Dear friends, I send an image of a cubic sundial invented by the dialist Fabio Savian (Milan - Italy [EMAIL PROTECTED] ). The clock has an effect of kaleidoscope, because between an hour and the other, the fissures project some points of light produced by the strips of light that enter from the superior cuts and cross those on the front.
These points of light have a random distribution and move in a way that remembers a kaleidoscope. Then suddenly, when the exact hour comes, a blade of light appears on the horizontal plane. The fissures correspond to hour planes that don't have the same polar axis : in this way the hours , on the horizontal plane, are distributed on an arc of circumference and the blade of light always crosses the corresponding number. At the solstices the blade of light has an extremity on the number. Best wishes Gianni Ferrari P.S. I can send 2 better images ( 175 kb) if someone desires them Attachment converted: Macintosh HD:cubo_FS.jpg (JPEG/JVWR) (0003288B)
