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

Google Doodle marks 30th year of Pi Day, the date that takes its digits from mathematics constant pi

Today, March 14, is no typical Wednesday - it's Pi Day - and Google is celebrating the occasion with a special Doodle and pie recipe, courtesy of one of the world's most renowned pastry chefs.

In 2010 as well, a Google Doodle was dedicated to Pi Day. Dubbed Pi Day, this comes right after Google recognised William Henry Perkins who had first discovered a synthetic purple coloured dye used in clothing and painting. Therefore, it is an irrational number which is less than infinity.

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.

Did you know that there is Pi language?

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Pi, denoted by the Greek letter "π", has been part of human knowledge for millennia, but it wasn't until 1988 that physicist Larry Shaw organized what is now recognized as the first "Pi Day" celebration at the San Francisco Exploratorium science museum. The Pilish dialect was invented, in which the numbers of letters in successive words matched the digits of pi. Wondering how? Draw a circle with a protractor and then measure its diameter or radius with a ruler.

March 14 is celebrated as Pi Day when the date lines up in the numbers of the famous constant. The ancient Babylonians calculated pi roughly 4,000 years ago.

But many observe the day with a different sort of circle, in the form of pie, or pizza. It features math problems for calculating Martian earthquakes, helium rain on Jupiter and the rotation rate of the asteroid 'Oumuamua.

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