[ARC5] NSS Cutler, ME

Wed Nov 27 15:17:23 EST 2013

IMO, that's a REAL physics question.

It's long been known that EM radiation, from LW to Gammas, are quantized
(Einstein- photo electric effect). You can demo this on a tabletop.

But, whether time (or gravity) is quantized also is an open question, AFAIK.

-John

==================

> 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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