RAINBOW
What causes a rainbow to form?
A rainbow is an optical and meteorological
phenomenon that is caused by both reflection and refraction of light in water
droplets in the Earth's atmosphere, resulting in a spectrum of colors in the
sky. It takes the form of a multicolored arc. Rainbows caused by sunlight
always appear in the section of sky directly opposite the sun. At the edge
however, these colored disclosed overlap
so display their individual colors producing the rainbow arc. This is caused by
the light reflecting twice inside the water droplets.
First multiple rays of light enter a drop of
water from one direction typically a straight line from the Sun, they then
reflect off the back of the drop, and fan out as they leave the drop. The light
leaving the drop then a rainbow is spread over a wide viewing angle.
A rainbow is one of
our atmosphere's most exquisite and marvelous creations; "one of the most
spectacular light shows observed on earth.Rainbow appears in the sky at the end
of the rain. It forms a semicircle going from one end of the earth to the
other.
Here the double rainbow picture quit rarely found with the correct composition photography.
BELIEVE GOD CREATION :
People believe that
if a rainbow appears after the rain, it is an indication that there will be no
more rains. In Hindi, rainbow is called 'Indra Dhanush' which means the Bow of
Lord Indra. According to Hindu mythology Lord Indra is the god of rain. The
rainbow looks miraculously beautiful. Its sight is very soothing to the eye.
INTERESTING THING ABOUT RAINBOW
A rainbow is in
fact a full circle of light. However, due to most people viewing a rainbow on
the ground we only see a semi-circle or arc of the rainbow.A rainbow is not
situated at a specified distance, instead it will always be visible to a person
at the precise angle freshwater droplets reflect the light which is 42 degrees
in the opposite direction of the sun. A
rainbow is not an object, it cannot be approached or physically touched. No two
people see the same rainbow, in fact even our individual eyes see slightly
different rainbows. If someone appears to be standing under a rainbow you can
see, they will see a different rainbow at the same angle but further away..
SIR ISAAC NEWTON EXPERIMENT :
Sir Isaac Newton
identified the 7 colors of the visible spectrum that together make up white
light. All of which are present in a rainbow in the order red, orange, yellow,
green, blue, indigo and violet . Specific starting or ending spot, it all
depends on where the observers location is relative to the sun. Scientists say
that when sunlight passes through a thin medium to a denser medium, all the
seven colours which are present in the
white light form a semi-circular rainbow.
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| More over that , rainbow colours uses in many aspect arts including painting , fashion , accessories and many more .
Painter can manufacture the colors of the rainbow, for they create color by
mixing. As example painting above shown that concept Night Rainbow - Oil painting on canvas Leonid Afremov .
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references : The books ; Isaac Newton and Physics for kids.
www. popularrainbowgallery.com
Newton Experiment with glass prism.com
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