Why do you think the rainbow is so colourful and yet you never want to know how it is exactly formed?

The Dusuns of North Borneo recognized the rainbow as the devil's bridge, that's all. Since it was the devil's bridge, no one should point it with a finger, for if anyone did that, the person's finger might become gangrened. But luckily there was an immediate remedy to it, i.e. poke the finger into the mouth like a lolypop sweets and then put the finger under the armpit. When I observed carefully the superstition, it was not that too bad and it wasn't a failure. There are lot of educational and moral value in each supersitition that my ancestors believed.

Scientifically, rainbow formation comes like this: It is formed when the sun's rays pass through the drops of water in the air are doubly refracted and the human eye sees the reflection in the form of a brilliant arch of prismatic colours which we call the RAINBOW. A rainbow is best seen when the rain is falling while the sun is shining." (quoted/partly paraphrased) from the book "Students' Companion," by Wilfred Best (1958):Collins:London and Glasgow.