We are surrounded by atoms, molecules, clocks, balls, planets, the Sun, and the list goes on. All the above objects or matter are considered circular in 2-dimensions. It is easier to measure the length of a line using a ruler. The circumference of a wall clock can be measured by tracing a string around the clock and measuring the distance between endpoints using a ruler.

Back in the stone age, the wheelbarrow was used to transport goods to different locations. The wheel attached to it was not circular enough, which made a troublesome experience in transportation. Measurement came into the mind of people that a perfectly circular wheel must have a diameter of 7 units and a circumference of 22 units.

# What is Pi?

Pi is the 16th alphabet of Greek literature same as P, the 16th alphabet of English literature. Mathematicians have found out when the ratio of circumference to the diameter of a circle is taken, irrespective of the size of the circle, the answer is always Pi.

Source: Nasa |

The value of Pi is estimated to be about 3.141592653589793238 up to 18 decimal digits or simply 22/7 in-fraction. If we cut several pieces of string equal in length to the diameter, we will need a little more than three of them to cover the circumference of the circle.

Source: Amazing Archimedes |

In the ancient world, Babylonians, Egyptians, Greeks, Chinese and Indian
mathematicians had estimated the value of Pi using different methods. The first
calculation of π was done by **Archimedes of Syracuse **(287–212
BC). He draws the polygon inscribed within the circle and the polygon within
which the circle was circumscribed.

He could only find the approximate value of Pi within close limits. With
a similar approach **Zu Chongzhi **(429–501 BC), a Chinese
mathematician and astronomer came with the ratio of circumference to the
diameter of a circle as 355/113.

To date, the exact value of Pi is still a mystery, cannot be placed on a
number line. The value of Pi goes on...... to make it an irrational number. The
fraction 22/7 = ** 3.14**2857 is accurate up to 2 decimals only
and 355/113 =

**035 is only accurate up to 8 decimals. Although**

__3.14159292__**3.14**is sufficient enough for simple calculations.

The most accurate value of
Pi up to 50,000,000,000,000 digits (50 trillion) was found out by ** Timothy
Mullican** in Alabama, United States on 29th January 2020 and recorded
himself in the

**Guinness Book of World Records.**He ran

**Chudnovsky's algorithm**on the supercomputer and took 8 months in total.

**Uses of Pi**

In basic mathematics, Pi is used to find the area and circumference of a circle. For building and construction, quantum physics, communications, medical procedures, air travel, etc., every estimation is incomplete without Pi. NASA regularly uses it in calculating trajectories of spacecraft, the size of craters, and dimensions of extrasolar planets. The size of an atom, periodic and oscillating systems like pendulums, electromagnetic waves, and even music theory are explained using Pi. In general, the application of Pi is limitless.

**Fun facts**

International Pi day is celebrated on the 14th of March every year. Why
this day? Considering Pi = ** 3.14 **, the 14th day of the 3rd
month of the year, i.e. 14th March is taken.

Famous German Physicist *Albert Einstein* was born on 14th March 1979 and
well-known English theoretical Physicist *Stephen Hawking* (remembered for his
book ** A Brief History of time**) passed away on 14th March 2018
at the age of 76, which is a strange coincidence.

*Where there is Mathematics, there will be a Pi.*

Damn crazy

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DeleteLife of π😁😁

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