Timeline for Logistics of civilization with point-to-point superluminal travel calculating a pseudo-current map of the galaxy's navigational hazards
Current License: CC BY-SA 3.0
8 events
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| Oct 15, 2016 at 20:20 | comment | added | JDługosz | By choice of axis (reference frame) I mean by an arbitrary observer, not the preferred frame of the FTL mechanism. The existence of some ftl traveller does not change the functioning of Minkowski spacetime for everyone else! “simultanious” is not an absolute truth, and allowing restricted ftl doesn’t change that. | |
| Oct 15, 2016 at 20:14 | comment | added | JDługosz | I think you need to develop that into a full answer. The terseness of a comment doesn’t allow you to explain your terms and make clear points. Relating to my post are you referring to the setting of SRF=GRF? The back-and-forth in time happens for some observer’s choice of reference frame. Or are you referring to forcing all ftl transits to use the same reference frame in general? | |
| Oct 15, 2016 at 10:05 | comment | added | MichaelS | @JDługosz: There's only one choice of axis that allows light to travel the same speed in all directions for both the preferred frame and the FTL frame. Any other axis and you'll realize that FTL moves you back and forth in time. I suppose you could decide the Aether is moving relative to spacetime. But you still only get two possible timelines, instead of infinity. So if you're calculating from a single reference point, you just need one transform to apply to all FTL travel. | |
| Oct 15, 2016 at 6:30 | comment | added | JDługosz | @MichaelS your first sentence is wrong. See this post. How do you think superluminal travel between events in spacetime changes the fact that you can choose an x axis to assign equal time values across space? | |
| Oct 15, 2016 at 3:40 | comment | added | Anonymous | @CharlesGillingham: so does this mean that a concept like the "red line" makes sense? | |
| Oct 15, 2016 at 3:27 | comment | added | Anonymous | @MichaelS: I am not assuming any privileged frames of reference. I am only assuming that you can't travel back to your point of origin before you left. | |
| Oct 15, 2016 at 2:37 | comment | added | MichaelS | As to your last paragraph. I think as soon as you hit superluminal speeds, the "now is relative" part of relativity goes away. Regardless, "now" would be calculated relative to the normal motions of stuff in the galaxy, which are similar enough that the differences between relative "now"s are pretty trivial, plus there would be a normalized reference frame to get even more accuracy. | |
| Oct 15, 2016 at 2:33 | history | answered | Charles Gillingham | CC BY-SA 3.0 |