[time-nuts] Primary Time Standards

Poul-Henning Kamp phk at phk.freebsd.dk
Fri Jul 15 08:44:10 UTC 2011


In message <CAHZk5WevGxYrG_NK9mXAkcU8bEzoPwHZpJ-BqfXYEhWy_jALrQ at mail.gmail.com>
, Sanjeev Gupta writes:

>> Some day the definition of the SI second will change; optical clocks [...]
>
>And hopefully, easier to realise in practice.

Probably not.

The down-side to optical clocks is that linear distances becomes
much more critical, so temperature-control is almost certainly
a prerequisite.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
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Never attribute to malice what can adequately be explained by incompetence.




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