Dear Gianni,
Your analysis has silenced the Lista Inglese!
I will summarise what you said so that new
readers may start here...
You have:
D = length of day (sunrise to sunset)
Whenever D is an integer number of hours, the
associated constant-declination curve passes
through a hyperbolic
Dear Roger,
You are right...
This gets more interesting with each note.
The business of labelling gnomonic features
elegantly can be a nightmare!
With an ordinary sundial you have a chapter
ring of one kind or another for the labels of
the hour-lines and life is straightforward!
When you try
Chris Lusby Taylor,
has very kindly written me that in my first Email *“How trace the italic
hour lines” *I have made an error: it’s true!
The error is serious enough and I thank Chris and apologize to all L
I wrote
*Also for each point of the line of horizon (on the sundial) pass one
Sorry , I forgot the table :-)
Gianni F.
TabOre.pdf
Description: Adobe PDF document
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My responses are interspersed below.
--
From: Frank King frank.k...@cl.cam.ac.uk
Sent: Friday, April 02, 2010 10:18 AM
To: Roger Bailey rtbai...@telus.net
Cc: Gianni Ferrari gfme...@gmail.com; Frank King
frank.k...@cl.cam.ac.uk; LISTA INGLESE
