To Claude Hartman and other people interested. Images of the sundial of Ibn al Shatir bult in Damascus (1371-1372 - 773 H) can be found:
- in the book of R. Rohr "Sundials, history, theory and practice" published by the Toronto Press in 1970 There are one photo (1), the reproduction of the different lines (2) and a detailed description of about 1-2 pags. The Dover Edition - 1996 - doesn't contain the part concerning the Islamic sundials. - in the article "Le Cadran Solaire de la Mosquée Umayyade á Damas" of Louis Janin published in the magazine Centaurus vol. 16/1971 pags. 285-298 In the article the are the same images that are in the Rhor's book , (1) and (2), and a drawing of the author. The explanation is very detailed - in the book "Islamic Mathematical Astronomy" of David A. King - Variorum 1993 : image (2) The David. A. King's books contain a great lot of informations on Islamic Astronomy ( and also on Islamic Sundials) - a book written by me "Appunti per uno studio delle meridiane Islamiche" (Notes for a study of the Islamic sundials) (150 pags. in Italian). Besides the two images (1) and (2) there are 3 drawings, obtained from the original (2), in which I have put in evidence the different types of hourly lines that are in the sundials . The explanation is detailed. The book has not been published and I distributes it in photocopy. It contains also the descriptions of other sundials of the ancient Islam. Gianni ------------------------------------------ Ing. Gianni Ferrari Via Valdrighi, 135 41100 - MODENA ( ITALY ) EMail : [EMAIL PROTECTED]
