கண் பேசும் வார்த்தைகள் புரிவதில்லை ~ Rainbow !!

 

கண் பேசும் வார்த்தைகள் புரிவதில்லை; காத்திருந்தால் பெண் கனிவதில்லை

ஒரு முகம் மறைய மறு முகம் தெரிய கண்ணாடி இதயம் இல்லை

கடல் கை மூடி  மறைவதில்லை

 

 

Among the beautiful occurrences of Nature -  “rainbow” is an optical phenomenon that appears as a multicolored arc in the sky, caused by refraction and reflection of sunlight by raindrops. It displays the colors of the spectrum, typically red, orange, yellow, green, blue, indigo, and violet, in that order.  

            Rainbows form when sunlight shines on a water droplet, like rain, mist, or spray. Rainbows are the result of the refraction and reflection of light. Both refraction and reflection are phenomena that involve a change in a wave's direction. A refracted wave may appear "bent," while a reflected wave might seem to "bounce back" from a surface or other wavefront.  Light entering a water droplet is refracted. It is then reflected by the back of the droplet. As this reflected light leaves the droplet, it is refracted again, at multiple angles.  

The radius of a rainbow is determined by the water droplets' refractive index.   A droplet with a high refractive index will help produce a rainbow with a smaller radius. Saltwater has a higher refractive index than freshwater, for instance, so rainbows formed by sea spray will be smaller than rainbows formed by rain.  

Rainbows are actually full circles. The antisolar point is the center of the circle. Viewers in aircraft can sometimes see these circular rainbows.  Rainbows always appear in the section of the sky opposite the sun. You'll typically see them during or after a rain shower when the sun is out!  Red has the longest wavelength of visible light, about 650 nanometers. It usually appears on the outer part of a rainbow's arch. Violet has the shortest wavelength (about 400 nanometers) and it usually appears on the inner arch of the rainbow.  At their edges, the colors of a rainbow actually overlap. This produces a sheen of "white" light, making the inside of a rainbow much brighter than the outside. 

The lyrics at the start are from Selvaraghavan’s movie ‘7G Rainbow Colony’ released in 2004 starring Sonia Agarwal and Ravi Krishna, with the music of   Yuvan Shankar Raja. The film’s storyline was  unrequited love 

Rainbow pictures taken a few years ago at different location !

Regards – S Sampathkumar

20.8.2025