Hi!
I'm interested in finding new stardials, nocturlabs and sundials to sell.
I am looking for the portable or wearable kind. I currently offer a
large variety for sale, but am always looking out to find even more. Any
suggestions?? I can import from anywhere and currently do from several
Dear Bob Terwilliger,
There are severals books from a German author about this subject. The
Sundial is also called "Bauren-Compass" or in English "Farmers compass". It
is also described by Sebastin Muenster.
Author:Koebel, Jakob
Title: Eyn kuenstliche sonn Uhr in eynes yeden menschen Lincken ha
With apologies to the author:
In summer's time, observe this rule:
Turn your back to the sun.
But if, when winter's time is here,
You might stand tall, and turn
Your countenance toward the sun,
You'll want to hear what is below.
It is correct to fifteen minutes,
A
I've got an extra copy of Hydrographic Office publication HO-260,
"Azimuths of the Sun", 1964 reprint. Older editions were HO-71.
For $5.00 I'll mail it anywhere in the US.
Hello Arthur .
In the last cloudy weekend I' ve studied also the inverse problem :
given a hyperbola or at least 5 points find the foci and asymptotes.
I've got a simple solution in the particular case that among these points
there is a vertex .
The solution is based on this nice theorem valid f
Bob Terwilliger wrote:
>
> Dear Friends,
>
> If you are not familiar with the book "Die Uhr" by Anton Lubeke, it is a
> very interesting resource for dialists. The first 70 pages are devoted to
> sundials, and include many illustrations of sundials - a remarkable number
> of which are unusual or
