The Grid Illusion is an optical illusion that tricks the eye into seeing a pattern of curved lines instead of straight lines. It is a fascinating phenomenon that has puzzled scientists and artists alike. The illusion is created by a grid of squares, each filled with a different color. When viewed from a
From Wikipedia
A grid illusion is any kind of grid that deceives a person's vision. The two most common types of grid illusions are the Hermann grid illusion and the scintillating grid illusion.