I know Mulletron. What I want to know is exactly how Dr White theory deals with superluminal speeds, which most physicists say leads to time-travel to the past and all the paradoxes that surface from that.According to the video I showed from Dr Davis, superluminal speeds WITHOUT time-travel to the past are possible, if the light cone is tilted from 0 to 90 degrees only...I think this question is related to spaceflight applications exactly because time travel IS an issue at relativistic velocities (to the future) and superluminal velocities (to the past, but not according to Dr Davis)This question is probably more related to the spaceflight applications of a warp drive than the pure theoretical issues of how EM and Warp Drives work on quantum level, since the first is a result of spaceflight application while the second (which is being discussed in this thread) is not.
well, my guess is that CTCs are impossible and any superluminal travel (including warp drives) are impossible unless they somehow avoid travelling to the past. (I really hate the notion of timetravel to the past, although science is not based on one's preferences)In other words, I guess the universe is probably consistent in a way that the bending of space-time geometry is impossible if it involves time travel to the past, unless you someway engineer this bending of space-time geometry in someway similar to what I understand Dr Eric Davis talked in the video above...@LeftField: as far as I understand, having already questioned physicists I know about it, travelling to the past if you go FTL is independent of the ship not moving inside it´s own space-time (warp drive or wormholes) does not means you WILL travel back in time, but also means nothing stops you from doing so, causing all sort of causality violations.
...Seems a bit premature to be worried about these issues, when we don't even have a proven and accepted theory of how the devices EagleWorks are researching will work. So from my perspective I would have to say these concerns do not matter, because at this point in the research we "don't know what we don't know". Nature could have really simple solutions for all these concerns, but in the best case we have a device that seems to show that we can manipulate the vacuum into changing the length of the path light travels. We have no clue if the effect we are seeing is actually what we think it is, until further experiments are done. So the real question for me is, other than re running the test under vacuum. What other tests can we run to further enhance our understanding of what is going on.
...QUESTION 6: Has NASA Eagleworks addressed the issue with air refraction raised in this paper by Lee and Cleaver from Baylor University?:http://arxiv.org/ftp/arxiv/papers/1407/1407.7772.pdfIn particular, has NASA Eagleworks assessed the likelihood of the path-length-change measurements being the result of transient air heating ?See Dr. White's preliminary assessment of that issue in the attached slide. Ultimately though we will be running the warp-field resonant cavity with a vacuum contained in its active volume to get rid of all possibilities of air heating problems.Best, Paul M.
Quote from: aceshigh on 04/20/2015 02:43 amI know Mulletron. What I want to know is exactly how Dr White theory deals with superluminal speeds, which most physicists say leads to time-travel to the past and all the paradoxes that surface from that.According to the video I showed from Dr Davis, superluminal speeds WITHOUT time-travel to the past are possible, if the light cone is tilted from 0 to 90 degrees only...I think this question is related to spaceflight applications exactly because time travel IS an issue at relativistic velocities (to the future) and superluminal velocities (to the past, but not according to Dr Davis)This question is probably more related to the spaceflight applications of a warp drive than the pure theoretical issues of how EM and Warp Drives work on quantum level, since the first is a result of spaceflight application while the second (which is being discussed in this thread) is not.Don't forget that the ship is not really moving at relativistic speeds: space is. Consequently, you could take a trip to Alpha Centauri in 2 days (or less with more power... who knows?), turn your ship around and observe the Earth as it was four years ago (as light has taken four years to get there - slow coach!). You could then observe Alpha Centauri as it is "now", and how people on the Earth will see it in four years.With this type of technology, it would be possible to predict when locally past events are going to be observable from the point of view of the Earth (or any other point that the light from such events had not yet reached). For example, a ship 1 light-day out from the Earth in the right place could witness a supernova before the Earth does and then be able to return to the Earth almost instantly and tell astronomers about the incoming light wave so that they could prepare to observe it.Proviso: I am not an expert in time travel and I also have doubts about Dr Who.
Quote from: Star-Drive on 04/19/2015 09:43 pm...QUESTION 6: Has NASA Eagleworks addressed the issue with air refraction raised in this paper by Lee and Cleaver from Baylor University?:http://arxiv.org/ftp/arxiv/papers/1407/1407.7772.pdfIn particular, has NASA Eagleworks assessed the likelihood of the path-length-change measurements being the result of transient air heating ?See Dr. White's preliminary assessment of that issue in the attached slide. Ultimately though we will be running the warp-field resonant cavity with a vacuum contained in its active volume to get rid of all possibilities of air heating problems.Best, Paul M.Thanks Paul for your excellent answers.Concerning the likelihood of the path-length-change measurements being the result of transient air heating, were you able to monitor the transient temperature inside the cavity with embedded thermocouples (or otherwise its external temperature with an infrared thermal camera)?If you did monitor the transient temperature, could you make that data/plots available to the public in this forum?Thanks
I thought I would post a graphic I made of a light cone. If I am correct for normal warp the cone just flattens suggesting that the observed mote/traveler could move some maximum distance from their original location at some later time. I would imagine a tilted warp cone might happen where space is swirling around a rotating black hole and drags objects around it. If that space reaches light speed or above then the space moving away looks like an event horizon while the space moving towards us is blue-shifted in spectrum. If the space is moving away at less than c then it should be red-shifted. In that case if one sits still in moving space then they are moving so the axis is tilted. (I guess if our space is expanding this suggest we might have tilted light cones?) I don't know that if the central axis is tilted beyond 45 degrees that the light cone would necessarily cross the plane. I would think light would appear to move at 2*c, 2=m, from an outside observer in one direction and not move at all the other direction m=0 (space is moving against it and it gets nowhere). That would suggest some distortion of our light cone but that it's not crossing the plane where the slope m = infinity. I would think it would require infinite energy to get to warp infinity. Hopefully I'm not too far off here.
....BTW, we are going to add optical borosilicate telescope grade flat windows to the ends of the RF chokes when we get around to pulling a vacuum in this 1.48 GHz resonant cavity.....Best, Paul M.
Quote from: Star-Drive on 04/19/2015 10:00 pm....BTW, we are going to add optical borosilicate telescope grade flat windows to the ends of the RF chokes when we get around to pulling a vacuum in this 1.48 GHz resonant cavity.....Best, Paul M.Issues like this (and several other practical difficulties) associated with doing this experiment in a partial vacuum, lead me to suggest to do different experiments of path length measurement, in the interim, in different inert gas environments, each having different refraction properties. Doing the same path length measurements, but this time in different inert gas environments may serve to put to bed the issue of the interferomenter measurements being due to refraction.http://en.wikipedia.org/wiki/Kerr_effecthttp://www.sciencedirect.com/science/article/pii/S0030401814003794attachment:Measurement of pressure dependent nonlinear refractive index of inert gasesÁ. Börzsönyi,1 Z. Heiner,1,2 A.P. Kovács,1 M. P. Kalashnikov3 and K. Osvay1,*
In the late 70's I worked for a company that made FTIR spectrometers. They use small aperture interferometers for a laser and white light source to locate the position of the moving mirror and to trigger the A/D sampling. ... The best long term stability I was able to achieve with a Digilab interferometer was +/- 40 nM shift in the laser peak wrt to the white light peak over a 24 Hr. period. That interferometer was used on the KAO. However during the test it was mounted in a covered and temperature controlled optical table. The mirror mounts were specially designed to dampen vibrations. With an air bearing Michelson interferometer (one mirror moving) the precision can be monitored. The very small phase shifts ( a few nM) measured by the Eagleworks team as the magnitude of the space-time contractions are more than an order of magnitude below the best positional accuracy a well designed interferometer is capable of. ...
QUESTION 2: If so, did the observed anomalous peak in the Power Spectral Density occur at a frequency in accordance with the time taken to energize and de-energize?Yes, the on/off cycle time was around 1.5 seconds with some uncertainty due to Windows 7.0 time outs. Need a real time operating system (RTOto clear that problem, a RTOS system we don't have.
Quote from: Star-Drive on 04/19/2015 09:43 pmQUESTION 2: If so, did the observed anomalous peak in the Power Spectral Density occur at a frequency in accordance with the time taken to energize and de-energize?Yes, the on/off cycle time was around 1.5 seconds with some uncertainty due to Windows 7.0 time outs. Need a real time operating system (RTOto clear that problem, a RTOS system we don't have.We use Red Hat Enterprise MRG Realtime for our application, and the CentOS project provides a free rebuild version of the Red Hat "kernel-rt" package set which you can install. This site http://dev.centos.org/~z00dax/mrg/ has RPMs for it, but seems a little out of date - the latest RHEL kernel-rt is 3.10.58 - but the free one would probably suit your purposes. It can be a little finicky about hardware sometimes, so you'd want to take that into consideration.