Mr. Douglas Hunt wrote
> In the almost 20 years that we have been running this business (comprising
> many tens of thousands of customers worldwide).
That is a truly amazing statistic. Can there be anyone else in the
history of dialling who is, or was, anywhere near so prolific?
"Many tens of
Failing a drawing clearly showing the date line of the sundial at the School
in Lafayette (Louisiana, USA) I tried to reproduce it by comparing the regular
division of the red blocks on the photograph with the dividing-lines of the
months. This attempt failed because I see only six months or part
Hi Doug
I infered wrongly. I assumed that you must have had a complaint about a
single DLS timescale since you have this policy. I apologize. The photograph
of the Lousiana school analemmatic is so small that it is impossible for me
to read the date line. I can imagine how it could function corre
I struck me as very odd that the Standard Time ellipse has much larger radii
than the smaller Daylight Saving Time ellipse, yet both ellipses use the
same dateline. (I was going to ask Roger Bailey and Fer about it). From my
limited knowledge of analemmatics, I think this design will not functi
On Tue 3 Sep 2002 (08:28:39), [EMAIL PROTECTED] wrote:
> From my limited knowledge of analemmatics, I think this design will not
> function correctly because if you change the size of the ellipse, you
> must also change the size of the dateline. This could explain why
> you've had complaints a
Hi John,
Your observation is correct that the hour points and date line scale with
the ellipse size. For a dial with semi-diameter "a", the (x,y) coordinates
of the hour points are (a Sin t, a Cos t Sin L) and the date line points are
(0, a Cos L, Tan D).
There is however a clever way to use two
Hi Doug
A comment you made in your letter about Daylight Time scales on analemmatic
dials was intriguing because just last week I was looking at the beautiful
analemmatic dial in Louisiana on the Sunclock website picture gallery.
http://www.argonet.co.uk/education/sunclocks/info/select.htm
I s
Does anyone know whether there are members of this "Sundial Mailing List",
in Turkey (Istanbul area) - or maybe sundial enthusiasts, in that region ?
We have been contacted by a person, who wants to install a 'Human Sundial'
(or large-scale 'analemmatic' dial), in the Uskudar part of Istanbul -
