 EPOD - a service of USRA

The Earth Science Picture of the Day (EPOD) highlights the diverse processes
and phenomena which shape our planet and our lives. EPOD will collect and
archive photos, imagery, graphics, and artwork with short explanatory
captions and links exemplifying features within the Earth system. The
community is invited to contribute digital imagery, short captions and
relevant links.


 Solar Corona Observed in Fog at Nags Head, North Carolina

   February 02, 2021

    Sun_on_the_Sound_2020-11-26

   Photographer:  Rob Bruner
   Summary Author:  Rob Bruner
   While visiting the  Outer Banks of North Carolina one day this past
   November, the weather was very  foggy throughout the morning and
   into the afternoon. However, by midafternoon, the fog began to break
   up, and  the Sun was partially visible, but then the fog quickly
   rolled back in, considerably reducing the visibility over  Currituck
   Sound. As the fog reappeared, I could see a  corona around the Sun,
   and then noticed its reflection near the shoreline. Fog is composed of
    water droplets that act to deflect ( diffraction process) light
   rather than reflect and refract it, as with  raindrops, which may be
   up to 1,000 times smaller in diameter. Note that smaller droplets tend
   to result in larger diffraction angles and thus a larger corona. Make
   sure to  protect your eyes when looking in the direction of the Sun.
   Photo taken on November 26, 2020.

   Photo Details: Camera: Apple iPhone 11; Software: PaintShop Pro 22.00;
   Exposure Time: 0.0001s (1/18868); Aperture: ƒ/1.8; ISO equivalent: 40;
   Focal Length (35mm): 26
     * Nags Head, North Carolina Coordinates:  35.914719, -75.605147

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Atmospheric Effects Links

     *  Atmospheric Optics
     *  Color and Light in Nature
     *  The Colors of Twillight and Sunset
     *  Refraction Index
     *  Image Gallery: Atmospheric Effects
     *  What is a Rainbow?

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   Space Research Association.

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