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daba
Stranger


Registered: 12/30/02
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Is a time machine possible?
#2131314 - 11/23/03 09:23 PM (20 years, 2 months ago) |
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A question posed to us from the days of our childhood. Nonetheless, always lingering in the back of our minds. Is this possible? Why or why not?
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z@z.com
Libertarian
Registered: 10/13/02
Posts: 2,876
Loc: ATL
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Re: Is a time machine possible? [Re: daba]
#2131352 - 11/23/03 09:44 PM (20 years, 2 months ago) |
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No.
-------------------- "Of all tyrannies, a tyranny exercised for the good of its victims may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated; but those who torment us for our own good will torment us without end, for they do so with the approval of their own conscience." - C.S. Lewis "I would rather be exposed to the inconveniencies attending too much liberty than to those attending too small a degree of it." - Thomas Jefferson
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daussaulit
Forgetful

Registered: 08/06/02
Posts: 2,894
Loc: Earth
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Re: Is a time machine possible? [Re: daba]
#2131478 - 11/23/03 11:09 PM (20 years, 2 months ago) |
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Well what do you mean by a time machine specifically? I guess a spaceship that could travel nearly the speed of light could be considered a time machine. There is the Twin Paradox. So lets say you get into the ship, travel at 3/5C for 8 years. You will have lived 8 years, while earth would have gone through 10 years. I guess that technically would be travelling 2 years into the future.
As for a time machine like in Back to the Future, I'm going to have to say no. You can't travel back before the time machine was built. And you can't travel forward in time because I don't believe in destiny and nothing is preset.
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T0aD
Stranger

Registered: 06/18/02
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Re: Is a time machine possible? [Re: daussaulit]
#2131721 - 11/24/03 02:58 AM (20 years, 2 months ago) |
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my science teacher who knows alot said thats not possible but thats not the end of it :]
-------------------- Cuba Libre
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Demiurge
creator ofworlds

Registered: 04/11/03
Posts: 693
Loc: Florida
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Re: Is a time machine possible? [Re: T0aD]
#2131737 - 11/24/03 03:16 AM (20 years, 2 months ago) |
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There are TOEs (theorys of everything) in modern physics that allow for wormholes that would tie together different parts of space/time. This could, in theory, allow a person or machine to travel from one point in time to another via these tears in the fabric of the universe. However, building a machine that could actually accomplish this is another story altogether as it would have to be able to withstand forces of gravity comparable to those of a black hole, as well as overcome many other physical and even philosophical impossiblilties. So for all practical purposes, no. And it is only an untested theory anyway.
-------------------- Just another animal embeded in a technological coral reef extruded psychic objects...
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Seuss
Error: divide byzero


Registered: 04/27/01
Posts: 23,480
Loc: Caribbean
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Re: Is a time machine possible? [Re: Demiurge]
#2131801 - 11/24/03 04:52 AM (20 years, 2 months ago) |
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> my science teacher who knows alot said thats not possible but thats not the end of it :] You science teacher was wrong to present a hypothesis as fact... Good eye cathing the mistake. > would have to be able to withstand forces of gravity comparable to those of a black hole Recent computer models of certain black holes indicate that there are areas of low gravity which might be possible to survive within. Of course, computer models aren't 100% accurate...
-------------------- Just another spore in the wind.
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bigfatdork
Now I Have Teeth

Registered: 10/19/03
Posts: 1,310
Loc: North PoLL
Last seen: 17 years, 10 months
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Re: Is a time machine possible? [Re: Seuss]
#2132004 - 11/24/03 08:46 AM (20 years, 2 months ago) |
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-------------------- "But it was alright, he had won the battle against himself, He Loved Big Brother"
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trendal
J♠


Registered: 04/17/01
Posts: 20,815
Loc: Ontario, Canada
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Re: Is a time machine possible? [Re: daba]
#2133759 - 11/24/03 10:36 PM (20 years, 2 months ago) |
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Well, modern physics doesn't exactly rule out the possibility of time travel...but it remains that: only a possibility. In all likelyhood the energies required are far beyond anything human beings will ever achieve.
I do not think time travel will ever be discovered by humans, or at least not as long as our consciousness is structured the way it is with respect to time.
Evidence? Well do you see any time travellers here? If time travel is invented sometime in the future, it stands to reason that someone, in all the future, would come back to a time before now. It also stands to reason that eventually someone would slip up and we would learn of time travel. We haven't
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Once, men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them.
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Seuss
Error: divide byzero


Registered: 04/27/01
Posts: 23,480
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Re: Is a time machine possible? [Re: trendal]
#2134263 - 11/25/03 04:37 AM (20 years, 2 months ago) |
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> If time travel is invented sometime in the future, it stands to reason that someone, in all the future, would come back to a time before now.
One of the interesting theories of time travel that I have read states that time travel can only occur back as far as the invention of the time machine.
The infinite parallel universes theory along with time travel would indicate that the likelyhood of a timetraveler ending up in your timeline would be very small.
-------------------- Just another spore in the wind.
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bigfatdork
Now I Have Teeth

Registered: 10/19/03
Posts: 1,310
Loc: North PoLL
Last seen: 17 years, 10 months
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Re: Is a time machine possible? [Re: Seuss]
#2134400 - 11/25/03 07:47 AM (20 years, 2 months ago) |
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How to Build a Time Machine It wouldn't be easy, but it might be possible By Paul Davies http://www.sciam.com/article.cfm?articleID=0004226A-F77D-1D4A-90FB809EC5880000&catID=2
According to current physical theory, is it possible for a human being to travel through time? Cassandra Kelly Kanata, Ontario, Canada http://www.sciam.com/askexpert_question....2D7&catID=3
-------------------- "But it was alright, he had won the battle against himself, He Loved Big Brother"
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energy_ball_within
All thatis....Our mind
Registered: 10/27/03
Posts: 74
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Re: Is a time machine possible? [Re: bigfatdork]
#2134448 - 11/25/03 08:33 AM (20 years, 2 months ago) |
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the concept of time is based around nature and this planet aswell as the universe, but time itself is man made. how do you consider you will go back in time or forward in time? i think its possible, but with the help of certain substances. i have traveled to different realms of worlds i never imagined before on lsd, but thats not necessarily time travel as it is mind expansion into the unknown.
i dont think no object is gonna rocket you from this time to the next.
screw the flux capacitor id rather have one of those hover skateboards!
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bigfatdork
Now I Have Teeth

Registered: 10/19/03
Posts: 1,310
Loc: North PoLL
Last seen: 17 years, 10 months
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Quote:
energy_ball_within said: time itself is man made.
Einstein kinda disproved that, but I'm all for journeys of the mind!
-------------------- "But it was alright, he had won the battle against himself, He Loved Big Brother"
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EvilGir
Im the on coming storm

Registered: 11/26/01
Posts: 1,301
Loc: Planet Irk
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Re: Is a time machine possible? [Re: bigfatdork]
#2137071 - 11/26/03 08:08 AM (20 years, 2 months ago) |
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Well time is more of a place than a thing, so just imagine traveling from place X to place Y. This could just as easily be going from 1pm to 3pm, it just working out how to go back. But even if you did have a time machine you would probably not only travel through time but also into a diffrent universe. As there is more than just x,y,Z and T time co-ordinates, there is probably r,e,w,y,u,i,j,h,b,v,s, as well.
-------------------- Fighting the man the best way I can.
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Le_Canard
The Duk Abides

Registered: 05/16/03
Posts: 94,392
Loc: Earthfarm 1
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Re: Is a time machine possible? [Re: EvilGir]
#2139545 - 11/27/03 02:14 AM (20 years, 2 months ago) |
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I don't know...it seems to me that time travel would involve "rewinding" all the Entropy of the entire universe, and would require unimaginable power. Just my .02!
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Stymee
From here to reality.


Registered: 03/31/02
Posts: 671
Loc: Seattle, WA
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Re: Is a time machine possible? [Re: daba]
#2143987 - 11/29/03 09:19 AM (20 years, 2 months ago) |
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"Time travel might be possible, but if that's the case why haven't we been overrun by tourists from the future?"
- Stephen Hawking
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Hefex78

Registered: 05/11/03
Posts: 251
Last seen: 4 years, 9 months
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*DELETED* [Re: Stymee]
#2148558 - 12/01/03 03:31 AM (20 years, 2 months ago) |
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Post deleted. Reason for deletion: Confidential.
Edited by Wa7sum (10/03/07 08:19 AM)
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Hefex78

Registered: 05/11/03
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Post deleted. Reason for deletion: Confidential.
Edited by Wa7sum (10/03/07 08:18 AM)
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gordonliu
Stranger

Registered: 03/12/03
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Re: Is a time machine possible? [Re: Hefex78]
#2150597 - 12/01/03 08:19 PM (20 years, 2 months ago) |
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time travel is possible, one needs a way to create a vast area of space with negative energy density, a way to increase the dilation of a wormhole of the quantum foam background and keep it open, and a vessel with these same abilities. then a person can travel vast distances in a period of time that would be equivalent to ftl if moving linearly. also, cp and t symmetry allow for time travel on the microscopic scale, which allows for the possiblity of time travel, however leaving open the possibility that it would take impossibly large amounts of energy to produce such an effect on a macroscopic scale
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gordonliu
Stranger

Registered: 03/12/03
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Re: Is a time machine possible? [Re: gordonliu]
#2150610 - 12/01/03 08:24 PM (20 years, 2 months ago) |
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time loops cause a problem however, in a universe or area of the universe with negative energy density, one might find themselves attemtping time travel using the cp and t symmetry of particle pairs but find themselves on an infinte time loop. this would pose a problem. FTL data transmission may be possible in some way. if the two members of a virtual particle pair, for example the elctron pair in a orbit, were seperated, and one of the two's spin was changed, the other member of the pair would immediately change to fulfill the pauli exclusion principle, no matter how far appart the two are. If one were say in alpha centauri and the other in california, it would be instantaneous.
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Trippy Hippy
The great whitehunter
Registered: 01/03/03
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Re: Is a time machine possible? [Re: gordonliu]
#2150637 - 12/01/03 08:40 PM (20 years, 2 months ago) |
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Thats incredibly hard to understand....cliff notes?!
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