On the Physical Separation of Time

[deSitter]

Anamitra, how do you interpret this?

https://www.physicsforums.com/showthread.php?t=172288

Here we have an example of something is both moving and stationary, depending on how you interpret it. So time means something different with distant objects. Cooperstock was at pains to explain this in his book "General Relativistic Dynamics". The correct understanding is essential for the correct interpretation of distant processes.

edit: Here is Cooperstock's paper on "General Relativistic Velocity"

http://arxiv.org/abs/0712.0019

and here is the application

http://arxiv.org/abs/1101.3224

-drl