Orchid XP v3 wrote:
> AFAIK, the retina sees the "integral" of incident light over time, 

Errr, not even close. Indeed, if something is completely still, you 
can't see it at all. That's why your eyes are always moving (saccades).

-- 
   Darren New / San Diego, CA, USA (PST)
     Remember the good old days, when we
     used to complain about cryptography
     being export-restricted?

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