(02-13-2017, 07:19 AM)Drashner1 Wrote: The problem I'm seeing with all this is that it seems to assume an absolute reference frame from which it is possible to say that one has move 10 years into the 'past' or the 'future' (in relation to what?). But my understanding is that this is not how relativity or the universe works.
No we're using the systems (specifically alpha) as the reference frame. From Alphas perspective Bob would look like he's travelled ten years into the past because if they look through a telescope they would see him pop out of the wormhole the instant he stepped in. Given that they know the distance to Gamma he would appear to have travelled ten years into the past. Likewise with Alice in the opposite direction (it would take them twenty years to make the observation she travelled ten into the future).
(02-13-2017, 07:19 AM)Drashner1 Wrote: Also, it feels like you're ignoring the frame of reference of both Beta and Gamma, within whose reference frames it took 50+ years (83+years actually) for the ships carrying the wormholes to get there. Also, it would take 66.67 years from the frame of reference of the ship(s) to travel 50 light-years at .6c, not including accel/decel time (which may or may not be ignorable for the purposes of this thought experiment).
Ah yes that is an error in my working out. The wormholes would be displaced by 16.66 years in time, not ten. It's too late to work it all through again (the outcome will still be the same, no time travel and disagreeing calendars), I'll write up a correct version for posterity tomorrow.
The acceleration time can mostly be ignored, especially if we consider 0.6c as representing the average speed and time dilation.
(02-13-2017, 07:19 AM)Drashner1 Wrote: On a related note- this page HERE might help with any calculations.
Cheers!
OA Wish list:
- DNI
- Internal medical system
- A dormbot, because domestic chores suck!