[ntp:questions] A Suggestion For Abolishing the Leap Second
"http://www.guymacon.com/" at ntp.isc.org
Fri Jun 8 03:07:06 UTC 2007
Per Hedeland wrote:
>>Danny Mayer wrote:
>>> You *must* stop sending messages to the newsgroup that consist of
>>> nothing but a quote from someone else. If you want to keep quotes send
>>> them to yourself. This is *not* your personal message archive. Noone is
>>> interested in what you think is important.
>>Oh, indeed, one could. But the people with the problem with UTC are
>>people working with space probes to Mars and suchlike, so that is why
>>the Earth's motions in the Solar System are an issue to them.
>>I don't know why it isn't part of your reply, or why you didn't see
>Probably brokenness in the news->mail gateway (Danny uses the mailing
>list). You seem to frequently have a lone dot as the first line of your
>text in followups - nothing wrong with that, but maybe not much value
Here is his entire post, byte-for-byte, exactly as Google handed
it off to Giganews. Nothing appears to be missing.
If those of you who saw a partial post would be so kind as to post
the Path you see in the headers, there is a good chance that I can
identify where the information is being lost and let the admin of
that system know about it.
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From: Quadibloc <jsavard at ecn.ab.ca>
Subject: Re: A Suggestion For Abolishing the Leap Second
Date: Thu, 07 Jun 2007 05:21:40 -0700
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Rob van der Putten wrote:
> Quadibloc wrote:
> > Yes, this is quite right. However, while the second is no longer
> > defined in terms of a fraction of the tropical year in 1900, the
> > Earth's rotation still factors in to this in a more subtle way.
> > You see, the Earth is in *motion*. And the SI second is defined (in
> > practice, within the framework of UTC) as so many vibrations of a
> > cesium atom...*sitting on the Earth*. So what was being referred to in
> > what you are quoting is _not_ time being defined in terms of the
> > Earth's motion, instead of being atomic time (the poster works for
> > NIST, and has authored several papers on the atomic time scale) but
> > the fact that our current time scale doesn't include *relativistic
> > corrections* for the Earth's motion.
> I suppose one would have to apply a correction for the movement of the
> solar system through the galaxy as well. And the movement of our galaxy
> through the universe.
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