direction sensing

Bulging Grid Illusion

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Found by Chris Foster and Eric Altschuler, moving the head towards the grid causes the image to distort and bulge towards you.

If you look carefully at the grid, you'll notice that some of the squares are not aligned perfectly corner-to-corner. This is intentionally done at specific points to induce the bulging effect.

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Widder's Ball Illusion

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"Direction Sensing" is a type of illusion of which has an image that appears to change as a function of physical movement by the observer.

In this “Widder’s Ball” illusion, as the head moves forward and eyes focus and concentrate only on the small black dot at the center, the red gradient begins to flow outwards to fill the ball.

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