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Time Travel

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LAN_403

Part Scavenger

Tue May 02 2006, 02:38AM

Registered Member #79 Joined: Thu Feb 09 2006, 11:35AM
Location: Arkansas
Posts: 673

I realize this is a touchy topic, so I'll try to be tasteful.

Is there anywhere I can go to find *real* scientific research on time travel/teleportation, decent theories and whatnot? I'd like to know what the experts think about it, whether it's possible or not, and what would be required to achieve it. Not just some guys in their basement with headbands proclaiming the headache they got was from a different dimension.

Try typing "time travel" into Google sometime, it's scary. Sites come rated in marijuana leaves.

I know we joke about it, but what if it's the next electricity? I'd personally like to know a little more about it. Please be serious enough and not get the thread locked.

Thanks.

Michael W.

Tue May 02 2006, 02:58AM

Registered Member #50 Joined: Thu Feb 09 2006, 04:07AM
Location: Vernon, B.C, Canada
Posts: 324

I've just read everything by Stephen Hawkings (although recently he has stated that time travel is impossible), Einstein etc. and just put together what I want to know, where I can believe with some confidence. In the society we live in we seem to be in scientific confusion making alot of things all heresay, the psuedoscience people formulate what they want until the big boys (scientists) prove what true and whats not.

Desmogod

Tue May 02 2006, 03:04AM

Registered Member #139 Joined: Sat Feb 11 2006, 11:01AM
Location: Perth, Western Australia
Posts: 358

I think the notion of time travel in the truest sense is a no goer to be honest. We won't be jumping into time machines and going off to hunt some brontosaurus, put it that way. I would say time travel in the Hollywood sense is impossible, this has been proven time and again by many theories. Mind you, they also said travelling at faster than sound was impossible too. However, it may still be possible to "travel" into the future by utilising general relativity in a special way.
Let's say you are in a spacecraft, orbiting a decent sized black hole. The spacecraft is not greatly affected by the gravity of the black hole.
Now lets say you enter a special shuttle craft and attach it to the main spaceship via a winch. you then get lowered to _just_ this side of the event horizon. Due to relativity etc etc, time will travel slower at the shuttlecraft than in relation to the mothership. Depending on gravitational forces etc, you could be in the shuttle for a matter of minutes before being winched back up. It could be many thousands of years later on the mother ship.
This depends on a few things.
1. We need to find a black hole
2. We have to last more than a few thousand years without killing ourselves.
3. We have to figure out how our puny bodies can withstand ludicrous gravitational shear forces without self destructing.

Michael W.

Tue May 02 2006, 03:18AM

Registered Member #50 Joined: Thu Feb 09 2006, 04:07AM
Location: Vernon, B.C, Canada
Posts: 324

With a Stabilized black hole (stopped from pinching to infinite density), A large nutron star could be placed near the singularity or vice versa. As the astronaut enters the singularity time is slowed for him due to the intense gravity imposed by the star. Time continues quicker than he experiences, there for when he exits the singularity at a different point in space he will technically (for him) be in the future. Every time a person flies in a JetLiner they technially travel into the future relative to the earth as we are traveling at a faster speed (920km an Hr, 8 Hours, You add 10 nanoseconds to your life relative to the earth.)

Part Scavenger

Tue May 02 2006, 03:29AM

Registered Member #79 Joined: Thu Feb 09 2006, 11:35AM
Location: Arkansas
Posts: 673

I was thinking more along the lines of your average Steve Urkel time machine (that's right, I know you watched it too

), so I guess that's out. What about teleporting? or "pausing" time?

Michael W.

Tue May 02 2006, 03:35AM

Registered Member #50 Joined: Thu Feb 09 2006, 04:07AM
Location: Vernon, B.C, Canada
Posts: 324

Any kind of "portable" time machine is not totally but most likely out of the question. The question now is how too manipulate a black hole many times the size of our own sun....

...

Tue May 02 2006, 04:06AM

Registered Member #56 Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445

I was under the impression that time travel already worked, all you needed to do was get on a plane

I think my primary source of time travel info has come from NOVA (or something on PBS that was explaining how moving at a high speed causes time to go slower for you, up til you are going light speed where it stops, then faster than light speed it reverses. So if you go on a plane for a few hours you go a few pS forward in time... Not much, but technically...

Now going back in time is a little trickier, with because of the little thing that you can't go faster than the speed of light... And even if you do find a way time stops when you at going at the speed of light so you can't get back.

So to get around this they decided to use a wormhole to rick the universe into thinking that you went faster than the speed of light, (just like you trick you coach by cutting the corners on a track).

But that brings up the little problem that wormholes are tricky to create to say the least. I remember them saying that we needed a force equivalent to the gravity of Jupiter to open up a wormhole big enough to do anything useful...

More recently I watched a show about some guy that was using lasers to bend the universe (instead of cutting the corners of the track he made the track smaller) using some lasers...

Since I watched these many years ago I guess we are not making much progress

Michael W.

Tue May 02 2006, 04:17AM

Registered Member #50 Joined: Thu Feb 09 2006, 04:07AM
Location: Vernon, B.C, Canada
Posts: 324

Even If a worm hole is opened and held stable, the smallest disturbance, like you entering, will cause it to collpase to infinite density, trapping you inside....converting you to pure energy

Bjørn

Tue May 02 2006, 04:28AM

Registered Member #27 Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058

Time travel belongs on the General Science and Electronics forum. In the cases it does not belong there it would fall under pseudoscience and strictly forbidden.

This thread does not have the qualities needed for it to be moved intact so I close it. You are free to open a new thread on the correct forum where all claims like "moving faster than the speed of light reverses time" are documented by others than Marvel Comics.

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