I ran efc_comp and the efc table is slowly filling!
p4th D efc_rep
1.115185 672147.2 1 6.721472e+05 0.00e+00 0.00e+00
2.115185 672145.6 1 6.721456e+05 0.00e+00 0.00e+00
3.115185 672118.4 1 6.721184e+05 0.00e+00 0.00e+00
4.115185 672121.8 1 6.721218e+05 0.00e+00
Ed, et al,
I was just cleaning up the workbench and this gave me time to reflect of the
FRK repair.
I'd just like to say thanks for your help and Guidance Ed, without it, I
probably would have got there in the end but I would have not been as aware of
why and how I fixed it.
What I mean is, I
Theory behind Ytterbium-based optical lattice clocks have been mentioned
on this list before[1] but these results were new so I thought I'd share
them.
NIST released a paper[2] (link to PDF[3] on the right side on arxiv) a
week ago on results from two optical lattice clocks[4] with impressive
Just remember a lot of the Ytterbium comes from Australia, Jay ;)
According to Wikipedia, The optical clock based on it is exact to 17 digits
after the decimal point!
I hope that doesn't mean it is time to trade my HP 5370B in shortly...
How do they measure down to these resolutions?
A retraction, it was not necessary to run efc_comp to get the table to fill.
I know because one of the banana plugs that doesn't fit properly,
that was going from the bench supply to the Z3815A fell out today during bench
clean-up.
Alas, the efc table was empty on restart.
However, no
On 5/30/2013 1:24 AM, Mark C. Stephens wrote:
Ed, et al,
I was just cleaning up the workbench and this gave me time to reflect of the
FRK repair.
I'd just like to say thanks for your help and Guidance Ed, without it, I
probably would have got there in the end but I would have not been as
Hi Ed, Just an update, I replaced the Triac (a 2N6343, no less) with a garden
variety I had in my spares.
I checked most of the active and passive components and it all checked out.
I mean this is one simple PSU - using a 555 timer as oscillator...
Anyway, with bated breath I plugged it in.
According to Wikipedia, The optical clock based on it is exact to 17 digits
after the decimal point!
I hope that doesn't mean it is time to trade my HP 5370B in shortly...
How do they measure down to these resolutions?
Short answer: instead of a few GHz (Cs clock or H-maser), go to 500 THz or
Hi Chuck:
The Western Union Self Winding Clock Co. clocks that were used in radio stations had second hands, unlike the prior
clocks that were used in banks, railroad stations, etc. that only had hour and minute hands.
See figures 4 and 6 at the top of the page:
On Mon, May 27, 2013 10:56 am, Miguel Barbosa Gonçalves wrote:
[...]
On 27 May 2013 14:56, Bob Camp li...@rtty.us wrote:
[...]
Also correct, but a bit of a joke answer:
Raspberry PI driving your television set. Alternatively make the Pi
feed
control signals to a hacked normal clock.
Good
http://mobile.reuters.com/article/idUSBRE94T0MO20130530?irpc=932
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
So, probably means that it is 'flashing', on and off. :^).
Joe
So, it's been sitting there for a couple of hours before the Lock LED came
on.
Interestingly enough, I woke up (its 3am here) and I thought, Hmm wonder if
its locked.
I walked down stairs to the workshop and looked at the front
Oh No, it stayed locked, I sat there until 4:30am watching it..
But it's still drifting +/- 2 Hz 8 hours later which annoys me so much!
I will take a page from Ed's book and exercise patience, I guess.
Not much else I can do without disturbing its natural course.
-marki
-Original
13 matches
Mail list logo
