• blargle@sh.itjust.works
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    23 hours ago

    It’s not impossible at all. It just has 3 sides, is concave, and you’re looking up at it. The tricky thing is the lack of perspective. It would only look like this with a very long lens.

    But it’s like one of these guys:

    • Nebula@fedia.ioOPM
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      23 hours ago

      Edit 2: Keep your eyes only on the dark grey side.

      I have actually built this dragon, thanks for the hit of nostalgia. 😊

      Edit: It is probably inspired by the optical illusion you posted, but made actually impossible.

      • Odo@lemmy.world
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        22 hours ago

        It’s half a cube (well, the outer walls of one), it’s just rotating the opposite way you first think it is. Not impossible at all, just a fun few moments of confusion until you catch on.

        • Nebula@fedia.ioOPM
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          22 hours ago

          Light gray side moves through dark grey and vice versa. Rotate the dragon 360 degrees IRL and you will see why this isn’t possible.

          Edit: even if you made the sides at a perfect opaqueness, there is no way it would look like this IRL.

          • ImpermeableMembrane@lemmy.world
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            22 hours ago

            You’re seeing a cube from above rotating left. That way doesn’t work. If you instead see a cube from underneath rotating right it very much does work.