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The Complete Parhelic Circle: A Phenomenon of Atmospheric Optics The parhelic circle, a captivating atmospheric optics phenomenon, has been observed in various locations around the world. One notable sighting occurred in Gotland, Sweden, as captured by MÃ¥ns Hagberg. The image, a composite of two photographs, showcases an unusually complete parhelic circle. Unlike other atmospheric halos such as th
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