Hello toves out there, Thanks for all the comments! Mathematically, a polyhedron is a body bounded by polygons. It need not be regular or indeed convex. I used the term because it is descriptive of what the sundials look like.
Ruud Hooijenga (please note the extra 'j' in my name :-) ) PS I always had trouble remembering which was which, until -40 years ago- I read: KonKAV ist eine Fläche dann, wenn man KAFfee hineinschütten kann. -----Frans Maes wrote:----- Actually, I would not call it a "polyhedron", as I would reserve that term for a convex body bounded by regular polygons. The polygons may or may not all be the same. A multiple sundial such as this one, with lots of edges and crevices, has been called a "Blocksonnenuhr" (block sundial) by René Rohr, and that is also the term I used in the article in the Bulletin. --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
