A rainbow is a meteorological phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky. It takes the form of a multicoloured arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun.
During the previous rainy season, I saw a rainbow formed behind our house. I just clicked that. When we see rainbow it always looks more and more attractive. The 7 Colors appeared with rainbow are the primary colors from which all the colors are formed. Combination of all the colors forms white color. i.e. all the colors or lights present at that time. And with the absence of all these 7 colors forms black color. We can form these 7 colors through the refraction procedure by a “prism”.
Bow is the significance of the fighters as described in the epic. Bow was used as a weapon by Lord ShriRamaChandra, Arjuna, Indra, Karna, Laxman, etc. At the time of some some many warriors used “Bow” to attack. In our history, there are many descriptions of the warriors who used bow.
Mainly in the Hindu epic, it considered as the bow of Debaraja Indra. Indra’s weapon, which he used to kill evil Vritra, is the “Bajra” which means “Thunderbolt” in English.. Other alternate iconographic symbolism for him includes a bow (sometimes as a colorful rainbow), a sword, a net, a noose, a hook, or a conch.
As we consider Indra as the lord for rain, the rainbow forms during rainy season. Sometimes it forms but when there is a possibility of rain. Like rainbow there are many natural phenomenon which described in our epic.