Hi Helmut,
Ok about Willy’s sundial. I need to install SONNE onto my new Laptop compute
and see what it can do, thanks. I did have SONNE on my old computer. Willy’s
sundial is interesting, maybe make one from a drinking glass and paint the hour
lines using hobby glass paint.
Regard,
Roderick Wall.
From: Helmut Sonderegger (Tele2)
Sent: Tuesday, October 15, 2013 12:17 AM
To: sundial@uni-koeln.de
Hi Roderick,
I like Willys new sundial too. It looks beautifully.
I included this sundial construction a longer time ago in my software SONNE and
discussed different cylinder sundials in Compendium vol 16 nr. 4 (Dec 2009). In
my freeware Sonne.exe you can construct the sundial for the outside of a
cylinder with fixed orientation and moveable horizontal gnomon (see image
below). Now Willy has positioned the Gnomon in the central axis of the
cylinder and so the gnomon length is equal the radius and nee not be turned
around. The construction stays the same but the scale is positioned on the
Northern part of the vertical cylinder instead of South.
By the way: Woody Sulllivan made a very similar construction on the outer side
of a cone ( http://sundials.org/index.php/component/sundials/onedial/746 )
Helmut Sonderegger
www.helson.at
Am 14.10.2013 06:16, schrieb rodwall1...@gmail.com:
Hi Willy,
That’s a great idea, thanks for showing us. Maybe someone will include it in
their Sundial Software?
Roderick Wall.
From: Willy Leenders
Sent: Monday, October 14, 2013 5:36 AM
To: Sundial sundiallist
Dear sundialists,
I calculated a unique sundial on a cylindrical column of opal glass.
It is inaugurated in the vicinity of Brussels (Belgium).
The shadow of the sphere falls on the inside of the cylinder and can be seen
through the opalescent glass on the outside. There the shadow gives an
indication of the time and the date.
You can see more information specially translated for you in English on my
website on page http://www.wijzerweb.be/humbeek001AENGLISH.html
Willy Leenders
Hasselt in Flanders (Belgium)
Visit my website about the sundials in the province of Limburg (Flanders) with
a section 'worth knowing about sundials' (mostly in Dutch):
http://www.wijzerweb.be
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