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Arc of Lowitz

American  
[loh-vits] / ˈloʊ vɪts /
Or Lowitz arc

noun

Meteorology.
  1. a halo or arc of light, occurring infrequently, which extends diagonally downward from a 22° parhelion.


Etymology

Origin of Arc of Lowitz

Named after Tobias Lowitz (1757-1804), German-born chemist, who published a description of a halo display observed in St. Petersburg in 1790