Pi Day 2015: meet the man who invented π

Pi

 

It is a work of great historical interest because it is where the symbol π appears for the first time in scientific literature to denote the ratio of a circle’s circumference to its diameter.

Jones realized that the decimal 3.141592 … never ends and that it cannot be expressed precisely.

It is thought that he chose π either because it is first letter of the word for periphery (περιφέρεια) or because it is the first letter of the word for perimeter (περίμετρος). (Or because of both).

 

Read More @ TheGuardian

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Pi Day 2015: meet the man who invented π

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