Tau day marked by opponents of Pi
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https://www.lotterypost.com/thread/233404/2115528Wed, 29 Jun 2011 19:12:46 GMTtime*treattime*treatTau day marked by opponents of Pi
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https://www.lotterypost.com/thread/233404Tue, 28 Jun 2011 23:09:46 GMTCoin Toss 'Tau day' marked by opponents of maths constant pi

By Jason Palmer Science and technology reporter, BBC News

Fans of tau suggest it makes more sense than pi when describing fractions of a circle

The mathematical constant pi is under threat from a group of detractors who will be marking Tau Day on Tuesday.

Tau Day revellers suggest a constant called tau should take its place: twice as large as pi, or about 6.28 - hence the 28 June celebration.