M. Warner Losh wrote: > In message: <20090522185851.4137db...@ip-64-139-1-69.sjc.megapath.net> > Hal Murray <hmur...@megapathdsl.net> writes: > : > : rich...@karlquist.com said: >> : Did you have any trouble convincing the airlines and/or FAA that it was > safe > : to take an atomic clock on a plane?
I never heard about any issues of hand carried atomic clocks. The old photos of Len Cutler watching the airline porters carrying the clock up the stairs to the plane give the impression that the airline was honored to be asked to participate. There is a very long story about this that boiled to the the idea that the cesium beam tube itself has been approved as a shipping container for the cesium. If you have ever picked up a cesium beam tube, you will appreciate that it is built like a battleship. Thus it requires no special shipping container for either a replacement tube or an instrument. The tube says "cesium device; nonradioactive". Rick Karlquist N6RK _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
