In a sunny day of Hungary a large 22-degree halo appears around the sun. Such halos around the Moon or the sun occurs when high thin clouds containing millions of tiny ice crystals cover much of the sky. Each ice crystal acts like a miniature lens. Because most of the crystals have a similar elongated hexagonal shape, light entering one crystal face and exiting through the opposing face refracts 22 degrees, which corresponds to the radius of the Sun or the Moon Halo.



comments (2)

  • Азат Reply

    Классная фотка!)))

    December 11, 2010 at 10:41 am
  • Азат Reply

    Cool picture!)))

    December 12, 2010 at 7:09 am

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