For today's edition of #WorldPhotographyWeek, we're celebrating diffraction! Pictured: An array of white lights is split into the color spectrum by a diffraction grating. —Page E. King, College of Optical Sciences - Tucson, AZ Laser diffraction pattern of 2D quasi-photonic crystals fabricated by a holographic dual-beam interference multi-exposure technique. —Vadivelan V Varadarajan, Research Scholar. Diffraction in the form of rings, in which a drop of water was placed on top of the camera lens. A light was directed toward the setup to obtain a diffraction pattern. — Anonymous #photography #sciencephotography