as in Back to the Future. It goes against commonsense, say the sceptics, so there must be a law against it. This is more or less the same argument that was used to prove that space travel is impossible.<br /><br /><br />So what do Einstein's equations tell us, if pushed to the limit? As you might expect, the possibility of time travel involves those most extreme objects, black holes. And since Einstein's theory is a theory of space and time, it should be no surprise that black holes offer, in principle, a way to travel through space, as well as through time. A simple black hole won't do, though. If such a black hole formed out of a lump of non-rotating material, it would simply sit in space, swallowing up anything that came near it. At the heart of such a black hole there is a point known as a singularity, where space and time cease to exist, and matter is crushed to infinite density. Thirty years ago, Roger Penrose (now of Oxford University) proved that anything which falls into such a black hole must be drawn into the singularity by its gravitational pull, and also crushed out of existence.[It] consists of two chambers, each containing two parallel metal plates. The intense electric fields created between each pair of plates (larger than anything possible with today's technology) rips the fabric of space-time, creating a hole in space that links the two chambers. Taking advantage of Einstein's special theory of relativity, which says that time runs slow for a movi
If you think of time dialation as time travel, then you can spend some time on Mercury and you will age faster than on Earth, while you go to Jupiter system you age slower than on Earth. This system has no paradoxes associated with it, and yet its a form of time travel. <div class="Discussion_UserSignature"> <p> </p><p><font color="#0000ff"><em>"SCE to AUX" - John Aaron, curiosity pays off</em></font></p> </div>
I do not believe we would ever have the technology to travel to the past or future since they do not exist in a real sense, only in a virtual sense. Let me try to make this clearer. We know some of history because we have some memory of it in our own lives, and we can visualize some things that happened further in the past. The best we can do is reconstruct some particular past event, or bring together from our memory and experience what is in store for future. <br /><br />We could never actually travel to those places where some event occurred or might occur. To do so involves the way time flows. Time is not local. Events happen at some point of time in regards to the entire universe. To travel back in time requires us to change all events of time going backwards in the entire universe. One result of this is that we have gone to the past ourselves where we could not exist if we were not born yet. And going to the future beyond our age is likewise a little unrewarding because we would have died before we got there, and this is the nature of the paradox, because it involves us, not our grannies, or kids.<br /><br />Here is another perspective on the multiple universe notions. Hold a stone in your hand and contemplate how many universes are in there. There would have to be many trillions for that stones lifetime if every quantum particle created one every time some choice came along. Yet the stone just is and always has been. While we watch, it does not disappear to travel into the future or past or turn into something else. And to bring in relativity for any justification of time travel is bending the meaning of relativity. Relativity means to me a set of equations that can represent a certain small portion of reality, but not close to define much of it yet.<br /><br />I get a sense of a certain entertainment level always in this type of discussion, but for me science is a constant quest in the direction of truth, an entanglement of fact and theory divested of
I have a problem with this multiverse time travel. If there would be such a thing as the multiverse and I would manage to travel back in time, my trip would [have to] add an extra branch to the multiverse. Where would the energy needed to create this extra branch come from? That aside, when I would interact with people who are dead at the point in time where I came from, they would react to questions and/or actions by me, and would hence be alive again, even if only in one of the trillions [plus one] of the branches of the multiverse. In other words, if your suggested paradox-solving time travel would be possible, we all have a chance to never really be dead.
<font color="yellow">I do not believe we would ever have the technology to travel to the past or future since they do not exist in a real sense, only in a virtual sense.</font><br /><br />You've sumed up my reason for thinking time travel is not possible either.<br /><br />To travel back into time, how would you resolve:<br /><br />Point of reference? AFAIK, the universe doesn't store event information. All past events exist only in our minds. We can't physically travel to the past because those events are temporal. Unless the universe recorded those events and stored them somewhere that we could set our time machine to access that information, we wouldn't have access to that information any longer, except in our memories. Time is ment to move forward for a reason........evolution.
<font color="yellow">Here is another perspective on the multiple universe notions. Hold a stone in your hand and contemplate how many universes are in there. There would have to be many trillions for that stones lifetime if every quantum particle created one every time some choice came along. Yet the stone just is and always has been. While we watch, it does not disappear to travel into the future or past or turn into something else. And to bring in relativity for any justification of time travel is bending the meaning of relativity. Relativity means to me a set of equations that can represent a certain small portion of reality, but not close to define much of it yet.</font><br /><br />I'm not sure what you mean here could you explain further.
I think of all the paradoxes associated with time travel, the least mentioned is the violation of the 1st law of thermodymics. If I simply appear at a time 200 years in the past, my appearance has added matter/energy to that system. I've never heard of a workaround for this. <div class="Discussion_UserSignature"> <div> </div><br /><div><span style="color:#0000ff" class="Apple-style-span">"If something's hard to do, then it's not worth doing." - Homer Simpson</span></div> </div>
I was thinking about multiple universes and tried to visualize some object for it in the stone. Maybe it was not a very good example but I have not yet come up with a better one. But where are the multiple universes if they exist. There just are not any in matter as we know it except in math notions. But I feel there is the possibility for multiple universes to exist of overlapping energies where the upper levels are not detectable yet very much by us.<br /><br />This brings in relativity which I mention because all levels of physics, it seems to me, when looking at quantum effects concerns itself far too much to try to apply this to the entire universe where it may be completely inappropriate, but is doing it because it follows tradition.<br /><br />Wormholes are another example of math notions of space/time distortion that just are not observed in nature. I think they would be observable if they actually existed.<br />
I discussed similar effects of time travel in multiple threads along these same probabilities, though the element of choice discussed here lends itself to some form of sentience being present. That part i don't so readily agree to, along with the actual probability of time travel itself and some universal law that prohibits it. <br /><br /> As i discussed in other threads, it is impossible because the act itself creates a different future relative to whatever object that travels. Taking into account the probability of parallel universes, and the element of conscious choice, it may be we're all time traveling every second of our lives, and just don't realize it. Creating a paradox of choice being the definitive aspect of the concept of time travel.<br /><br /><br />.<br />.<br />.<br />Ew. Did all of that just spew from me? I must go get some rest. My logic chip is overheated and malfunctioning.<img src="/images/icons/frown.gif" /><br /> <div class="Discussion_UserSignature"> <em>"<font color="#333399">An organism at war with itself is a doomed organism." - Carl Sagan</font></em> </div>
<i>[It] consists of two chambers, each containing two parallel metal plates. The intense electric fields created between each pair of plates (larger than anything possible with today's technology) rips the fabric of space-time, creating a hole in space that links the two chambers.</i><br /><br />I find it doubtful an "intense electrical field" can do this. In fact, I am damned near positive it can't.<br /><br />Sorry to be so negative... <div class="Discussion_UserSignature"> <p><em>Differential Diagnosis: </em>"<strong><em>I am both amused and annoyed that you think I should be less stubborn than you are</em></strong>."<br /> </p> </div>
Today, we know that time travel need not be confined to myths, science fiction, Hollywood movies, or even speculation by theoretical physicists. Time travel is possible. For example, an object traveling at high speeds ages more slowly than a stationary object. This means that if you were to travel into outer space and return, moving close to light speed, you could travel thousands of years into the Earth's future.<br />===============================<br /><br />Well Newton's or Einstein's is wrong going into the future or back in time with a timachine there no timachine today and we don't know how to build one.Also if time travel is possible or remote viewing and psychic predictions than the laws on nature is wrong .<br /><br />If there is predictions ,remote viewing or time travel than the world is prerecorded or some bizarre quantum mechanics.<br /><br />I just not see how free will allow this.Now may be one day we will find out for real if it is possible or not but with the laws on nature has we understand it well it is just too crude to answer this.<br /><br /><br />http://www.pbs.org/wgbh/nova/time/through.html <div class="Discussion_UserSignature"> </div>
My view is that "time travel" as we like to imagine it, is NOT possible. Why?. well, we exist in this very instant of what we like to call time. <br />We CANNOT undo whatever has happened in the last microsecond. We CANNOT move forward even one microsecond from our present instant.<br /> Astronomers say we are looking back in time when they gaze at light from very distant stars etc. but that is not really any sort of time travel. They are seeing only what is reaching their observation at this instant even if we can say that it happened eons ago from our understanding of light speed.<br />The "twin paradox' effect of travelling at light speed is not really time travel but just time operating at subjective or relatively different rates.<br />No-one can ever be able to go back to a time that has passed since all events that have occurred have passed on and are no longer in that time. The same applies for the future. We cannot travel into the future and "see" what is going to happen since there is nothing there yet.<br />To enable travel in time would require a permanent "record" of everything that has happened or will occur to be already "imprinted" on "space-time" for us to then peruse from our "time machine". Sort of like viewing a video tape.<br />I guess to expand that analogy, we could visulise the instant of time in which we exist as an infitesimal slice of video tape which is recorded on and immediately erased as times moves on.<br />Going back would show nothing and going would be blank.<br /><br />So, no , I am certain there will never be such a thing as time travel backward or forward.<br />
"My view is that "time travel" as we like to imagine it, is NOT possible. Why?. well, we exist in this very instant of what we like to call time.<br />We CANNOT undo whatever has happened in the last microsecond. We CANNOT move forward even one microsecond from our present instant."<br />----<br />that's right, what we call time is really just the observation that things around us change (and we along with them), when things change they are in the state what they changed into and no longer exist as they were before the change, there is no 'place' where every instant of existence would continue to exist despite all that delirius blabering about some dimensions, I can't help feeling sorry for those dreaming mystics with foggy notions of all that (no wonder science is in the hole it is in these days)<br /><br />even if time travel were somehow possible, I don't see how one could travel say hundred years back when one didn't exist then... and if one traveled to his youth time, why you would live as you did then and you wouldn't know you were once old and returned LOL<br /><br />all those dreamers wishfully think they would be bodily the exception to everything - they would be like they are now but everyting around would be like it was before or that they would see themselves as young or not yet born and somehow hower around those times like some angels LOL<br /><br />time is nothing but our observation that everything changes, there is no such thing like time appart from things changing, like it was said we live in this very instant and although we can accelerate or slow down aging of a chunk of cheese for example that is no time travel LOL<br /><br />vanDivX <div class="Discussion_UserSignature"> </div>