This is what the upper corners look like with plastic, chrome-color sides.
In 2001 we introduced the PRISMA II, an updated version of the Prisma changing clock from the 70's. In 2012 we introduced the Prism TL with the thick edge-polished acrylic on the front. We have improved on the original. The lamps are long life LEDs , they slowly lose brightness – down 30% in 15-20 years. No fluorescent lamps to fuss with.
What's so special about polarized light color changing? There are continuously changing colors and surprising color 'shifts' when the secondhand disk overlaps the minute & hour hands. There is something else going on! First you intuitively sense - something is wrong with the colors. Then you walk around while watching the clock and surprise --- the colors change depending on your viewing angle! Plus, inside the clock you see a clear secondhand disk changing through a magenta-blue-green-yellow color range, twice/minute as it rotates. It turns out, the color changes have to do with polarized light and a phenomenon called bi-refractance. Vectors of light are being rotated as they pass through each material which is very different from color filtering. The case is flat black acrylic. The motor is the same big, strong metal gear, long life, as was in the original Prisma. The best of contemporary design and engineering. Enjoy the Prisma for a lifetime and then pass it down to your descendants. |
(The above picture is of an old fluorescent version we no longer make.)
To ask questions or place an order call 1-707-795-1895
To order over the internet go to home page and scroll down
International ordering information
SPECIFICATIONS:
ACCURACY: + or - 2 SECONDS AS LONG AS THE POWER IS ON.
LAMPS: LED Light-emitting-diodes. Life depends on brightness set by user. Default brightness (when you first plug it in) is 15-20 years to 30% less brightness. CASE: Matte black ACRYLIC or plastic, CHROME-COLORED, TOP & SIDES. MOTOR: Big strong metal geared motor, usually lasts 20-25 years. POWER: 120 VAC 60 HZ, 10 WATTS, (For information on 230 VAC, 50 HZ click here). WEIGHT: Prisma II 5 LBS. Shipping weight 6 LBS. Prisma TL shipping weight 8 lbs. DIMENSIONS: 7.25 in. HIGH, 7 in. WIDE, 5 - 3/16 in. DEEP. TL version is 6" DEEP. WARRANTY: ONE YEAR , PARTS AND LABOR. |