Time Travel

Is it possible we ask most people say NO i say YES. What it boils down to is physics, technology and alot of complicated science. I have read stories thoughout history about weird travelers dressed from another time. Some from the future some from the past but if you research it enough you will see that it has occured. My theory of time travel quite vast i believe that there are worm holes here on earth and by entering them its possible to end up in the past or even the future by skipping ahead. I also think its possible to invent a machine to do this. If science labs can now do teleportation of insects then why not time travel. It boils down to basically this time moves different speeds different places on earth we have a 24 hour day on Mars is a 12 hour day a year here for example is 2 years on Mars. What if you could move faster then that time faster then the speed of light or slow it down so slow that you were able to sit back and view our complete history like a story book. I believe that by existing on other planes you are able to see the past or future. Kinda like a psychic sees events unfold or Notradomus they are able to look ahead maybe not by time travel but its the same concept. The problem is even if man could travel back into time is it not possible to create a paradox. Imagine being able to change one thing which sets a chain reaction off. Lets say someone goes back to see there mother when she was alive then lets say at the moment you are meeting your mother it stops your father from maybe meeting her at that given time then you go back into your time and you disapear. Why? because you were never born. For every action there is a reaction. Every time you intervene etc can create a paradox. I believe its possible that some governments are trying to learn how to time travel. Why? Simple to have world domination going back in time perhaps to change one mistake for personal gain. As a boy and even now I dream of time travel thinking what if i went back and did things differently my life, my school years, the things i said wrong, the jobs i was fired at, the time i lost my wallet, the women that broke my heart. We all think like that at times but time travel again is more complicated then just going back. A good movie to rent is the time machine it shows how one mans simple mistake creates a different path, a new race, one that will create a world of destruction. Some aliens we believe are time travelers from other worlds where they already see how the earth will end and they come here to warn us to show us this knowledge yet man ignores it. I do think time travel is possible and i also think that some countries are pretty close to perfecting it. Off topic yes but would it not be great to travel back in time to see the pyramids being built, or Brontosaurus chewing on leaves. One era i always dreamed of going back to would be the Medieval times to be a lord of a castle, eat turkey legs, and have 7 wenches to keep me warm on a winters night:) Right now a dream someday a reality only time will tell.

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Rick-AngelOfThyNight 

Proton Theory

x' = (x - v t) / (1-B^2)^1/2
t' = (t - (v x)/c^2) / (1-B^2)^1/2

The above Dr. Ricardo Carezani's Autodynamics Time Dilation Formula can be utilized together with new teleportation discoveries and my time manipulation theory. Time Dilation is a "time average" taken by the phenomenon to emit the energetic particle or photon (lifetime). This becomes important when breaking down to Photons for teleportation in order to bring about other opportunities in science through these mathematical equations. Photons travel at the speed of light because their mass is identically zero. Now a question can be raised, can these photons be misplaced or lost in time, thus the time dilation theory, which also can be helpful to understanding and qualifying better equations. *New* Scientists Claim:Yoked Photons can Break the Light Barrier reported Mon Oct 9, 2000 by Science Magazine/science online. Former reports claim this same success and notice  if light could travel forward in time it could carry information-validating my thesis on prophecy/messaging that the President did agree was possible in his millenium science symposium he held with professor Stephen Hawkings a week after I anounced these things to many science and Gov't and international organizations.

Time Travel

Space the final frontier… so Star Trek began. Kirk & Spock whizzing through the outer reaches of the galaxy encountering all manners of unknown mysteries and beings. Boldly going where no man has gone before. Ahhhh, so romantic.
The original series of Star Trek must have been awesome to the sixties generation. It was exciting for the seventies, my own, generation. By the eighties and nineties special effects had come on in leaps and bounds and the demand was for more intrinsic stories, including a few trips back to 20th century Earth.
But, is time travel possible and what would happen if we could go back? If you believe in time travel into the future you are definitely living in cloud cuckoo land. If you believe in time travel into the past perhaps you are just in cuckoo land.
Various wild theories have been proposed for time travel. None tested yet! If you follow Einsteinian methods then faster than light travel (FLT) is impossible. Yet scientists have theorised, and I believed detected, of particles that do travel FLT. So eventually some bright spark will invent a time machine and take the inevitable plunge into the past and I dare say oblivion.
Our intrepid scientist fully conversed with all the dos and don'ts of time travel, and not meeting yourself save a big matter explosion in the fabric of time, arrives back at the day he was born. To simplify matters, as these things always get complicated, our scientist is travelling along time-line A.
That is to say he was born, grew up, went to college, invented time travel and went back to the day he was born. If at the moment he arrived at his birth he decided to return to the time he left, nothing would have changed, because that is his time-line. It is the only one he can ever know. Time-line A.
What would happen if he were to kill himself as a baby. Would he suddenly cease to exist? Yes and no, really. You see, you cannot changes what has already been. If he was to kill himself as a baby he would die, but die in time-line B. In time line B, which our scientist would never know nor be aware of, he would not grow up, nor go to college and not invent time travel. In fact unless someone else invented time travel, time-line B would never be aware of its existence.
In time-line A, our scientist would return after killing himself to a world that to all intents and purposes has not changed one bit. After perusing this problem for a few days he decides to go back in time and assassinate Adolf Hitler as a child. So he pops back to 1920, kills a boy and returns.
On his return he checks his history books and is aghast to find that the allies won World War 2 and Adolf Hitler committed suicide in his bunker. However, in time-line B, Adolf Hitler never succeeded as leader of the Third Reich. There was no WW2. The atomic bomb was never dropped. For In time-line A, no one could predict or foretell the outcome of time-line B. Perhaps every one lived happily ever after. Perhaps time-line B was destroyed because of interference from another time-line. I hope no one interferes with this time-line!
If we look at it logically, time-line A has made it to 1998. Who knows where time-line B is. Perhaps time-line B is created at the moment it is interfered with. If there is no time-line B and our scientist killed himself as a baby that would mean time-line A would change. So the scientist killed himself as a baby. He did not go to college, did not invent time travel. Nor did he travel back to kill himself. There is the paradox. Therefore, the baby survived and grew up to invent time travel and travelled back to kill himself as a baby. A circle ad infinitum. For the scientist time stops at the moment he kill the baby.
But the scientist travelled back to check the history books about WW2. So there is no circle and time-line B must exist. For if time-line B did not exist then time-line A is true and not only will time stop for the scientist but for the universe. Because time has been breached. This would lead to the fabric of the universe ripping apart. It would cease to be, as we know it. Perhaps it would have to start all over again with another big bang. Now there's a paradox!

• Let's say, for the sake of argument, that you could travel back to a time before you were born. The mere fact that you could exist in a time before you were born creates a paradox. If you were born in 1960, how could you exist in 1955?

   

• Possibly the most famous paradox is the grandfather paradox. What would happen if a time traveler went back and killed one of his or her ancestors before the traveler was born? If the person killed his or her grandfather, then how could that person be alive to go back and kill his or her grandfather? If we could change the past, it would create an infinite number of paradoxes.

The idea here is that every action causes the creation of a new universe, and that there are an infinite number of universes that exist. When you killed your ancestor, you created a new universe, a universe that was identical to your own up until the time you changed the original succession of events.

Confused yet? Welcome to the world of time travel. Just imagine how complicated the ticket prices will be.

Imagine if you will, that you are one of the people sill alive today that was born prior to 1903, when the first airplane took flight. When you were young the idea of flying would probably have been quite exciting. Some scientists believe that we may presently be living through an identical scenario. The thing that would be so exciting however, would not be flight, but time travel. Leading scientists believe that our children will live to once again see the impossible become routine. Professor Michio Kaku of the University of New York believes that space flight may one day unlock the secret of time itself. This will require the development of spacecraft that can travel at speeds on the order of two hundred million meters per second, that’s about four hundred and fifty million miles per hour. Craft traveling at this speed will take us near the speed of light, where time actually slows down. This is what’s known as time dilation. Einstein’s theories predict that the faster a spacecraft moves, the slower time ticks inside of it. Imagine that a rocket ship takes off from earth and approaches the speed of light. If we were to watch it from earth with a very powerful telescope as it traveled away from us, we would see everyone inside the ship as being frozen in time. To us their time would slow down, but to them nothing would change! This has been measured in the laboratory and on location using atomic clocks, aircraft, satellites and rockets. It is proven that time slows down the faster you move. In 1975 Professor Carol Allie of the University of Maryland tested Einstein’s theory using two synchronized atomic clocks. One clock was loaded on a plane and flown for several hours, while the other clock remained on the ground at the air base. Upon return, the clock on board the plane was found to be ever so slightly slower that the one on the ground. This was not due to experimental error, and has been repeated numerous times with the same result. This difference in time is even more pronounced in satellites such as the space station. This is because these objects are traveling at speeds much faster and for much longer periods than possible in an airplane. The faster an object moves, the more time is distorted.

Now that we know that it is possible to travel into the future by moving at great speeds, the next problem is how to travel in time a respectable amount without having to sit in a fast moving spaceship for years. This problem is solved by the theoretical existence of what are know as closed timelike curves, and wormholes.

Einstein’s special and general theories of relativity combine three-dimensional space with time to form four dimensional space-time.2 Space-time consists of points or events that represent a particular place at a particular time. Your entire life thus forms a sort of twisting, turning worm in space time! The tip of the worm’s tail would be your birth and its head is the event of your death. The line which this worm creates with its body is called that object’s worldline. Einstein predicts that worldlines can be distorted by massive bodies such as black holes. This is essentially the origin of gravity, remember. Now if an object’s worldline were to be distorted so much as to form a loop that connected with a point on itself that represented an earlier place and time, it would create a corridor to the past! Picture a loop to loop track that smashes into itself as it comes back around. This closed loop is called a closed timelike curve.  Timelike means that the body under consideration experiences time that increases in one direction along its worldline.2 Princeton University physicist John A. Wheeler, and Kip S. Thorne of Cal. Tech. have shown that a closed timelike curve is one way to create a kind of shortcut through space-time called a wormhole.2

Wormholes are holes in the fabric of four dimensional space-time, that are connected, but which originate at different points in space and at different times. They provide a quick path between two different locations in space and time. This is the four dimensional equivalent of pinching two pieces of a folded sheet of paper together to make contact across the gap. Distortions in space cause the points separated by the gap to bulge out and connect. This forms a wormhole through which something could instantaneously travel to a far away place and time.4 No more problems of traveling in a rocket ship for years to get into the future! This is essentially what was written about in "Alice in Wonderland’s Through the Looking Glass." Her looking glass was a wormhole that connected her home in Oxford, with wonderland. All she had to do was climb into her looking glass and she would emerge on the other side of forever. In reality however, it would require a much more elaborate scheme to create a wormhole that connects two different points in space-time. First it would require the construction of two identical machines consisting of two huge parallel metal plates that are electrically charged with unbelievable amounts of energy. When the machines are placed in proximity of each other, the enormous amounts of energy -about that of an exploding star- would rip a hole in space-time and connect the two machines via a wormhole. This is possible, and the beginnings of it have been illustrated in the lab by what is known as the Casimir Effect. The next task would be to place one of these machines on a craft that could travel at close to the speed of light. The craft would take one machine on a journey while it was still connected to the one on earth via the wormhole. Now, a simple step into the wormhole would transport you to a different place and a different time.

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Wormholes and closed timelike loops appear to be the main ways that time travel into the past would be possible. The limitation on this time travel into the past is that it would be impossible to travel back to a time before the machine was originally created. Although the aforementioned theories of general relativity are consistent for closed timelike curves and wormholes, the theories say nothing about the actual process of traveling through them. Quantum mechanics can be used to model possible scenarios, and yields the probability of each possible output. Quantum mechanics, when used in the context of time travel, has a so-called many-universe interpretation. This was first proposed by Hugh Everett III in 1957.3 It encompasses the idea that if something can physically happen, it does in some universe. Everett says that our reality is only one of many equally valid universes. There is a collection of universes, called a multiverse. Every multiverse has copies of every person, structure, and atom. For every possible event, every possible outcome is said to be played out on a different universe. This interpretation of quantum mechanics is quite controversial however, but does elicit the notion that it may be impossible to travel backward in time to our own universe or dimension. One must consider what past would be the destination of a time traveler. The notion that time travel could link parallel universes, has been anticipated in science fiction novels, and is even depicted in the popular television series "Sliders." In this program, a "sliding machine" creates a wormhole that links two parallel dimensions. Each week the group of "sliders" jump into the wormhole and emerge in the same place and time, but a different dimension. They can run into their other selves and experience a reality that has yielded a vastly different society than their own. The interesting thing is that the stuff of science fiction, can be deduced from existing physical theory. All the claims made about time travel are consequences of basic scientific laws and standard quantum mechanics.

The proposal of time travel is backed by scientific theory, but that is not enough to make it realistically possible. Numerous arguments are proposed that that prevent time travel into the past. Both common sense and scientific fact construct serious obstacles. A major argument against time travel into the past is called the autonomy principle, better know as the grandfather paradox. This paradox is created when a time traveler goes back in time to meet his or her grandfather. Now upon their introduction it would be possible to change the course of events that lead up to your grandfather and grandmother marrying. You could tell him something about a family secret to convince him you are who you say you are, and he may proceed to tell his soon to be wife. She may in turn doubt his sanity and have him committed. Thus your grandparents would never have your mother, and therefore you couldn’t be born! But then how could you have ever existed to travel back in time if you don’t exist? You would have had to have been created via autonomy. The next question would be, if your mother was never born, then when you return to the future would anything you did in your life exist? Or would you, your friends, your home etc. never have existed? This is clearly an inconsistency paradox that would rule out time travel, yet interestingly enough the laws of physics do not forbid such excursions. The multiverse concept eradicates the problem of the autonomy principal, because it allows time travel to the past, but to a different universe. You would meet the person who was your grandfather in your universe, but never married your grandmother in his universe. In the universe that you traveled to, you never existed.

Another argument of impossibility is called the chronology principal. This principal states that time travelers could bring information to the past that could be used to create new ideas and products. This would involve no creative energy on the part of the "inventor." Imagine that Pablo Ruiz y Picasso, the most influential and successful artist of the 20th century, were to travel back in time to meet his younger self. Assuming he stays in his correct universe, he could give his younger self his portfolio containing copies of his paintings, sculptures, graphic art, and ceramics. The young version of Picasso could then meticulously copy the reproductions, profoundly and irrevocably affecting the future of art. Thus, the reproductions exist because they are copied from the originals, and the originals exist because they are copied from the reproductions. No creative energy would have ever been expended to create the masterpieces! 3 This chronology principal rules out travel into the past.

A notion that was once nothing more than science fiction, is now a concept that’s becoming reality. Einstein’s theories of general and special relativity can be used to actually prove that time travel is possible, and research has shown that fast moving craft can travel into the future. Time dilation is the easiest method because it merely requires high velocity motion to experience time travel.3 Phenomena known as wormholes and closed timelike curves are possible means of time travel into the future and the past.4 Traveling into the past is a task which is much more difficult however. Its theory involves complicated scenarios of tears in four dimensional space-time, energy equivalent to that of an exploding star, and traveling near the speed of light. Both common sense and scientific fact can be used to paint scenarios that become serious obstacles. Yet even these hindrances can be explained away! If the multiverse concept is reality, then most present ideas of time travel are based on a false reality. If time travel is completely impossible then the reason has yet to be discovered.

Article By

Brian

References

1) Bagnall, Phil , "Where have all the time travelers gone?" New Scientist July 6 1996, v151

2) Deutsch, David, & Lockwood, Michael , "The quantum physics of time travel," Scientific American March 1994, v270

3) Parsons, Paul , "A warped view of time travel," Science October 11 1996, v274

4) "How to murder your grandfather and still get born," The Economist January 20 1996, v338

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