); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY >From Modern Mechanix, 1938....
http://blog.modernmechanix.com/2007/08/13/master-timekeepers-watch-clock-for-nation/ ------------------------------------- Master Timekeepers Watch Clock for Nation Above, granddaddy of all clocks in U. S. shows time in this country and corresponding time in other parts of world Top, tuning radio at naval observatory to receive time signal from naval radio station at Arlington. Center, reading tape from chronograph which checks synchronization of clocks in thousands of a second Left, astronomer at naval observatory operating "Zenith tune," which checks master clocks. It photographs stars crossing the zenith. Chronograph records time of stars' crossing. Above, master clock at observatory at exact noon, eastern standard time, but its face shows seventeen o'clock, which is Greenwich time. P. H. Tobleman points to mechanism that flashes long dash over radio to give correct time -- Margaret Stephanie Leber CCP, SCJP, SCWCD http://voicenet.com/~maggie AOPA 925383 - Amateur Radio Station K3XS - ARRL 39280 - AMSAT 32844 "The art of progress is to preserve order amid change and to preserve change amid order."-A.N.Whitehead _______________________________________________ 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.
