Happy National Pi Day! Here are a few things you should know about Pi… I’ll try not to be too mathematical:
- Pi is the ratio of a circumference to diameter of a circle.
- It was first called Pi in 1706 by William Jones.
- Pi is the first letter in the Greek word “perimidos” (“perimeter” in English).
- Both π (Piwas) and the letter p are the sixteenth letter in the Greek and English alphabets, respectively.
- The symbol of Pi has been used regularly only for the past maybe 250 years.
- Pi is a never-ending number.
- The approximation of Pi is 3.14.
- The current world record for Pi digits recitation is held by CHAO LU (from China) who in 2005 recited an unbelievable 67,890 digits!
- The 20 digits of Pi: 3.1415926535897932384
- Why March 14? Well, mainly because of the date’s representation as 3/14 in month/day format.
Albert Einstein was born on March 14… or 3/14… 🙂
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