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Illusion - Is Seeing Really Believing?
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Illusion - Is Seeing Really Believing (1998)(Marshall Media)[Mac-PC].iso
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00383_Field_383.txt
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1996-12-31
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1KB
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34 lines
Apparent Movement
One of the earliest techniques
for creating apparent motion
was the "magic disk." The
figures appear to move when
the disk is spun in front of a
mirror and the figuresΓÇÖ
reflections are viewed through
one of the narrow slits in the
disk. Many people believe that
the effect is based on the visual
persistence of one picture as
successive pictures are seen.
This explanation, however,
would only explain the absence
of flicker, not the perception of
motion.
Most people realize that moving
pictures, including television,
are illusions based on a
succession of still pictures
projected on a screen. But many
believe that the illusion results
from the eyeΓÇÖs tendency to
continue to transmit signals to
the brain from a frame of film
even when it is no longer
projected on the screen, thus
filling the gap between frames.
However, such persistence of
vision explains only the
absence of flicker, not
apparent motion.