Ulloa's ring

Ulloa's ring

[ü′yō·əz ‚riŋ]
(meteorology)
Mentioned in ?
References in periodicals archive ?
As I lay down with the streetlight behind me, I saw the bottom half of this 360[degrees] "Ulloa's Ring" seem to pass across my legs.
Today, it's true, we seldom hear the circumzenithal arc described as being "of Bravais," or a well-developed fogbow referred to as "Ulloa's ring." But some of these sky effects are too complex or rare for the names of their classic observers to be deleted.