Dear Kevin,

Finally I got a printed copy of your wonderful book !
I knew a lot of material already from your WEB page, but it is great to have 
all the information with even more detail in the form of a book !
Excellent work !

best regards
Werner




On 12 Jul 2024, at 12:54, Kevin Karney via sundial <sundial@uni-koeln.de> wrote:

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From: Kevin Karney <kar...@me.com>
Subject: The Equation of Time - AEquatio Dierum
Date: 12 July 2024 at 12:54:40 CEST
To: Sundial <sundial@uni-koeln.de>


Dear Friends, fellow Gnomonists and Horologists,

At exactly Solar Noon on 12th May - my 80th birthday - I clicked my mouse to 
enable the publication of a book named….

The Equation of Time- Æquātiō Diērum
A Journal, a Reference & a Picture Book
This is the culmination of my interest in the subject, which has spanned some 
55 years.

The book contains 234 pages with over 600 charts and images in full colour.

It is now available in soft back at £28 from Lulu.com<http://lulu.com/> and 
Amazon or hardback £46 from Lulu.com<http://lulu.com/>.
Just search for 'Equation of Time'

Purchase of the book gives you access to a number of explanatory videos.
This is a not-for-profit publication. So if you feel you cannot afford the 
purchase price, please contact me. I will provide a link to a downloadable .pdf 
file and request a small donation to medicine sans frontières.

A low resolution image of the book cover is attached.

Table of Contents…..

  *   Part 1 - Equation of Time - General
     *   The Equation of Time in the History of Time Keeping
     *   Understanding the Equation of Time
     *   Calculating the Equation of Time
     *   The Analemma
     *   Variation in the Equation of Time
     *   The Equation of Time as Shown on Sundials (by John Davis)
     *   Early Days & Ptolemy’s Invention of the Equation of Time
     *   The Equation of Time in Astronomy & Navigation
     *   Displaying the Equation of Time
     *   EoT Incidentals
     *   Mechanically Generating the Equation of Time
  *   Part 2 - Pictures of and References for Equation Corrected Sundials
     *   Why Bother to Correct a Sundial
     *   Equiangular Sun Dials
     *   Moving Hour Lines  Sundials
     *   Moving Style Sundials
     *   Shaped Style Sundials
     *   Curved Hour Lines Sundials
     *   Linearly Equispaced Hour Line Dials
     *   Dials with Alidades
     *   Bifilar Dials and Other Esoterics
     *   Mechanically Corrected Sundials
  *   Part 3 - Equation Corrected Clocks
     *   Equation Clocks - Background
     *   Equation Clocks - Forerunners
     *   Equation Clocks - Cams
     *   Equation Clocks - Gears

  *   Appendices
     *   Basic Positional Solar Astronomy
     *   Code to do the Calculations
     *   An Unrealised Heliochronometer
     *   Reading List & Available Videos

Kevin Karney, Freedom Cottage, Llandogo, Monmouth NP25 4TP U.K..
Phone +44 1594 530 595 or +44 7595 024 960

<Book Cover (lo res).png>



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