Lenticular Invisibility: https://tinyurl.com/e9cbrtve This thin acrylic sheet is comprised of tiny cylindrical lenses which can allow images to be “out of focus” along one dimension which blurs thin images and hides them. This 70 lens per inch sheet is part of a lenticular optics kit that came as part of my winter @thecuriositybox- amazing and fun! Follow the link above for info on where to get lenticular sheets and many of the items featured here on Physicsfun | Physicsfun