Time - Page 2

August 13, 2008, 2:27 PM

Quote:

Originally Posted by Casanova

What?

You ask those questions as if time travel is entirely possible and someone here must know the answers. Time travel (as far as the general public of the world are concerned) has never been accomplished and so there is absolutely no way that anyone can know if travelling to the past and undoing the future really changes anything, or creates a split time line, or another dimension.

I firmly believe that time travel will never be accomplished and it will never cease to be a fairy tale concept. When anyone tells you that going back in time and changing something changes the future they are lying to you because they just don't know that. Time travel is not possible and they cannot say for certain. For all we know, traveling back through time will turn you back into a sperm cell, or give you an extra arm, or even undo the very fabric of time itself.

Plus, if time travel was ever accomplished and someone did manage to go back in time and stop their grandparents ever meeting or w/e, who is to say that the grandparents wouldn't meet some other time? You can't predict that kind of thing.

I'm not saying that we all have an inevitable fate that can't be changed, a set path given to us at birth that we all walk blindly until our death. I'm saying that the ways of the world are a mystery to the human populace and there is no way of predicting anything.

Even the all-mighty weather man gets it wrong.

I know it's not possible, and probably never will be (I did say that in an earlier post) it's just purely speculation. What people think would happen, it's something to rattle your brain over if you tend to think about these sort of things. There isn't any right or wrong answers because we simply don't know, so theories and speculation is all we have, provides good food for thought.

August 13, 2008, 2:34 PM

Actually the size of the object does not change - the size from which we see it does. Most materials just burn up at such high speeds - There is evidence of this from comets and fireballs hitting our Earth. They're usually the size of grain of dust but it looks huge from our eyes. Yes, they'll warp and be distorted, but the actual size does not change - only the mass.

As for -

Quote:

it's like, when someone first speculated that the earth was round, you would have been the person to say "well, we'll never know cuz no one will ever be able to travel all the way around it".

The Earth is actual matter whereas time isn't. It has been theorized that you'll travel through time by breaking the speed of electromagnetic waves - light waves to be exact. However, we won't 'travel' through it, it would look like we are. That's based upon Einsteins general relativity.

August 13, 2008, 6:58 PM

Quote:

Originally Posted by Gabranth

Actually the size of the object does not change - the size from which we see it does. Most materials just burn up at such high speeds - There is evidence of this from comets and fireballs hitting our Earth. They're usually the size of grain of dust but it looks huge from our eyes. Yes, they'll warp and be distorted, but the actual size does not change - only the mass.

As for -
The Earth is actual matter whereas time isn't. It has been theorized that you'll travel through time by breaking the speed of electromagnetic waves - light waves to be exact. However, we won't 'travel' through it, it would look like we are. That's based upon Einsteins general relativity.

yeah i didn't quite remember the exact theory. i remembered some of it from quantum.

but the earth being round thing wasn't in reference to time or travel or anything like that. it was just an analogy to how he was looking at the situation.

August 14, 2008, 12:51 PM

Well, scientists are almost certain that time travel exists....but is not possible. If we agree on the fourth spacial dimension of space-time, then that means gravity distorts EM waves; this in turn affects our thinking. If you think about it, we see everything in 3D, but say if we drew a '3D cube' on some paper. Is it 3D now? No, but its difficult for us to tell the difference. (yes I know its many atoms thick but that's an example) That's because we're used to seeing everything in 3D. What if we were used to seeing everything in 4D, or even space-time? It would be difficult to see 3D wouldn't it?

So if gravity affects EM waves, it affects time itself. For example: If someone were to go near a black hole, they would go slower and slower until they would stop, and disappear into a singularity. This means matter affects space-time, or even 4D. You might ask what gravity is - its the affect upon space-time we see from matter.

So no living being can travel through time, but particles can. However, if look upon it from another angle, we're traveling through time faster than a particle is near matter than has larger mass than us. The larger the mass, the larger the affect upon space-time. A larger scaled example would be particles being sucked into a black hole - we're traveling faster than the particles.

August 14, 2008, 4:13 PM

I think it could be argued that we are moving through time right now. Even as I type this response, and as you read, we are moving forward slowly, second by second.

Then again, is time anything but a human construct? Where did the idea of a second come from? I know how a second is measured in modern times, but where did the idea to separate time into periods of different sizes originate? Did humankind just make these distinctions arbitrarily?

August 14, 2008, 4:24 PM

It relies upon the base 10 decimal system. Technically, everything is based on 0-10, numbers, liters, miles etc. They're all interrelated, so if everything were to be settled upon say....a 71 system, then every second would account for the same amount of time, just it would be 71 seconds when compared to our system.

If we were to move to the Sun (I know we can't, but lets say we can) we would age slower due to the Sun's large mass. But we can only compare the results if someone stays on Earth. say if someone went to the Sun for 50 years then came back - they would look as if they were 40 years old or something.

August 20, 2008, 8:02 PM

Time is a dimension guys remember.
I believe that to travel in time one would need a time machine at both ends, if this was not so, we would have already seen people from the future. If time travel is at all possible, when our first time machine is switched on, it would be that point in time that we could travel back to if we were in the future O_o

Say someone had just built a time machine, assuming he hasn't immediately destroyed it he could travel into the future, however he would have to wait at least the minimal amount of time before he could travel into the past, as far as to the point of creation of his own time machine.
So, in theory if time travel is in fact possible, the second we build a successful time machine, someone should come through it from the future

August 20, 2008, 8:23 PM

I've always found this topic interesting, but never taken it seriously. There are so many films and TV programmes like Dr Who (of which I'm a big fan) and waching them pretty much explains everything. I remember in an earlier episode of Dr Who, Rose saves her Dad from being hit by a car. As he was supposed to be killed at that moment, and she stops him, this completely screws up time... sorry, I'm going completely off the subject here, but yeah, the only way I think time travel would be possible, is IF there are paralel universes that are behind ours, or in front, then perhaps traviling to them... Maybe?

August 20, 2008, 8:36 PM

Quote:

Originally Posted by reddas

I've always found this topic interesting, but never taken it seriously. There are so many films and TV programmes like Dr Who (of which I'm a big fan) and waching them pretty much explains everything. I remember in an earlier episode of Dr Who, Rose saves her Dad from being hit by a car. As he was supposed to be killed at that moment, and she stops him, this completely screws up time... sorry, I'm going completely off the subject here, but yeah, the only way I think time travel would be possible, is IF there are paralel universes that are behind ours, or in front, then perhaps traviling to them... Maybe?

Funnily enough, that episode was on yesterday on BBC3. Really good episode, that.

You see them go back, Rose messes up, so they go back again, see themselves there at that same moment. Pretty cool stuff.

August 20, 2008, 8:42 PM

Quote:

Originally Posted by reddas

I've always found this topic interesting, but never taken it seriously. There are so many films and TV programmes like Dr Who (of which I'm a big fan) and waching them pretty much explains everything. I remember in an earlier episode of Dr Who, Rose saves her Dad from being hit by a car. As he was supposed to be killed at that moment, and she stops him, this completely screws up time... sorry, I'm going completely off the subject here, but yeah, the only way I think time travel would be possible, is IF there are paralel universes that are behind ours, or in front, then perhaps traviling to them... Maybe?

Quote:

Originally Posted by DLFlux

Funnily enough, that episode was on yesterday on BBC3. Really good episode, that.

You see them go back, Rose messes up, so they go back again, see themselves there at that same moment. Pretty cool stuff.

Funnily enough, you both forgot to mention that messing with a timeline results in summoning a horde of scary demon-harpies.

Like in that episode.

Perhaps we shouldnt mess with time travel =P