Rainbow

We as a whole have seen a rainbow, at some point or the other. It is an excellent sight. A rainbow is a curve or a bow of seven hues, that shows up in the sky. 

We see a rainbow just when there is daylight and downpour simultaneously. 

It shows up when raindrops go about as crystals. 

They split the white daylight into its essential hues. The rainbow is certifiably not a genuine article however a hallucination. In antiquated occasions individuals trusted it was the bow of Indra, The ruler of Gods. 

Image source.. https://www.smithsonianmag.com/smart-news/not-all-rainbows-have-every-color-180957605/