This makes only a tiny dent in answering David's question. A linear (polar-seeking) gnomon will be just fine, and its shadow will wrap appropriately around the bullnose, matching the curved hour lines all year long, provided they are drawn correctly. That is the easy part. I would tackle the calculation of the hour lines myself, but I don't have the time, and I'm not 100% sure whether or not I have the ability. That being said, my approach would be to draw the lines on a paper that then gets wrapped around the bullnose. We would need to know the latitude, longitude, and the bullnose radius. That is of course assuming I could figure out how to calculate those lines.
-Bill G.
In a message dated 11/11/2005 1:45:11 PM Eastern Standard Time, [EMAIL PROTECTED] writes:
Would it make any sense at all to have a linear gnomon, since the hour lines will be curved until they reach the plane part of the walls, or am I bound to have to use a nodus only as the indicator of time?
