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
What Is Art? in the evolution of knowledge - that is, the forcing out and supplanting of mistaken and unnecessary knowledge by truer and more necessary knowledge - so the evolution of feelings takes place by means of art, replacing lower feelings, less kind and less needed for the good of humanity, by kinder feelings, more needed for that good. This is the purpose of art. Tolstoy's analysis is influenced by his radical Christian views (see "The Kingdom of God is Within You"), views which led him to be excommunicated from the Russian Orthodox Church in 1901. He states that Christian art, rooted