3 ms·
> Reference frames are local constructs, they cannot be used to (uniquely) define simultaneity over large distances. Large distances? Please, we are talking ab
by pif 10y ago
> Reference frames are local constructs, they cannot be used to (uniquely) define simultaneity over large distances.
Large distances? Please, we are talking about a couple thousand years: what's that compared to the age of the universe?
- dsqrt 10y agoLarge and close is respect to the light-crossing time and the accuracy with which you want to timestamp an event. If you care about years, 1 light year is already a large distance.