Simon,
Have a look at the small picture I posted.
Because it is a declining sundial the footpoint of the gnomon is near the
winter solstice line.
The equinox line is a strange one. That line hould be straight.
Best, Fer.
Fer J. de Vries
De Zonnewijzerkring
mailto:[EMAIL PROTECTED]
http://www.de-zonnewijzerkring.nl
Eindhoven, Netherlands
lat. 51:30 N long. 5:30 E
----- Original Message -----
From: "Simon [illustratingshadows" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; <[email protected]>
Sent: Friday, June 30, 2006 8:32 PM
Subject: Re: R: Re: Is this a sundial?
I still have a problem with the gnomon. This is a rod
perpendicular to the wall, and yet it resides on the
"winter solstice curve". Where it resides will be an
equinox line, not a solstice curve. So, inspired by a
vertical great decliner it may be. A vertical decliner
it ain't, except possibly for the summer solstice, and
the kids will be on vacation at that time anyway.
Simon
--- "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
wrote:
The hypothesis of Fer is completely correct !!
In the hurry I have
made a mistake thinking to a wall facing South :-(
Gianni Ferrari
>----Messaggio originale----
>Da: [EMAIL PROTECTED]
>Data:
30-giu-2006 14.36
>A: "Robert Terwilliger"<[EMAIL PROTECTED]>,
"Sundial Mailing List"<[email protected]>
>Ogg: Re: Is this a
sundial?
>
>Two Italian answers with:
>"yes", it is a sundial
>"no",
it isn't a sundial.
>
>It is easy to draw a pattern of the solstice
lines for a dial.
>I did that for a vertical dial, 45 degrees
declining
from south to east at latitude 45 degrees.
>The result is seen here.
>It looks rather well to the pattern showed on thew
website.
>
>Perhaps
there is no time reading but a dial with e.g. only
datelines still is a
sundial.
>
>
>
>Best wishes,
>
>Fer J. de Vries
>
>De Zonnewijzerkring
>mailto:[EMAIL PROTECTED]
>http://www.de-zonnewijzerkring.nl
>
>Eindhoven, Netherlands
>lat. 51:30 N long. 5:30 E
>
> -----
Original Message -----
> From: Robert Terwilliger
> To: 'Sundial
Mailing List'
> Sent: Friday, June 30, 2006 3:37 AM
> Subject: Is
this a sundial?
>
>
> The "sundial" in this photo was submitted to the
NASS Register.
>
> Do you think it's a sundial? How would it work?
>
> http://sundials.org/test/york.htm
>
> Bob
>
>
------------------------------------------------------------------------------
>
>
>
---------------------------------------------------
> https:
//lists.uni-koeln.de/mailman/listinfo/sundial
>
>---------------------------------------------------
>https://lists.uni-
koeln.de/mailman/listinfo/sundial
>
>
---------------------------------------------------
https://lists.uni-koeln.de/mailman/listinfo/sundial
---------------------------------------------------
https://lists.uni-koeln.de/mailman/listinfo/sundial
---------------------------------------------------
https://lists.uni-koeln.de/mailman/listinfo/sundial
