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A schematic of an inferior mirage, showing a) the unrefracted line of sight, b) the refracted line of sight and c) the apparent position of the refracted image. In an inferior mirage, the mirage image appears below the real object. The real object in an inferior mirage is the (blue) sky or any distant (therefore bluish) object in that same ...
Inferior mirage of astronomical objects is the most common mirage. Inferior mirage occurs when the surface of the Earth or the oceans produces a layer of hot air of lower density, just at the surface. There are two images, the inverted one and the erect one, in inferior mirage. They both are displaced from the geometric direction to the actual ...
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A mirage is a naturally occurring optical phenomenon in which light rays are bent to produce a displaced image of distant objects or the sky. The word comes to English via the French mirage, from the Latin mirare, meaning "to look at, to wonder at". This is the same root as for "mirror" and "to admire". Also, it has its roots in the Arabic mirage.
Inferior‑mirage flash: Joule's "last glimpse"; oval, flattened below; lasts 1 or 2 seconds: Surface warmer than the overlying air: Close to sea level Mock‑mirage flash: Indentations seem to "pinch off" a thin, pointy strip from the upper rim of the Sun; lasts 1 or 2 seconds: Atmospheric inversion layer below eye level; surface colder than air
The first published English grammar was a Pamphlet for Grammar of 1586, written by William Bullokar with the stated goal of demonstrating that English was just as rule-based as Latin. Bullokar's grammar was faithfully modeled on William Lily's Latin grammar, Rudimenta Grammatices (1534), used in English schools at that time, having been ...
Consider a so-called "inferior mirage", where the air is hot near the ground, like in the desert or a hot, shimmering road. Model this by assuming that the refractive index is a smooth function of the height above the ground, i.e. take n=n(z) where z is height above the ground.
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