Sundials: History, Theory, and Practice (Paperback)

~ Rene R.J. Rohr (Author)

Editorial Reviews

From Library Journal

First published in English in 1970, Rohr's volume traces a history of sundials as well as the science behind their operation. Along with measuring time, some of these devices also followed the movements of the moon and were accurate solar calendars. This is for both the lay reader and the scientist alike.
Copyright 1997 Reed Business Information, Inc.

Review

Among the earliest instruments for telling time was the sundial. Sundials: History, Theory, And Practice is an expert study offering a fascinating and informative account of these ancient devices, presented in simple, lively language and with a profusion of illustrations. Sundials will teach the reader a practical method for building one! For mathematically inclined readers, more complex formulae and calculations have been included, some of which have never before been printed in a book of gnomonics. Sundials is unusual, fascinating, and highly informative! -- Midwest Book Review

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Product Details

• Paperback: 176 pages
• Publisher: Dover Publications (July 9, 1996)
• Language: English
• ISBN-10: 0486291391
• ISBN-13: 978-0486291390
• Product Dimensions: 11.2 x 8 x 0.4 inches
• Shipping Weight: 1 pounds (View shipping rates and policies)
• Average Customer Review: 3.0 out of 5 stars  See all reviews (2 customer reviews)
• Amazon.com Sales Rank: #481,975 in Books (See Bestsellers in Books)

Customer Reviews

Most Helpful Customer Reviews

15 of 15 people found the following review helpful:

2.0 out of 5 stars Not the best sundial book available, March 18, 2002

By	Alex (Melbourne Australia) - See all my reviews

I found Rohr not to be as useful as the two other texts by Waugh or Mayall and Mayall. The other books are more clear and practical in the constructions of many different types of dials.

The only strength of the Rohr test is the explanation of (i) drawing hour lines on any surface so long as you have a rod shaped gnomen and (ii) the construction of babylonian and Italian hours. Even so the explanation of the babylonian and Italian hours could be better.

So the Rohr book would best be used as an adjunct to the other texts but if you are just starting out, buy the book by Waugh first then Mayall and Mayall and then perhaps Rohr if your library hasn't got it.

6 of 6 people found the following review helpful:

4.0 out of 5 stars Another great classic on sundial construction..., January 6, 2002

By	Dan Lamb (Calgary, Canada) - See all my reviews

This book is another of the must-have's for anyone interested in understanding or building sundials. It has a lot of the theory behind how they work and how to make some of the different types of dials. I recommend this title highly!