Monday, March 14, is Pi Day. Get it? 3/14?
Pi – that glorious and notorious number starting 3.14159265358979323846 but stretching to infinity – is incredibly important. It expresses the ratio of a circle’s circumference to its diameter. It is represented by the sixteenth letter of the Greek alphabet – π. And it goes on forever without falling into a repeating pattern (making it an irrational number).
But does it actually exist?