Re: altitude dial

[Bill Gottesman]

That is a very impressive both mathematically, and as an original dial. -Bill On 1/25/2011 12:01 PM, Fabio Savian wrote: hi Frank, two years ago I designed a variant of the shepherd's dial so it became universal (for any latitude). The moving gnomon is curved (the curve is an astroid) and it may move up and down and also around the dial. The gnomon (the tail of the rooster, the crest and the beak are decorative) has to be placed in the point where the curve of the date (the Sun declination curve) crosses the curve of the latitude. The upper shadow of the tail shows the time. ciao Fabio Fabio Savian fabio.sav...@nonvedolora.it Paderno Dugnano, Milan, Italy 45° 34' 10'' N   9° 10' 9'' E GMT +1 (DST +2) --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial

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