funkysafari:In this photo, the bird’s wing acts as a diffraction grating—a surface structure with a
funkysafari:In this photo, the bird’s wing acts as a diffraction grating—a surface structure with a repeating pattern of ridges or slits. The structure causes the incoming light rays to spread out, bend and split into spectral colors, producing this shimmering rainbow effect. ByVictor Tyakht -- source link