Pi Day at CMU: March 14
Back in 1999, when I was an
undergraduate, my math friend Dan Bruner and I decided that an
appropriate Pi Day celebration would be to write as many digits of pi
as we could on the sidewalk for everyone to see. We used really big
digits and didn't have very much chalk, but we wrote about 888 (going
from Wean Hall to the University Center) starting at 1:59AM, with our
fingers freezing and our lungs wheezing at the end. In the following
years we did the same, with more and more volunteers (once, our work
was snowed on before daybreak!), each year doubling the number of
digits that we wrote, and also starting a bit earlier in the night and
writing smaller. (Dan eventually graduated but I still organized some
pi writing as a PhD student.) In 2003 we got 8192 digits with the help
of about 20 people, which I thought of as the pinnacle of pi writing.
Unfortunately CMU moved its spring break to overlap Pi Day in 2004,
and with most of my undergraduate friends graduated and most of my
graduate friends working on their theses, I thought that would be the
end of our chalking exploits. But in 2005, some mysterious pi ninjas
unknown to me doubled the record to an amazing 16384 digits! The
tradition lives on anonymously, at least when spring break does not
interfere. If you have some information or pictures about missing
years below, please email Tom!
1999: ~888 digits
2000: 1024 digits
2001: 2048 digits
2002: 4096 digits
2003: 8192 digits
2004: (cancelled)
2005: 16384 digits (courtesy of the mysterious pi ninjas)
2006: ?
2007: ?
2008: ?
2009: ?
2010: ?
2011: 1155 digits (unknown colorful pi volunteers)
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