Dear Kevin,
I was interested in your comments on EoT.
I agree that the kidney curve is not very
pretty. You would be happier if we could
go back to the year 1246 when the analemma
had mirror symmetry about its long axis.
This would tidy up the kidney a little!
You say...
...the master of all
During Darwin's famous voyage aboard the Beagle, Captain Fitzroy had
22 chronometers aboard, no doubt to obtain accurate longitudes. This
seems pretty excessive and I'm wondering how many (or few) chronometers
would have reduced his time errors to an acceptable level. Any thoughts?
Poisson
Fitzroy was the geek of his time - he was rich enough to own 22 chronometers
and he was interested in everything - (especially meteorology - hence the
Shipping weather forecast zone called after his name and the Fitzroy Storm
Glass) A 'normal' naval ship in those days carried three chronometers
Dear Frank,
To add to Kevin's reply I have a contact at Greenwich Observatory who replied
to my amazement that there were that many chronometers on board, and said:
Dear Doug,
Yes there were that many, not all were government, if I remember properly 5
were Fitzroy's own, 2 were loaned by
On Thursday, June 23, 2011 9:33 AM, Frank Kingfrank.k...@cl.cam.ac.uk,
commenting on Kevin Karney's ke...@karney.com posting, said
...the master of all mechanical EoT
generators must be the device in the
Strassburg cathedral clock.
You overlook the mechanism in the
Jens Olsen World Clock
Beautiful shapes and history.
My E o T diagram:
https://picasaweb.google.com/mgarrando/ECUACIONDETIEMPO?authkey=Gv1sRgCIDLsd
zsp52i_AE#5621470247522825746
Best wishes
Miguel A. G. Arrando
attachment: winmail.dat---
I do not know the answer to this question:
Looking at the intersections of the EoT and Mean Time curves in M.
Garcia's diagram, is there any reason to conclude that the area of the
intersections outside the mean time curve must equal the area of the
intersections inside the mean time curve?
Dear Chris,
As always, you prompt further thought...
Gears, although limited to an integral number
of teeth, are essentially analogue devices,
aren't they?
Er, not sure :-)
In earlier days, I spent many a happy hour
looking at clocks and counting teeth. That
felt like a digital experience
Hi Miguel,
I keep getting an error message (404 Bad_Request) from picasa :^(
best wishes,
Peter
On 24/06/2011 02:57, Miguel A. Garcia wrote:
https://picasaweb.google.com/mgarrando/ECUACIONDETIEMPO?authkey=Gv1sRgCIDLsd
zsp52i_AE#5621470247522825746
--
--
Peter
Hi Miguel,
I've just succeeded! The URL works with Internet Explorer, but not
with Firefox.
A very useful and visually striking version of the EoT. Thank you.
Peter
On 24/06/2011 02:57, Miguel A. Garcia wrote:
Beautiful shapes and history.
My E o T diagram:
Good afternoon Frank,
Although I failed statistics as an undergraduate, I later became fairly good
at it when I was involved in research. My memory seems to recall that the
minimum number of samples for a reasonable approximation of a normal
distribution was in the low twenties. But as I
Hi Peter,
I copied and pasted the link into my web browser. But make sure you also
copy/past the 2nd line.
Roderick.
-Original Message-
From: Peter Mayer
Sent: Friday, June 24, 2011 10:37 AM
To: Miguel A. Garcia
Cc: sundial@uni-koeln.de
Subject: Re: E o T diagram
Hi Miguel,
I
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