Stereo Vision

A large red and blue cube frame that has blue and orange banners running from top to bottom with different information on each. There are orange and yellow objects hanging from the frame.

The human visual system can create an illusion of three dimensions when presented with two dimensional images.

How it works

Look into a stereoscope to create the illusion of a three dimensional picture.

Things to try or ask around the exhibit

With your nose just in front of the centre line, look into the mirrors. Does the picture look three dimensional?


When you look at something with both eyes, each eye sees the scene from a slightly different angle. Your brain combines these two views to give you a three dimensional view. This is called stereo vision.

If the tapping is closer to your left ear, the vibrations reach your left ear about one thousandth of a second sooner than your right ear!

Finding the science in your world

Your brain uses stereo vision to judge where things are located. This helps you thread a needle or kick a ball into a goal.