## Happy Pi Day

*March 13, 2010*

It’s March 14th today, 3/14, mathematicians celebrate this day as Pi day to mark the importance of constant (3.14) in mathematics and science. Today is also Einstein’s birthday!! Geeks celebrate this day eating pies and discussing the importance of number pi. Till now pi’s value has been determined to 2.7 trillion digits after decimal. There are people who have memorized pi’s values to hundreds and thousands of digits after decimal. Current world record is held by Lu Chao who memorized and recited the value of pi to 67,890 digits, pretty impressive!! As we all know pi is an irrational number and any string of number will be present in number pi somewhere. Try this pi search engine to find where your date of birth or any string of number lies in pi.

*Some more pi trivia:*

- Symbol of pi first used in 1706 by William Jones, but was popular after it was adopted by the Swiss mathematician Leonhard Euler in 1737.
- Historical evidence suggest that Pi was known and approximated by Greeks and Indian mathematicians around 1900 BC.
- Professor Hans-Henrik Stolum, an earth scientist at Cambridge University has calculated the ratio between teh actual length of rivers from source to mouth and their direct length. Although the ratio varies from river to river, the average value is slightly greater than 3, that is to say that the actual length is roughly three times greater than the direct distance. In fact the ratio is approximately 3.14, which is close to the value of the number pi… The ratio of pi is most commonly found for rivers flowing across very gently sloping planes, such as those found in Brazil or the Siberian tundra.
- Pi truncated to 50 decimal places 3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510
- MIT usually sends out its acceptance letter to students on pi day.

So how will you celebrate the pi day? I might use this as an excuse to eat some more strawberry pies from nearby Servatii bakery !!

## 2 Comments Leave a Comment

1.yash kapoor | March 17, 2010 at 7:31 amThis is interesting trivia:)….how much time did u invest in this?

2.admin | March 29, 2010 at 12:07 amYa I found it interesting too… Spent about half an hour, not much ðŸ™‚

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