subhelic arc
Noun
Meaning
subhelic arc (plural subhelic arcs)
A rare halo, formed by internal reflection through ice crystals, that curves upwards from the horizon and touches the tricker arc above the anthelic point.
Noun
subhelic arc (plural subhelic arcs)
A rare halo, formed by internal reflection through ice crystals, that curves upwards from the horizon and touches the tricker arc above the anthelic point.