5 ms·

I believe the idea is that the clocks are synchronised in the frame of the satellite. Due to the relativity of simultaneity, it doesn't make sense to talk abou

by caf 15y ago

I believe the idea is that the clocks are synchronised in the frame of the satellite. Due to the relativity of simultaneity, it doesn't make sense to talk about the clocks being synchronised in an absolute sense. Even if the satellite is swallowed by a black hole, that measurement frame still exists as an abstract concept.

bermanoid 15y ago
I believe you're right, that's basically what this paper suggests. Unfortunately I don't think it matches up with what CERN did in reality, which is synchronize clocks in the ground frame.
- caf 15y ago
  Is there even a single "ground frame" here? The two laboratories are in relative motion.
  - lutorm 15y ago
    What you say is true, but that motion is small compared to the motion of the satellites in relation to either of the ground stations.
lutorm 15y ago
Oh, I think I misunderstood the statement. They original quote must mean receiver and source of neutrinos. Somehow I read it as being the GPS source and receiver, in which case it doesn't make sense.