I'll check it out. I suspect that there's no way that the declination-lines
for a Horizontal Dial can be anything like as brief as that for the Polar
and Tube Dials, because the horizontal surface, though convenient for
building the dial, lacks any of the orientation-convenience of the Polar
and Tube Dials.
47 F
November 15th
1714 UTC
On Fri, Nov 15, 2019 at 11:33 AM Simon Wheaton Smith <
illustratingshad...@gmail.com> wrote:
> My book, Illustrating Time's Shadow, is now free on..
>
> www.illustratingshadows.com
>
> And covers hDial declination lines, and several ways of drawing them.
>
> Simon
>
>
> On Fri, Nov 15, 2019, 07:49 Michael Ossipoff wrote:
>
>>
>> Is there an easy explanation/derivation for the solar-declination lines
>> on a Horizontal-Dial? I mean, easiness comparable to that of the
>> declination-lines for a Polar-Dial or a Tube-Dial (Circumference-Aperature
>> Cylindrical-Equatorial Dial)?
>> .
>> The explanation for the Horizontal-Dial's hour-lines is brief enough, but
>> its declination-lines seem to need a considerably longer explanation.
>> .
>> I ask that because, to offer or suggest a sundial or map-projection, or
>> to set up a sundial for others, I prefer one that's easy to explain. It
>> seems to me that people would like something better if it can be explained
>> to them, preferably without their having to listen to an long explanation.
>> .
>> Week 47, Friday
>> November 15th
>> 1450 UTC
>> .
>> Michael Ossipoff
>> ---
>> https://lists.uni-koeln.de/mailman/listinfo/sundial
>>
>>
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