Moreta
Admiral
Squirrel Extraordinaire
Ickle Squiggle
Posts: 1,618
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Post by Moreta on Jan 1, 2005 20:27:29 GMT -5
Time travel is pssible, but with the current technology, highly inefficient and impractical. It can be done if you can accelerate past the speed of light. The problem is, that the speed of light is infinite. No matter how fast you go, light will always be going faster that you. That theory holds true in most cases. However, by warping space, you can give yourself the boost to go faster. This is not as easy a task to accomplish as you may think. The fabric of time moves at the fringes of a black hole. Not only would you need some way to accelerate at an unbelievable pace, you would also need a way to escape the black hole. There is a safer, more efficient way of doing this. If you can make beams of light travel in a circular pattern, you can move the fabric of time more efficiently than you could a black hole. So the only problem left is making a way to go fast enough. That is in fact not entirely true. Light does not travel at an infinite speed, if it did, it wouldnt take any time for light to travel from one place to another. Since we know that is not true, it must take a certain amount of time. In a vacuum light travels at about 3 x 108m/s and in anything else it slows down. It just so happens that the universal speed limit is exactly the same value, and some think if the speed limit were greater, the speed of light would be greater too. This universal speed limit is what prevents us travelling faster than light, for in fact, as our speed increases, so does our mass. As you get closer to the speed of light, the rate at which your mass increases goes up, so that at the point where you are travelling at the speed of light, you weight is infinite. This means you would need an infinite amount of energy to accelerate anymore, and therefore it is not possible to go faster.
It is generally agreed though that going faster than light would take you back in time. There is one way they believe might work, though it would be rather tricky. When you travel close to a black hole, its gravity is so strong that it actually slows down light slightly. This would mean that you could still accelerate up to the speed limit, but that the light would be going slower, and therefore you go back in time... or wait, going faster than light might take you forwards actually
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Post by timewarp on Jan 16, 2005 19:10:13 GMT -5
That is in fact not entirely true. Light does not travel at an infinite speed, if it did, it wouldnt take any time for light to travel from one place to another. Since we know that is not true, it must take a certain amount of time. In a vacuum light travels at about 3 x 108m/s and in anything else it slows down. That speed is relative to our speed. Namely, the speed of the earth travelling around the sun. That is where bending the fabric of space comes in. Since it requires no energy, its exactly the cosmic loophole needed to accelerate past the limit.Not slows, turns.[/color][/quote]No. Planes do not go faster than the speed of light, and yet, some planes have traveled around the world fast enough to go forward in time by a fraction of a second.
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Post by nymphelyn on Jan 16, 2005 21:29:23 GMT -5
Has anyone here seen Donnie Darko. That is all about time travel, and allthough its a film it seems logical. ;D This is like an 'extra' bit of info hidden on the net for fans of the film, there is NO book, just that page, and its 'fake' but read it... Its interesting and not at all that farfetched www.tangent-universe.org/dump/time_travel.html
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syborg
Lt Commander
Posts: 382
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Post by syborg on Apr 20, 2005 10:59:55 GMT -5
By the time travel is found to be possible, it will be declared illegal, because the first time traveller would be someone who hates the company who hired him for the mission, because he would go on a rampage, kill all his colleagues and associates, leaving behind lots of evidence - however the past self of that person would have perfectly good alibis of not being anywhere near where the crimes have occurred, the murders will have taken place long before the company was formed.
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syborg
Lt Commander
Posts: 382
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Post by syborg on Apr 23, 2005 12:06:43 GMT -5
If time is perceived as fuel which thrusts into the furure, then if that energy or fuel can controlled, right now time moves only in direction at its own pace. If this 'energy' can be controlled, we be able accelerate into the far future. Reversing this 'ernergy' would enable us to move backwards - we will have anti-time. Learning physics and the Newtons Laws, everything was defined except time on which the laws were based. Time itself surprisingly has no scientific definiation.
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Post by timewarp on Apr 23, 2005 14:59:29 GMT -5
If time is perceived as fuel which thrusts into the furure, then if that energy or fuel can controlled, right now time moves only in direction at its own pace. If this 'energy' can be controlled, we be able accelerate into the far future. Reversing this 'ernergy' would enable us to move backwards - we will have anti-time. Learning physics and the Newtons Laws, everything was defined except time on which the laws were based. Time itself surprisingly has no scientific definiation. Time is generally thought of as being another dimention. Just like length, width, or height. This is why time travel is possible, because there are two directions in time. Just like a line has two directions.
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Post by theartak on Jun 19, 2005 20:32:32 GMT -5
Okay, here's an article, and a question. The article: news.bbc.co.uk/2/hi/science/nature/4097258.stmThe Question (You might want to read the article to understand it): I'm no quantum physics person by a long shot. But...this idea seems like a bit of an oversimplification to me. Wouldn't an event being changed in the past remove our memory of it? If a person were to disappear due to some action in the past, would not our memories of that person disappear also? It seems to me this idea they are putting forward would make a lot of things pointless...It's like saying "You can't go to the store unless you end up there." What if I decide to go to the gas station first? That's how I see it, anyway. But I'm probably wrong.
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Post by CC on Jun 20, 2005 3:06:21 GMT -5
Has anyone here seen Donnie Darko. That is all about time travel, and allthough its a film it seems logical. ;D I love Donnie Darko - the whole tangent universe thing beautifully side steps the real issues of time travel. I was pondering on the whole question of time travel and have come to the conclusion that travelling into the future just cannot be possible. If we are to know our future, then we are given a choice to take different paths, different routes. The future would then no longer be the future. It would be different. Therefore the future that we saw in time travel, no longer exists. It would only be a possible future and no longer an absolute future. My brain is starting to hurt here The same thing goes for travelling into the past. The present then becomes the future and anything we change, alters the future. There are many things I would like to change in my past - in particular a friend that got killed in an accident. We all have things like this that we would change given the chance but if everyone was doing this, it would lead to a cataclysmic imbalance in time and our world just could not substantiate it. Life as we know it would cease to be and we would be in complete turmoil. Now, I love history and great literature and I would love to be a fly on the wall in some periods in history to see why people made the choices they did and to see what really happened in some great mysteries, but I just dont't see how that could happen. *wanders off smirking to TARDIS*
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xkamelx
Global Moderator
Check Those Corners
Posts: 11,108
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Post by xkamelx on Jun 21, 2005 23:21:34 GMT -5
Okay, here's an article, and a question. The article: news.bbc.co.uk/2/hi/science/nature/4097258.stmThe Question (You might want to read the article to understand it): I'm no quantum physics person by a long shot. But...this idea seems like a bit of an oversimplification to me. Wouldn't an event being changed in the past remove our memory of it? If a person were to disappear due to some action in the past, would not our memories of that person disappear also? It seems to me this idea they are putting forward would make a lot of things pointless...It's like saying "You can't go to the store unless you end up there." What if I decide to go to the gas station first? That's how I see it, anyway. But I'm probably wrong. That has always been a problem with time travel theory. If you go back and killed me as a kid, Ar;Tak, then how could you remember me? TR wouldn't exist, as neither would my memory of you. However, since you did see me, and you are in the past killing me, I don't think your memory changes with the future. By the time you leave the past, to return to the present, the world has went on all of those years, with no one from here ever knowing me, but since you skipped those years in which the world has changed to exclude me, your memory is not changed as everyone elses is.
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Asli Notaree
Ensign
"Not if anything to say about it I have" ~Yoda
Posts: 29
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Post by Asli Notaree on Jun 22, 2005 19:24:56 GMT -5
What do you guys think of time travel? Do you think it is possable? If so, how would you imagine it is done? Would we just push a button, use gravity somehow, a singularity, speed of light? ect. And one cannot travel through time w/out taking paradoxs into example. Do we really travel to other worldlines as John Titor states, which would not cause paradoxs? Or do we travel into other times of our own contiuum? If time travel is possable, how come we havent had any confirmation of meeting someone from the future yet? Let us know your ideas and theories! ~Myke I tottaly agree, that is exactly what I was gonna say when I saw this thread.
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Post by Favorite15 on Jun 25, 2005 22:36:47 GMT -5
Our passage through time is our lives, correct? So, if we were to alter time in anyway the effects on life are limitless. To make up for this and other things that alter life, there are infinite possibilites for the future.
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syborg
Lt Commander
Posts: 382
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Post by syborg on Jun 26, 2005 10:53:09 GMT -5
Actually there aliens run our galaxy, they have altered our brains in such a way so that we can make equations which prove that we can neither move faster than light and time travel is impossible. Just when the visit our world they erase our memory, we observe the universe they want us to so we are really seeing their version of reality. But human beings are smarter than that, they invented science fiction and fantasy. Actually everything which is science fiction and fantasy is the reality these aliens are trying to hide from us. What today is considered science fact is a fabrication. Because our brains for the most part have been programmed to accept 'hard facts' are only the things the alien want to believe. Even when see through a telescope we see what the aliens want us to see. A great way to control a galaxy and preventing us from becoming space travellers and challenge the aliens.
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Post by Favorite15 on Jun 26, 2005 13:46:53 GMT -5
Actually there aliens run our galaxy, they have altered our brains in such a way so that we can make equations which prove that we can neither move faster than light and time travel is impossible. Just when the visit our world they erase our memory, we observe the universe they want us to so we are really seeing their version of reality. But human beings are smarter than that, they invented science fiction and fantasy. Actually everything which is science fiction and fantasy is the reality these aliens are trying to hide from us. What today is considered science fact is a fabrication. Because our brains for the most part have been programmed to accept 'hard facts' are only the things the alien want to believe. Even when see through a telescope we see what the aliens want us to see. A great way to control a galaxy and preventing us from becoming space travellers and challenge the aliens. I like this entire idea, but it is a bit extreme.
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combesjd
Cadet
Wisdom preserves the life of it's possessor
Posts: 2
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Post by combesjd on Jul 8, 2005 20:57:30 GMT -5
One problem with time travel is the speed that the earth is moving through space, which is 185 miles per second (or greater). That means that for every second you move in time, you will also have to move at least 185 miles in order to stay on the earth. You can further calculate the following distances for the amount of time traveled: 1 minute - 11,100 miles 1 hour - 666,000 miles 1 day - 15,984,000 miles 1 week - 111,888,000 miles 1 year - 831,168,000 miles
Then there's the matter of what is the distance of an amount of time, since time is just another dimension in space-time. I believe that the limit set by the speed of light tells us how to convert an amount of time to a distance. I believe the speed limit is caused because at that speed an object is moving the same distance in time as in space. So that leads to 1 second being 186,300 miles.
So if we are to travel through time, we have to travel immense distances also. And we have to be very accurate in how far and in what direction, because being just a few feet off would be disastrous.
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oblivion
Admiral
Keeper of the Chapa'i
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Post by oblivion on Jul 9, 2005 11:56:50 GMT -5
One problem with time travel is the speed that the earth is moving through space, which is 185 miles per second (or greater). That means that for every second you move in time, you will also have to move at least 185 miles in order to stay on the earth. You can further calculate the following distances for the amount of time traveled: 1 minute - 11,100 miles 1 hour - 666,000 miles 1 day - 15,984,000 miles 1 week - 111,888,000 miles 1 year - 831,168,000 miles Then there's the matter of what is the distance of an amount of time, since time is just another dimension in space-time. I believe that the limit set by the speed of light tells us how to convert an amount of time to a distance. I believe the speed limit is caused because at that speed an object is moving the same distance in time as in space. So that leads to 1 second being 186,300 miles. So if we are to travel through time, we have to travel immense distances also. And we have to be very accurate in how far and in what direction, because being just a few feet off would be disastrous. LOL! Very true! A few SF stories have at least made an effort to explain this problem, though they didn't do much to explain how to solve it. That's the beauty of a time machine in a story. You just write a paragraph to explain that it takes the distance offset into account, and you're done. Back to the paradox of murdering your grandfather.
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