[ARC5] NSS Cutler, ME

Wed Nov 27 15:15:17 EST 2013

HaHa - That's what I was getting at....Does time "arrive" in quanta?  Are
there pre, present and post quanta?
Time for a beer......

On Wed, Nov 27, 2013 at 11:35 AM, J. Forster <jfor at quikus.com> wrote:

> If you mean is time quantized, ask Stephen Hawkings. He's about the only
> one who can answer that VERY deep question.
>
> -John
>
> ===================
>
>
>
>
>
> > Good stuff Roy - Thanks!
> > Question:  Is time digital or analog?
> >
> >
> > On Wed, Nov 27, 2013 at 11:06 AM, Roy Morgan <k1lky68 at gmail.com> wrote:
> >
> >>
> >> On Nov 27, 2013, at 11:57 AM, D C _Mac_ Macdonald <k2gkk at hotmail.com>
> >> wrote:
> >>
> >> > Were time signals (ala WWV) once sent from a "Naval Observatory?"  Was
> >> that once the location of WWV?
> >>
> >> I’m not sure about radio transmissions from the Naval Observatory.  It’s
> >> possible that time signals from the Observatory went by wire to the
> >> NBS/WWV
> >> site which was not far away at that time.  As I have been writing this,
> >> Richard reports hearing time signals on NSS from Annapolis.  Most likely
> >> there was a wire from the DC observatory headquarters over to Annapolis.
> >>  And Mac reports hearing the voice time announcement. To See USNO time:
> >>
> >> Main Navy Time link:
> >> http://tycho.usno.navy.mil/  Click “Time” for the choices
> >>
> >> Simple web page numerical display:
> >> http://tycho.usno.navy.mil/simpletime.html
> >>
> >> Animated GIF window:
> >> http://tycho.usno.navy.mil/what1.html
> >>
> >> The voice by telephone service:
> >> Time Voice Announcer, Washington, DC:           202-762-1401 &
> >> 202-762-1069
> >> Time Voice Announcer, Colorado Springs, CO:     719-567-6742
> >>
> >> The Naval Observatory is in two places in DC.  The headquarters is
> >> within
> >> sight of the Lincoln Memorial at the west end of the Mall.  The
> >> mechanical
> >> clocks for Navy standard time were there, and the more modern
> >> physics-based
> >> ones may still be.  The astronomical observatory was a few miles (maybe
> >> 4
> >> miles) off to the North, still within the District of Columbia I think.
> >>  The US Vice Presidents residence is there.  There the now-ancient 24
> >> (?)
> >> inch refractor telescope is still in operating condition, and the
> >> “Transit
> >> Telescope” is also.  This latter was still in use in the late 80’s when
> >> I
> >> visited there.  It is precisely fixed in rotation in east-west angle but
> >> moves easily in elevation.  We watched the observer lie underneath it on
> >> a
> >> mechanics-like dolly and swing the telescope to watch a star transit the
> >> scope’s center line, and push a button at the right instant.  That time
> >> mark, combined with much accurate calculation, and many more like it,
> >> establishes the sidereal time.  As I understand it, sidereal time
> >> wanders a
> >> bit with respect to UTC (or NIST-A) time but is still used for some
> >> things.
> >>  More info is at:   http://tycho.usno.navy.mil/sidereal.html       “…
> >> Astronomers use local sidereal time because it corresponds to the
> >> coordinate right ascension of a celestial body that is presently on the
> >> local meridian.” One of the very early transit telescopes was/is located
> >> in
> >> now-suburban Maryland in Rockville.  The building is still there, but I
> >> don’t know if the instrument is.
> >>
> >> The division of responsibility for time keeping is roughly:  Military
> >> purposes, Naval Observatory.  Civilian and international purposes:
> >> NIST/WWV.  Naturally, the two organizations coordinate with each other.
> >>
> >> During  the early years, the WWV time broadcasts came from Greenbelt,
> >> MD,
> >> just to the NE of the District.  That all moved to Boulder CO, (in the
> >> early 60’s I think).  I remember hearing the time broadcasts from
> >> Greenbelt, and have visited the Boulder facility.  At the time of the
> >> visit, there were three Master Clocks, made by HP I think, in operation
> >> I
> >> think there is a compare and vote system to eliminate one if it messes
> >> up.
> >>  the voice that announces the time (and other things) is now solid state
> >> memory/playback, but it used to be a drum magnetic recorder that was
> >> played
> >> automatically.
> >>
> >> The NIST Time and Frequency Division is part of the NIST Physics
> >> Laboratory.  The research and development of newer time standards goes
> >> on
> >> at Boulder.  When I was there they had become able to get the “Fountain
> >> Clock” to operate for some 20 minutes before it quit.  No doubt by now
> >> the’ve made considerable progress.  The “Fountain Clock” was calculated
> >> to
> >> develop an error of a second in some gad zillions of years.  It’s quite
> >> possible that we won’t be here to notice the error.
> >>
> >> Time is a most interesting topic.
> >>
> >> Roy
> >>
> >> Roy Morgan
> >> RoyMorgan at alum.mit.edu
> >> K1LKY Since 1958
> >>
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