Dear Anselmo and all,
> You can see one of these conical gnomon sundials in the web page of the
> city of Gent in Belgium. This is a clever and elegant design, and very
> easy to put into practice.
I assume you mean the sundial park in Genk (some 130 km east
of Gent). The Genk site can be found
Dear Anselmo,
>
> We all know that we need just two points to draw a stright line (like the
> solar time ones), five points to draw an hyperbola (like the datelines)
> but...
Theoretically speaking, the hyperbola is a second-degree curve.
Therefore three points should completely define its shap
Dear John and all,
My rule-of-thumb for the choice of a compressed graphics format is:
Photos (characterized by hue and intensity gradients): use JPG.
Drawings (characterized by patches of constant hue and intensity):
use GIF.
When in doubt, I sometimes compare both options.
For ***CAD drawing
Hi John & All,
Thank you for the fabulous pictures of this very special instrument.
I have put a webpage together about it and hope you enjoy it:
www.biol.rug.nl/maes/sundials/
Scroll down the main menu and choose "Sundials ??"
In the page at right, click the "Fossil" thumbnail in the bottom ro
Dear John,
One possibility to 'repair' the flaw in the Flandrau analemmatic dial is to
remove (or ignore) the analemma and repaint the meridian line. This would
restore it into a 'classical' analemmatic dial.
A second option is to quit the classical analemmatic principle and instead
construct
Hi all,
That is (was!) quite an impressive sphere, at:
http://www.morningside-heights.net/sundial.htm
Does anyone know how it works?
I wonder how the dial face is laid out.
Regards, Frans
> From: Ian Fletcher <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Tuesday, April 02, 2002 3:22
Hi John & all,
And don't miss the motto on their homepage:
"... our sole motto is Quality in Time."
Frans
Date sent: Sat, 13 Apr 2002 08:19:54 -0700
From: "John Carmichael" <[EMAIL PROTECTED]>
Send reply to: sundial@rrz.uni-koeln.de
Subject:
Dear John & All,
Sorry for jumping in so late. I'm a little busy right now, but gave
John's question and the responses a quick look.
I think you should NOT correct the latitude by the slope. The minor
axis would get longer and the date line would get shorter when
moving north (or the other wa
Can we hear any details? Horizontal, equatorial,
analemmatic? Anything you like to share with us...
Thanks, Frans
On Sun, 2 Mar 03 00:02:26 +
Tony Moss <[EMAIL PROTECTED]> wrote:
Fellow Shadow Watchers
A new sundial to mark 75 years of
service to the
community,
