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Time Travel

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NICK THE PIE MAN

NICK THE PIE MAN

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Just been reading the 'Back to the future' posts and it made me think. This is a question for the scientific posters on BF.

Is time travel somehow scentifically possible and if not, have they tried it at one stage or another?

It would be an incredible feat if it could be done and would be mindblowing.

Over to you everyone...
 
I'm another who would certainly like to learn more about this exciting prospect.

Please if anyone has an opinion, we would like to hear it.
 
could be possible if we manage to bend the space-time continuum and leap across to another part of the universe.... but then again, why have we never seen anyone fron the future who HAS travelled back in time?
 
Originally posted by nicko18
could be possible if we manage to bend the space-time continuum and leap across to another part of the universe.... but then again, why have we never seen anyone fron the future who HAS travelled back in time?
Click to expand...

Some people use this theory to explain ghosts. Have you seen The Others?
 

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what would happen if you dropped a tennis ball through a time warp, and it came out, a few seconds back in time, and knocked itself from even entering in the first place?
 
It all comes back to what you think time is. Like that 'time' thread we had.

I don't think time travel is possible - because time is not tangible. You can't go somewhere in it, it's just a concept. It's like, where is time? Where would you be if you went back in time? I'm a person who likes logic and needs a reason, so time travel doesn't make sense to me. Otherwise for all we know, we are back in time, and there are people in the future. Nah, just doesn't work to me :D

Nicko, you have some good points there! :)
 
Totally impossible on this world.

Time does not exist remember? ;)
Besides, you can't go back to something that has already happened, what's done is done, what's gone is gone.

Travelling into the future would be possible though.
Take a leaf out of Demolition Man being frozen or preventing the ageing process would allow someone to travel into the future instantaneously (i.e. the last thing he would remember is being frozen!). But he would not be able to travel back to tell everyone about the future!

Walt Disney is frozen, he may be dead, but if we do find a cure for death, Walt Disney is technically speaking...a 'time traveller' is he not?

On the other hand...
Has anyone read Timeline by Michael Chrichton?

I wont go too deep, but the way time travel worked in the book was this, as we currently sit, we are one of many 'dimensions' all standing at the same point in 'time'. One of these dimensions is our own, but what if there was another dimension where Hitler won the Second World War? What if there was a dimension where America was never discovered? Well, the book went on to discuss infinite dimensions in which things have or had not happened, as in, it would be the same year (2002) but it would be at a different stage of human evolution, therefore, if you wanted to travel to the old West, you would have to find the dimension in which technology or the human psyche had not yet evolved past that point.

If you want to find out how they get to these other dimensions, read the book!

(apologies to anyone who has read the book, that is how I remember the story, correct me if I am wrong)
 
certainly time slowing down is a very real phenomenon. did you know after travelling the globe on a jumbo jet, when you land you will have aged about 6 microseconds less than the guy on the ground :eek:
 
There is also an episode of Red Dwarf called Parallel Universe that explores the concept of there being an infinite number of parallel universes in which every possibility ever is played out.

In one universe, you choose the beef and you're fine, in another you have the fish and die of food poisoning.
 
Originally posted by clucas91
Totally impossible on this world.

Time does not exist remember? ;)
Besides, you can't go back to something that has already happened, what's done is done, what's gone is gone.

Travelling into the future would be possible though.
Take a leaf out of Demolition Man being frozen or preventing the ageing process would allow someone to travel into the future instantaneously (i.e. the last thing he would remember is being frozen!). But he would not be able to travel back to tell everyone about the future!

Walt Disney is frozen, he may be dead, but if we do find a cure for death, Walt Disney is technically speaking...a 'time traveller' is he not?

On the other hand...
Has anyone read Timeline by Michael Chrichton?

I wont go too deep, but the way time travel worked in the book was this, as we currently sit, we are one of many 'dimensions' all standing at the same point in 'time'. One of these dimensions is our own, but what if there was another dimension where Hitler won the Second World War? What if there was a dimension where America was never discovered? Well, the book went on to discuss infinite dimensions in which things have or had not happened, as in, it would be the same year (2002) but it would be at a different stage of human evolution, therefore, if you wanted to travel to the old West, you would have to find the dimension in which technology or the human psyche had not yet evolved past that point.

If you want to find out how they get to these other dimensions, read the book!

(apologies to anyone who has read the book, that is how I remember the story, correct me if I am wrong)
Click to expand...

the probability of finding a dimension whose evolution has precisely mimicked our own for billions of years, only to change when hitler won the war, would be absolutely miniscule
 
Originally posted by nicko18


the probability of finding a dimension whose evolution has precisely mimicked our own for billions of years, only to change when hitler won the war, would be absolutely miniscule
Click to expand...

Precisely, hence there being an infinite amount of these dimensions. But those were examples from the book.
 

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Originally posted by PrincessPark
There is also an episode of Red Dwarf called Parallel Universe that explores the concept of there being an infinite number of parallel universes in which every possibility ever is played out.

In one universe, you choose the beef and you're fine, in another you have the fish and die of food poisoning.
Click to expand...

Cool! So, somewhere, I'm married to Matty Lloyd? :D
 
Going forward - no probs, Einstein's theory of relativity predicts it and it has been tried and tested using atomic clocks orbiting the earth. Although any substantial jumps in time would require travelling at close to the speed of light, no that practical really.

Going backwards is a bit more of a hassle. Relativity doesn't rule it out and so is in theory possible. Some theorists believe worm holes that connect not only different regions but different times may exist. Go through one and you come out not only somewhere else, but somewhen else.

It's a bit too anti-rational for some. Stephen Hawkig suggested a "chronology protection conjecture" would prevent physical objects or influences looping back in time. For example quantum vacuum energy might surge without limit near the entrance, thereby blocking it.

And although no-one would ever actually fund research into time travel, it is a major question of physics.
 
Originally posted by Jim Boy
Going forward - no probs, Einstein's theory of relativity predicts it and it has been tried and tested using atomic clocks orbiting the earth. Although any substantial jumps in time would require travelling at close to the speed of light, no that practical really.
Click to expand...
people are travelling forward in time everywhere, im doing it right now.


Going backwards is a bit more of a hassle. Relativity doesn't rule it out and so is in theory possible.
Click to expand...

relativity rules out anything travelling faster than the speed of light.


i think slowing down and speeding up time is all we'll ever acheive, and only slowing relative to other people.
 

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Strooth, if time travel was possible I would go back to 1989 when I lent Tony Greig a beautiful gold fountain pen and to this day it remains burried some 6 or 8 inches under the bloody MCG pitch!
 
It is certainly possible to travel into the futire. We do it every day when we move at any speed. This was something that was mentioned in the "Back to the Future" thread and is worth re-iterating here.

Whenever you move, the world, around you speeds up (relative to you). If you hold a stop watch in your hand and run as fast as you can and count to 10, it will be 10.000000000001 seconds for everyone else, but 10 seconds exactly for you. From your viewpoint, the rest of the world would have looked like they were moving in fast motion. More time (i.e 10.00000000001 seconds) elapsed for everyone else in the 10 secodns it was for you, so they were in "fast-motion"

So, if you exaggerate it, and move incredibly fast for, say, 10 years on end, it will be 10 years for you, but 20 years for everyone else (depending on your speed)

If you move close to the speed of light, you will have hardly aged, while everyone else will be 50 years older. So, the closer you get to the speed of light, the more time stands still. If you could move at the speed of light, time (relative to you) would stand still.

So, the faster you move, the older all your friends get, relative to you! The moral: Just keep on the move!

So, therefore, if you move incredibly quickly you will move into the future quicker than it will take everyone else to get to the same point. Everytime you run to catch the bus, this happens, but it is too small to measure.
 
Originally posted by nicko18
relativity rules out anything travelling faster than the speed of light.
Click to expand...

Scientists in Germany have constructed a machine that can accelerate an electron to a speed 14 times greater than the speed of light. These experiments will either destroy Einsteins theory or at the very least alter in significantly.

Quantum physics has also discovered 13 dimensions at last count when trying to find a formula for the "string theory", which relates to quarks.

So different dimensions DO exist, and the speed of light is not the limit.

I have also read that in physics theory it is possible to travel back in time, but there is no physical evidence that something like that can be accomplished.
 
Originally posted by daddy_4_eyes


Scientists in Germany have constructed a machine that can accelerate an electron to a speed 14 times greater than the speed of light. These experiments will either destroy Einsteins theory or at the very least alter in significantly.

Quantum physics has also discovered 13 dimensions at last count when trying to find a formula for the "string theory", which relates to quarks.

So different dimensions DO exist, and the speed of light is not the limit.

I have also read that in physics theory it is possible to travel back in time, but there is no physical evidence that something like that can be accomplished.
Click to expand...

i very much doubt it, could you perhaps give a link, and are you sure that they were observing an electron as a particle, or were they studying its wave-like properties? even energy transmitted in wave form can not exceed the speed of light anyway
 

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