Re: Fw: Leap Second Quiz Question

[Richard Langley]

?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


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| 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.=http%3a%2f%2fwww.fredericton.ca%2f>
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From: Patrick Vyvyan <patrickvyv...@gmail.com>
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
Corporación Cultural de Putaendo
[http://banners.wunderground.com/cgi-bin/banner/ban/wxBanner?bannertype=wxstnsticker_both=IVALPARA7]

On 1 January 2017 at 10:17, Richard Langley <l...@unb.ca<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<tel:%2B1%20506%20453-5142>   |
| University of New Brunswick   Fax:  +1 506 
453-4943<tel:%2B1%20506%20453-4943>   |
| Fredericton, N.B., Canada  E3B 5A3|
|Fredericton?  Where's that?  See: http://www.fredericton.ca/   |
-


From: sundial 
<sundial-boun...@uni-koeln.de<mailto:sundial-boun...@uni-koeln.de>> on behalf 
of Frank King <f...@cl.cam.ac.uk<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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Fw: Leap Second Quiz Question

[Richard Langley]

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 |
| 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  on behalf of Frank King 

Sent: Sunday, January 1, 2017 8:30 AM
To: 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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