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In my model no-one has to disagree about anything. Distances are constant, and just by understanding which rate of time one is using to measure, everything is abundantly clear to everyone no matter where they are, although they may not be observing the entire pis tire where rates of time differ vastly, because the observation will be proportional to the difference in rate of time and observations will result in being descrete, or quantised.
Well SR might dictate that in current physics, but my model attributes SR as a mass in relation to velocity phenomenon experienced only by the traveller, and that light with no m is not affected. Light travels as per the 3rd time dilation.
Time does not run fast in space it runs slow.
Quote from: timey on 18/03/2017 19:48:46Well SR might dictate that in current physics, but my model attributes SR as a mass in relation to velocity phenomenon experienced only by the traveller, and that light with no m is not affected. Light travels as per the 3rd time dilation.Then you are proposing to throw SR out the window. I can't help you with that. Many have tried. All have failed. Note that, although SR has consequences for the concept of inertial mass (which are confirmed by experiment), it does not depend on it.
Did you not read my post of 293?
I'm proposing that SR as a means of describing spatial space curvature be placed on the window ledge, in favour of the 3rd time dilation describing a temporal space curvature, and then aback off the ledge for a re-instating of SR time dilation as a rate of time experienced by the traveler, and the travellers perception of spacial dilation as being a result of the slower time.
I presume your bystander perceives the traveller to be moving away from the gravitating mass with constant velocity. That's a very complicated scenario. The thrust of the rocket engine has to exceed the force gravity for a while in order to achieve cruising speed. It then has to be reduced abruptly to match the force of gravity at the point where cruising speed is achieved and backed off gradually thereafter to maintain cruising speed as the force of gravity recedes. The rocket engine adds energy to the traveller at a variable rate and that alters the space-time continuum in an unknown manner. Furthermore, the rocket loses mass over time as it generates thrust.