atw: Re: OT Howard's year and all that [SEC=UNCLASSIFIED]
- From: Robert Levy <robert@xxxxxxxxxxxxxxxxxxxx>
- To: austechwriter@xxxxxxxxxxxxx
- Date: Fri, 24 Aug 2012 10:06:09 +1000
Also, every 50,000 years, earth's day gets longer by a second.
rwl
On 24/08/2012, at 9:54 AM, Peter.Martin@xxxxxxxxxxxxxxxxxx wrote:
> Not trying to pick on Howard, but his concerns got me interested in some
> byways so I thought I'd share one of the definitions of a year that still has
> a few problems, but sounds impressive:
>
> 365.25 days in a year where each day consists of 86400 SI seconds, where
> each second has been defined (since 1967) as the duration of 9,192,631,770
> periods of the radiation corresponding to the transition between the two
> hyperfine levels of the ground state of the Caesium 133 atom.
> Sheer poetry. Ain't the net wonderful ? Sleep well in these cold
> winter nights, Howard.... we're getting closer.
>
> Now.... what to do about the fact that this year there actually was a time
> (on June 30) of 23:59:60.....
>
> My head's starting to hurt.
>
> Howard, I think it's catching !
>
>
> Peter M
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