Re: Seeing color

[P3D <gnored@xxxxxxx>]

Dr T writes:

>I received a B&W stereo slide with the instructions to put it in my stereo
>projector and use a red filter over one lens and will see color.

The slide you received was prepared by shooting one frame with a blue 
filter and the other with a red filter. When projected, only the red 
filter is supplied.

Amazingly, your brain recreates the full color of the original scene. 
The color can be quite good. Curiously, iIf you reverse the placement 
of the red filter the perceived colors reverse! BTW, when the scene 
is completely abstract, and the subject is deprived of all outside 
sensory cues, different individuals describe the scene as being 
differently colored! 

Dr. Land (of Poloroid fame) conducted these experiments in the 
early 60s, presumably hoping to find an acceptable way of creating 
color Polaroids without the expense of the complex color chemistry 
that is now used. His research was described in an article for 
Scientific American. It would have been published sometime around 
1963.

I see no reason why this wouldn't work well with 3D. I intend to try 
it as soon as I can. Imagine! All the advantages of B&W film and 
color too! The mind boggles!

Gary Nored

I remember it distinctly, because I was taking Scientific German at 
the time, and I recreated his experiment for my term "lecture," which 
I had to deliver in (halting) German. 






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