Sunday, March 14, 2010

Pi Day

Today is Pi Day (March 14 or 3.14), celebrating history's most famous mathematical constant. Pi relates the circumference and diameter of a circle. It is an infinite and nonrepeating number. Pi has an intriguing history dating to ancient Egypt.

I had noted Daniel Tammet's extraordinary recitation of Pi before. Amazingly, the world record is three times his record as Lu Chao recited 67,890 digits from memory over 24 hours.

By the way, today is also Albert Einstein's birthday.

(image credit: Pi poster, Slice of MIT)