Life Of Navin

Random Musings, Random Bullshit.


Circular Rainbow Phenomenon

Well ,most if not all of us have , at some stage in our lives witnessed rainbows.But have you ever seen a Circular Rainbow??...A circular bow?...I must be joking right?? WRONG!!

Circular rainbows do exist....In fact all rainbows are circular.But due to your shadow blocking some of the light , or due to the light disappearing beyond the horizon ,rainbows appear to be ,well , BOWS!!

Descartes through his studies had pointed out that rainbows must be symmetrical.He simplified the study of the rainbow by reducing it to a study of one water droplet and how it interacts with light falling upon it.

In ancient times Rainbows were said to be Godly phenomenon!!

So how can you see a circular rainbow?Well,from the surface of the earth its simply not possible!However when viewed from a high altitude, such as an airplane,circular rainbows can be seen when the angle between the sun, the water droplets, and the plane is around 42 degrees. Here , the rainbow is horizontal, meaning that it is parallel to the ground and hence not blocked by the horizon.

Rainbows are a sure predictor of the direction of rain clouds.There are many proverbs related to rainbows...Among them my favourite...

Rainbow to windward, foul fall the day;
Rainbow to leeward, rain runs away-Anonymous

Simply put ,if the wind is coming from the direction of the rainbow, the rain is heading toward you. Conversely, if the rainbow is in the opposite direction, rain has passed you.



Finally after all these years, here's to the beginning of what was there, what is there and hopefully what will remain!! So here are my thoughts & words -Online!!

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