Lowitz arc

Lowitz's diagram of solar halos (1790). The Sun (labeled αβa) lies within the two overlapping circles near the bottom of the image. Sun dogs (labeled bx and cy) lie to the Sun's left and right. The

A Lowitz arc is an optical phenomenon that occurs in the atmosphere; specifically, it is a rare type of ice crystal halo that forms a luminous arc which extends inwards from a sun dog (parhelion) and may continue above or below the sun.

单词	Lowitz arc
释义	Lowitz arc 英语百科 Lowitz arc A Lowitz arc is an optical phenomenon that occurs in the atmosphere; specifically, it is a rare type of ice crystal halo that forms a luminous arc which extends inwards from a sun dog (parhelion) and may continue above or below the sun.
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