
Pi is a physical constant defined as the ratio of a circle's circumference to its diameter. It is usually written out to a maximum of three decimal places, as 3.141, in math textbooks. But the number, which has fascinated scientists for centuries, has no theoretical limit to the number of decimal places it can be written to. It is a constant that appears in the proofs of many equations defining the universe.
Link: Live Science via AttuWorld
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Tags: Pi | Akira Haraguchi | World Record
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