Togeher with the message by Roger Baily about an English translation of
Sacrobosco's text we have more sources that say that at least there is a
timesystem in history based on the rise of 15 degrees of the elcliptic, no
matter what name is used for it.
I hope to hear about more sources.
Mario,
This is just the feeling I had, now already 15 years ago, based on the note
by Drecker.
At that time I wrote some thoughts about this in the bulletin of De
Zonnewijzerkring. (January 1992).
With this thread on the Sundiallist we have some other historical sources
that such a timesytem
Dear Sundialers,
Thanks to a number of you good folks inputs on methods of retreiving patents,
here is a
tinyurl address for the first page of Russell Porter's patent on the Reflecting
Telescope.
http://tinyurl.com/23w6gy
If you do not see the first page of the patent with it's drawing you
In the polyester family of products, the printing industry uses a variety of
types known for their linear stability under tension, pressure and heat.
Here is one source that I googled under photopolymer plates. There may be
some inspired use here because of the imaging capability of these plates.
