MSGID: 1:317/3 628685c2   
   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.   
      
      
    Four Types of Rainbows Over Taiwan   
      
      May 19, 2022   
      
       202202031719_鹿港å�   
   å°„虹_LeeChiahui_IMG-5796a   
      
      Photographer: Chiahui Lee   
      
      Summary Author:  Meiying Lee;  Cadan Cummings   
      
      The photo above features multiple types of rainbows visible after a   
      rain event near  Lukang, Taiwan. If you look closely, there are at   
      least four rainbows in the photo. The first two are the  primary and   
      secondary rainbows visible in the center of the image. Primary and   
      secondary rainbows are the most common types of bows and are created   
      when light is  reflected and refracted by raindrops suspended in the   
      air. The difference between primary and secondary rainbows is the   
      incoming sunlight is reflected only once inside the rain drop for   
      primary bows, whereas for secondary bows, the light is reflected a   
      multiple time. This additional reflection also causes the secondary bow   
      colors to appear  reversed.   
      
      Curving between the primary and secondary bows is a  reflection   
      rainbow produced by sunlight reflecting off calm water or wet sand.   
      Looking at the waterlogged road ahead, there is a fourth  reflected   
      rainbow noticeably on the shimmering pavement surface. Like the   
      secondary rainbow, reflected rainbow colors appear reversed. However,   
      this additional reflection was due to light being scattered off land   
      features, as opposed to within suspended raindrops. Furthermore, if you   
      look closely, you can also see  supernumerary rainbows on the inside   
      of the primary rainbow.   
        * Lukang, Taiwan Coordinates: 24.0755, 120.4473   
      
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       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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