• Buffon's Needle, July 19, 2010The last article somehow made it to the fourth page of 43,400 results on Google when I searched for

• Another Piece of Pi, July 28, 2010

• Pi is Forever, September 23, 2010

Principle behind the calculation of pi using a circumscribed polygon.(Rendered by the author using Inkscape). |

π ≈ P/(2R),Archimedes was able to calculate our elementary school value of pi, 22/7, using a circumscribed 96-sided polygon. Ptolomey did the same with a 360-sided polygon, getting the value, 3.141666..., that's correct to three decimal places. Computer techniques have allowed a calculation of pi to 10,000,000,000,050 decimal digits. This was done by Shigeru Kondo, a Japanese systems engineer, on home-built hardware. This is truly overkill. Our present estimate of the diameter of the universe is 93 billion light-years (8.8 x 10

"Somewhere inside the digits of pi is a representation for all of us -- the atomic coordinates of all our atoms, our genetic code, all our thoughts, all our memories. Given this fact, all of us are alive, and hopefully happy, in pi. Pi makes us live forever. We all lead virtual lives in pi. We are immortal."You can try to find parts of yourself in pi, at this web site.[7]

- David H. Bailey, Peter B. Borwein and Simon Plouffe,"On the Rapid Computation of Various Polylogarithmic Constants". Mathematics of Computation, vol. 66, no. 218 (April 1997), pp. 903-913.
- David H. Bailey, "The BBP Algorithm for Pi, September 17, 2006
- Tsz-Wo Sze, "The Two Quadrillionth Bit of Pi is 0! Distributed Computation of Pi with Apache Hadoop," arXiv Preprint Server, August 18, 2010.
- David H. Bailey, "BBP Code Directory" (Updated September 8, 2006)
- Cliff Pickover, "We are in Digits of Pi and Live Forever," May 2003.
- David Whitehouse, "How random is pi?," BBC News, July 23, 2002.
- David G. Andersen, The Pi Searcher Web Site
- David Blatner, Joy of Pi Web Site.
- Eric W. Weisstein, "Pi Digits." From MathWorld--A Wolfram Web Resource.