Published: Wed, March 14, 2018
IT | By Lester Massey

Google Doodle: What is Pi day?

Google Doodle: What is Pi day?

The doodle for Wednesday is in honor of Pi Day and features all the delicious ingredients of an apple-caramel pie, created by world-famous pastry chef and cronut creator Dominique Ansel. It was William Jones, a British mathematician, who first gave the Greek letter to represent it and its standard definition. Of course, March 14 hasn't only been around for 30 years, but the date became known for a celebration of both pi the mathematical constant (which first three digits 3.14 looks like 3/14) and pies of all sorts - particularly on Google, apple pie.

Pi represents the ratio between a circle's circumference (perimeter) to its diameter (distance from side to side passing through the center), and is a fundamental element of many mathematical fields, most significantly Geometry. Coincidentally, this is also the birthday of the legendary theoretical physicist Albert Einstein. As Google explains in its blog, Pi Day observers often mark the day with a slice of their favorite pie. It is also used in finding the area of a circle where area = πr².

As we celebrate again in 2018, here are some Pi Day facts you should know. The result comes out to be 3.14 which can extend to quite a few decimal places as mathematicians say that the divisibility continues to trillions. The space agency runs the "Pi in the Sky" challenge every year. This involves the calculation of Martian earthquakes, the helium rain on Jupiter and the rotation rate of asteroids and even the solar eclipse. The day is marked by the internet giant Google with a doodle on its home page.

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