Today, 3/14, is my favourite unofficial holiday: Pi Day, the day to celebrate the circle. Today we make pi jokes, eat circular foods, and recite as many digits of pi as we can recall.
I’ve had a fondness for π since I learnt about it in high school math. It’s a number that is unknown, yet a constant that’s essential. I’m always on the lookout for pi references (an elusive search). Here’s a quote I love:
…an expansion of pi to only forty-seven decimal places would be sufficiently precise to inscribe a circle around the visible universe that doesn’t deviate from perfect circularity by more than the distance across a single proton.
-Richard Preston, The Mountains of pi, The New Yorker, March 2, 1992
So, have a happy day today, eat something round, and give a mathematician a hug.
- Q:What do you get when you take the sun and divide its circumference by its diameter?
- A: Pi in the sky. (From http://www.mahalo.com/pi-jokes)