Mystery behind the magical number pi(𝜋 )

Most of us read in our textbooks that pi 𝜋 is a mathematical constant, an irrational number whose value is 3.14169..... and so on which is ...

Most of us read in our textbooks that pi 𝜋 is a mathematical constant, an irrational number whose value is 3.14169..... and so on which is also defined as the ratio of circumference of circle to it's diameter. It's a magical number as it doesn't depend how big or small the circle is it's value remains constant. But I am share you some unknown secrets behind the invention of pi. And why many  great mathematicians and even super computers could not solve the mystery behind it.

History of pi(𝜋 )

Pi was known in existence from about more than 4000 years ago. By 2000 BC the Babylonians and Egyptians found  the importance of pi, that every circle has a constant ratio of circumference and it's diameter and later many greek and other mathematicians calculated the value of 𝜋.In between 287-212BC great ancient mathematician Archimedes of Syracuse first calculated the value of pi. The pi is the sixteenth letter in the greek alphabet. This symbol of 𝜋 began using in 1700s which was introduced by William Jones. Archimedes finds the approximate value of pi by calculating the length of perimeter of a regular polygon which is inscribed in a circle and the perimeter of polygon which circumcised a circle. In his experiment he came to known that the value of pi lies between the two perimeters of polygon. He repeated his experiment in 12, 24 ,48 and 96 sided polygon and successfully found that value of pi was greater than 3+10/11 and less than 3+1/7 or we can say ( 3.1408<𝜋 <3.1429) which is close to thr real value of pi which is 3.1415.

 Archimedes polygon method

It is believed that the great indian mathematician Aryabhata already calculated the value of pi upto 4 decimal places about 4700 years ago. With such great precision and sharp brain he calculated the extremely accurate value of pi which is 3.1416 without ant measuring device, he also calculated the circumference of the earth with the same concept.

Many great scientist and mathematicians calculated the value of pie in his own methods. Issac Newton was one of them in 1665 he used his infinite series to calculate pi up to 15 decimal places where as great Indian mathematician Ramanujan compute about 137 decimal places of pi with great accuracy. In the modern world the calculation of pi is done by super computers that could compute trillions of its value but we cannot find any end of pi.

Secrets of pi 

• There is a day of pi which we called pi day it is celebrated every year on 14 march as value of pi is 3.14 in which 3 represent month and 14 represent day. And on that day the great scientist Albert Einstein was born and Stephen Hawking died which is 14 march 2018.

• Pi is a non terminating, non repeating number which never ends and till we don't know it's exact value.

• In the million values of pi there is not any sequence of 123456 that made it the most unique number.

• Many great mathematicians and scientist gave their whole life in calculating the value of pi. In 1873 William Shanks calculated about 527 digits of pi accurately. He had a record of manual approximation of pi.

• To calculate the value of is even hectic for computers through super computers we find more than trillions value of pi but it still a mystery in mathematics.

• Pi has a relation with Egyptians mythology, Egyptians believed that pyramids of Giza built on its principles.