Product Information

From a scientific perspective, this ʻChroMagicalʼ
light fixture can be thought of as the inverse of a prism.
When white light passes through a prism, each of the
constituent colors bends a slightly different amount,
producing a rainbow. In our case, when the red, green and blue lights all
shine together on a white surface, they blend together to look white (not
pure white, but close).
The shadows cast by this light are black at the center, where all three colors
are blocked. But at the edges, some interesting effects are seen.
When only the blue light is blocked, the green and red light mixes to form
yellow. Where the green is missing, the red and blue form magenta, and
where red is missing, green and blue make cyan. (These three colors,
cyan, yellow and magenta, are the three inks used in color printers; by
mixing them in different amounts, any color of the rainbow can be created.)
You also see pure red, blue and green shadows where both of the other
colors are blocked.
This type of exhibit is usually set up with the light shining on a white wall or
screen. The visitors stand in front of the screen and see their shadows on
it. The area should be as dark as possible, since any stray light will cast its
own shadows and reduce the visual impact of the colors. If possible, the
floor and ceiling and other surfaces around the screen should be flat black
to minimize reflections. A dimly lit corner or hallway is perfect. For evaluation,
you can mount the light to a camera tripod using the ¼-20 thumbscrew
in the mounting bracket, or just hang it over a table from above. Experiment
with different working distances. As shipped, the LEDs inside the fixture
are mounted near the opening of the can, which produces a wide
beam. You can get a narrower beam by moving the LEDs deeper into the
can using one of the other two sets of holes along the side.

Height:
Width:
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Weight:
Electrical Requirements:
Other requirements:
Lead Time: Six weeks from receipt of deposit