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Eyes, Brain, Action!

You see movement all around you, from birds flying
in the sky to a video playing on a screen .

But how do you actually see these things?

To see motion, your eyes and brain work
together . First, light bounces off moving

objects or comes from a source such
as a video screen . This light comes to

your eyes . From there, nerves send signals
to the brain . The brain uses this information

along with past experiences to interpret motion .

1. Light from
objects travels
Images on electronic to the eyes.
screens appear to
move when tiny
colored dots or squares
called pixels change
hue and brightness.

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