Visual Illusions (also known as Optical Illusions) are experiences in which what we see does not correspond exactly with the true physical attributes of the object.
Visual Illusions are studied by physiologists, psychologists and other scientists for the clues they can provide about the workings of the eye and brain.
As well as their scientific interest, visual illusions can often be so remarkable that they may even cause us to question what we can know for sure about the world!
Explore the following links to discover some great optical illusions.
Classic Optical Illusions
Müller-Lyer Illusion The horizontal lines appear different lengths
Franz Müller-Lyer, Public domain, via Wikimedia Commons
