View Single Post
  #44   Report Post  
Posted to sci.electronics.repair,uk.d-i-y
Andy Champ[_2_] Andy Champ[_2_] is offline
external usenet poster
 
Posts: 2,397
Default Bit of a con, really ... ?

wrote:

Red green and blue are defined scientifically as primary colors. I
don't know where those standards came from, nor do I care


You may not care, but I'm going to tell you anyway

It's from Biology, not physics; RGB are the peak sensitivities of the
three colour receptors in the most common human retina. We're so poor
at telling them apart that a red-green mix looks pretty much like some
kind of yellow. (Narrow spectrum lamps are fine for TV, but they can
make your wallpaper look a bit odd, which is one of the CFL problems)

Most common sort? Well, colour blindness is an obvious case. But
apparently a few women have 4-colour vision.

And for true colour accuracy (though without speed or much resolution)
look at the Mantis Shrimp. IIRC it has sensors for polarisation and a
complete spectrometer build into its eye.

Andy