## Happy Pi Day 2013

It’s March 14 (3.14) and its Pi Day.

Pi Day is an annual celebration of $\pi$ the most popular mathematical constant. Larry Shaw of San Francisco Exploratorium led the first large celebration of Pi Day in 1988, and since then it has spread all  over the world.

Pi Pie (via Wikipedia)

To know more about $\pi$, you might want to read my posts about it.

## Happy Pi Day

March 14 (3.14) is Pi Day. As we all know, Pi (symbol: $\pi$) is a mathematical constant which is the ratio of the circumference of any circle to its diameter.  That means that if we measure the circumference of a circle and divide it with its diameter, then the quotient is always $\pi$. The constant $\pi$ is an irrational number; it starts with 3.14 and continues forever.

Pi Day was created 1988 by Larry Shaw, a physicist at the San Francisco Exploratorium.