Thursday/ the 25th Annual Pi Day

2008-0199Thursday 3.14 has now come and gone (it’s Friday morning here in the USA), but I was reminded yesterday that it was ‘Pi(e) Day’ : the 25th Annual Pi Day, actually.   Pi Day celebrates the curious mathematical constant that says no matter how small or how large a circle is, its circumference is 3.14* times its diameter.  There is even a geeky website for Pi day, at  http://www.piday.org.  They have a cute t-shirt picture on there that shows 3.14 can be made to read ‘pie’ when looked at in the mirror.   There is also a page that shows pi to a million decimal places.

*3.14 is just the approximate value.  The constant is an irrational number which means it has an infinite amount of decimal places with no pattern.

314-pie-via-zazzle
T-shirt picture from http://www.piday.org that shows ‘3.14’ can be made to read ‘pie’ when looked at in the mirror. I want one!

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