 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.


 Lunar Fogbow Observed in Saxony, Germany

   January 01, 2021

    Nebelbogen-EPOD

   Photographer:  Heiko Ulbricht
   Summary Authors:  Heiko Ulbricht;  Jim Foster
   For the first time in my life I saw a lunar  fogbow, as pictured
   above arching over an agricultural field in Grumbach, Germany. Because
    the Moon was full, this fogbow, also called a  cloudbow, was
   easily visible.

    Droplets that form fogbows are only about 1/10 the  diameter of
   the raindrops that form  rainbows. As a result, there’s greater wave
    interference since the  wavelengths of visible light tend to
   overlap within the tiny droplets. This leads to bows that are not only
    wan in appearance but are somewhat wider than rainbows. Photo taken
   on October 31, 2020. Note that as this happened to be a  Blue Moon,
   being able to observe this fogbow was a bit more special.
   Photo Details: Canon EOS 6D camera; Sigma ART 24 mm; F2.8; 30-second
   exposure; ISO 400
     * Grumbach, Germany Coordinates:  51.0313, 13.5460

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    More...

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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   Earth Science Picture of the Day is a service of the  Universities
   Space Research Association.

https://epod.usra.edu
 
