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Pi Day Google Doodle Celebrates 30th Anniversary

Pi Day Google Doodle Celebrates 30th Anniversary

Google shared behind-the-scene action of making the Google Doodle on Pi Day.

Google on Wednesday celebrated the 30th anniversary of the mathematical constant Pi, a fundamental element of several mathematical fields, with a doodle of actual pies.

Whether you're celebrating math or food (or both) today, the Pi Day Doodle will probably get your mouth watering more than it will get your brain working. As Google explains in its blog, Pi Day observers often mark the day with a slice of their favorite pie.

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Pi Day was first celebrated by physicist Larry Shaw at the Exploratorium in San Francisco nearly 30 years ago and incidentally in 2009, the United States House of Representatives voted in favour of designating 3/14 as Pi Day.

As we celebrate again in 2018, here are some Pi Day facts you should know. Pi, which is quite popular among students around the world as it represents the ratio of the circumference of any circle to its diameter. Also the surface area and volume of a sphere make use of the value of pi in their formulas. Though modern mathematicians have calculated more than one trillion decimal places beyond the standard "3.14", pi is an irrational number that continues on to infinity. It was however, William Jones, a mathematician from Wales, who first gave the Greek letter its current mathematical definition.

But adding new digits is little more than a pastime for mathematics fanatics: NASA's Jet Propulsion lab only uses 15 digits to calculate interplanetary travel, while mathematician James Grime argues that just 39 digits of pi is enough to calculate the circumference of the known universe.