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出典:Wiktionary
出典:『Wiktionary』 (2010/10/22 18:39 UTC 版)
parhelic circle (複数形 parhelic circles)
出典:Wikipedia
出典:『Wikipedia』 (2010/10/09 12:26 UTC 版)
A parhelic circle is a halo, an optical phenomenon appearing as a horizontal white line on the same altitude as the sun, or occasionally the Moon. If complete, it stretches all around the sky, but more commonly it only appears in sections.
parhelic circle