Animation Floating Pen: this pen creates motion animation using the barrier-grid technique as the floating slider glides against a striped background. “A Man in a Pen, Walking” is a creation of artist Satoshi Endo. Fun kinetic art moiré pattern motion. ➡️ Follow the link in my profile for info on where to get this pen and other amazing items featured here on @physicsfun #moire #moirepattern #interference #floatingpen #barriergridanimation #barriergrid #constructiveinterference #physics #physicst