A mirage is an optical phenomenon that creates the illusion of the presence of water and is a result of the refraction of light from a non-uniform medium.
Fata Morgana is a complex form of elevated mirage that appears in a narrow band above the horizon. The word Fata Morgana is the result of the Italian translation of Fata Morgana, a mirage that often occurs over water or in cold areas covered in snow or ice. This makes the islands visible, although they are usually invisible because they are below the horizontal line due to the curvature of the Earth. Like other high images, Fata Morgana occurs because light rays are bent as they pass through layers of air of different temperatures in a steep thermal inversion formed by an atmospheric duct.
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