> Do read the article in question. You would love to see the graphs and > texts. It's quite readable. > > The SPS produces 400 GeV/c protons which is extracted by a kicker magnet > in two 10,5 us long bursts, 50 ms apart. See page 4 of 1109.4897v1. > > http://arxiv.org/abs/1109.4897 > > Contol is well timed with the Xli GPS receiver.
>From page 7: "It is worth stressing that this measurement does not rely on the difference between a start (t0) and a stop signal but on the comparison of two event time distributions." I wish I had time to go through the whole paper. :( One thing that makes me a bit nervous right off the bat: unless these time distributions are identical in shape, they will have different phase velocities. If edge A is produced by an impulse with different spectral characteristics than those associated with a second edge B, then you cannot trivially say that edge A is X nanoseconds ahead of or behind edge B. Paradoxical "faster-than-light" communication claims based on this misunderstanding are not unheard-of in the hallowed halls of Usenet. But it's unthinkable that phase velocity and group velocity would be unaccounted-for at this level of play... -- john _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
