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 World Catalog > Science > Math > Recreations > Specific Numbers > Pi

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World Catalog > Science > Math > Recreations > Specific Numbers > Pi

Pi:

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.

http://www.earthmatrix.com/ancient/pi.htm

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Free Classified Ads Portal

www.graand.com

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.

http://mathforum.org/library/drmath/sets/mid_pi.html

Ask Dr. Math: About Pi

Explains what the constant is and a brief history. Includes resource links.

http://mathforum.org/dr.math/faq/faq.pi.html

Buffon's Needle

An analysis of its relation to Pi and a simulation by George Reese.

http://www.mste.uiuc.edu/reese/buffon/buffon.html

Calculating Pi

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

http://sourceforge.net/projects/projectpi/

A Common Book of Pi

Includes a brief history, a page with different formulas and a list of references.

http://personal.bgsu.edu/~carother/pi/Pi1.html

The Constant Pi

History, formulae, algorithms, programs, records of computation, and references.

http://numbers.computation.free.fr/Constants/Pi/pi.html

Dale's Pi Page

Includes history of Pi, songs and jokes, poems, news and the first 1,000,000 digits.

http://www.geocities.com/SiliconValley/Pines/5945/

Earth Mysteries : Notes on Pi

An introduction to the number Pi and its history.

http://witcombe.sbc.edu/earthmysteries/EMPi.html

Elias' Pi Page

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

http://www.befria.nu/elias/pi/

Fun With Pi

A Topica email list. Archives readable by anyone.

http://lists.topica.com/lists/funwithpi@igc.topica.com/

Harry Smith's Brief History of Pi Calculations

Brief history of Pi calculations from the ancient times to present day.

http://www.geocities.com/hjsmithh/Pi/Records.html

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.

http://briantaylor.com/Pi.htm

How Pi?

Extracting the digits of pi from the SlOka

http://www.geocities.com/ResearchTriangle/Facility/4118/misc/pi.html

How Stuff Works: Pi

Animated graphic helps to explain Pi and the different ways of calculating Pi, with some related links.

http://www.howstuffworks.com/pi.htm

Indiana Pi Bill

Bill proposing new value of pi.

http://tafkac.org/legal/indiana_pi_bill.html

The Joy of Pi

Book, digits, links, facts, and quote.

http://www.joyofpi.com/

Land of Pi

Pi digits, random links, and some downloads.

http://www.geocities.com/landofpi/

Lucy Scale Developments

Pitch, Pi, and other musical paradoxes.

http://www.harmonics.com/lucy/ltindex.html

The Magic Piworld

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

http://www.piworld.de/piworld/mpw_home.htm

A New Approach to the Universal Constant "pi"

A text that tries to prove that pi is 3.1416 exactly.

http://alkyone.com/mak-pi-gr/en/

Pi 3.1416

Mathematics as the language of nature.

http://www.freewebs.com/pi3point1416/

Pi Approximation Day

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

http://www.rebas.se/humor/piapprox.shtml

Pi Land

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

http://www.eveandersson.com/pi/

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.

http://www.ac.wwu.edu/~mnaylor/pi.html

The Pi Pages

Information on Pi, its history, its future, and the people involved in its calculations.

http://oldweb.cecm.sfu.ca/pi/pi.html

Pi Patterns

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

http://www.antigravitypress.com/Math/pi/

Pi, Pi, Mathematical Pi

Parody of the song "Bye Bye Miss American Pie" elaborating on the history of pi.

http://www.vvc.edu/ph/TonerS/mathpi.html

The Pi Song

Written by Joel Gilmore. (Sung to the tune of Supercalifragilisticexpialidocious.)

http://www.physics.uq.edu.au/people/gilmore/humour/the-pi-song/

Pi Through the Ages

History.

http://www-groups.dcs.st-and.ac.uk/~history/HistTopics/Pi_through_the_ages.html

The Pi Trivia Game

History, math, and physics questions.

http://www.eveandersson.com/trivia/

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.

http://www.pi-world-ranking-list.com/

Pi-Dye : Pi and Math T-Shirts and Gifts

Pi and math gifts, t-shirts, clocks, and mugs. Includes some pi news.

http://www.pidye.com/thestorezone/index.php

The Ridiculously Enhanced Pi Page

Information on links for Pi Day.

http://www.exploratorium.edu/pi/

A Slice of Pi Home Page

Features an historic overview of the discovery and estimate methods of pi. formula expressions, and the first 100,000 digits. Some pages use a Geometer's Sketchpad program.

http://www.geom.uiuc.edu/~huberty/math5337/groupe/welcome.html

Three141, a BBP Ruby implementation and a portal about Pi

A Ruby implementation of BBP (Bailey-Borwein-Plouffe formula) and a portal about the Pi. The BBP formula calculates the nth digit of pi without having to retain all the previous digits.

http://www.314159265358979323846264338327950288419716939937510.net

A Tribute to Pi

Club and information.

http://www.acc.umu.se/~olletg/pi/trib.htm

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.

http://library.thinkquest.org/C0110195

Liverpool hit by Torres setback

Liverpool striker Fernando Torres faces a minimum of four weeks on the sidelines because of a hamstring injury.

news.bbc.co.uk

Send your video, pictures and story ideas

Have you got a good story? BBC News wants to hear from you.

news.bbc.co.uk

Mother guilty over Shannon kidnap

Shannon Matthews's mother and co-accused Michael Donovan are convicted of kidnapping the nine-year-old in a plot to claim a £50,000 reward.

news.bbc.co.uk

Canada PM wins parliament delay

Canadian PM Stephen Harper secures a suspension of parliament, saving him from defeat in a confidence vote.

news.bbc.co.uk

Bank cuts UK rates to 57-year low

The Bank of England has cut interest rates by one percentage point from 3% to 2%, their lowest level since 1951.

news.bbc.co.uk

Your pictures

Readers' images of snowfalls across the UK

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Cash glow

How much does a street light cost for one night?

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No decision over Shields pardon

The High Court reserves judgement in the case of jailed Liverpool fan Michael Shields, who has started a pardon bid.

news.bbc.co.uk

Pietersen praises collective move

England captain Kevin Pietersen says he did not have to persuade any of his Test squad to return to India following the Mumbai terror attack.

news.bbc.co.uk

Jobs go at Troubles murder team

The special police team set up to investigate murders during the troubles is to make 75 staff redundant.

news.bbc.co.uk

Child protection review announced

The Scottish Government announces a wide-ranging review of guidance on child protection practices.

news.bbc.co.uk

Nasa delays its next Mars mission

The US space agency (Nasa) has delayed the launch of its Mars Science Laboratory rover mission from 2009 to 2011.

news.bbc.co.uk

US Congresswoman hangs up on Obama

A US Congresswoman hangs up the phone on President-elect Barack Obama, thinking the call is a hoax.

news.bbc.co.uk

Pakistan dilemma

Relations with India strained in wake of the Mumbai attacks

news.bbc.co.uk

DNA database 'breached rights'

Keeping the DNA of two Britons with no convictions was a breach of their human rights, a European court rules.

news.bbc.co.uk

Controversial Lapland theme park closes down

The firm running a Lapland-style theme park in the New Forest criticised by visitors as "hell" and a "scam" close it down.

news.bbc.co.uk

Kenya PM calls for Mugabe removal

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news.bbc.co.uk

Nice smell...

But why else would anyone buy a new car these days?

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Keane resigns as Sunderland boss

Roy Keane stands down as Sunderland manager after 27 months in charge at the Stadium of Light.

news.bbc.co.uk

Interest rates

Which lenders are passing on the rate cuts to customers?

news.bbc.co.uk

Carmakers 'affect entire US economy'

The chairman of the Senate committee deciding whether to rescue the Detroit Three carmakers says the health of the entire US economy is at stake.

news.bbc.co.uk

DNA dilemma

Will European ruling result in more unsolved crimes?

news.bbc.co.uk

Smith accused of raid 'ignorance'

Jacqui Smith is attacked for not knowing a Tory MP was to be arrested, as her predecessor says she should have been told.

news.bbc.co.uk

Menezes family's inquest protest

The family of Jean Charles de Menezes have walked out of the inquest into his death at the Oval Cricket Ground in London in protest.

news.bbc.co.uk

Lie detectors for benefit claims

Voice-recognition lie detectors are used by two Welsh councils in a bid to clamp down on people making false benefits claims.

news.bbc.co.uk