Dear all members.
If I understand you right,
you want gnomon like a light-spot.
On my sundial. I had the discs
parallel with the wall, and if the discs are exact parallel the shadows will be
a circles too.
And
the hole (d=15mm) will be a circle too.
Look
at my homepage:
http://www.1
With all the discussion of discs and holes I thought members might be
interested in some photos I took of tests we made when we were deciding
on the Gnomon for the Swensen Sundial. I have put them up on the web
page http://www.uwrf.edu/sundial/design2.html . I had hoped to have
them up a week a
