Science | Memes | Universe on Instagram: "This incredible painting that "ages" as you walk by is a brilliant, low-tech illusion based on a principle called lenticular printing. The artwork is actually two different portraits, a young girl and an older woman, that have been sliced into thin vertical strips and interlaced together. The entire piece is covered by a lenticular lens, a sheet of plastic with thousands of tiny, curved lenses. These lenses act like prisms, directing your eyes to see a d

Lenticular printing - Alchetron, The Free Social Encyclopedia