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Light - Reflection (continued).
When you look into
a mirror,
you see a reflection which is an image
of the real object.
The image appears
to be the same distance
behind the mirror
as the real object is in
front of it.
This is because the brain thinks that light travels
in straight lines
without changing direction.
The image is
called virtual because it does not
really exist behind
the mirror.
The virtual image is the same
size as the object
but with left and right
reversed.
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