Fred and Helmut,
thanks for your replies. I will look into the patent this weekend in detail.
Quick reply to Hemlut's remark: I think that sunrays will be always
orthogonal to the axis of the gnomon (it's just parallel to the
earth's axis), but it needs some maths (after describing the analemma
(Tele2) [EMAIL PROTECTED]; Fred Sawyer
[EMAIL PROTECTED]; [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Thursday, September 25, 2008 11:49 AM
Subject: Re: Bernhardt's gnomons
Fred and Helmut,
thanks for your replies. I will look into the patent this weekend in
detail.
Quick reply to Hemlut's
Great, thanks. I contacted you privately. For sure I do not violate
any copyright.
Another thing that came to my mind: Perhaps someone has a copy of the
„Sky and Telescope of 1966, where Martin Bernhardt built his sundial
for some contest.
Thomas
Dear Dialists,
Five years ago I built a novel dial that goes a step further that
Bernhard's dial. I didn't yet have time to publish it properly because I
was extremely busy building the LHC here at CERN in Geneva - and as you
might have heard I will continue to be busy ...
I have finally put
Dear all,
I tried to collect information on Martin Bernhardt's special Gnomons
which takes into account the equation of time in a equatorial sundial
on a single scale to read off time, regardless of the date (almost -
once a year the gnomon has to be changed).
The idea is good and simple: just
Oliver tends to get a bit more credit than he perhaps deserves as the
inventor of this type of gnomon. See for example Lloyd Mifflin's U.S.
Patent 64892 (May, 1867) of an Equating Solar Chronometer - the key element
of which is the analemmic gnomon.
Fred Sawyer
On Wed, Sep 24, 2008 at 10:01
To see Mifflin's patent, go to:
http://www.google.com/patents?id=kX4AEBAJpg=PA4lpg=PA4dq=%22equating+solar+chronometer%22source=webots=V3YY1BCx8fsig=HZ2t_vudn-Iz-hFPPrWMJShOcMghl=ensa=Xoi=book_resultresnum=1ct=result#PPA3,M1
On Wed, Sep 24, 2008 at 10:01 AM, Thomas Steiner [EMAIL
, September 24, 2008 6:16 PM
Subject: Re: Bernhardt's gnomons
As I read, the gnomon by Berhard ('Berhadt-Walze') is a bit more
complicated than just the half analemma rotated. This, because the sun
rays
are not orthogonal to the axis of the Berhardt-Walze and therefore it
needs
some higher Maths
