Happy Pi Day


The circumference of a circle, regardless of size is 3.14 times longer than the diameter (distance across). Circumference divided by diameter is a mathematical constant known as Pi. By definition Pi is a mathematical constant because it isn’t changed by the size of numbers it’s used to equate. Pi is irrational, meaning it has an infinite number of digits which never repeat. In 2018 physicist Peter Trueb calculated Pi to 22.4 trillion digits – 22,459,157,718,361 to be precise. Limitless as Pi may be, NASA’s Jet Propulsion Laboratory requires a mere 15 Pi digits to calculate interplanetary travel, mathematician James Grime argues 39 digits is enough to calculate circumference of the known universe. In 1988 physicist Larry Shaw organized the first Pi Day at San Francisco’s Exploratorium science museum on 3.14. In 2009 U.S. Congress officially recognized the fourteenth day of the third month as Pi Day.

Antiquity was no stranger…

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