You can create a 'projected' sundial by placing
the sundial pattern inside the opening. The
shadow of this pattern will move over the reading point on the floor.
See Nass compendium vol 1 nr 3 page 6. I designed
this type as a vandal proof dial, it is
transparant "projection type". No parts that can be broken or removed.
The pattern can be on a perspex pane placed
inside the parapet but you can also keep the
parapet open and create the pattern by placing
wires in the parapet to get the reuired pattern.
Thibaud
At 17:34 21-4-2020, Alon Gan wrote:
Dear dialist,
I have a 0.8x3.8 meter opening in a wall on the
roof (technically, a parapet, I believe) which
is facing west (5.6 degrees north of West,
actually). After much consideration I came to
the conclusion that I would like to have a faux
stained glass sundial (i.e., printed on a large
pane of glass) with gnomons on both sides of the
glass, one for showing morning times and the other for the afternoon.
(see attached image showing a very rough example
of what I have in mind). If it helps, I live at
<https://tools.wmflabs.org/geohack/geohack.php?pagename=Beit_Herut¶ms=32_22_40_N_34_52_8_E_type:city(904)_region:IL>32°22’40â″N
34°52’8 ³E.Â
Please see if you can help me with any one of the following questions:
1. Do you know of any example of such a dial I can study?
2. Due to the elongated dimensions, I think I
can include additional dials (e.g., direction of
the sun, etc.) - do you have any ideas?Â
3. I'm trying to decide between a regular
"linear" gnomon to a spherical gnomon/nodus on a
perpendicular rod rising from the cornice below. Any ideas?
4. Any interesting ways of including EoT data
(e.g., connecting to date using a nodus?)
And also for a technical question -
5. I use Shadows for the design (unless you have
other recommendations), I want to convert the
data to visio or any other free CAD editor and
after I design all the dials together, convert
it again to photoshop, for an artist to design
it graphically. Any thoughts on easy ways to do all of those conversions?
Thanks a lot!!!!
(You can also contact me privately at alongan(at)<http://gmail.com>gmail.com
Best, Alon Gan
.
example alon sundial.jpg
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