This question takes me back to when David Brown was creating an analemmatic
dial for my young children's school. I advised that I thought it was too
big, as they were small children. In the event, the dial is usable except
for a small time daily in summer.
As you say, the worst case is noon at mi
-Bill
In a message dated 4/8/2005 2:28:14 AM Eastern Standard Time, [EMAIL PROTECTED] writes:
As you all know, for latitudes about 40 deg, the least longitude
of the style equals more or less the major semiaxis of the ellipse
so that the shadow can reach the ellipse on the worst case, this is,
Hi Anselmo and All,
When I needed an answer to this question, I developed a spreadsheet to
calculate and chart the path of the gnomon's shadow through the day and the
seasons. The input variables are location size, gnomon height and solar
declination. I gave the results at a NASS conference with
Hi Anselmo & all,
In my webpage www.fransmaes.nl/sundials/ - "Analemmatic" - "extra info" -
"The human scale", I calculated the shadow paths for a 2 meter gnomon (human
with hands above head) in dials of 6 and 10 meter major axis, for latitudes
of 35, 45 and 55 deg.
I find it no problem to exten
-Bill
In a message dated 4/9/2005 11:58:53 AM Eastern Standard Time, [EMAIL PROTECTED] writes:
Hi Anselmo &all,
In my webpage www.fransmaes.nl/sundials/ - "Analemmatic" - "extra info" -
"The human scale", I calculated the shadow paths for a 2 meter gnomon (human
with hands above head) in dials
Anselmo requestd,
>
>Now my doubts lie in materials: I have been talking to people hwo knows about
>road construction and things like these and every one of them tells me a
>different
>thing about laying the numbers and the decorations. Any suggestion from you?
Ably assisted by Graham Aldred we
t
initiated by the Lions Club. We are looking for better resolution photos and
more information on this beautiful dial.
- Original Message -
From: "tony moss" <[EMAIL PROTECTED]>
To: "Sundial Mail List"
Sent: Sunday, April 10, 2005 2:04 AM
Subject: Re: On the gr
I have two suggestions:
1.
The direction of the numbers.
For esthetical reasons I place the nummbers of an analemmatic sundial by
preference perpendicular to the ellipse curve.
An easy manner to do it: connect the hour points left and right of the number
to be placed with a line and place the n
Dear All,
I have been following this analemmatic thread with
particular interest since I have recently been giving
advice to a Swedish stone-cutter who wants to set a
dial out in her garden. She lives on the cold side
of 60 degrees north.
I especially noted:
> I have been talking to people who
Frank King Wrote,
>Can some U.S. reader who knows all about cold
>winters kindly let this temperate Brit know what is
>likely to be found underneath this dial? Is there
>really 1200mm of hard-core and elaborate drainage?
The pedestal of the Longyearbyen dial at 87° north is supported what seems
On Mon, 11 Apr 2005, tony moss wrote:
>Frank King Wrote,
>
>>Can some U.S. reader who knows all about cold
>>winters kindly let this temperate Brit know what is
>>likely to be found underneath this dial? Is there
>>really 1200mm of hard-core and elaborate drainage?
>
>The pedestal of the Longyea
I have tried two different mosaic methods (i) the standard "amateur"
direct method given in textbooks of siliconing vitreous glass tiles
onto an existing slab and then beating in mortar grout; and (ii) using
the reverse method, beating in a thin grout layer and then casting a
slab on top.
Dear All,
Many thanks to Tony Moss and Brian Albinson for the most
erudite comments so far...
Tony: I vaguely recall the constructions techniques used in
Spitsbergen, namely very deep piles as you note. Here, of
course, there is permafrost and one can rely on the ground
being permanently frozen
Hi Anselmo,
Have you considered a couple of modern innovations, seasonal markers and
split analemmas? The seasonal markers show where and when the sun rises and
sets through the year. These would work well at your latitude. The split
analemmatic dial has separate ellipses for morning and afternoo
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