Pi Day Celebration

Pi Day Celebrations by physics professor

Today, 14 March, Pi day is being celebrated by the people related to science and especially to physics. Pi Day is an annual celebration of the mathematical constant π (pi). But question is; why is it celebrated on this day? First let me remind you the numerical value of π, that’s equal to 3.14. Now if we consider date in format month/day, then this day, March 14 has got a sequence of numbers found in value of π that are 3,1,4 three significant figures.

We all know π is mostly used whenever we’re to deal to curves and circular shapes and most of us are totally unaware of where this number actually came from, oops!!!

It came from circle, but how, let me show you. 

Suppose we’ve a circle of certain radius. Now if a line segment starts from one edge of a circle, travels directly through the centre and stops at the other edge of the circle then it is called “Diameter” of the circle. 

Now to find π, we take this diameter out of circle and put it on side as shown. Imagine we put some pressure on left and right sides of the diameter; we are actually doing kind of bending it as a result it adopts the shape of curve. And our goal in doing this is to create a curve that could fit nicely along the circumference of the circle. Once we are done with bending, we’ve an arc of length equal to length of the diameter. 

Now if we take and put this arc on the outside of the circle, so what we are trying to do here is we’re trying to figure out how many diameters does it take to cover the entire circumference of the circle one time. So if we keep taking these diameters and bending them around the circle then what we will find out that it takes exactly 3.14159….. , and whole bunch of extra numbers that follow, times to get around the circle to cover the entire circumference.

It has been shown that it takes three whole diameters plus .14159 portion of another diameter to entirely cover a circle. So essentially π tells the amount of times that the diameter will have to be kind of wrapped around the circumference of a circle to cover circumference exactly one time.

I hope this explanation would help readers to get through the question if it ever