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dimensionaltraveler
Pileated woodpecker
Joined: Nov 30, 2006
Posts: 194
Location: Moonbase Alpha
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 Posted: Tue Jan 09, 2007 9:51 pm Post subject: |
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| bheid wrote: | | dimensionaltraveler wrote: |
If you were traveling faster than the speed of light you will be on the same time line because time dilation would not be occurung. |
not true; any form of FTL travel violates casuality.
I'll be damned if i know why, but here's a file to show you. (hope you have better luck than me at understanding.)
http://www.textfiles.com/science/relative.ftl
(you'll need to set the text only option on your internet explorer to courier new to understand the ASCII diagrams) |
If you traveled through a wormhole you would be traveling faster than light. Special relativity only applies locally. Wormholes allow superluminal (faster-than-light) travel by ensuring that the speed of light is not exceeded locally at any time. While traveling through a wormhole, subluminal (slower-than-light) speeds are used. If two points are connected by a wormhole, the time taken to traverse it would be less than the time it would take a light beam to make the journey if it took a path through the space outside the wormhole. However, a light beam traveling through the wormhole would always beat the traveler. As an analogy, running around to the opposite side of a mountain at maximum speed may take longer than walking through a tunnel crossing it. You can walk slowly while reaching your destination more quickly because the length of your path is shorter. Its called a Morris-Thorne wormhole. You are right that currently FTL does violate casuality but out understanding of modern physics is still in its infancy. In 100 years FTL travel will be common as we break the sound barrier today.
Diagram of a Wormhole
Wormhole in 2D space.
Diagram of an spaceship traveling inside a Wormhole
http://www.npl.washington.edu/AV/altvw69.html
http://members.tripod.com/QuantumFoam/q-foam.html
http://en.wikipedia.org/wiki/Wormhole
http://www.physics.hku.hk/~tboyce/sf/topics/wormhole/wormhole.html
http://www.usd.edu/phys/courses/phys300/gallery2/dave/dave.htm
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Suicune1000
Tufted Titmouse
Joined: Jan 01, 2007
Posts: 30
Location: Queensland, Australia (Earth, Solar System)
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| Posted: Sat Jan 13, 2007 11:07 am Post subject: |
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This may be completely irrelevant and entirely incorrect, but would it be possible to harness Zero Point energy (Vacuum energy) to assist in achieving FTL speed, or at least near FTL speed?
On the other hand, CeallachSolomon came up with a rather valid point that set me thinking. Now, this is just speculation I've developed (that I don't even agree with myself, but I believe it could be potentially valid). What if in order to achieve time travel one would be required to become a 'non-entity' of sorts? You would therefor become a being forced to practice non-interference, eliminating the risk of paradoxes. You'd also then have the potantial to have no mass, which would minimize the problems involved with reaching FTL speed, would it not? Correct me if I'm wrong, but it's rather late(early in the morning) here and I haven't had caffeine in any form for three days so my brain functioning isn't exactly up to par.
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Why can't we live in a world where even chickens can cross the road without having their motives questioned? |
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dimensionaltraveler
Pileated woodpecker
Joined: Nov 30, 2006
Posts: 194
Location: Moonbase Alpha
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| Posted: Sat Jan 13, 2007 7:28 pm Post subject: |
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| Suicune1000 wrote: | | This may be completely irrelevant and entirely incorrect, but would it be possible to harness Zero Point energy (Vacuum energy) to assist in achieving FTL speed, or at least near FTL speed?. |
Zero Point energy is a scientifically proven fact as proven in the Casimir effect. However, humanity needs to design a workable "free energy" device. Your correct, that Zero Point energy could be used to achieving FTL travel and maybe time travel. There are unverified anecdotes of inventors or researchers detecting time anomalies. Daniel Greenberger and Karl Svozil has given a model for time travelk without paradoxes but they seem to be in direct contradiction of Einstein,Thorne,and Hawking over paradoxes. Maybe Greenberger and Svozil are correct. We would have to build a time machine to find out who is right.
http://www.daviddarling.info/encyclopedia/C/Casimir.html
http://en.wikipedia.org/wiki/Casimir_effect
http://www.padrak.com/ine/ZPES
http://en.wikipedia.org/wiki/Time_travelCIAM.html
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Do your damnedest in an ostentatious manner all the time.
General George Patton Jr
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Atomika
Banned
Joined: Jan 10, 2007
Posts: 620
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| Posted: Sat Jan 13, 2007 8:32 pm Post subject: |
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| dimensionaltraveler wrote: | | Suicune1000 wrote: | | This may be completely irrelevant and entirely incorrect, but would it be possible to harness Zero Point energy (Vacuum energy) to assist in achieving FTL speed, or at least near FTL speed?. |
Zero Point energy is a scientifically proven fact as proven in the Casimir effect. However, humanity needs to design a workable "free energy" device. Your correct, that Zero Point energy could be used to achieving FTL travel and maybe time travel. There are unverified anecdotes of inventors or researchers detecting time anomalies. Daniel Greenberger and Karl Svozil has given a model for time travelk without paradoxes but they seem to be in direct contradiction of Einstein,Thorne,and Hawking over paradoxes. Maybe Greenberger and Svozil are correct. We would have to build a time machine to find out who is right.
http://www.daviddarling.info/encyclopedia/C/Casimir.html
http://en.wikipedia.org/wiki/Casimir_effect
http://www.padrak.com/ine/ZPES
http://en.wikipedia.org/wiki/Time_travelCIAM.html |
I think one of the main concerns with utilizing zero-point energy is the fact that zero-point energy means that is the lowest possible energy state a particle could theoretically obtain, as defined by the Quantum Theory. To harness zero-point energy would make a particle go to an even lower energy state, and scientists are debating whether or not it can be done. |
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RTSgamerFTW
4th Espada
Joined: Sep 28, 2006
Posts: 4793
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| Posted: Sat Jan 13, 2007 8:35 pm Post subject: |
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I wish time travel was possible NOW,so i could change MY past...
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Atomika
Banned
Joined: Jan 10, 2007
Posts: 620
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| Posted: Sat Jan 13, 2007 9:19 pm Post subject: |
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| Unknown wrote: | | I wish time travel was possible NOW,so i could change MY past... |
Don't give your hopes up, for there are plenty of theories out there that allow time travel but don't allow one to change their past... |
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ahayes
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Joined: Dec 03, 2006
Posts: 9746
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| Posted: Sun Jan 14, 2007 1:05 am Post subject: |
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| dimensionaltraveler wrote: |
Diagram of an spaceship traveling inside a Wormhole
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Actually that's an illustratioin of how Alcubierre (warp) drive works.
http://en.wikipedia.org/wiki/Alcubierre_drive |
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ahayes
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| Posted: Sun Jan 14, 2007 1:06 am Post subject: |
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| From what I understand time travel is possible but the time machine would have to be running during the moment you want to travel to... not very useful if you want to order pancakes during the Renaissance. |
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Atomika
Banned
Joined: Jan 10, 2007
Posts: 620
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| Posted: Sun Jan 14, 2007 10:15 am Post subject: |
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| Actually, there is one form of time travel that is possible. According to General Relativity, if your speed is at near the speed of light, you would age much more slowly. Therefore, you would be sort of be traveling into the future. I think Kip Thorne has suggested that in order to travel into the past, you would have to build a wormhole with one end at a spacecraft and have that speed up to near light speeds. With this method you could at least travel decades into the past, but unfortunently you would not be able to travel back into the Middle Ages or something. |
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Alternative
Ex-Member
Joined: Jun 30, 2006
Posts: 5610
Location: Gone To Live Life
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| Posted: Sun Jan 14, 2007 11:09 am Post subject: |
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They say time travel will be possible in 250,000 years time.  |
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dimensionaltraveler
Pileated woodpecker
Joined: Nov 30, 2006
Posts: 194
Location: Moonbase Alpha
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| Posted: Fri Jan 19, 2007 6:02 pm Post subject: |
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Traversable wormholes are a special kind of Lorentzian wormholes which would allow a human to travel from one side of the wormhole to the other. Serguei Krasnikov tossed the term spacetime shortcut as a more general term for (traversable) wormholes and propulsion systems like the Alcubierre drive and the Krasnikov tube to indicate hyperfast interstellar travel. |
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