What is an Optical Illusion? An optical illusion is a visual phenomenon where the brain misinterprets what the eyes see. Instead of perceiving an image exactly as it is, the brain fills in gaps, ...
It all started one summer lunchtime in 1992 on the terrace outside the CERN cafeteria. If you had happened to be there at the physics research lab near Geneva at the time, you might have overheard ...
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