Posted on (UTC-4)
2012-07-19 @ 00:12:56
But if the detectors/observers happened to be at the exact points of impact of the lightning?
2012-07-18 @ 05:16:12
While simultaneity is relative to the observers, what if the observation of the lightning strikes were made by sensors on either end of the train carriage, surely we could then figure out whether the strikes occurred simultaneously or not?