Allow me to suggest my own web site:-

http://www.illustratingshadows.com/

I have many free articles and books for download. In particular "Supplemental 
Shadows" gets into some math for gnomonics, as does "Programming Shadows" for 
those interested in programming. "Simple Shadows" has simple derivations also. 
And those, plus all my software source is free.

Other excellent websites also exist.

Simon

Simon Wheaton-Smith
www.illustratingshadows.com
Phoenix, Arizona, W112.1 N33.5


>________________________________
> From: cerculdestele . <cerculdest...@gmail.com>
>To: sundial@uni-koeln.de 
>Sent: Thursday, June 5, 2014 12:47 PM
>Subject: Sundial math
>  
>
>
>A friend who is a physicist and a total newbie to sundials inquired about a 
>mathematical introduction to gnomonics. Any sugestions?
>
>
>
>Dan 
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