?Yes, perhaps 0.5 seconds is it. Last Sunday it was 0.5 seconds fast and Frank
did something with the coins to change its rate. This Sunday it is 1 second
fast, discounting the leap second. So, the clock gained an additional 0.5
seconds in the week. Did I get it right this time? More/fewer coins needed? ;-)
-- Richard Langley
-
| Richard B. LangleyE-mail: l...@unb.ca |
| Geodetic Research Laboratory Web:
http://gge.unb.ca<http://gge.unb.ca/> |
| Dept. of Geodesy and Geomatics EngineeringPhone:+1 506 453-5142 |
| University of New Brunswick Fax: +1 506 453-4943 |
| Fredericton, N.B., Canada E3B 5A3|
|Fredericton? Where's that? See:
http://www.fredericton.ca/<https://unbmail.unb.ca/owa/redir.aspx?C=tVxi5OaRXE2jUmSNTu0wE7USusV6L9AIh-TKOqhq1DE--EjKeq-SUal8Myg-FGJn53Gm890SFIc.&URL=http%3a%2f%2fwww.fredericton.ca%2f>
|
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From: Patrick Vyvyan
Sent: Sunday, January 1, 2017 9:54 AM
To: Richard Langley
Subject: Re: Fw: Leap Second Quiz Question
0.5 seconds for me!
It's not exactly the fault of your clock's mechanism that due to the foibles of
the IERS, the rules of the game have been changed. Every time a government
decides to apply or remove DST, for example, I doubt you would say the clock
had gained or lost 60 minutes?
Patrick Vyvyan
Presidente
CorporaciĆ³n Cultural de Putaendo
[http://banners.wunderground.com/cgi-bin/banner/ban/wxBanner?bannertype=wxstnsticker_both&weatherstationcount=IVALPARA7]
On 1 January 2017 at 10:17, Richard Langley mailto:l...@unb.ca>>
wrote:
1.5 seconds? The clock is two seconds fast this morning due to its natural rate
and the leap second. By the way, did anyone catch the seven pips live on BBC
Radio 4 last night? Using the BBC's "listen again" feature, none of the other
BBC radio stations carried the pips at midnight; they all (or mostly all) used
Big Ben. And the listen again feature for Radio 4 just before midnight is a
repeat of an earlier program when they announce the time as 5 p.m.!
-- Richard Langley
-
| Richard B. LangleyE-mail:
l...@unb.ca<mailto:l...@unb.ca> |
| Geodetic Research Laboratory Web: http://gge.unb.ca |
| Dept. of Geodesy and Geomatics EngineeringPhone:+1 506
453-5142 |
| University of New Brunswick Fax: +1 506
453-4943 |
| Fredericton, N.B., Canada E3B 5A3|
|Fredericton? Where's that? See: http://www.fredericton.ca/ |
-
From: sundial
mailto:sundial-boun...@uni-koeln.de>> on behalf
of Frank King mailto:f...@cl.cam.ac.uk>>
Sent: Sunday, January 1, 2017 8:30 AM
To: sundial@uni-koeln.de<mailto:sundial@uni-koeln.de>
Subject: Leap Second Quiz Question
Dear All,
I hope you all enjoyed the extra second
in bed this morning and that your alarm
clock didn't go off one second early.
Here is an easy question to start off
the New Year...
Every Sunday at 08:00 I check the first
stroke of the hour-bell of the University
Clock against a radio-controlled UTC clock.
If it is slow I add coins to the tray on
the pendulum. If it is fast I remove
coins. My formula for the required
adjustment includes a figure for:
Last Week's Gain [LWG]
Here are my recent observations:
25 December clock 0.5 seconds fast
1 Januaryclock 2.0 seconds fast
Is the appropriate figure for LWG:
a) 0.5 seconds
b) 1.5 seconds
c) 2.5 seconds
Frank
Frank H. King
Keeper of the University Clock
Cambridge, U.K.
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