Happy Pi Day, America!

Just wanted to wish everyone a very happy Pi Day! What’s Pi day, you ask? Why, it’s the most mathematical of all days, that’s what it is. Today is the day when we celebrate the mathematical constant (and irrational real number) Ï€ (3.14) which is the ratio of a circle’s circumference to its diameter (in Euclidean geometry, if you care about such things). Of course, you already know that. I was just saying it in case you got a temporary case of amnesia and forgot this major lesson from geometry class.

Pi

And what’s even better, at 3 PM it’ll be even MORE Pi day, since Pi isn’t just 3.14, it’s 3.1415. (Actually, Pi is approximately 3.141592653589793… but celebrating it this accurately would be just plain silly.)

So take out your protractors and pencils, boys and girls, stretch your arms and spin on a field, and take some time today to appreciate your car tire (hopefully without the protractor in hand) because today is the day for Ï€. At least in America. The Europeans celebrate it on July 22 (22/7) and the Chinese are way out there, celebrating it on December 21 at 1:13, since the Chinese approximation of Pi is 355/113. But who cares, right? We’re Americans, and just like we don’t care that Canada celebrates Thanksgiving early, so too do we not care that the rest of the world uses different approximations.

By the way March 14th is also Einstein’s birthday, so go out and have some round cake pie.

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