Pi Day

So today is March 14, and in the part of the world that puts months before days, that means it's 3/14 or Pi Day. My friends who are not on break are having various events on their respective campuses. There are bake sales and pi runs (approximately the length of a 5k, or 3.14 miles), and pie-a-prof booths. I am on spring break, and therefore celebrating this fake approximate holiday in a somewhat more staid manner. I had my morning tea in my math mug:

(The sock-in-progress is the handspun from the last post. I'm almost through the gusset on the second sock.)

And I've been watching pi-related videos on youtube. Here are my favorites.
Vi Hart has a whole amazing channel of stuff. This one amuses me, because while she makes the pie crust from scratch, she uses canned filling, which is entirely backward from my pie-making usual. I am neutral on the pi/tau debate, but the math here is excellent. This morning Vi posted a video of herself singing pi, but my favorite of that kind of thing is below.


I've only seen a few Numberphile videos, but I really dig this one. I'm so amused by the process here. Pi calculated in terms of pie. Also note the video length.


This one is just bizarre in a wonderful way. (Warning: there's a little inappropriate language.) I had seen and loved this video a couple years ago, and it turns out it's from Chris Hardwick, the Nerdist, who I have since come to love for other reasons.

As for other celebrations, I don't know. I was thinking of taking myself out to see Life of Pi this afternoon, but I may start knitting a pi shawl instead.