How can we theorically go back to the past?

Question

I understand pretty well the theorical explanations about how a FORWARD time travel might happen. But I do not understand theorically how a BACKWARD time travel might happen. I think it is more chaotic to explan it. Could you explain it to me?

Answer 1

this can explain it very well because it really happened

http://www.history.navy.mil/faqs/faq21-1.htm

http://en.wikipedia.org/wiki/Philadelphia_Experiment

the Philadelphia Experiment was the project of Albert Einstein and Nikola Tesla messing with time space under navy orders

Answer 2

Nothing in physics proves or disproves time travel backwards at the moment. Anything mentioned besides is anyones guess. String theory theories that the universe has 10 dimentions, which connects general relativity and quantum mechanics, and also has some ideas of the subject. In theory if you could go faster then the speed of light in a vacuum, then you could visit the "past", however it is inpossible to travel faster then light in vacuum, using normal acceleration, due to mass increase. If you flash a flashlight in a faster then light spacecraft, then will the light hit the back or front of the spacecraft? The answer various of the reference point, so this rules out, faster then light travel in a normal way.

Answer 3

Change the context and you will understand it more easily. Instead of traveling through time, think of running. If you could run much faster than someone else, it is possible that you could get to the finish line and then run back to the starting point before the other person even has a chance to get started. Traveling to the past is something like that. If you can travel faster than light, then you can race light to a point before it started out on the journey to reach you. For instance, it takes 8 minutes for light to get to us from the sun. If you could travel the same distance in 7 minutes, you would be able to see 1 minute into the past.

You would be able to stand there and watch the ray of light coming toward you.

Answer 4

theorically impossible. also theoretically. you see a theory is something that has been proven to work thru experiment. doesnt make the outcome 100% fact. but, hypothetically if one could travel fast enough to outrun the speed of light then one could supposedly see things before they happen in light speed terms. for instance, if a rocket launches and immediately reaches a speed faster than light, then returns to the same destination, its image could still be veiwed on or near the launch pad by the rocket itself. matter simply cannot move that quick. effectively making travel ,as we know it, in time unatainable physically. i have not heard a good argument against clairvoiance being a meathod of time travel.

Answer 5

Space, which is actually Space-Time, can be warped. Under the right conditions, it can be warped such that it curves back on itself. When this happens, it's called a wormhole.

Theoretically, this wormhole can lead to a past, but it isn't fit for human travel.

Theoretically, no known physical laws prevent time travel to the past, but the situation causes many questions to arise.

If you go back in time, the present you came from, soon becomes your past, and the time you went back to must become your future.

One theory is, that if you were to actually go back in time, you'd cause the time line to split and you create a new future.

Another theory is, if you were to go back in time, the universe will prevent anything from occuring that will change the outcome of the situation. For example, you'd be prevented from killing either of your parents before your birth. You'd also be prevent from killing your younger self.
Of course, because merely existing somewhere can greatly influence things, you may actually be prevented from traveling back in time by some unknown means.

Answer 6

One potential method for traveling backwards in time is the manipulation of atomic spin. This can possibly be done with electromagnetic fields in a manner similar to an analysis with nuclear magnetic resonance. The NMR uses a strong exterior magnetic field to align the nuclei of atoms with odd numbers of protons and neutrons. It then uses an electromagnetic field to perturb this alignment to examine the constituents of molecules. If one were to find a way to align the nuclei of all atoms in an object and then cause an inverse oscillation to the normal state of these atoms, theoretically that would cause time to work in reverse for the object. Time is most easily kept with an atomic clock, which measures time based on the oscillation between the nucleus of an atom and its surrounding electrons. If that is the perfect time keeper, perhaps it is the origin of time itself. Therefore, to adjust that oscillation is to adjust the flow of time for the atoms that compose an object, thus altering the flow of time for the object itself.

Answer 7

Your trouble may be you're trying to grasp it with too linear of thinking.Think of it like this: Time has three dimensions. This allows events to occupy the same point in space provided none of them have the same point in time. However, on the fundamental particle level, electrons can be in the same place and same apparent time, as long as they have different coordinates in other dimensions of time. Quantum superposition. The universe has no edges or boundaries because it curves back in on itself in both space and time, so it has no beginning or end in space or time. You could never travel more than a few billion light years away without moving back to where you started. Think of it more abstractly, as being more simultaneous, or as one superimposed on top of the other, and you should have no problem wrapping your head around it.

Answer 8

Ok i have a good answer and that one is that all of u are compleat idots especilly that wearm hole guy.
the real answer is that if u take pure merkury and u take 1.60% of the fire frome the sun and mix it with 5.60%of pie and put it in a centaner full of pudding and ster it with a member of the AAA and then u tast it and if u get it jest right then u will tast a good sensashion of death and if u dont die then u got the mixture right and u should go back about 5.98 seconds to stop ur self frome getting lead posioning from eating muffens
lol

Answer 9

To find an explanation of backward time travel is easy. I may sound idiotic by saying that it's 'easy'. But read the following link if you want to know my own view of theoretically beating time in its own turf.
Wormholes are interesting shortcuts, but they have been excluded for lucidity.
http://harmonicsgalore.blogspot.com/2007/01/back-to-future.html

Answer 10

This might not make sense to anyone, but the theory of relativity says that as you move faster, time for you slows down relative to everyone around you who is standing still. The idea is that as you approach the speed of light, time will theoretically stop.
So if you go faster than the speed of light, will time reverse?
Don't throw the chalk at me, please.