- inferior mirage
- The term inferior mirage is indebted to the French verb se mirer, which means to reflect, or to be reflected. The adjective inferior refers to the phenomenon's position relevant to the horizon or a distant object. The term inferior mirage is used as a generic term for a group of "physical illusions typically depicting distant pools of water or oil or blue sky over a hot surface such as a road, a runway, or a desert, which have a relative position beneath a perceived distant object or the horizon. If the light is reflected not by the sky but by a mountain or other distant object, then that object is reflected in the miraged image. Inferior mirages tend to be classified in accordance with the nature of the surface above which they appear. Two examples of inferior mirages are the desert mirage and the " highway mirage. The mediation of inferior mirages is attributed to differences in the refractive index of the atmosphere, which are in turn attributed to layers of cold air overlying layers of hot air, with differences in temperature between the adjacent layers of air of 10° C or more per metre. Uniform temperature gradients tend to produce undistorted images. Increasing temperature gradients, such as those of 10°C/m near the ground, and 20°C/m higher up, tend to yield inverted images. Temperature gradients of a higher complexity may yield even more complex distortions. These may be vibrating, vertically extended (i.e. 'towering'), flattened (i.e. 'stooping'), etc. The term inferior mirage is used in opposition to the terms " superior mirage, "double mirage, and "lateral mirage.ReferencesFraser, A.B. (1979). Simple solution for obtaining a temperature profile from the inferior mirage. Applied Optics, 18, 1724-1731.Lynch, D.K., Livingston, W. (1995). Color and light in nature. Cambridge: Cambridge University Press.
Dictionary of Hallucinations. J.D. Blom. 2010.
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inferior mirage — n a mirage consisting of an image of a distant object appearing below the real object and usu. somewhat separated from it … Medical dictionary
inferior mirage — A spurious image of an object formed below the true position of that object by abnormal refraction conditions along the line of sight; one of the most common of all types of mirages. The requirement for the appearance of an inferior mirage is a… … Aviation dictionary
highway inferior mirage — see highway mirage … Dictionary of Hallucinations
Mirage of astronomical objects — Mock mirage of the setting sun A mirage of an astronomical object is a naturally occurring optical phenomenon, in which light rays are bent to produce distorted or multiple images of an astronomical object. The mirages might be observed for such… … Wikipedia
Mirage — This article is about the optical phenomenon. For other meanings of Mirage, see Mirage (disambiguation). Various kinds of mirages in one location taken over the course of six minutes, not shown in temporal order. The uppermost inset frame shows… … Wikipedia
mirage — The term mirage comes from the French verb se mirer, which means to reflect or to be reflected. It is unknown who introduced the term. It appears in the title of a paper by the French physicist Gaspard Monge, Comte de Péluse (17461818), who… … Dictionary of Hallucinations
double mirage — The term double mirage is indebted to the French verb se mirer, which means to reflect or to be reflected. It is used to denote a * mirage or * physical illusion consisting of a combined * superior and * inferior mirage. Inferior mirages are… … Dictionary of Hallucinations
highway mirage — Also known as highway inferior mirage, asphalt mirage, hot road mirage, and road mirage. All five terms are indebted to the French verb se mirer, which means to reflect or to be reflected. They are used interchangeably to denote a physical… … Dictionary of Hallucinations
lateral mirage — The term lateral mirage comes from the Latin adjective lateralis (side) and the French verb se mirer (to reflect, to be reflected). It is used to denote a type of mirage or physical illusion occurring along hot, vertical structures such as a… … Dictionary of Hallucinations
superior mirage — Also known as arctic mirage. Both terms are indebted to the French verb se mirer,which means to reflect or to be reflected. The designation superior refers to the position of the phenomenon relative to the horizon or a distant object. The… … Dictionary of Hallucinations