[time-nuts] Why 9,192,631,770 ??

[J. Forster]

"Connections" is a wonderful series, as is "The Day The Universe Changed".
Thanks for the YouTube link.

-John

================


> James Burke did a whole episode of Connections on that subject:
>
> https://www.youtube.com/playlist?list=PL777ACC303F62C744
>
> The oldest example of an automated phase locked loop I have heard of
> was used for calibrating newly built pendulum clocks to a master
> pendulum clock.
>
> On Wed, 9 May 2012 17:45:06 -0500, "Don Lewis"
> <dlewis6767 at austin.rr.com> wrote:
>
>>Thanks, all ...this thread has helped me a lot.
>>
>>It reinforces my beliefs of what a 'second' is ...what we were taught
>> from
>>day 1 in school:
>>
>>One solar day/86,400 (A 'solar' day being an earth solar day)
>>
>>So as I try to rationalize all this in my mind, ...a good cesium unit is
>>just a sophisticated 'counter'.  The counter gate is just the solar day.
>>
>>It's interesting to note (to ask?): When did someone get smart enough to
>>start measuring 1/86thousthanth of a day, ....That starts needing a
>> standard
>>in itself.
>
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