Page 48 - Knowing The Truth

46 KNOWING THE TRUTH

view of elements such as light and position.
fields of
When the brain brings these two impressions vision
into one picture, we get the sense of space and
right
left
depth. Come on, let's try an experiment in order field field
to understand this better. Ibrahim will be the
optic
nerve
subject. optic
chiasm
optic
tract
IBRAHIM: Okay.
optic
radiation
MURAD: First, stretch out your right arm
and show us your index finger. Now, focus your
eyes on your finger and open and close your As can be seen in the
diagram above, the eye
right and left eyes one after the other. Because
receives a two-
two different impressions strike your two dimensional image. In
eyes, you will see that your finger changes the process of seeing,
the two images, one in
place or slides slightly. Now, continue to focus
each eye, are formed
your eyes on your right index finger and bring into one picture. In this
way, a three-dimensional
your left index finger as close as possible to
image is created.
your eyes. You will notice that the finger
closer to you has formed a double image
which proves that an impression of depth different from
that of the farther finger is formed in the system
of perception. Now, while you are in that
position, if you open and close your eyes
one after the other, you will see that the
closer finger changes place more than
that farther finger because the
difference between the two
impressions striking the eye has been
increased.

IBRAHIM: Yes, you're right.