Dear Colleagues,
I am trying to make contact with the French diallist Denis Schneider and the
email address I have been given doesn't work. Does anyone have an up-to-date
address, please?
Regards,
John
---
Dr J Davis
Flowton
Dear Dialling Friends,
I have just visited our local garden centre and they had a large quantity of
'Gazing Balls' on sale. These are 8 / 20cm diameter stainless steel spheres
with no obvious seams or stalks, and with a mirror finish. They MUST be of use
to many of you for dialling, for making
What a pity that the balls have a mirror finish.
On a mirror you cannot see a shadow.
Willy LEENDERS
Hasselt in Flanders (Belgium)
Visit my website on the sundials in the province of Limburg in Flanders
(Belgium) and on worthwhile facts about sundials
www.wijzerweb.be
Op 11-aug-2010, om
Hello John,
Here is his email address: schneiderde...@wanadoo.fr
Best receipt
Yvon Massé
- Message d'origine -
De : JOHN DAVIS john.davi...@btopenworld.com
À : sund...@rrz.uni-koeln.de
Envoyé : mercredi 11 août 2010 10:57
Objet : Denis Schneider
Dear Colleagues,
I am trying to make
There have been several articles in the BSS Bulletin and the NASS
compendium about spherical gnomons. In BSS Bulletin 19.1 (March 2007)
Chris Lusby Taylor wrote about how the sphere is a precise gnomon for a
hours-to-sunset and hours-from-sunrise dial, because it is a special
case for the more
You can always paint the outside, if it will stick properly to the stainless. I
just thought that large balls at this price were a bargain! I have since looked
on the Internet and there seem to be many of these available.
What a pity that the balls have a mirror finish.
On a mirror you
Dear John, Fabio and All.
I am involved in sundial preservation for many years and, personally, I am
not enthusiastic with the rising interest on sundials as a GPS photo
tourist attraction.
Old sundials are precious historical items in serious danger to disappear
and, first than anything,
When a mirrored sphere is viewed or photographed from a sufficient distance,
the
size of the distorted image of objects reflected will be proportional to the
solid angle that they subtend at the centre of the sphere. In terms of
cartography, the reflection is an equal-area projection. This
Hi all
I draw the first sphere gnomon some years ago (the first was the frog in 2002)
and I've an old project I've never realized.
It need a lot of spheres and if they are cheap is a good point.
Usually the sphere may be imagined in a virtual cone with a vertex angle the
double of the latitude.
From: Hal Brandmaier
Sent: Wednesday, August 11, 2010 9:36 AM
To: Mike Cowham
Subject: Re: Stainless Steel Spheres
Mike
I have recently concentrated on horizontal sundials using spheres as gnomons.
My initial results were published in NASS' Compendium, Volume 15, Number 3,
Dear Friends,
I wish to inform you about the newly born Contemporary International
Bibliographical Fund of Gnomonics. This Fund is born to fulfil the desire of
one of our members to save his big book collection of gnomonics.
At the beginning, we thought to create a project with the name of
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