how much of what we see is black?

From: Yoel Meranda (email suppressed)
Date: Tue Oct 30 2007 - 06:53:33 PDT

A question I'm curious about...

When a film projector is running, what is the percentage of time the
light is interrupted by the shutter? In other words, what percentage
of what we see is darkness?

I realize that this question will have different answers for each projector...

I am mostly curious about 35mm projectors but any clue on any other
projector would be great. Even guesses would be fine if no one has
concrete answers.



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