Len, I know a single sundial in Dubai on the grounds of a mosque next to the Dubai Creek. http://www.intmath.com/blog/dubai-math-and-science/1199
I also read the news that is being built the largest sundial in the world using the shadow of the Burj Khalifa skyscraper: http://www.flickr.com/photos/40114886 @ N05/6946793366 / http://nbnl.globalwhelming.com/2010/11/25/worlds-biggest-sundial-the-burj-khalifa-dubai/ I also know that an Italian architect ( Arch. Paolo Ficara- Canicattini Bagni- Siracusa) has designed and built a large sundial for an international exhibition in Dubai (but I do not think it is more visible). See the article in "The Journal of Sicily" of 01.12.2013 http://www.gds.it/gds/sezioni/vitapiaceri/dettaglio/articolo/gdsid/305695/ ------------------ - Thibaud, the general rule that you remember (a sundial in every mosque) is no longer followed by many years. Already a few centuries ago (starting from about the sixteenth century), almost all the sundials in the mosques were destroyed and replaced with mechanical clocks. Now from electronic billboards :-) The same thing happened of the sundials on public buildings and churches in Europe. Fortunately, some dials have remained intact. Almost all are from the Ottoman period, after 1350. A few dozen in Istanbul and in Turkey, very few in Cairo and in famous mosques in the Islamic world (Damascus, Kairouan, Tunis, etc.). All of these are described in my book “*Le meridiane dell’antico Islam”* See a description of this book in https://dl.dropboxusercontent.com/u/6616660/ISLAMIC%20SUNDIALS_Some%20pages.pdf https://dl.dropboxusercontent.com/u/6616660/ISLAMIC_SUNDIAL_Note.pdf The marks of midday ( *noon indicator *or better indicators of the instant of the prayer Zhur) are very rare and, in my research which has lasted for many years, I found only three, all in Isfahan (Iran). One, that you indicate, in the Masjid-e Shah Mosque or Mosque of the King, and was built by the mathematician and poet Sheikh Baha (1547-1625), a second in the Friday Mosque; a third, consisting of a rectangular stone, 75cm high, covered by a long inscription is in the Religious School named Chahar Bagh (Four Gardens), and was built in 1932 (8 Aban 1311 HE). It has now been moved and no longer indicates the hour of noon. I never knew of sundials in Dubai, with the exception of the modern mentioned above. ------------------ - Gianni Ferrari 2014/1/25 Thibaud Taudin Chabot <tcha...@dds.nl> > In Dubai the general rule applies that in all major mosks there might be > a sundial, sometimes an old one, sometimes a simple one that is just > indicating noon. > Many mosks also have what I call a 'noon indicator'. That is a stone often > cleverly integrated in the environment which has an edge that is directly > N-S. Result is that a side of the stone is shadow before noon and is sun > lit after noon. Once you have seen one you recognize them easy. > Attached one was found in the great mosk in Isfahan, Iran. (I hope the > picture comes with this message) > Thibaud > > At 18:56 24-1-2014, Len Berggren wrote: > > Hello. > I'm going to be visiting Dubai and the region around it soon and I wonder > if anyone knows of any sundials in that region? > -Len > > -- > J. L. Berggren > Professor Emeritus > Department of Mathematics > Simon Fraser University > 8888 University Dr. > Burnaby, B.C. V5A 1S6 > phone: 604-936-2268 > fax: 604-936-2168 > website: http://people.math.sfu.ca/~berggren/ > --------------------------------------------------- > https://lists.uni-koeln.de/mailman/listinfo/sundial > > ------------------------------ > Th. Taudin Chabot, . tcha...@dds.nl > > > > > --------------------------------------------------- > https://lists.uni-koeln.de/mailman/listinfo/sundial > > >
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