Wouldn't this be a pin-extractor?
-Don
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Bob Stewart
Sent: Monday, December 09, 2013 8:53 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts]
No. Wrong shape.
-John
==
Wouldn't this be a pin-extractor?
-Don
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Bob Stewart
Sent: Monday, December 09, 2013 8:53 PM
To: Discussion of precise time and
Here's a specific reference from 1931:
http://adsabs.harvard.edu/full/1931MNRAS..91..575B
Bill Hawkins
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Brooke Clarke
Sent: Tuesday, December 10, 2013 12:55 AM
To: Discussion of precise
Sorry, I should have read the article. It was found by asking for
Loomis moon pendulum
The article is fascinating to Shortt clock fans, but does not mention
the moon.
Use their page back to get the whole article.
Bill Hawkins
-Original Message-
From: Bill Hawkins [mailto:b...@iaxs.net]
Its not in the Loomis article, lunar influence is in the Brown and Brouwer
analysis, beginning on pg. 581.
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Bill Hawkins
Sent: Tuesday, December 10, 2013 11:12 AM
To: 'Bill Hawkins';
There should be some error if you are to buy into Dr Allan's new gravitational
theory. Has anyone attempted to duplicate his experiments concerning high
energy density effects on a Shortt Clock? I posted a link to Dr Allan's web
site last night on this thread.
Thomas Knox
From:
Hi,
John is correct. The plastic pin is used when a contact position is not wired.
You put the unwired pin in first and then insert the plastic pin behind it,
thick end first. It replaces the wire to seal that individual hole and also
maintain correct seal pressure on the other wires. Blue for
Thanks Robert. So, am I right in thinking that you insert the small end from
the connector side of the rubber grommet and pull it through until the thick
part just touches the narrowed place in the grommet? They have it sized to
imply that. Are there any assembly documents on the net that
If you are using both wires of a two-pin connector the question is moot.
There are exquisitely detailed docs on connector assembly out there, both
from the manufacturers and agencies like NASA. They include everything
from tool settings, proper locators, to assembly torques.
IMO, unless you are
Hi Bob,
Not quite. You push the thick end of the plastic plug (technically a wire hole
filler which says it all) into the rubber seal from the wire (back) side of
the connector. You should of course have put an uncrimped pin in the positon
first.
There is some guidance here
The Wiki page for the Shortt pendulum clock has a Recent Measurements
(1984) paragraph that's in error.
http://en.wikipedia.org/wiki/Shortt-Synchronome_clock#Recent_accuracy_measurement
While it's probably true that the clock is stable to 200 uS per day (i.e.
2E-9) I believe Alfred
One could try claiming that Loomis was the first to make detailed
measurements of a Shortt, but it would take some digging to prove
he was first and not just one of the first.
Just FYI:
During my reading of BSTJ I noticed a reference to a paper by
Loomis and Marrington at bottom of p4:
FWIW
Let me just second Tom's last comment:
Some of you readers might wonder why in this GPS age, two time nuts, each
with plenty of atomic clocks at home, would be talking about vintage
pendulum clocks. It turns out that pendulum clocks are still extremely
interesting timekeepers, from an
Brian and Tom: I second as well. It's important to be aware of the past.
Somewhere around here is a 4 ft length of Invar, 1/2 in. diameter. It
was supposed to be a pendulum rod. However, I did read that Invar
displays rearrangement noise of some kind. Kinda like the jumps in a
quartz element?
I
Been reading and not getting tangled up. Agree that it seems like a
reasonable subject. Though I have no pendulum clocks. I was struck by their
beauty up in Canada at TVAs television studios. On the wall was this
amazing clock on a huge slab of metal. All it needed was a battery. Other
then that
Hi Tom:
Here's a web page that has an annotated list of some patents applicable to
pendulums:
http://www.prc68.com/I/Pendulums.shtml
Many of the early gravity meters were just pendulums, then came the falling
corner reflectors.
There are a couple of patents by Dicke and this one:
3036465
I always thought invar was the magic metal. Quartz rod? You can get
those
at some reasonable cost?
12 mm dia fused qtz, about $10 per ft, so under $40 to get going,
assuming 4 or 5 to learn how to do it right. It does break...
12.7 mm dia Invar 1 m long is $530 Amazing, and quartz is better
Brooke Clarke
PS When I was working in microwave electronics we talked about the Dicke
radiometer, but I haven't found any definitive
web page about that.
Gotta look at Radio Astronomy pages and history. Actually, Dicke was
using that radiometer to look for the microwave cosmic background,
It is not surprising that one can find little about Alfred Loomis. He was
notoriously publicity shy and never gave interviews. Before his death he had
much of research material disposed of. However the private lab he created at
Tuxedo Park NY. was a gathering place for all of the key scientists
On 12/10/13 5:57 PM, Don Latham wrote:
I always thought invar was the magic metal. Quartz rod? You can get
those
at some reasonable cost?
12 mm dia fused qtz, about $10 per ft, so under $40 to get going,
assuming 4 or 5 to learn how to do it right. It does break...
12.7 mm dia Invar 1 m long
20 matches
Mail list logo
