Subj : ES Picture of the Day 19  2022
To   : All
From : Dan Richter
Date : Thu May 19 2022 12:00:34

 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_鹿港反射虹_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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