"George Hammond" wrote in message
ink.net...

snip
Thus, it turns out that moves DON'T work on the principle of
"persistence of vision", but in fact work because of the
"slowness" of the human brain. The human brain can only
process 15 bits/sec of information, and this is what causes
the PFF of the average person to be 15 frames/sec... and this
is why "movies work".... not because of "persistence of vision"..
there is no such thing as "persistence of vision"!

(see: http://www.v-weiss.de/lehrl-full.html
for a full explanation )

snip

[Zagan]
While I don't know if movies work by bits/sec or persistence of vision, I
must take exception to your statement that "there is no such thing as
'persistence of vision'." Anyone can perform a simple experiment to
demonstrate their own persistence of vision. For example, while looking at
my computer monitor, if I shut my eyes, the image of the screen persists for
what I guess is a few milliseconds. The reason for the persistence of vision
is that the eye-brain process is not instantaneous. It takes time for the
eye-brain mechanism to process images due the limitations of the
electrochemical processes involved. Intelligence has nothing to do with this
process.

If I cannot process more than 15 frames/sec. why is it that when I go to a
movie theater, it takes me several minutes before the "flow" of the movie
seems continuous. I'm not saying I see each individual frame. I'm saying I
sense a discontinuity. It is this discontinuity that causes some people to
get headaches. Some theaters use projectors operating at 48 fps. Think about
it before you decide the movie is running at twice speed.

I do not get this effect when watching TV (in the US 30 interlaced frames
per second, or 60 images per second). But this is because the phosphorus
"dots" on the screen do not glow/fade instantaneously.

http://www.100fps.com/how_many_frame...humans_see.htm

I know you will consider me an idiot, but we have become accustomed to that.

// Jim