Eric Walker added Binoculars to Optics and optical lenses
Eric Walker added Researchers create focus-free camera with new flat lens to Optics and optical lenses
Eric Walker added I made a CAMERA LENS with an ICEBERG — Mathieu Stern to Optics and optical lenses
Eric Walker added a number of links to Glasses, and added Glasses to Clothing and jewelry and Optics and optical lenses
Eric Walker added a number of links to Mirrors, and added Mirrors to Optics and optical lenses
Eric Walker added Moiré pattern - Wikipedia and Scientists create an optical illusion that feels like an expanding black hole to Optical phenomena, and added Optical phenomena to Optics and optical lenses
Eric Walker added a number of topics and a number of links to Physics, and added Physics to Science, engineering, mathematics and the humanities
Eric Walker added Mirrors, Optical phenomena and Glasses and a number of links to Optics and optical lenses, and added Optics and optical lenses to Physics