be measured with a
simple sundial with an error of less than 1%. You just need much patience...
Sometimes it takes several hunderd measurements ( = some years of daily
observations).
Jos Kint
De Pinte, Belgium
From: Thibaud Taudin Chabot
Sent: Monday, January 15, 2018 12:19 PM
To: Sundial
Dear Roger,
Also my congratulations with your NASS Sawwyer Dialing price! Is this a good
question: “Is it possible to calculate with a normal sundial if the current
year is a leap year?”
Jos Kint, De Pinte, Flanders, Belgium
From: Gianni
Sent: Saturday, July 30, 2016 1:44 PM
To: Roger
languages eight and night sound so
similar? Might there be some connection with time keeping in the old days?
Jos Kint, Belgium
---
https://lists.uni-koeln.de/mailman/listinfo/sundial
Has anyone an idea how to use a sundial for calculating if the current year is
a leap year? And, if not, how many years we are behind the next leap year?
Jos Kint, 50°59’ N ; 3°39’E ---
https://lists.uni-koeln.de/mailman/listinfo/sundial
of the earth's axis changed over time.
For more details: read the remarkable book of Heilbron: The sun in the
church.
Jos Kint
50°59'N 3°39'E
- Original Message -
From: Richard
To: sundial@uni-koeln.de
Sent: Friday, May 04, 2012 8:36 PM
Subject: Meridian in Siena, Florence
of the length of the seasons, to be
found by observing the daily sun declination. From the analemma you might find
easily the EoT and then - by using the formulas in our article- you might find
the eccentricity.
Jos Kint
- Original Message -
From: Keith E. Brandt, WD9GET
To: sundial
Sent
The gnomon point of my sun dial is also very thin. In order to observe the
shadow point as exactly as possible, I use an old and simple trick: by
touching the gnomon-point with one of my fingers, the semishadow almost
disappears
locally and I can better observe the exact location.
Jos Kint
50
Hi John,
You are right. This is one of the many paradoxes of science: we kan predict
what is happening millions of kilometers from here but not what is happening
just ten kilometers above our heads.
Jos Kint
50°59N; 3°39E
- Original Message -
From: Brad Lufkin
To: John
year cycle between leap years. Who
has ever done this?
Jos Kint
50°59' N
3°39' E---
https://lists.uni-koeln.de/mailman/listinfo/sundial
:09' hour
Off course, these are mean values of the error. The individual observations
were often less precise.
It was a fascinating job. And it is still going on.
Jos Kint
50°59'N
3°39'E---
https://lists.uni-koeln.de/mailman/listinfo/sundial
. The moment of the aphelion
17. The moment of the next sun set
18. The Babylonic time
19. The Italian time
Jos Kint
---
https://lists.uni-koeln.de/mailman/listinfo/sundial
Just amazing! I propose to call it: a Sun Toyal
Jos Kint
- Original Message -
From: sundial-requ...@uni-koeln.de
To: sundial@uni-koeln.de
Sent: Thursday, April 29, 2010 12:00 PM
Subject: sundial Digest, Vol 52, Issue 32
Send sundial mailing list submissions to
sundial@uni-koeln.de
Hello Roger Bailey,
According to the United States Naval Observatory (
http://aa.usno.navy.mil/data/docs/EarthSeasons.php) the 2009 equinox falls on
sept 22 at 21:18:00 UT. This is 61 minutes different from your value. Who is
right?
Jos Kint
Eeuwfeestlaan 38
9840 De Pinte
Tel: 09.282.57.61
model, which was
rather effective ( I found e= 0,0172 instead of 0,0167) , but I think that
there must be also some algebraic solution to the problem. Who is aware of such
a solution?
Jos Kint
Email: jos.k...@skynet.be---
https://lists.uni
Hello sun dialists,
I have a question. As I said some months ago I want to calculate the earth's
orbital eccentricity, using my sun dial. I tried it in two ways. First I
followed the suggestion of Chris Lusby Taylor and used the Ptolemy model after
finding aproximate values for the vernal
statistician and
astronomer. He did so in order to synchronise the time in Antwerp and
Brussels for the recent railway connection between both cities. By the
discovery of the telegraph in 1839 they became obsolete. But you can still
admire these sundials with the meridian lines in both cathedrals.
Jos
Dear Dr Articolo,
In the website from the yearly Chelsea flower show :
http://www.chelsea-flower-show.com/sundials.html everybody can see and
conclude that sundials and flowers need one another.
Jos Kint
---
https://lists.uni-koeln.de/mailman
Hello all,
I am looking for some help in observing the earth's orbital eccentricity, just
by using my sun dial. Who gives me some hint? With my vertical 2,5 meter by 1,5
meter sun dial I can measure the local solar time with an accuracy of less
than 60 seconds.
Jos Kint, Belgium
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