[time-nuts] Local Solar Time Clock

[Flemming Larsen]

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) <tvb at 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" <pnielsen at 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
>> 
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