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2007-04-09 00:43:02 · 8 answers · asked by nishantverma123 1 in Science & Mathematics Astronomy & Space

8 answers

Yes, if human technology continues as it has, then there will probably be time travel in the future, if we exist in a four dimensional reality.

We are used to the idea of living in a three dimensional space. Time would be our fourth dimension. (Science predicts at least 11 dimensions.) If we only exist in three dimensions, then the past is gone and the future does not yet exist, and so traveling to them would be impossible because all we have is now. If every moment is connected by a line of time, then the past and the future exist and time travel is possible

Another possibility is that, although we exist with one dimensional time, time could also have multiple dimensions and there could be alternate realities. The same principles which would allow time travel would also allow travel between different realities, or simply travel from one place to another. The trick is to understand the nature of multiple dimensions.

The easiest way to understand dimensional theory is to imagine a two dimensional reality, and then extrapolate out from there. Imagine a piece of paper. Now imagine a race of 2 dimensional stick people living on the paper. As they look at each other, they can only see the outside of the lines creating they're bodies, but from your 3 dimensional perspective, you can see inside they're bodies, and inside locked cabinets, and every secret place in their reality. You (living in this three dimensional reality) see one of these stick people, and you say, "Hey you!" the stick man looks around, but there's no one near him on the page. He thought he heard something, but he's not sure because most of the sound waves were moving perpendicular to his reality and so they were barely perceptible to his 2 dimensional ears. You get right next to his ear, and say, "Hey, I'm talking to you." He jumps at the sound of someone whispering in his ear. You push on the man against the paper. He feels an odd and unnerving sensation for which he has no ability to understand. (It's actually described much better in the book Flatland: A Romance of Many Dimensions by Edwin A. Abbott, which is 82 pages, very easy to read and available from Amazon for $1.50) Now imagine taking a pair of scissors, and cutting out one of the people, and then taking that bit of paper and splicing it in to another place on the page. From the point of view of our 2 dimensional friend, he was just teleported to a different location.

Time travel works on the same principle. We just have to figure out how to travel outside of our own space-time through the other dimensions.

In reading through questions about Time travel, the most common complaint is that if time travel is possible, then where are all the time tourists? Cell phones let us communicate over vast distances, but the process requires at least two cell phones to operate. Until time machines are invented (receiving and sending) time travelers can not come through them. In order to splice in the new bit of reality, a matching bit of the current reality must first be removed.

2007-04-09 03:11:50 · answer #1 · answered by j_doggie_dogg 6 · 0 0

not really, travel to the future would be iffy at best, seeing how the future hinges on billions of individual choices, the process of getting to the "correct" future would be near impossible (the theory is that people actually travel independently through time in their own little universe and touching others at moments where they intersect). Going backwards in time would be simpler (we know the choices that have been made) and moving back from that point would be simple, but a slight change could alter the travelers future from the point of change (the whole, step on a bug in the past theory). So I believe time travel to the past will become a viable research tool, but not much more, painful steps would have to be taken to not interfere or interact with anything.

2007-04-09 08:01:18 · answer #2 · answered by kerfitz 6 · 1 0

THERE IS NO SUCH THING AS 'CONSTANT TIME'. Man made time machine is extremely difficult to be built.(coz of the few reasons told by colin p-the above ans.) but natural time machines do exist. -neutron stars , pulsating stars, black holes help to achieve time travel.
In physics there is nothing to forbid time travel. the universe is like a rubber sheet in the 4 dimensional whole (x,y,z axes for space-3D and the 4th dimension is time ) if you put a heavy object on the rubber sheet it bends .same way any body with high density (neutron star) would fluctuate the space and time around it. see relativity. A ship travelling beside an enormous densitied body would have ellapsed time in it. It's true . and i dont know how big u r and how much u understood. it requires more complicated work to explain time travel(not like u see in the movies) time travel is possible and how much is only dependent in the development of man's wit and tecchnology( which is in the near future i belive)

2007-04-09 08:48:16 · answer #3 · answered by stranger 2 · 1 0

yeah actually we are doing time travel everyday. for a average person that drives around 20 miles a day for 4 days out of the week and walks a average of about 4 or 5 miles they go about 2 seconds back in time. 2 seconds isn't noticable but everyone does it. try setting your watch to the exact time with seconds and everthing to a clock that stays in one place then go back and check it a week or two later and you will realize that your watch is 2 to 4 seconds slower. they have done research on this. the faster you move the faster you move back in time just, its never noticable. in fact they also say that once you reach the speed of light you could actually start going into the future, that my friend I'm not sure if they ever will meet but as for going back in time yeah there is a future don't ask how they are going to get back out of the past thou.

2007-04-09 08:45:48 · answer #4 · answered by eclipsefreak 4 · 0 0

I think it has a future and a past, but just now no now.
It is theoretically possible to build time machine but they have certain problems They would be able to travel forwards and backwards in tim only as long as the time the machine is running. The second more major problem is the amount of energy involved. No time machine would be able to be kept running for long.
so for now exploring the future and past is certainly in the future and then only in a limited way.

2007-04-09 08:09:42 · answer #5 · answered by colin p 3 · 0 0

I believe time travel is unattainable.

Firstly the concept of "Time" is man-made, we would exist on this earth even if we had not created clocks and calenders.

Secondly, if at any point in the future humanity manages to create a 'time machine' then why haven't they come back to today and told us about it?

2007-04-09 07:53:05 · answer #6 · answered by a_life_lessordinary 2 · 0 0

If it does then quantum theories fall apart and we don't exists anymore. Since we seem to be here, I'd pretty much discount it.

2007-04-09 08:17:00 · answer #7 · answered by Gene 7 · 0 0

If timetravel was a possibility it should also have a past, shouldn´t it? There should be lots and lots of timetourist all around.

2007-04-09 07:57:54 · answer #8 · answered by DrAnders_pHd 6 · 0 0

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