[Physltest] [Phys-L] Re: LED mini-flashlight price break

[Bernard Cleyet <anngeorg@PACBELL.NET>]

Actually, tho poorly, one may stimulate the cones by pulsing w/ white
lite.   This is a DOJ vu.

Using monochromatic lite would require two colors, because the response
of all three don't overlap.

bc

John Clement wrote:

> Actually if you look at the current set of primaries used in TV, they cover
> only a portion of the chromaticity diagram.  An alternate set might give
> just as good reproduction.  Indeed Edwin Land demonstrated that only 2
> colors can be used for very good, but not necessarily excellent
> reproduction.  It is probably easier to get good reproduction with RGB.
>
> The subject of actual color vision is very different from the engineering
> model which uses the chromaticity diagram.  This is because the eye-brain
> renormalizes the perception across color boundaries to make color vision
cut
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