At 5/3/09 06:39 AM, Depredation wrote: I think scientists are doubtful that you can go back in time using any sort of machine, energy or device, time is a river, you can't go against the current.

Naturally. But it might as well be possible. With all the paradoxes.

However, you can swim with the current and go forwards in time, or rather, speed it up. It's already been done, albeit on a small scale, with astronauts coming back older than they would have been on earth.

Time slows down the more you accelerate close to the speed of light. We're all basically standing still so time goes as fast as it can. Astronauts aging or not isn't due to the time flow changing though.

However, with parallel universes, like glaiel said you could just jump out of your river into a completely different one, go back upstream and jump back into ours.

Yeah but where does the universe come from? Does the multiverse begin simulating another rolled-back universe for you to enter to avoid the paradox so your original one can go on without you?

At 5/3/09 07:05 AM, GustTheASGuy wrote: Time slows down the more you accelerate close to the speed of light. We're all basically standing still so time goes as fast as it can. Astronauts aging or not isn't due to the time flow changing though.

You're over (or under :/ ) complicating this. Essentially, all of this extends from the principle that it's impossible to tell whether your reference frame is at rest or moving - all laws of nature hold true in all reference frames. The speed of light in a vacuum is therefore constant in all reference frames.

This presents an essential problem - if you're standing still, and your mate is running at a speed of half the speed of light (just for the sake of making this example a little simpler), or 0.5c, you will both measure exactly the same speed for light, contrary to what we expect from classical mechanics. Since the speed of light is constant in each frame, the things we determine it by, i.e. time and distance, must be relative. This has been experimentally verified.

The effect of gravity is interesting too, since a uniform gravitational field is indistinguishable from constant acceleration. Relativity also has lots of cool side effects, e.g. magnetism.

At 5/3/09 07:19 AM, Paranoia wrote: Relativity also has lots of cool side effects, e.g. magnetism.

Agree with you up to there, what are you on about? :P

At 5/3/09 08:33 AM, dELtaluca wrote:

At 5/3/09 07:19 AM, Paranoia wrote: Relativity also has lots of cool side effects, e.g. magnetism.

Agree with you up to there, what are you on about? :P

I could be out of date on this, but I think magnetism is a relatavistic by-product of a moving charge, brought about by distortions in the electric field or something like that. Anyway, you experience a magnetic field only if you and a charge are moving relative to each other :)

At 5/2/09 10:21 PM, fluffkomix wrote:

At 5/2/09 10:19 PM, Magical-Zorse wrote:

At 5/2/09 10:18 PM, fluffkomix wrote: you remember hwo long my hair used to be? no? okay well look at this

you sexy devil

3

zorsey how is it that you are somehow able to gravitate towards every single pic i take of myself on this website?

I'm drawn to your sexiness

And along came Kirk...

At 5/3/09 12:59 PM, Paranoia wrote: And along came Kirk...

Well who else was gonna do it, Kayn? NO CHANCE LMFAO!

At 5/3/09 03:41 AM, fluffkomix wrote:

At 5/3/09 03:20 AM, Duchednier wrote: In the first pic, you look almost Asian with your big eyes :P
In the second pic, much more-less asian, im not saying its a bad thing XD just throwin that out there

well then its a good thing my last name is Nick LEONG, eh?

half chinese on my dad's side.

Haha, ok well that makes sense i wasn't sure, cuz in the second pic it doesn't show at all XD

At 5/3/09 01:10 PM, Kirk-Cocaine wrote:

At 5/3/09 12:59 PM, Paranoia wrote: And along came Kirk...

Well who else was gonna do it, Kayn? NO CHANCE LMFAO!

LOL Bitches got pwned!

At 5/3/09 01:23 PM, Duchednier wrote: LOL Bitches got pwned!

You spelt owned wrong :D

At 5/3/09 01:32 PM, Saza wrote:

At 5/3/09 01:23 PM, Duchednier wrote: LOL Bitches got pwned!

You spelt owned wrong :D

www.purepwnage.com

At 5/3/09 04:41 AM, Luis wrote:
You kinda look like the backstreet boy.. the gay one.

Lance or whatever

well does that turn you on luis?

At 5/3/09 04:21 AM, GustTheASGuy wrote:

At 5/3/09 04:04 AM, liaaaam wrote: If you went back in time and did something specific to change the future, that thing will have changed and that alternate ending you created will have happened and you'd never have gone back in time to change it in the first place.. it's an infinite paradox. Time travel isn't possible >=/

A paradox doesn't prove that it's not possible. It might be possible to reverse the direction of time, or to create a timespace warp across time.

Wait, what? reverse the direction of time? How do you know time has direction?

Many people talk of time as the flow of a river, let's use that as an example. If the river flows from the big bang, to the destruction of the universe, we would accept it as a normal flow of time. However, what if the river flows from destruction to big bang? Would the universe be any different?

If it's like a flash movie. frame 0 is big bang, and frame 100 is the end of the world. If you reverse the movie and play from 100 to 0, in each frame the characters will still only have their memories from the frames after them, and not know what happened in the frames before them. Nothing would have changed at all. If you reverse time you also reverse cause and effect, and therefore nothing visible in the universe changes. I have a fascinating book called "The end of time" by Julian Barbour, who is actually an accomplished quantum physicist, unlike the other nuts who say time is an illusion. He basically discusses the quantization of time: just like we quantized light and thought of it as tiny separate particles rather than a wave, he talks of time as many instants, rather than the big flow of a river, and then he shows how it means that time doesn't actually exists (but that's complicated things that I can't explain, let alone on a forum)

And by the way, wouldn't space warping violate our knowledge from general relativity? The only way to send something to the past is make it move faster than the speed of light, or create some sort of ... loophole.

At 5/3/09 08:33 AM, dELtaluca wrote:

At 5/3/09 07:19 AM, Paranoia wrote: Relativity also has lots of cool side effects, e.g. magnetism.

Agree with you up to there, what are you on about? :P

Relativistic electromagnetism

At 5/3/09 03:02 PM, Toast wrote:

If it's like a flash movie. frame 0 is big bang, and frame 100 is the end of the world.

I SMELL A COLLAB!

Hey Toast, I like your new sig.

At 5/3/09 03:02 PM, Toast wrote: Wait, what? reverse the direction of time? How do you know time has direction?

It consistently moves the same way, thus it has a direction.

And by the way, wouldn't space warping violate our knowledge from general relativity? The only way to send something to the past is make it move faster than the speed of light, or create some sort of ... loophole.

You don't need to move faster than light to reverse time. A body's relative motion in spacetime is a four-vector (t,x,y,z) whose magnitude is equal to c. The higher the magnitude x,y,z is the lower t has to be. But t doesn't have to be positive. Although, technically, yeah, you'd have to reach the speed of light (which is impossible) where t is zero and then try to knock it the other way or something. Yeeeah.

Wormholes it is.

At 5/3/09 03:31 PM, GustTheASGuy wrote:

At 5/3/09 03:02 PM, Toast wrote: Wait, what? reverse the direction of time? How do you know time has direction?

It consistently moves the same way, thus it has a direction.

There is nothing you can do to prove that. it could very well be that the direction of time is constantly changing, or that the universe lasts 1 second, or that time doesn't exist at all. If there was only one instant in the universe, we wouldn't be able to tell the difference between that universe and a universe that lasts billions of years, because we are only conscient in instants, not durations. Past is memory, future is unknown, present is instant awareness.

The sun goes to sleep at night :)

At 5/3/09 03:46 PM, Toast wrote:

There is nothing you can do to prove that. it could very well be that the direction of time is constantly changing, or that the universe lasts 1 second, or that time doesn't exist at all. If there was only one instant in the universe, we wouldn't be able to tell the difference between that universe and a universe that lasts billions of years, because we are only conscient in instants, not durations. Past is memory, future is unknown, present is instant awareness.

This topic has gone on longer than that time we were discussing the economic politics of the world >_<

Not complaining though actually, this is neat stuff i like reading everyone's opinions :D

At 5/3/09 04:28 PM, Saza wrote: The sun goes to sleep at night :)

That right there is the most accurate and revolutionary scientific statement of this century.

Anyone seen any good movies lately? Ive been watching a lot of films recently and im finding it increasingly harder to find things to watch.

I watched Big the other day which was brilliant! Ive been loving the Studio Ghibli films too but ive ran their back catalogue dry...

At 5/3/09 05:13 PM, J1mp wrote: Anyone seen any good movies lately? Ive been watching a lot of films recently and im finding it increasingly harder to find things to watch.

I watched Big the other day which was brilliant! Ive been loving the Studio Ghibli films too but ive ran their back catalogue dry...

Not a film watcher really unless i'm told it's really good or i'm dragged along to it.

More of a TV guy myself - Lost, Heroes, 24 ;)

At 5/3/09 05:14 PM, Saza wrote:

At 5/3/09 05:13 PM, J1mp wrote: Anyone seen any good movies lately? Ive been watching a lot of films recently and im finding it increasingly harder to find things to watch.

I watched Big the other day which was brilliant! Ive been loving the Studio Ghibli films too but ive ran their back catalogue dry...

Not a film watcher really unless i'm told it's really good or i'm dragged along to it.

More of a TV guy myself - Lost, Heroes, 24 ;)

i love heroes and chuck, but i <3 movies as well.

I saw Xmen origins and thought they rushed the fuck out of it and therefore wasn't too good, but it inspired me to watch the other real xmen movies so i've been doing that as i work on flash lately.

^_^ fun times

At 5/3/09 05:46 PM, Duchednier wrote: I saw Xmen origins and thought they rushed the fuck out of it and therefore wasn't too good, but it inspired me to watch the other real xmen movies so i've been doing that as i work on flash lately.

^_^ fun times

Xmen 2 was on ITV3 yesterday, pretty decent - was kinda half watching it though.

At 5/2/09 11:12 PM, K-Guare wrote: Slap chop rap...
Think we've got a winner. :]

This one's my favorite.

This one is much better. :3

I am a big movie fan myself, my personal favourites are Brazil and Hard Candy, probably Monday too, I love that movie. Now when it comes to series, the only ones I watch are 24 and maybe House MD ;D

At 5/3/09 07:06 PM, MichaelHurst wrote:

At 5/2/09 11:12 PM, K-Guare wrote: Slap chop rap...
Think we've got a winner. :]

This one's my favorite.

This one is much better. :3

Ya that's the one I posted that he was referring to

At 5/3/09 07:53 PM, Zyphonee wrote: I am a big movie fan myself, my personal favourites are Brazil and Hard Candy, probably Monday too, I love that movie. Now when it comes to series, the only ones I watch are 24 and maybe House MD ;D

Sweet up! I'm working on Exile4 right now and i've run out of Xmen movies to watch, so now i've moved onto Miyazaki movies (which my reserve is full, but lol i'll post tomorrow saying oh shit im out)

Wooo!

Slap chop!
Watch this, your gonna love my nuts

At 5/3/09 03:02 PM, Toast wrote: Wait, what? reverse the direction of time? How do you know time has direction?

I have to ask my physics teacher exactly what it was, but I just remember him making some side-comment about something like this. I don't remember exactly what the comment was but there are two possibilities I seem to remember.

It was that physics had found something that either was "changing" independently of time, or it was moving in basically it's own direction of time, so like, while we may be going a certain direction in time, it could be going in what we see as reverse. With my mere honors level in physics and recalling my memory from back five months, it's hard to remember exactly, but I'll ask him tomorrow.

The only thing I can think of is light. You always see it moving at the same speed relative to you no matter how fast the "river of time" flows (aka - how fast you're going (general relativity))