Thank you for the link. It is, indeed, beautiful.
I originally come from Evanston, Illinois and I've visited the Adler
Planetarium many times, mostly on school field trips. It's been a long
time, though, and I don't remember any specific objects in the collection.
There is (or was) another
And on the site of De Zonnewijzerkring, Netherlands, you may find e real
example of a dodecahedron
with sundials.
Another beautiful example, thank you.
I see dodecahedra are well-covered. I suppose I'll have to try some other
polyhedron, although the thought fills me with dread, having done
