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This mind-melting optical illusion is called the Hermann Grid [1]

['David Pescovitz']

Date: 2022-12-14

Mathematician/author Cliff Pickover posted the mind-melting optical illusion below. It's an example of the "Hermann grid illusion," first described by Ludimar Hermann in 1870 when he was reading a book about sound and noticed gray spots appearing at the intersections of lines in a diagram on the page. As explained by SharpBrains, "the illusion results from retinal cells adjusting the brightness of an image by adjusting the intensity of the light signal in many small sections, which allows you to see a wide range of both bright and dark details in the same image."

Reality shatter.



The left side and the right side of this lattice have the same number of black dots.



By Jacques Ninio and Kent Stevens, "Variations on the Hermann grid: an extinction illusion," Used with permission of K. Stevens. pic.twitter.com/UoiztliNtm — Cliff Pickover (@pickover) December 13, 2022

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