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Happy Pi Day celebration at SXSW

Happy Pi Day—today is March 14 or 3/14. This is the day that math lovers around the country celebrate Pi, by well, eating pies, throwing pies and talking about the significance of Pi, according to a March 14 report in the Washington Post.

Pi, you may recall from elementary school, is the number that defines the ratio of a circle's circumference to its diameter, which is commonly referred to as 3.14. But pi is irrational, which means that pi is really an infinite, non-repeating decimal that starts with 3.14 but continues without end. In Dec. 2013, computers calculated pi to 12 trillion digits (3.141592653....). Believe it or not, some areas around the around the globe hold contests to see who can remember the most consecutive digits in pi. According to the “Pi World Ranking List” the world record belongs to Chao Lu of China who recited the first 67,890 digits of pi, in order.

On Thursday evening in Austin, the sight of the SXSW festival, the company “AirSign” organized the pi celebration, “Pi in the Sky”. This awesome aerial stunt involved five synchronized airplanes, which wrote the first 34 characters in the pi sequence in quarter mile square dot-matrix style numbers across the sky in a 100 mile arc.

Check out the video!

Meanwhile, while SXSW is hosting a “Renegade Craft Fair: SXSW Edition” and Lady Gaga delivers the SXSW keynote tonight, Princeton is kicking off its Pi Day weekend to celebrate both the significance of pi and Albert Einstein's birthday (Einstein was born on March 14, Pi Day). Celebrations at Princeton include walking tours, video contests, Pizza Pi competitions, pie eating contests, pie throwing events, an Albert Einstein Look A Like contest and lots more.

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