I’ve chosen the name of thread randomly. The thread is about illusions of any kind, preferably with explanations.
Below is text from Wikipedia with the image, which also from there:
Quote:
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The Scintillating grid illusion is an optical illusion when dots seem to appear and disappear at the intersections of two lines crossing each other vertically and diagonally. When a person keeps his or her eyes directly on a single intersection, the dot does not appear. A variation of the Scintillating illusion is the Hermann grid illusion (see section below). In the picture on the right, a person should see white dots turn black and then turning white again very fast.
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Can anyone offer its own explanation?