MSGID: 1:317/3 63275cdb   
   PID: hpt/lnx 1.9.0-cur 2019-01-08   
   TID: hpt/lnx 1.9.0-cur 2019-01-08   
    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.   
      
      
    Sylvanshine   
      
      September 16, 2022   
      
      
       SylvanshineWeb   
      
      Photographer:  Marco Meniero   
      
      Summary Author:  Marco Meniero   
      
      I finally managed to photograph an optical phenomenon that’s eluded me   
      for years, namely the  sylvanshine, a faint reflection of light   
      produced by micro-drops of water on the leaves of trees. See slighter   
      brighter patches adjacent to the arrows on the above photo.   
      Essentially,  dew drops on waxy leaves  reflects beams of   
      sunlight back toward the observer -- a type of  backscatter   
      mechanism.   
      
      The phenomenon was explained in 1994 by  Professor Alistair Fraser,   
      an expert in meteorological optics. According to his analysis, the wax   
      on the leaves causes the water to form beads, which in effect become   
       micro-lenses, focusing the light to a spot on the leaf's surface.   
      The image at this spot is then directed in the opposite direction. This   
      effect can even make certain trees appear snow-covered on moonlit   
      summer nights. Photo taken from Viterbo Airport, on September 6, 2022,   
      at 09:38 a.m. local time.   
      
      Photo details: Nikon Z9 camera; Nikon S 14-24 lens; 2.8; 32 ISO; f /   
      3.2; 1/160 second exposure.   
      
      
      Viterbo Airport, Italy Coordinates: 42.436111, 12.061667   
      
      
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      Virginia  Twilight Comparison at Curitiba, Brazil, Before and Post   
      Eruption of Hunga Tonga  Pollen and Flying Seeds  Volcanic   
      Sunsets Observed from Mutare, Zimbabwe in 2022  Distortion of the   
      Setting Moon and Lower Mock Mirage   
       More...   
      
   Atmospheric Effects Links   
      
        *  Atmospheric Optics   
        *  Optic Picture of Day: Gruppo Astrofili Galileo Galilei   
        *  Color and Light in Nature   
        *  The Colors of Twillight and Sunset   
        *  Refraction Index   
        *  Image Gallery: Atmospheric Effects   
        *  What is a Rainbow?   
      
   -   
      Earth Science Picture of the Day is a service of the  Universities   
      Space Research Association.   
      
   https://epod.usra.edu   
       
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