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Subject: StarGate - Possible or impossible?
fall out    10/7/2004 9:31:41 AM
Im sure most of you are well aware of the tv show Star Gate; i was just wondering what your thoughts are on the actual possibility of traveling through space like that?? Cheers, Fall Out :)
 
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Nanheyangrouchuan    RE:StarGate - Technical side of a StarGate   10/14/2004 5:48:26 PM
maybe it is not a question of brute energy applied to the device but something along the lines of finessing the physical rules of the universe.
 
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doggtag    RE:StarGate - finessing/seducing physics into cooperating   10/14/2004 6:29:55 PM
You bring up good points, Nanhey: we may not need to achieve miraculous technologies to make it happen. Consider that aircraft don't yet actually defy gravity per se, inasmuch as created a balance between thrust, lift, and drag to "circumvent" gravity by means of the Venturi Effect (for all intensive purposes, aircraft are actually "sucked" into the sky by the lower air pressures above the wings.) Perhaps we may, in the future, discover other methods of circumventing light speed, certain aspects of quantum physical laws, and other as-yet undiscovered physical legalities of the Cosmos. Skirting around the laws may give us the same result as defying them outright. .
 
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Warhammer    RE:StarGate - Technical side of a StarGate   10/15/2004 4:15:19 PM
Basically, that is how it will have to work out, unless we can harness a singularity for every opening of a wormhole. We just need to find what combination of energy, frequencies, materials, and perhaps even plain old chaos and luck to open up our pipelines to the future.
 
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Warhammer    RE:StarGate - Warhammer   10/18/2004 3:35:54 PM
I was thinking about something like, firing a super dense prjectile, or stream of energy through a ring. The stream/projectile might weaken spacetime as it violently passes, and then the ring powers up and pulls the rift wide open. Just a thought.
 
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fullamongo    RE:StarGate - Warhammer   10/20/2004 6:19:56 PM
2 points sprung to mind. scientist have proven in theory that the star trek warp travel (fold over the universe and 'break on through to the other side') system would work. however, it would require all the energy in the universe to do so. Has anyone here played Half-life? in that game we find a way a teleport our way to another world. what do we do? we colonise it, spanish style, and steal their resources (to fuel the next generation of SUV's i guess ;-))
 
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A Patriot    RE:Time travel   11/21/2004 9:32:11 PM
I'm pretty sure time travek is possible, but only time travelling into the future. Astronauts really do travel through time, by bilionths of seconds of course. Time is definitly a huge factor in determining whether or not there are other lifeforms other thann us (For me, I am 100% sure there is other life out there, intelligent or not!). Think about it, Time isn't something we just made up to make a schedule, it's actually somthing! Not matter, but it varies. So wouldn't that mean that if somewhere else in this universe there was a planet where by time travelled 10 x as fast or somthing, that the life on that planet would have had advanced 10x more. I could go on about some other intresting theories I have heard about life in our universe, but I have to go, I'll post some of them tomorow after I come back from my classes.
 
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Cocoonboy    RE:Time travel-Patriot   11/22/2004 12:16:51 AM
Imagine if the Romans had created the engine and so on ? Think about it, they had everything we have and then some. So what I'm thinking about is what do we have right here in the present that we don't even know could launch all of us into the future. I think a big problem with time is time itself. If we thought of time differently perhaps we would look at it differently. You know as well as I do that that there is an equation probably on a Coke or Pepsi that could solve the worlds problems......if only we re-arranged one word or something..
 
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A Patriot    RE:Time travel-Patriot   11/22/2004 3:12:08 PM
To help some of you understand why time travel is possible: So where do we start? Well let us start with one of the greatest triumphs of the human mind, the great theorem of Pythagoras, a true pillar of all mathematics and physics. The theorem, which is applicable to right angled triangles in flat Cartesian (Newtonian) space takes the form of: c^2 = a^2 + b^2 where a, b and c are the lengths of the sides of the triangle. Next we will jump straight to Einstein's theory of Relativity which states that neither time, length, or indeed mass remain constant additive quantities when approaching the speed of light c. Our simple ideas of time and space come from the fact the we are so used to living in a three dimensional universe. Einstein showed that this was simply not true and in fact all the "foundational" three laws of Newton have to be fudged by the Lorentz factor L_f = (1 - v^2/c^2)^-1/2 Elementary Guide to Relativity There are, however, certain quantities that do remain constant. These constants are related to four-dimensional quantities known as metric tensors. From this Einstein proved that space and time are two aspects of the same thing and that matter and energy are also two aspects of the same thing. From the second of these concepts we get the most famous equation in physics E = mc^2 Now since time and space are aspects of space-time and we wish to travel through time and not build atom bombs we will leave E=mc^2 for the moment. To illustrate this, look at the extension of Pythagorean theorem for the distance, d, between two points in space: d^2 = x^2 + y^2 + z^2 where x, y and z are the lengths, or more correctly the difference in the co-ordinates, in each of the three spatial directions. This distance remains constant for fixed displacements of the origin. In Einstein's relativity the same equation is modified to remain constant with respect to displacement (and rotation), but not with respect to motion. For a moving object, at least one of the lengths from which the distance, d, is calculated is contracted relative to a stationary observer. The equation now becomes: d^2 = x^2 + y^2 + z^2 (1-v^2/c^2)^1/2 and this implies that the distances all shrink as one moves faster, so does this mean there are no constant distances left in the universe? The answer is that there are because of Einstein's revolutionary concept of space-time where time is distance and distance is time! So now s^2 = x^2 + y^2 + z^2 - ct^2 and this new distance s (remember s stands for Space-time) does indeed remain constant for all who are in relative motion. This distance is said to be a Lorentz transformation invariant and has the same value for all inertial observers. Since the equation mixes time and space up we have to always think in terms of this new concept: space-time! A Practical Example of Time Travel What does this have to do with time travel? Imagine an imaginary journey to Andromeda, some 2.2 million light years away. For the time being ignore the problems of propulsion (like they do in all Sci-Fi films!). Firstly, lets assume a Newtonian Universe and we'll ignore the effects of gravity and friction (not much of this in space anyway). The first problem: how fast do we accelerate? Well, if we could accelerate at an infinite rate we could reach an infinite speed instantly and reach our destination in no time at all! Unfortunately, if we were to do so we would experience infinite acceleration forces and be crushed to an infinitesimally thin film instantly. Not much use. The gravitational field of the Earth of 1g (9.81 m/s per second) is however a comfortable acceleration to subject us to, so lets assume the acceleration of our spaceship will be 1g. So how long to Andromeda at 1g using Newton's theory? We will add the condition that we wish to stop when we get there, if only to turn around and come back. The best time we can make is achieved by accelerating for the first half of the journey and decelerating for the second. The total time for the trip can be calculated to be some 2,065 years. Rather a long time really. Consider the same journey in an Einsteinian Universe. We now have a limited maximum speed (the speed of light), which at 1g is reached in 30,000,000 seconds, or a little under 354 days. After we reach this speed, how much longer will it take to reach Andromeda? The answer is no time at all! For the distance to Andromeda will have shrunk to zero for the spacecraft. However to the people back on Earth a considerable length of time would pass: some 2.2 million years. OK so what's the catch ??? For practical reasons, such as having no way of navigating in an infinitely thin universe, we would stop just short of the speed of light at the halfway point and reverse engines to come to a halt at Andromeda. The entire trip would have taken a little less than 2 years at a comfortable 1g. The sa
 
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A Patriot    RE:Time travel-Patriot   11/22/2004 3:15:04 PM
Check this source out, very detailed, I used this website awhile ago for a prehistory class when we were discussing the possibility of travelling through space. http://freespace.virgin.net/steve.preston/Time.html
 
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A Patriot    RE:StarGate - Possible or impossible?   11/22/2004 3:27:53 PM
I will post again tomorow, I'm really busy. I like this thread, it's the most intresting one on here :)
 
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