The correct reference should have been to Sept 1999 The Compendium vol.6 no.3
----- Original Message ----- From: "Dave Bell" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, September 13, 2002 2:03 PM Subject: Re: Diffraction Anti-sundial > On Fri, 13 Sep 2002, [ISO-8859-1] Anselmo Pérez Serrada wrote: > > > I believe the best solution is the CD sundial or 'difraction > > sundial'. You only need a faulty CD > > and a transparent sticker to draw the lines of a 'spider dial'. See the > > Compendium, Nr 3 Sept 1990. > > It works very well indeed. > > Anselmo > > I only have Compendia back to the first Digital version, in 1995(1994?). > I know what a "spider" dial is and looks like, but what was the effect of > the CD, other than the pretty diffraction patterns? Possibly, a spider > dial with no vertical gnomon? That would work well, for sure! > > And, since I define AOL throw-aways as "faulty" from the start, I have > plenty of the required dial faces... > > Dave > 37.28N 121.97W > > > - > -
