It uses a series of flashing lights behind the image to trick the viewer’s brain into thinking the is ‘diamond’ is moving up, down, left and right.
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Have you seen a diamond which is stationary but appears to be moving? An optical illusion, which researchers believe can be a valuable tool for “tests of spatial contrast, temporal contrast, contrast gain, and color contrast”, has left the Internet baffled.
Dubbed the Perpetual Diamond, the illusion will make you think that the diamond is moving up and down, left and right on the screen, even though it is completely still.
The optical illusion was created by researchers Oliver Flynn and Arthur Shapiro from the American University in Washington DC, as per the BBC reports.
It uses a series of flashing lights behind the image to trick the viewer’s brain into thinking the is ‘diamond’ is moving up, down, left and right, according to the BBC.
It was shared on Twitter by Arthur Shapiro, who wrote: "The diamond remains fixed in one place but appears to move up, down, left, or, right. See how far away you can be from your screen before the effect goes away."
The perptual diamond: The diamond remains fixed in one place but appears to move up, down, left, or, right. See how far away you can be from your screen before the effect goes away. From https://t.co/XRFKTtjOfmpic.twitter.com/af7BOUCvfC
“The motion process is the same as reverse-phi; it is the 4afc configuration that is (perhaps) useful. The cool part is that the motion direction can be resolved when the edges have a thickness of 1 sec (!) of visual angle. Try it out,” he explained in a comment on his post.
The motion process is the same as reverse-phi; it is the 4afc configuration that is (perhaps) useful. The cool part is that the motion direction can be resolved when the edges have a thickness of 1 sec (!) of visual angle. Try it out.