Dear Friends, Some time ago I designed and built an instrument that uses a laser beam to project the lines and curves of a sundial onto any surface - including large and complex surfaces, and regardless of surface orientation.
The device, which I named the "Laser Trigon", was originally presented at the first Conference of the North American Sundial Society in April, 1995. A more complete discussion was published in NASS Compendium 3-2 in June 1996. The instrument is about to begin its first field trial, and I am going to try to use my Web pages to document the use of the instrument as it produces an interesting (or at least amusing) sundial. Over the next few weeks I will update the page as the work progresses, so you can watch it live. Point your browser at: http://www.shadow.net/~bobt Follow the link to the "Laser Trigon" for information on the instrument itself, then head for the "Shadow Garden" where the dial is being built. See you there? Bob Terwilliger NASS Design and Construction Group
