See also:

• Science: Math: Geometry: Plane Geometry  (6)

Ancient Pi: Knowers of the Universe - - The concept of pi refers to the constant ratio of the diameter:circumference of any circle; irrespective of the number of degrees contained within that circle. An article in the "Science in Ancient Artwork"-Series by Charles William Johnson.

Archimedes' Approximation of Pi - - Describes the method introduced by Archimedes for aproximating Pi.

Archimedes' Constant - - Information about the constant and some mathematical discussion of the effects.

Ask Dr. Math - Pi - - Dr Math answers over 60 questions submitted by people about pi including questions on the Bible's relationship to it and its relationship to trigonometry.

Ask Dr. Math: About Pi - - Explains what the constant is and a brief history. Includes resource links.

Bailey on Pi - - Briefly explains David Bailey's work with NASA's supercomputers and the development of a workable formula to evaluate Pi for any number of decimal places.

Buffon's Needle - - An analysis of its relation to Pi and a simulation by George Reese.

Calculating Pi - - An open source endeavor for the calculation of this constant. Describes the project, the implemented algorithms for calculatinon and software downloads.

A Common Book of Pi - - Includes a brief history, a page with different formulas and a list of references.

The Constant Pi - - History, formulae, algorithms, programs, records of computation, and references.

Dale's Pi Page - - Includes history of Pi, songs and jokes, poems, news and the first 1,000,000 digits.

Earth Mysteries : Notes on Pi (¼ ) - - An introduction to the number Pi and its history.

Elias' Pi Page - - Includes Pi in the Binary number system, Pi as a sound file and Pi shown in different images.

Fabrice Bellard's PI page - - Showcases digit extraction and FFT multiplication algorithms.

Fun With Pi - - A Topica email list. Archives readable by anyone.

Greg's Page of Pi - - Includes introduction to Pi, 3 pieces of Pi art and links.

History and Philosophy of Pi - - Probably no symbol of infinity in mathematics has evoked as much mystery, romanticism, misconception and human interest as the number and Greek letter of Pi. Interesting facts and trivia about Pi.

How pi? - - Extracting the digits of pi from the SlOk.

How Stuff Works: Pi - - Animated graphic helps to explain Pi and the different ways of calculating Pi, with some related links.

Indiana Pi Bill - - Bill proposing new value of pi.

Is Pi normal? - - An article by Stan Wagon about the idea of normality, first introduced by E. Borel in 1909, is an attempt to formalize the notion of a real number being random.

The Joy of Pi - - Book, digits, links, facts, and quote.

Land of Pi - - Pi digits, random links, and some downloads.

Lucy Scale Developments - - Pitch, Pi, and other musical paradoxes.

The Magic Piworld - - Provides generated pictures and personal signs out of digits of Pi. Also a Picture Gallery, PiSign, PiPhonie.

A New Approach to the Universal Constant "pi" - - A text that tries to prove that pi is 3.1416 exactly.

One Billion Digits of Pi - - Ramanujan, modular equations, and approximations.

Paul's Page of Pi - - Includes introduction on why people would want to calculate Pi, four methods for calculating it, over 8000 digits, poems and music.

Pi 3.1416 - - Mathematics as the language of nature.

Pi Approximation Day - - 22/7 - that is, July 22. For the past few years, people at Chalmers University have celebrated it.

Pi Land - - Fun activities, a Pi trivia game and a Trainer for digit memorization. Pi poetry, artwork, and photography, calculations, digits and book reviews.

pi Mathematics - - Teacher resources, history, activities, and information.

Pi Memorama - - Includes a program that teaches Pi for the Mac, a page on why people learn to recite Pi and pages on how to memorise Pi.

Pi Memorize - - A free windows application used to help memorize the number Pi to 10000 digits.

Pi Patterns - - Images and illustrations created by using the digits of the circle constant.

Pi, Pi, Mathematical Pi - - Parody of the song "Bye Bye Miss American Pie" elaborating on the history of pi.

Pi Shop - - Provides accessories with Pi-Prints on them. Shirts, mugs and bags.

Pi Through the Ages - - History.

The Pi Trivia Game - - History, math, and physics questions.

Pi World Ranking List - - Every sport has its championship. Every sport has its world ranking list. For many who like to memorize numbers, PI is the ultimate number, and it makes sense to create a list for people to get in touch and learn where they stand in the world of memorizers.

The Ridiculously Enhanced Pi Page - - Information on links for Pi Day.

A Tribute to Pi - - Club and information.

The Uselessness of Pi and its Irrational Friends - - Clubs, links, memorizing technique, records, art, and programs.

Your Piece of the Pi - - This site describes pi's history, characteristics, and application. It also includes a distributed computing application for finding a large number of digits.

Science News Online: Pi à la Mode - - An article describing a potential link between two disparate mathematical fields-number theory and chaotic dynamics-that could lead to a proof that every digit of pi occurs with the same frequency. (September 1, 2001)

Randomly Distributed Slices of pi - - An article by Charles Seife about how mathematicians slowly circle in on a proof that pi's unpredictable digits really are as random as they seem. (August 3, 2001)

The 1000 billionth binary digit of PI is '1' ! - - Announcement of the 1000 billionth digit of Pi. (September 22, 1997)