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When you look through a paper tube with one eye and move you hand back and forth up against it in front of the other eye why does it look like there is a hole in your hand?
Wiki User
∙ 14y ago
In order to see in 3D, your brain superimposes 2 images (one from each eye) at the same time. The difference in angle between the eyes is very slight at a distance, but is much more pronounced close up.
What you are seeing is simply 2 pictures...one of a view through the tube and one of your hand...put over top of each other.
Wiki User
∙ 14y ago
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