While this rug looks like it will suck in any and everything put on top it is safe to use and even has a non stick bottom so that the vortex will stay in place.
Checkered floor illusion cylinder.
The 3d vortex rug is a cleverly designed black and white checkered floor covering that creates the optical illusion of a gaping hole in the middle of the floor.
These illusions work because of the way the brain understands contrast and shadows.
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You will in all likelihood perceive the above picture as a 3 dimensional scene where a greenish cylinder stands on a checkered plane.
The checker shadow illusion is an optical illusion published by edward h.
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This optical illusion known as the checker shadow illusion is related to the infamous cornsweet illusion named after psychologist tom cornsweet in the 1960s.
Adelson s checkers shadow illusion is a 2 d figure but if we were really looking at a 3 d scene containing a single light source and an ordinary checkerboard then the actual tile a really would be darker than the actual tile b.
In some ways this best guess hypothesis is plausible.
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Light comes from top left.
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Adelson professor of vision science at mit in 1995.
The optical illusion is that the area labeled a appears to be a darker.
The image depicts a checkerboard with light and dark squares partly shadowed by another object.
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Demonstration of adelson s checker shadow illusion.