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Pi has been known for almost 4000 years—but even if we calculated the number of seconds in those 4000 years and calculated pi to that number of places, we would still only be approximating its actual value. Here’s a brief history of finding pi:
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www.exploratorium.edu/pi/history_of_pi/index.html
www.exploratorium.edu/pi/history_of_pi/index.html
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The value of Pi has a great value in our scientific life, the importance of that value was gained through the ages. The fact that the ratio of the circumference to the diameter of a circle is constant has been known for so long that it is quite umtraceable.
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members.tripod.com/egyptonline/history.htm
members.tripod.com/egyptonline/history.htm
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A very brief history of pi; Pi is a very old number. We know that the Egyptians and the Babylonians knew about the existence of the constant ratio pi, although they didn't know its value nearly as well as we do today. ... Deriving Pi: Buffon's Needle Method; Facts About Pi; Finding Pi; History of Calculating Pi;
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mathforum.org/dr.math/faq/faq.pi.html
mathforum.org/dr.math/faq/faq.pi.html
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You can see more about the history of π in the History topic: Squaring the circle and you can see a Chronology of how calculations of π have developed over the years. References (30 books/articles)
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www-history.mcs.st-andrews.ac.uk/history/HistTopics/Pi_...
www-history.mcs.st-andrews.ac.uk/history/HistTopics/Pi_through_the_ages.html
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3.1415926535 - history, mystery, facts and philosophy of Pi the infinite irrational mathematical number. ... Breezy narratives tell the history of Pi and the quirky stories of those obsessed with it; sidebars recount fascinating Pi trivia; dozens of snippets and factoids reveal Pi's many fascinating facets of Mother Nature...
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briantaylor.com/Pi.htm
briantaylor.com/Pi.htm
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Pi - Wikipedia, the free encyclopedia
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Pi or π is a mathematical constant whose value is the ratio of any circle's circumference to its diameter in Euclidean space; this is the same value as the ratio of a circle's area to the square of...
en.wikipedia.org/wiki/Pi
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(But knowing why this is true, as well as knowing the exact value of this ratio, is another story.) The "easy" history of concerns the ongoing story of our attempts to improve upon our estimates of . This page offers a brief survey of a few of the more famous early approximations to .
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personal.bgsu.edu/~carother/pi/Pi2.html
personal.bgsu.edu/~carother/pi/Pi2.html
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The History of π ... In the long history of the number π, there have been many twists and turns, many inconsistencies that reflect the condition of the human race as a whole. ... Through each major period of world history and in each regional area, the state of intellectual thought, the state of mathematics, and hence the...
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library.thinkquest.org/C0110195/history/history.html
library.thinkquest.org/C0110195/history/history.html
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