); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] > Has there been any attempts (or successes) at someone outside of a > national laboratory, and commercial R&D groups to build a primary > frequency/time standard?
Two attempts to build hydrogen masers that I know of; little or no progress. > I am not sure if there is anything that would prevent an individual > from building a cesium standard of the quality seen in early models > from NPL and NIST, or an industrial style (compact Ramsey cavity) > standard. > > -Michael Yes, it would be possible. I know that several of us have considered it, for a few minutes at least. It would require some expertise in physics, electronics, glass and metal fabrication, vacuum systems, magnet design, electron multipliers, and who knows that else. You'd go through many prototypes. To see if it's working you might want another one in-house. You'd learn a great deal. It would be an amazing story. In the end, you'd end up with a standard accurate to one part in ten to the 10th or 11th that would work for hours or even days at a time. The reason no one has tried it, I believe, is that you can get the same or better accuracy with a simple $75 GPS receiver today. It would seem motivation for the project would be the biggest problem. /tvb _______________________________________________ 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.
