In message: 49ae3360.4000...@tiscali.co.uk
Dave Ackrill dave.g0...@tiscali.co.uk writes:
: Steve Rooke wrote:
: 2009/3/4 Dave Ackrill dave.g0...@tiscali.co.uk:
:
: When do we get to the 14th month? ;-)
:
: Don't have to, we can get to the 1st month, January.
:
:
: OK, that
I'm in California and 1:59 AM might be pushing closing time, but 1:59
UTC would be 18:59 PDT and 21:59 EDT is workable too. I suggest that
since it is just playing with the numbers everyone might try local
time, UTC, and AM or PM to find a celebration point that works for
you. If
Dave Ackrill skrev:
Steve Rooke wrote:
Don't forget that some countries put the day in front of the month,
IE. it's 4th March here right now. This would mean that these days
would have to celebrated at different times in different countries.
When do we get to the 14th month? ;-)
Any year
Well, that's my point entirely, we have already celebrated pi day here
at the beginning of January but it seems you Americans are late to
party, again :)
Ever had your leg pulled? :)
2009/3/4 Rex r...@sonic.net:
Ahh, my bad. That keeps the slash at the decimal point too. I must note
that our
2009/3/4 Magnus Danielson mag...@rubidium.dyndns.org:
Dave Ackrill skrev:
Steve Rooke wrote:
Don't forget that some countries put the day in front of the month,
IE. it's 4th March here right now. This would mean that these days
would have to celebrated at different times in different
Has anyone here watched Big Bang Theory?
I think it's one of the cleverest sitcoms ever to come out of the US.
The science in it is accurate - verified by a university professor.
I just love it.
Any other comments?
Jim
___
time-nuts mailing list --
A professor of what? Medieval literaturegrin
Well, you never know
-Original Message-
From: Jim Palfreyman jim77...@gmail.com
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: 3/4/09 04:38
Subject: [time-nuts] Big bang theory
Has anyone here watched
2009/3/4 Jim Palfreyman jim77...@gmail.com:
Has anyone here watched Big Bang Theory?
I think it's one of the cleverest sitcoms ever to come out of the US.
The science in it is accurate - verified by a university professor.
But has it been peer reviewed...
I just love it.
Any other
Tom Van Baak wrote:
I was reminded tonight that pi Day is coming on 3/14. That's fine, but
a little inaccurate for our kind.
Suppose I want to gather with friends and buy a round or have a sector
of pie to celebrate. What's the appropriate time to honor?
Since 3/14 is not based on the
Steve
I'll buy you 0.1415926... of a pint if you come over here on that day.
That should make a complete pi of you.
73, Steve
Surely you jest. Most of us wouldn't walk to the fridge for 0.1415926 of
a pint. Maybe it is a decimal point problem. 31.4 pints would probably
have anyone pi
Jim Palfreyman wrote:
Has anyone here watched Big Bang Theory?
I think it's one of the cleverest sitcoms ever to come out of the US.
The science in it is accurate - verified by a university professor.
I just love it.
Any other comments?
Jim
I don't know of it.
Is this US network
Interesting article in GPS World on some jamming trials carried out in UK
last year.
http://tl.gpsworld.com/gpstl/Latest+News/Maritime-Jamming-Trial-Shows-GPS-Vu
lnerabilities/ArticleStandard/Article/detail/584318?contextCategoryId=1385
Rob Kimberley
To quote wikipedia:
David Saltzberg, a professor of
physicshttp://en.wikipedia.org/wiki/Physicsand
astronomy http://en.wikipedia.org/wiki/Astronomy at the University of
California, Los
Angeleshttp://en.wikipedia.org/wiki/University_of_California,_Los_Angeles,
checks scripts and provides dialogue,
Yep US tv sitcom on CBS. But I looked that up since I'm in Australia.
2009/3/4 Rex r...@sonic.net
Jim Palfreyman wrote:
Has anyone here watched Big Bang Theory?
I think it's one of the cleverest sitcoms ever to come out of the US.
The science in it is accurate - verified by a
2009/3/4 Rex r...@sonic.net:
Steve
I'll buy you 0.1415926... of a pint if you come over here on that day.
That should make a complete pi of you.
73, Steve
Surely you jest. Most of us wouldn't walk to the fridge for 0.1415926 of
a pint. Maybe it is a decimal point problem. 31.4 pints would
Jim Palfreyman wrote:
To quote wikipedia:
David Saltzberg, a professor of
physicshttp://en.wikipedia.org/wiki/Physicsand
astronomy http://en.wikipedia.org/wiki/Astronomy at the University of
California, Los
Angeleshttp://en.wikipedia.org/wiki/University_of_California,_Los_Angeles,
checks
Has anyone looked at locking an old mechanical clock to precise time?
What I'm thinking of is something like an old cuckoo clock. The rule
is that the clock remains basically standard and is only steered by
the external source, say, by a magnetic pulse to the pendulum, IE. no
physical connection.
Steve,See http://www.britishtelephones.com/clocks/exchange.htm and
http://www.britishtelephones.com/clocks/clock36.htmMight give you a few
construction ideas.
Ah, they don't make them like this any more. It's the wood, you know, you
can't get the wood. H.Crun.
73 Martin G8BHC
2009/3/4 Steve
In a message dated 04/03/2009 12:12:26 GMT Standard Time,
martinr...@googlemail.com writes:
Ah, they don't make them like this any more. It's the wood, you know, you
can't get the wood. H.Crun.
-
One could always strip down an old Bannister:-)
2009/3/5 Martin Richmond-Hardy martinr...@googlemail.com:
Steve,See http://www.britishtelephones.com/clocks/exchange.htm and
http://www.britishtelephones.com/clocks/clock36.htmMight give you a few
construction ideas.
Thanks. Now that would make an impressive item in the house. I do
remember
2009/3/5 gandal...@aol.com:
In a message dated 04/03/2009 12:12:26 GMT Standard Time,
martinr...@googlemail.com writes:
Ah, they don't make them like this any more. It's the wood, you know, you
can't get the wood. H.Crun.
-
One could always strip down an old
Steve Rooke wrote:
Ah, they don't make them like this any more. It's the wood, you know, you
can't get the wood. H.Crun.
And the brass, you can't get brass like that anymore :)
And whatever happened to that good bacon we used to get before the war?
2009/3/5 John Ackermann N8UR j...@febo.com:
Steve Rooke wrote:
Ah, they don't make them like this any more. It's the wood, you know, you
can't get the wood. H.Crun.
And the brass, you can't get brass like that anymore :)
And whatever happened to that good bacon we used to get before the
In a message dated 04/03/2009 12:49:38 GMT Standard Time, sar10...@gmail.com
writes:
I read that wrong the fist time and could not for the life of me see
how this related to a naked ancient barrister :)
LOL
Not the one living in a fountain in Trafalgar Square by any chance?
John Ackermann N8UR wrote:
Steve Rooke wrote:
Ah, they don't make them like this any more. It's the wood, you
know, you can't get the wood. H.Crun.
And the brass, you can't get brass like that anymore :)
And whatever happened to that good bacon we used to get before the
war?
I can
Rex wrote:
I don't recall this discussion here before, but it should be a good time
sink.
I was reminded tonight that pi Day is coming on 3/14. That's fine, but
a little inaccurate for our kind.
We won't have it until the 31st of April on this side of the pond.
--
Linux 2.6.26
Hi,
Anyone got a PDF of the manual for this synthized 1GHz generator?
I picked on up but it's about 5 MHz off at 500MHZ and unlocked.
Regards,
Robert G8RPI.
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2009/3/5 Rob Kimberley r...@timing-consultants.com:
I can get you some really nice dry cured bacon from Chatsworth Farm Shop if
you want...
Ah, that does sound good but I don't think you'll be able to sneak it
past MAF sadly. They don't take too highly to foodstuffs entering the
country via
2009/3/5 Eamon Skelton nos...@oceanfree.net:
Rex wrote:
I don't recall this discussion here before, but it should be a good time
sink.
I was reminded tonight that pi Day is coming on 3/14. That's fine, but
a little inaccurate for our kind.
We won't have it until the 31st of April on this
In a message dated 04/03/2009 13:56:45 GMT Standard Time,
robert8...@yahoo.co.uk writes:
Hi,
Anyone got a PDF of the manual for this synthized 1GHz generator?
I picked on up but it's about 5 MHz off at 500MHZ and unlocked.
Regards,
Robert G8RPI.
-
Hi Robert
I've got a
I have two Western Union/Self-Winding Clock Company Clocks. Some
background info:
http://www.kensclockclinic.com/pdf/Model%201900S%20White%20Paper.pdf
http://www.prc68.com/I/SWCC.shtml (Brooke Clarke's site, a member of
this list).
I synchronize mine using my NTP server built from a Soekris
Rob Kimberley wrote:
Interesting article in GPS World on some jamming trials carried out in UK
last year.
http://tl.gpsworld.com/gpstl/Latest+News/Maritime-Jamming-Trial-Shows-GPS-Vu
lnerabilities/ArticleStandard/Article/detail/584318?contextCategoryId=1385
To help people with wrap round
The simpler way to prevent mangling of URLs is to put corner brackets
... around the URL. This lets the email reader know where the URL
starts and ends. So, for instance:
I've driven quartz movement clocks with one pps signals, bypassing the
quartz works. To synchronize pendula (?) is relatively simple, but best
done using a mechanical/magnetic impulse phase locked loop, considering
the pendulum as a VCO.
BTW, I recommend Stephenson's new effort, Anathem loosely
Hi Steve,
Have you thought about locking the cuckoo call to GPS? I don't know how
that call is generated, but I guess it wouldn't be too difficult to control
electronically.
Ron
G3SVW
- Original Message -
From: Steve Rooke sar10...@gmail.com
To: Discussion of precise time and
-Original Message-
From: time-nuts-boun...@febo.com
[mailto:time-nuts-boun...@febo.com] On Behalf Of Steve Rooke
Sent: Wednesday, March 04, 2009 5:44 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] GPS disciplined mechanical clocks
2009/3/5
I once GPS disciplined a friends grandfather clock from the mid 1700's. Used
an opto interrupter and solenoid to nudge the pendulum. If I remember right I
had to generate 24 pulses per minute. It worked surprisingly well. The next
mod was to make it self winding, but she moved away
Group,
Looks like this subject has ended, so I'll summarize:
Bruce Griffiths said the plastic has 12X the expansion coefficient of
copper, so cold alone shouldn't have pulled the center pin. Now I wonder
if the cold contraction pushed the insulation along the core wire and
then pulled the pin
Bill Hawkins wrote:
...
Speaking of conversions, I grew up (since 1938) with movie credits that
mentioned the Gaffer (head electrician). Last year I mentored students
building a robot for a FIRST Robotics competition. The carpet on the
field would be marked with red, black, and white gaffer's
Don and group,
I was about to write about the pendulum as a VCO concept. I've seen
articles in the NAWCC Horological Journal that describe ways to do it,
but have been hesitant to do anything to my grandfather's Seth Thomas
wall clock. It gets wound once a week, and generally doesn't need
Actually it is duct tape.
Used to air seal the metal joints in a metal duct work system for heat
and AC.
New building codes require a mastic paint be applied over all metal
joints in the duct work system.
I guess it is an energy conservation issue, so the processed air does
not leak into
I know. Did you read my post?
-Chuck Harris
Stan W1LE wrote:
Actually it is duct tape.
Used to air seal the metal joints in a metal duct work system for heat
and AC.
New building codes require a mastic paint be applied over all metal
joints in the duct work system.
I guess it is an
In message 49aef43d.3010...@verizon.net, Stan W1LE writes:
Actually it is duct tape.
No it is not.
Duct tape is made to stay stuck and tight on ventilation ducts in
a wide range of temperatures and humidities, it is not meant to
come off again, ever, and if you try, it will leave a sticky
In message 48e1c1775b054c2e9d30e7782a40a...@cyrus, Bill Hawkins writes:
Several people said 20 feet unsupported was too long, but I'm not gonna
fill a 10 foot, 6 inch diameter pipe with foam. I'll get some light
chain [...]
Over here you can buy a clothes-line which is actually a nylon covered
Gaffa tape is Gaffer's tape. From the production electricians in film
and television studios. It's usually fabric and flat colors to blend in
with sets and floors. It is usually stronger than duct tape, tears
easier, and costs more. The good stuff also leaves less residue behind
when removed,
2009/3/5 Lux, James P james.p@jpl.nasa.gov:
Those Danes must be keeping it to themselves. I never trusted
them since they started raping and pillaging all over the place.
Isn't that why they built that wall? Just one of the many things that the
Romans have done for us (after
Another, maybe the original tape, was called 100 Miles per Hour Tape
and was sold years after fabric
covered aircraft wings went out of style as it was so universally
useful.
As the name suggests it was rated for repair of aircraft fabric to be
used up to speeds of 100 MPH.
cheers, Neville
2009/3/5 Neville Michie namic...@gmail.com:
PS. I have a type 36 post office clock running and it has a
synchronising relay that forces the phase
of the 30 second output pulses to the nearest 2 seconds, by rotating
the count wheel which has a cardioid cam.
At a fixed time every day this
Bryan Mumford (bmumford.com) did a lot of work developing pendulum clocks
that were driven by a Fedchenko electromagnetic drive. The drive circuit
would both put energy into the pendulum and use the pulse to drive an
electric clock face to display the time. He never got to the point of
In the evolution of timekeepers the SHORTT CLOCK was one of the great
milestones.
see http://www.electric-clocks.nl/clocks/en/page10.htm
This clock used a pendulum running free to synchronise another
pendulum that did all the housekeeping work.
The work pendulum was adjusted to be
mechanical, more of a hybrid, but I don't know how you'd discipline a
mechanical clock with a system that had to drive in parallel with the escape
mechanism, the two would fight each other.
Eric,
Precision pendulum clocks, when mounted near each other,
have been known to eventually get into
In the evolution of timekeepers the SHORTT CLOCK was one of the great
milestones.
...
These clock kept very good time.
Cheers, Neville Michie
Yes, stability at 1 day was right around 1e-8 for a Shortt.
Stability (ADEV) of one Shortt pendulum clock:
http://www.leapsecond.com/museum/shortt/
So if I set my GPS locked 3325B to 1Hz (sine wave) and put that into my MK
subwoofer and sat that next to my pendulum clock (with its ~1m long Reifler
pendulum) it should keep perfect time.
Beauty!
2009/3/5 Tom Van Baak t...@leapsecond.com
mechanical, more of a hybrid, but I don't know how
Actually, simply use a pendulum in a vacuum chamber, and pulse a LED shining
toward the pendulum in the plane of rotation. Eventually, radiation pressure
will synchronize it...
Don
- Original Message -
From: Jim Palfreyman jim77...@gmail.com
To: Tom Van Baak t...@leapsecond.com;
2009/3/5 Tom Van Baak t...@leapsecond.com:
In the evolution of timekeepers the SHORTT CLOCK was one of the great
milestones.
...
These clock kept very good time.
Cheers, Neville Michie
Yes, stability at 1 day was right around 1e-8 for a Shortt.
Stability (ADEV) of one Shortt pendulum
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