Thanks for that input John. > Le 21 nov. 2017 à 21:26, John Ponsonby <[email protected]> a écrit : > . > 7. The RF discharge generates UV. This shines up the beam path and > illuminates the bulb coating in the region where the incoming atoms first > make contact with the bulb coating. This UV undoubtledly damages the FEP120 > coating. The deterioration of the coating may be one of the causes of long > term drift.
Your excellent contribution addresses an issue of long term drift but Dana Whitlow’s question in a previous post which I repeat here related to a short term issue. « On the day of eye passage over the site ( of the eye of a hurricane) the frequency suddenly decreased by a few parts in 10^14, held about constant for roughly a week,then resumed almost its original value and drift rate thereafter. « Maybe you could shine some light on that reported temporary frequency offset. > Cheers > John P > > _______________________________________________ > 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. "The power of accurate observation is commonly called cynicism by those who have not got it. » George Bernard Shaw _______________________________________________ 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.
