Atmospheric optics wavelengths. A halo (ἅλως; also known as a nimbus, icebow or gloriole) is an optical phenomenon produced by the interaction of light from the sun or moon with ice crystals in the atmosphere, resulting in colored or white arcs, rings or spots in the sky. Many halos are positioned near the sun or moon, but others are elsewhere and even in the opposite part of the sky. They can also form around artificial lights in very cold weather when ice crystals called diamond dust are floating in the nearby air. There are many types of ice halos. They are produced
Madonna in Glory with Seraphim (Botticelli) the cruciform nimbus, is looking towards the observer and raising his hand in blessing. Botticelli has succeeded in expressing the tensions in this theme with sensitivity: the mother, who is fully aware of the Passion her son will suffer, is holding him protectively in her arms. Madonna in Glory with Seraphim (Botticelli) Madonna in Glory with Seraphim is a painting by the Italian Renaissance painter Sandro Botticelli, executed c. 1469-1470. It is housed in Galleria degli Uffizi, Florence. Some panel paintings of the Madonna by Botticelli remain from the years around 1470 which are striking expressions of Botticelli's stylistic development.