[time-nuts] new Al atomic clock publication

paul swed paulswedb at gmail.com
Fri Feb 5 22:38:13 UTC 2010


The shielding blocked the light so they took it off.

On Fri, Feb 5, 2010 at 4:30 PM, Bob Camp <lists at cq.nu> wrote:

> Hi
>
> All that work and the biggest chunk of uncertainty contains "fluctuations
> caused by periodic line noise (50 to 60 Hz)".
>
> I guess even NIST can't afford good shielding....
>
> Bob
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Chris Caudle
> Sent: Friday, February 05, 2010 3:22 PM
> To: time-nuts at febo.com
> Subject: [time-nuts] new Al atomic clock publication
>
> No discussion on the new Al based atomic clock paper from NIST?
>
> http://arxiv.org/PS_cache/arxiv/pdf/0911/0911.4527v2.pdf
>
> "Here we describe an Al+ ion clock with an inaccuracy of 8.6×10&#8722;18."
>
> Doesn't get more nutty than that.
>
> --
> Chris Caudle
>
>
>
>
>
>
>
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