Okay, so photochromic paint isn’t necessarily magical, but when Jiri Zemanek of the University of Prague points a laser rescued from an old Blu-ray player at these specially treated eggs, the effect sure looks like magic to us.
According to the description at YouTube:
Those patterns are carefully designed and calculated to create an illusion of animation when captured by a camera (or illuminated using stroboscopic light). You see exactly what the camera captures—no aftereffects were used. This device is a kind of zoetrope (an old device used for animation), but it allows to change the pattern dynamically.
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