is time travel possible? - Page 2

MBTN · #16 12-31-2003, 05:16 PM

Quote:

Originally Posted by Steel

Not to mention: Time doesn't exist. It's just something we made up in our heads.

That is true. There has always been and always will be a universe. It was never begotten, it always just was. Kinda hard to imagine it.

integra818 · #17 12-31-2003, 09:32 PM

Traveling into the future is posible. My teacher said something about moving faster tha light makes you age slower or something like that. If you we're in some "time travel tunnel" where you can go faster than light, you age slower...example: If you age half as slow as the rest of the world, 5 years bieng in the "tunnel" would mean the rest of the world has gone 10 years. If you were to age 1/10 as slowly, a year to you in the tunel is 10 years for the rest of the world. So, according to my teacher, you can travel into the future, as long as you let the 'future' happen first. I don't thikn you can travel back into time...what has happened before can't happen agian the same exact way.

chicago_guy · #18 12-31-2003, 09:51 PM

But the future isnt definite.....how can you travel to something that isnt there? You cant...you can try...but you wont like the result.

integra818 · #19 12-31-2003, 09:55 PM

Quote:

Originally Posted by chicago_guy

But the future isnt definite.....how can you travel to something that isnt there? You cant...you can try...but you wont like the result.

Re-read what I said and use your brain a little more. The future is'nt definate, but you're not SKIPPING time, you're just making it travel slower for you which makes normal time flow seem FAATER. Agian, re-read what I said.

loismustdie · #20 01-01-2004, 05:51 PM

integra818, your teacher is wrong, nothing travels faster than light, there is no tunnel like that, hasn't been theorized yet. and that wouldn't be considered traveling through time, just slowing your ageing process, and if you were to travel faster than light it would not just slow down time, but reverse time, i think you mean traveling at close to the speed of light. einstien theorized that if one twin was put in a spaceship and driven around space at near the speed of light for 40 years, an the other twin was just on earth for 40 years that the twin in space would have aged like 37 years.

turns out i was wrong me and my buds at eca figured out it is immpossible to travel back in time.

however it is possible to travel forward in time, it is called time dilation and you expierience it daily, from the time you started reading this post to the time you finished it.

chicago_guy · #21 01-01-2004, 06:32 PM

Quote:

Originally Posted by integra818

Re-read what I said and use your brain a little more. The future is'nt definate, but you're not SKIPPING time, you're just making it travel slower for you which makes normal time flow seem FAATER. Agian, re-read what I said.

I dont want to re-read it. I first read it when I had a couple beers in me, so of course I didnt use my brain at all.

Bronco2 · #22 01-01-2004, 07:13 PM

There is a good website called "HowStuffWorks" Time travel and matter transfer [Star Trek] stuff has been done ,but only with atoms/molecules.Be warned,you can get interested for hours in this site.

Bronco2 · #23 01-01-2004, 07:24 PM

Forgot to put this in my last post, but back in the 1800s or so they said trains could not go over 35mph because all the air would be sucked out and people would suffacate. Nothing is impossible

Steel · #24 01-01-2004, 10:45 PM

Quote:

Originally Posted by Bronco2

Forgot to put this in my last post, but back in the 1800s or so they said trains could not go over 35mph because all the air would be sucked out and people would suffacate. Nothing is impossible

yeah, but that was dumb people that didn't know shit about shit. The engineers and whatnot knew that trains could break 35 mph, they just needed a way to put the power to the wheels.

accent gsi · #25 01-02-2004, 09:19 AM

about your teacher theory...

its true!!!!!!;

but its not a real time travel, what we can do is to stop our "biological clock"; the higher speed we reach, the most "pause" we can put in our lifes. Its a thing that happens to astronauts and other hi-speed humas.

greetins

Steel · #26 01-02-2004, 03:59 PM

Astronauts will only experiance aobut a 2 second "time travel", so...

taranaki · #27 01-02-2004, 04:19 PM

Time travel is a falsehood.If it were possible to travel back in time,the very prescence of 'people from the future' would alter history.What has gone before cannot be erased,altered or improved.
What has yet to come does not yet exist,unless there is an infinite platform of chronology already laid out and we are merely one group of people living on it.Is it possible for a parallel civilisation to be using this planet ,but at a different point in time?Rather unlikely,Ithink.

Toksin · #28 01-02-2004, 04:41 PM

As we approach the speed of light, our mass increases infinitely, so we wouldn't be able to accelerate all the way to the speed of light. If we somehow managed to travel FTL (not using wormholes etc, let's call it "realspace") then in short distances we would arrive at our destination before we left. Over long distances that shouldn't be a problem. However, as you go faster, time dilates. Einstein theorised that if a ship left earth and travelled at relativistic speeds (near the speed of light) for say 3 years (what felt like 3 years to the ship's crew) several decades would pass on Earth, so when they returned they would be 3 years older, but everything else would be 75 years older or so. That could technically be classed as travelling into the future of sorts, but how would you get back? This concept was explored a little in Orson Scott Card's "Enders Game", where the Human fleets leave every few years heading towards an alien homeworld at relativistic speeds, but the newer ships would be faster so they all arrive at roughly the same time. The journey feels like a few months to the crew, but something like 20 or 30 years pass on Earth.

As for wormholes, they wouldn't literally make you travel faster than light, they would rip a hole in space-time. Say we view space-time as a piece of paper folded over, like into a U shape. Mark a point on either side, point A and B. To travel from point A to B at normal speeds would require you to follow the whole length of the paper around the curve of the U, and would take ages. However, a wormhole from A to B would simply go straight through the gap in the U-shape, cutting travel time down significantly, should space-time be curved as Lawrence Krauss suggests (The Physics of Star Trek). Now, imagine that one point is moving through time, while the other is stationary, ie, "roll" the paper so the points seem to pass eacother. Now, if the wormhole from point A stayed in the same place, wouldn't you technically be moving to a different point in time if you went through it, since the other end is moving through space and time.

To quote Zathras from Babylon 5: "We cannot run out of time. Time is infinite. You, are finite. Zathras, is finite. This, is wrong tool"

Oh no I've gone crosseyed

Steel · #29 01-02-2004, 04:57 PM

I LOVE Ender's Game. I gotta re-read that sometime.

Monte8s7s · #30 01-05-2004, 10:37 PM

I believe time travel is possible. We just cannot grasp the ideas yet. Example...go back about 2000 years and ask people do you think it would be possible to send little machines on mars to take pictures? I bet there response would def. be no. Im not a genius but I think there is more to the universe than what most of us think . Time is not how we think it is. The faster you get towards the speed of light the more it slows down, it is not a constant, and to go beyond that speed, something must happen. Also the theory behind wormholes is not really saying going in a staight line its more like curving space time , I know its too much to think about but it is really interesting. I suggest researchin it rather than just saying...no its never gonna be possible. "Think outside the box"

POST REPLY TO THIS THREAD