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Definition of Parhelic circle
1. Noun. A luminous halo parallel to the horizon at the altitude of the sun; caused by ice crystals in the atmosphere.
Definition of Parhelic circle
1. Noun. (meteorology) A luminous halo, each side of the sun parallel to the horizon, caused by refraction of sunlight through ice crystals. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Parhelic Circle
Literary usage of Parhelic circle
Below you will find example usage of this term as found in modern and/or classical literature:
1. A Treatise on Meteorology: With a Collection of Meteorological Tables by Elias Loomis (1868)
"Near those points where halos cut the parhelic circle there is a double ...
One is commonly seen near each of the points where the parhelic circle cuts the ..."
2. A Treatise on Meteorology: With a Collection of Meteorological Tables by Elias Loomis (1872)
"Parhelia,—Near those points where halos cut the parhelic circle there is a double
... One is commonly seen near each of the points where the parhelic circle ..."
3. A Treatise on Geometrical Optics by Robert Samuel Heath (1887)
"... the minimum deviation for such rays is equal to 22°, so that the parhelia are
not only on the parhelic circle but on the halo of 22°. ..."
4. Physics of the Air by William Jackson Humphreys (1920)
"parhelic circle.—Very occasionally, a white circle, perhaps faint and tending to
be diffuse, passes through the sun parallel to the horizon and, therefore, ..."
5. A Treatise on Geometrical Optics by Robert Samuel Heath (1887)
"The reflexion of light on the prisms of ice placed in all directions with their
reflecting faces vertical causes the parhelic circle. ..."
6. Elements of Natural Philosophy: For the Use of Schools and Academies by Joseph Anthony Gillet, William James Rolfe (1881)
"parhelic circle.—When a halo is formed around the sun we often notice a "white
... This is called a parhelic circle. It never exhibits prismatic colors like ..."
7. Dictionary of Aviation by Robert Morris Pierce (1911)
"... spots sometimes seen at lhe intersection of the lunar halos with the parhelic
circle; ... same meaning as parhelic circle, see under parhelic. parhelic ..."
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