- infralateral tangent arcs
- 下珥
Atmospheric Sciences (English-Chinese) dictionary. 2014.
infralateral tangent arcs
Look at other dictionaries:
Infralateral arc — An infralateral arc (or lower lateral tangent arc) is a rare halo, an optical phenomenon appearing similar to a rainbow under a white parhelic circle. Together with the supralateral arc they are always located outside the seldom observable 46°… … Wikipedia
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46° halo — A 46° halo is a rare and huge halo, together with the smaller 22° halo a circular optical phenomenon centred on the sun. At sun elevations between 15 27°, it is often confused with the more colourful and frequently observed supralateral and… … Wikipedia
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