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## The Hidden Life of PI- an appreciation

Pi can be used to describe the geometry of the world.” says Chris Budd of the University of Bath in the UK, “We have to calculate it to very high precision for modern technology such as GPS to work at all.  He also has to add this,”I tell my students that if this formula doesn’t completely blow them away then they simply have no soul,”

The number π is a mathematical constant, the ratio of a circle‘s circumference to its diameter, commonly approximated as 3.14159. It has been represented by the Greek letter “π” since the mid-18th century. . It simply describes how the circumference of a circle varies with its diameter. The ratio of the two is a number called pi.

The mystery of Pi is the relationship an integral part on a two dimension can have with the whole. For example  Area of a circle can be calculated in which we know PI is a constant :A=πr2. This constant does not lose its power a whit even while we need think of the circle in another dimension. For example a sphere: Area of a sphere A=4πr2

This being the case doesn’t this constant speak of its mysterious hold past the dimensions in which we consider the circle? Suppose we introduce Man into this circle does it not define his position in terms of the circle as a shape? The Vitruvian Man with which we associate da Vinci, has Man with outstretched arms inscribed in a circle. Human activities thus are within circumscribed circles where the constant PI holds true.

Pi is roughly 3.14, but not exactly: pi is an irrational number, meaning the digits go on forever without repeating and never repeating itself. This continuity is the flux that has a relevance to the whole. Let us look at history itself. Julius Caesar in his Gallic Wars  writes about the people of Helvetii. These tribes finding they were constrained geographically and ever in a conflict with their Eastern neighbours had to do something. They decided to search for better territories to settle down. They burnt down their villages and fanned out. This diaspora put all the European tribes agog. Each tribe wanted a piece of the action. It is thus man is seized by a constant that has been built in,- and must explain the stuff history is made of. We consider history is made by man but there is a constant which never repeats itself since all the nations are all drawn into the pull and push of the general equation. Pax Romana thus will never repeat as was before neither will caliphate as was in the middle ages.

Background:

The first six digits of pi are 3.14159. It is called pi because π is the first letter of the Greek word “perimetros” or perimeter. But it was not the ancient Greeks who first discussed the value of pi. About 2000BC Mathematicians in the Babylonian Empire, had already figured out that pi was about 25/8, or 3.125. By about 1700 BC, in the Middle Kingdom, Egyptian mathematicians calculated pi to be about 3.16. Archimedes calculated that π was a little bigger than 3.1408 while the Chinese mathematician Liu Hui had calculated that pi was 3.141 (Ack: Wikipedia, quart.us/ BBC-earth/Melissa Hogenboom-20 January 2016)

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