posted by: Dunia Andromeda
A rainbow is an optical and
meteorological phenomenon that
causes a spectrum of light to appear in the sky when the Sun shines on to droplets of moisture in the
Earth’s atmosphere. It takes the form of a multicolored arc. Rainbows caused by sunlight always
appear in the section of sky directly opposite the sun – which is 42 degrees from the direction
opposite the Sun.
Rainbows can be caused by many forms of airborne water. These include
not only rain, also mist, spray, and airborne dew. The rainbow is not
located at a specific distance,
but comes from any water droplets viewed from a certain angle relative
to the Sun’s rays.
In the case of primary rainbow which is the lowest and the brightest
kind of rainbow with the color red staying at the outer arc and violet
at the inner section. You may have seen a double rainbow – which is a
second arc forming above or outside of the primary rainbow. The
formation of colors are opposite of that of the primary ones (red at
inner arc while violet is located at the outer arc).
A rainbow spans a continuous spectrum of colors. For colors seen by a
normal human eye, the most commonly cited and remembered sequence, in
English, is Newton’s sevenfold red, orange, yellow, green, blue, indigo
and violet.
Rainbows appear in many visual artworks and often have symbolic
significance. These beautiful and colorful works of nature are often
present not only in paintings and
other digital arts but
oftentimes a subject in photography as well. Rainbows are popular
subjects in photography because of its colorful nature which generally
describes them as beautiful and peaceful arches in the sky.
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