Small brass cannon. Use a small telescope pointed at the sun at transit, with the output side focused on the fuse.
Loud bang ,.. it's 12:00 o'clock. -- FL On Saturday, January 18, 2014 4:23 PM, Tom Van Baak (lab) <t...@leapsecond.com> wrote: VCR's were well known "to reliably read 12:00 throughout the year"... > >Do you want to make or buy? Using a microprocessor, it's easy to drive a >stepper-motor based wall clock at slight offsets from true 32 kHz or 1 Hz >rate. Converting UTC/1PPS to solar rate and time for your given location and >time of year is easy with an Arduino or RPi. > >You can double check the clock with a sundial. > >Add NTP and DUT1 corrections for sub-second accuracy. Add GPS if you want the >clock to self-adjust when moved east or west (noon moves a couple of >milliseconds per meter). This feature would be especially cool if the clock >were used in a vehicle. > >/tvb (i5s) > >> On Jan 18, 2014, at 2:25 PM, "P Nielsen" <pniel...@tpg.com.au> wrote: >> >> I am looking for a physical clock (not software) that will indicate local >> solar time. IOW when the sun is at its highest point, the clock would >> reliably read 12:00 throughout the year. >> >> >> >> Is there a commercial product or kit available for this? >> >> >> >> Thank you for any suggestions. >> >> >> >> P Nielsen >> >> _______________________________________________ >> 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. > >_______________________________________________ >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. > > > _______________________________________________ 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.
