Pulfrich effect

[P3D Jim Crowell <crowell@xxxxxxxxxxxxxxxxx>]

Hi all;  I'm just back from 2 weeks off-line in Florida (at a
conference in Ft. Lauderdale & visiting relatives near Tampa).

Someone recently pointed out to me an interesting variation of
the Pulfrich effect.  When you're riding along on a freeway, you
look out the side window & put a dark filter over one eye.
Depending on which eye you cover, you appear to be either moving
very quickly past a large, distant scene or more slowly past a
small, near scene.

I haven't tried this, but logically if you had a dark enough
filter it should be possible to get the depths to reverse...

-Jim C.


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