undergroundnewsroom.com April 22, 2018

Google marks 30 years of Pi mathematical symbol with a formula doodle

15 March 2018, 05:49 | Jenny Fowler

Pi day is observed annually on March 14, also there is an implied pun on the words ‘pi’ and ‘pie

What is Pi day

You may remember "π" the Greek letter from math class.

Pi Day is celebrated every year on March 14-or 3.14-as an homage to the mathematical constant, which is equal to 3.14159. Before we get into a little bit of the history of Pi, let's look at the holiday itself. Interestingly, Albert Einstein's birth anniversary falls on March 14, which is also celebrated at Princeton by organising an annual Einstein look-alike contest. The doodle has been created by award-winning pastry chef Dominique Ansel.

So, what is Pi or 3.14?

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It is a ratio between the perimeter of the circle and diameter of the same circle. Pi has been around for a very long time and references to it can be found as far back as the ancient civilizations of the Egyptians and Babylonians.

The value of pi is 22/7 and today even school children use the value to calculate the circumference and area of a circle by substituting the value of pi in the formulas. The challenge is in its fifth year, and features mathematical problems that can be solved using Pi. The rise of computing technology has led to an arms race of sorts to calculate ever more digits of pi: the current record was set a year ago by Christian physicist Peter Trueb, calculated pi to 22.4 trillion digits - 22,459,157,718,361, to be exact - outpacing the previous record set in 2013 by 9 million digits. For the record, this author went to the calculator to see what the value is. It was a grueling process that took Trueb four months.

Observers often celebrate the day with a slice of their favorite sweet pie to compliment the Greek letter's "delicious sounding name". It would probably be a lot more enjoyable to just eat a piece of pie. For example Cicis Pizza is offering an adult buffet for $3.14 with the purchase of a regular adult buffet.

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