On 13 Sep 2014 01:23, "Alexander Pummer" <[email protected]> wrote: > > just open the box, look for the wires which going to the magnet which drives the minute hand and measure the period time -- not the frequency, it is to low > yes analog quarz clock slows down as the battery get old, you will be surprised, that the driver pulse's period time dos not change, but sometimes the divider chain or the mechanic skips a pulse, as the battery voltage drops further suddenly the clock mechanic or the electronic will stop working, takes less current so the battery recovers a bit, because the magnet did not used power for a while, and will run again for a while, the pause between two run time will be larger and larger so the clock looks like going slower > 73 > Alex
So if it the mechanics skips a pulse, one really needs some method of measuring the position of the hands and recording that. In any case, the explanation you give is different to Dave McGuire. Maybe the second hand is more likely to slip if trying to fight gravity (between 30 and 0 seconds) and less likely when gravity helps (between 0 and 30 seconds) It would be interesting to see a detailed study of this. Dave _______________________________________________ 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.
