That was a short article but an interesting concept of " mapping" the lines on a transparent medium and showing time where their shadow meets a point. A page or two later in that Compendium, Fred Sawyer showed how a stained glass window could apply the concept. I know Claude Hartman has done several designs that use light that way. I respect the creativity of the concept and designs. They are really neat! Thanks.
Warren Thom "T.& M. Taudin-Chabot" wrote: > >I can see that in abstract terms that we have dials which are > > > >- projection of a point onto a surface (perhaps curved) > >- projection of a line (perhaps curved) onto a surface (perhaps curved) > >- projection of two lines (perhaps curved) onto a surface (perhaps curved) > >- other non-projection types, such as the wonderful CD-diffraction dial. > > You forgot (at least) one: > - projection of many lines onto a point on a surface. > (see NASS Compendium Vol.1 nr.3 page 6 or BSS bulletin 91.2 page 14) > > ----------------------------------------------------------------- > Thibaud Taudin-Chabot > 52°18'19.85" North 04°51'09.45" East > home email: [EMAIL PROTECTED] > (attachments max. 500kB; for larger attachments contact me first)
