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Ask HN: Why does this image look 3D?

The image: https://twitter.com/mrbiffo/status/1516862012915167236

Mirror: https://i.imgur.com/3TU00N4.jpg

On my Mac's Dell LCD monitor, this image has a surprisingly intense 3D effect. The colored blocks appear to be floating in front of the blue and black background.

On my iPhone, the effect doesn't work at all, and it appears completely flat.

This is not simply a parallax or contextual effect - it feels as if I am looking at one of those lenticular 3D postcards.

What's going on?

91 points LeoPanthera 4 years ago 77 comments

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