Hi Valentin what do you think about a fin to fold ?The stability of the gnomon depends on the latitude too, i might draw 2 fins with latitude over 30 or 40°.
Fabio Fabio Savian Paderno Dugnano, Milan, Italy 45° 34' 10'' N, 9° 10' 9'' E, GMT+1 (DST +2)-----Messaggio originale----- From: Valentin Hristov
Sent: Tuesday, December 20, 2011 2:28 PM To: Fabio nonvedolora Cc: sundial@uni-koeln.de Subject: Re: paper sundial No 4 Dear Fabio and sundial colleagues, I am glad that the paper dials become more popular. Perhaps you remember that I prepared some types of paper sundials using DeltaCad www.math.bas.bg/complan/valhrist/mystuff.htm, but a very important jump was made at Damia's web site http://sundial.damia.net/vertical/sundial.php with using Google maps.Now Fabio goes further in the same direction with new types of paper dials at
www.sundialatlas.eu/atlas.php?gnomolab=3 for which all of us are very very thankful to him!!! Perhaps not everything is perfect, therefore many people made some suggestions. I also want to add a possible improvement. It concerns Paper dial No 4. Attached is a picture of an additional drawing, which allows to keep the gnomon perpendicular to the plane. Perhaps there are some other construction, e.g. origami ones (Wee-Meng Lee is an origami specialist, see http://leewm.freeshell.org/origami/) and I hope all we could help with ideas for further improvements of the constructions. All the best for the coming New Year 2012 !!!Valentin Hristov
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