Copernicus reflecting dialHi all, I’ve seen many reconstructions of Copernicus’s sundial but I’m not agree with all of them.
The aisle with the sundial now is closed by glass windows which involved the whole arcs. In the zamek (castle) there is also a museum with many old plans and drawings of the castle, some of them (about XVIII century) show the aisle had no glass windows, they were open arcs. In two drawings the last three arcs, towards the North corner, are closed with a wall, so the area of these closed arcs became a room just in front of the office of Copernicus. Nowadays a plate indicates the door from the aisle to the office just in this area of the aisle. The walls of these arcs had a window but curiously in the first arc the window was very small. It was so small it had not utility as a window and I think it was designed to hold the mirror. The position of the mirror in this hole is compatible with the dial and the sundial was readable thanks the semidarkness due the walls of these arcs. You can see the photos of the drawings in PL14 of Sundal Atlas, www.sundialatlas.eu/atlas.php?so=PL14 , images 7 and 8. Until now, I have not evidence of a study to verify the position of the mirror like suggest the drawings of the museum. A curiousity. Another drawing shows the NE face of the castle, with the entrance through a drawbridge. On the left of the facade there is a sundial now disappeared. It is not compatible with the orientation of the facade, may be it was drawn but not realized. You can see the photo of the drawing in PL1, image 2. In the open space before the drawbridge there is a bronze statue of Copernicus, he is sitted on a park bench and he seems to look towards the disappeared sundial... (images 1 and 3) ciao Fabio PS on the Atlas there is a path dedicated to the historical reflection sundials: www.sundialatlas.eu/atlas.php?sp=145 Fabio Savian [email protected] www.nonvedolora.eu Paderno Dugnano, Milano, Italy 45° 34' 10'' N, 9° 10' 9'' E, GMT+1 (DST +2) From: Reinhold Kriegler Sent: Tuesday, April 07, 2015 8:38 AM To: Sundial Mailing List Subject: Copernicus reflecting dial May I recommend Gianni Ferrari's splendid article: http://www.ta-dip.de/fileadmin/user_upload/bilder3/6c07ca7481c84092971f6984b17cae60_Ferrari_Kopernikus.pdf You can find it in the end of my Kopernicus- link http://www.ta-dip.de/salon-der-astronomen/bewohner-des-salons-der-astronomen/copernicus-nicolaus.html And just to remember an excellent tool > Tridux 2000 by Dietrich Ahlers to construct a Reflex-dial: http://www.ta-dip.de/sonnenuhren/meine-sonnenuhren/r1-reflex-sonnenuhr.html and http://www.ta-dip.de/sonnenuhren/meine-sonnenuhren/r2-reflex-sonnenuhr.html Reinhold Kriegler * ** *** **** ***** ****** ******* Reinhold R. Kriegler Lat. 51,8390° N. Long. 12,25512° E. GMT +1 (DST +2) www.ta-dip.de http://www.ta-dip.de/dies-und-das/r-e-i-n-h-o-l-d.html http://www.ta-dip.de/salon-der-astronomen/musik-im-salon-der-astronomen.html -------------------------------------------------------------------------------- --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
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