I think it may be difficult to get a good visible shadow on glass viewed from
outside. Stained glass dials work nicely from a darkened room inside. There is
also the question of finding an appropriate type of paint that will stand up to
the UV light.
It may be more difficult to handle the
Steve--
Yes, undeniably the co-Italian hours have more practical use than
Babylonian hours, as do the Temporary Hours that used to be standard before
clocks came into use.
For outdoor work like agriculture, or anything for which candle-light
wasn't sufficient, of course it mattered very much how
Michael,
For sure.
I simply ignored the possibility of Babylonian Hours because I
personally don't think they have much practical use (to the extent that
any sundial has practical use these days). For a dial showing hours to
sunset, on the other hand, I do see some hint of practical use. It
