> Ammonia was the first clock wasn't it? I think it was an amplifier, not an oscillator. Microwave Amplification by Stimulated Emission of Radiation = MASER.
> Potentially Na and K have reactive behaviors like catching on fire that > isn't attractive to a manufacturing process. Rb and Cs are even more reactive than Na or K. -John ============= _______________________________________________ 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.