|Two Romanian Glories pictured by Radu Gherase in the Fagaras Mountains. Image İRadu Gherase, shown with permission.|
|Essentials for a mountain glory and Brocken spectre are sunlight shining down into mist.
Wave optics - Diffraction and backscattering by the mist droplets give the colourful ringed glory opposite the sun.
Ray optics - Simple shadowing, the long shadow cast by the observer through the mist, generate the Brocken spectre.