On 23 Dec 2011 at 17:02, Mouse wrote:
Not quite. It can cause the human visual system
to produce
perceptions which match fairly closely those produced by orange,
yellow, etc light. It can't actually produce orange, yellow, etc,
light, nor is it likely to fool a visual system (organic or
electronic) that doesn't have response curves reasonably close to
those of the human visual system. (With suitable recalibration it
might be able to fool some of them.)
This brings to mind the Land color system using white and red light.
has more information
about this.
And here is an interesting claim that humans have four kinds of cones,
with the fourth being for ultraviolet. But they have little effect due
to all the transparent parts of the eye blocking that light range.
Little effect isn't the same as no effect, however.