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Skywriters wrote the digits of pi above SXSW, and it was awesome

In anticipation of Pi Day, a squadron of skywriters flew over the South By Southwest festival in Austin, Tex. Thursday evening, writing out a decimal approximation of the ratio of the circumference of a circle to its diameter.

The planes were representing AirSign, an aerial advertising agency. Click below to learn how Archimedes developed the first approximation of pi.

Max Ehrenfreund | March 14, 2014 at 8:49 am
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