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Post by griffman on Jan 16, 2007 10:25:24 GMT -5
A few weeks ago my friends and I were having a discussion about time travel. Without linking me to websites, I want to know what you guys all think. Is time travel possible? If it is indeed possible, would things such as in Back to the Future actually happen (bringing back stock/sport information, Michael J. Fox disappearing because of editing history)? What other repercussions could there be?
I guess this also goes along the lines of dimensions too... so throw anything you know about dimensions in here too. We could just start a new discussion on dimension if you would rather... I guess whoever posts next in this will get to decide, everyone else will follow suit.
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Post by beckyh on Jan 18, 2007 17:38:53 GMT -5
During the conversation mentioned, I was involved.
I'd have to say my final conclusion was that humans are getting too smart for our own good and due to our own intelligence we will probably ruin the planet someday. Just trying to test time travel could cause huge problems with our planet as we know it, I think it'd be best to stay away.
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Post by vearmipone on Jan 26, 2007 9:28:59 GMT -5
If time travel was possible, it would send us to an alternate dimension. I different time line or however the doc put it in Back to the Future. Im sure you could either erase yourself or change everything about you just buy time travel, even if it had nothing to do with you. I might not be making sence, it's still early for me. But I would deffinately love to discuss this theory with anybody interested.
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aule
Lone Wolf
[M0n:45]
[M0:74]Do you fear death? Do you fear that dark abyss?
Posts: 141
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Post by aule on Feb 5, 2007 16:46:37 GMT -5
well, I sort of did a presentation about time travel (the actual subject was Einstein's relativity theorem and we stumbled onto time travel) but anyway, according to Einstein it is theoretically possible to time travel (with time dilatation etc) though it would involve being able to control the power of a dark hole (and knowing where to find one) which is practically almost impossible you must then also consider the enormous pressure you'll be in and there's also a fair chance that you will implode in the effort, but if you're willing to take a chance, lemme know what you discover
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Post by AREA666 on Feb 5, 2007 17:05:45 GMT -5
I love the idea of time travel. In my own theories I think there are an infinite number of realites that exist on one single plane of existance, which if you think about it has to be true if space is infinite. So in my theory time travel would technically be possible, but all you would be doing is simply traveling to some other point really far away where time is either before or after what you consider to be reality. In other theories I will know more about later since I will be dealing with the Theory of Relativity in school in a few months. But I do think that travel like that is possible. I am not sure how the blackhole comes into effect yet since I only glanced at the forumla used and it looked like it was just something really simple that was probably the basis for the Planet of The Apes movies, ie travel really fast which slows down time for you, but time where you were from moves at the same time. If travel like that is possible then I think it is only a forward linear kind so that it is only possible to go forward from when you left, but even then that is technically not even time travel, it is more akin to being in cryostasis. The main problem with time travel is that time is a mortal invention, which is why I like my own version of it since time would not even come into play since anything and everything is already existing, you just have to figure out how to find where and when you want to go, which I have no idea on how to do yet.
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Post by AREA666 on Feb 13, 2007 21:36:56 GMT -5
I learned some new things in my Medieval Western Philosophy class which could help out in your time travel debates, even though they do not technically speak directly of time travel. Basically the ideas came up when we were talking about time and eternity. Now the basic idea of eternity was very similar to my idea on how our universe is infinite which means that all things have to exist here already. Well for the eternity part the idea was basically that eternity has all things existing in one point and it never changes because everything that can exist must already exist with in it because when you talk about eternity you can not assign attributes to it such as "will be" or "was be", so it already has to have everything in it because there is nothing that is can not be, or was, that it already was not. Now with time, which is more related, there was two ideas. The first idea is Platonic in nature and it is that time is the moving image of eternity. Basically that just means that time is change and to change requires movement, so eternity must move in order to create time. That idea may not help much, but the other idea I think can. It is the Aristotelian view and it is that time is the measure of motion. This seems to validate the Theory of Relativity somewhat since it deals with speed, or some of the other time travel methods, like the ones used in Star Trek. But anyway the idea makes sense since if you want to tell the time you can look at a clock and measure how far a hand has gone to tell how much time has passed. I am not sure how this would apply in modern times of digital clocks, but it fits for an older clock, or a sun dial, but just keep in mind the idea did come out in the BC times. It also applies to the motion of the universe. Since the universe spins on its axis we would measure how far a planet has moved and assign some form of time to it. This would mean that planets near the outer edges would go through time faster then the planets on the inside since they travel a much greater distance in the same amount of time. So that is the basic ideas that hopefully can help out some. I do not have a really good understanding on them though so hopefully if you have questions I can answer them.
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Post by griffman on Feb 14, 2007 7:49:21 GMT -5
Since the universe spins on its axis we would measure how far a planet has moved and assign some form of time to it. This would mean that planets near the outer edges would go through time faster then the planets on the inside since they travel a much greater distance in the same amount of time. I'm sorta with you up until this point. Are you saying that the universe spins on some sort of axis like galaxies, solar systems, planets etc? I was under the impression that the universe was expanding, and that was it's only motion. If the universe does spin, then the second part gets me too (just a little). The outer planets in our solar system just take longer to go around the sun. Pluto (oh that's right it's not a planet, dumb Harvard people...).. Neptune takes 163 years, 263 days to make 1 revolution around the sun, as opposed to the earth's 365.25 days (.25 because of the leap year every 4 years). However, it rotates on it's axis every 16 hours and 7 minutes, so if we lived on Neptune instead of earth we would have 90,000 days in a year, or about 60,000 earth days.... Just to add on to the other topics... If you wanted to oppose the force of gravity in one of those black holes it wouldn't be all that challenging, until you got close enough that your instruments broke... but for the case of argument let's consider up until that point. The force of gravity is calculated by: F=G*(m1*m2)/(R^2) that is, the force of gravity = gravity constant * (mass object1 * mass object2) all divided by the distance between them squared. 6.67e-11 is the gravitational constant. Now, if we used an electric force: F=k*(q1*q2)/(R^2) (look familiar?) that is, the electric force = electric force constant*(charge1*charge2) divided by their distance apart squared). To find the strength of an electric field, which is what we'd have to use, we just divide by the second charge, making: E= kq1/R^2 The k constant is 8.99e9. Now, in order for the electric field to counteract the black hole (gravity) we have to set their difference = 0, because the sum of all the forces acting on an object at rest = 0. If we are at rest then we aren't being sucked into the black hole. E - F = 0 kq1/r^2 - Gm1m2/r^2 = 0 (kq1-Gm1m2)/r^2 = 0 kq1 - Gm1m2 = 0 we would have to know the mass of our spaceship and of the black hole, but since I'm getting ready for class we'll use something like my mass and the mass of the earth, just to compare the size of the forces. I'll set R = 5m (because I can jump really f-ing high)... m1= 90kg m2 = 5.97e24kg k = 8.99e9 N/m^2 G = 6.67e-11 m^3/(kg*s^2) kq1 - 3.58e16 = 0 kq1 = 3.58e16 q1 = 3.99e6 Coulombs This is a large value... but it can be come up with using the right instruments. I didn't include the fact that we didn't have to have the charge 5m away. If I didn't set the R's equal in both equations then we could have put the charge really close to us (even .1um would work) then that would just decrease the amount of charge we would have to have produced. www.hfml.ru.nl/pics/Movies/frog.mpgIs proof that it works, the Europeans used a frog though. We saw it in class, and our professor (who works at a magnet lab) has also done it. There is no harm done because there is only one charge, if the circuit were completed it's possible there would be damage done, considering the fact that a lot of electricity would be going through you. The reason it works is because our bodies are mostly made up of water which is a very polar molecule. The water molecules in our body rotate in the electric field to make the negative end pointing towards the positive charge, and the positive end pointing away from the positive charge. This in turn will allow us to float, as if we were a particle in the electric field. I am going to be late for class... so I'll go on into time travel next time I guess..
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Post by beckyh on Feb 14, 2007 9:17:32 GMT -5
Sometimes he comes home from Physics class talking like this, and I give him this blank stare face. So just so everyone knows, I'm blank staring now too. :-[HAPPY VALENTINE'S DAY!!!
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Post by griffman on Feb 14, 2007 9:45:44 GMT -5
Oh come on.. you didn't like the frog?
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Post by beckyh on Feb 15, 2007 5:48:24 GMT -5
The frog was definitely cool, but all the equations backing up the frog went way way way over my head.
I guess I'm just an Education major though...
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Post by griffman on Feb 15, 2007 12:46:21 GMT -5
There is nothing wrong with being an educated Education major like you are. It's the uneducated Education major's that I don't like... And just because you don't know physics doesn't mean much, I didn't know much about these equations before I took Physics..
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Post by Ari’laftia on Feb 15, 2007 15:51:57 GMT -5
there was a frog??? Where frog?? LOL Just kidding, Had to insert "Blond moment" there!
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Post by beckyh on Feb 15, 2007 16:05:38 GMT -5
LOL... it wasn't just you. I'm brunette to the core, and he had to show me the frog.
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Post by griffman on Feb 15, 2007 16:50:12 GMT -5
For those of you who don't want to read my post to find the frog: www.hfml.ru.nl/pics/Movies/frog.mpgHe floats.. This isn't time travel at all anymore... oops. I swear next time I'll say something about my thoughts on time travel.. I gotta get to a chem lab in about 10 minutes though.
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Post by Ari’laftia on Feb 15, 2007 17:53:39 GMT -5
hehehe Just messing with ya, Had to get away from all that serious stuff! I had seen it when they floated the spider, Didnt like it though how the legs all wiggled ...ech! Didnt they float a bunch of other things too?
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