P3D Re Eye adjustment to anaglyph

[Peter Homer <P.J.Homer@xxxxxxxxxxxxx>]

This phenomena where you see the complementary colour to the one you have
been looking at or through for some time is well known. The explanation is
apparently that the cone colour receptors for the particular colour become
exhausted of the   particular Iodopsin pigment  for that colour as it
undergoes the chemical changes that bring about the stimulation of the
optic nerve. When you then look at a white surface which actualy reflects
all colours this colour cannot be registered for a while untill the pigment
is replaced so you only see the remaining colours. In the case of looking
through a red filter this will be green and blue which together are cyan
with a cyan filter both green and blue become exhausted to give red. It is
similar to the way that a flash gun in the face at close range makes
everything dark for a while because the intense white light exhausts all
the colours. I have seen it done with projection of negative images on a
screen which when removed produced the positive for a while also observing
the intense red spot from a laser on a screen (Not Viewed directly I hasten
to add ) I sometimes see a blue spot after image  .   P.J.Homer



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