[time-nuts] First "accurate" atomic clock video

paul swed paulswedb at gmail.com
Tue May 8 12:56:59 UTC 2012


Thanks had not seen it before.
Now thats a real C reference. You can refill the Cs it seems as simple as
dumping new Cs stuff in the oven and bolting it in. ;-) Well maybe not.
All that said pretty amazing how small they ended up making them.
Regards
Paul

On Tue, May 8, 2012 at 6:52 AM, Rob Kimberley
<robkimberley at btinternet.com>wrote:

> Mike,
>
> Thanks for posting that. A wonderful film, and a great insight into early
> Cs
> development.
>
> I was lucky to see one of their Cs fountains a few years ago when attending
> an NPL T&F Club meeting. They also gave us a view of the work being done on
> optical clocks.
>
> Louis Essen would have been most impressed.
>
> Rob Kimberley
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Michael Costolo
> Sent: 08 May 2012 11:22
> To: time-nuts at febo.com
> Subject: [time-nuts] First "accurate" atomic clock video
>
> I've always been fascinated with science history.  If you all haven't seen
> this already, here is a video from 1955 about the first "accurate" cesium
> atomic clock designed by Louis Essen and made in the UK's National Physical
> Laboratory.  Interesting that the one made after the prototype was 17 feet
> long.
>
> http://www.youtube.com/watch?feature=player_embedded&v=MGoVXLzUDsQ
>
> -Mike-
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