March 14 is Pi Day (Greek letter p or “π”)! That’s as good a reason to celebrate as anything else, but even better: It’s also Albert Einstein’s birthday!
Harken back to your geometry and remember that pi is the ratio of a circle’s circumference to its diameter (3.14…), which is always the same for every circle! We’ve know this for thousands of years. A brief history of pi is provided by the Exploratorium in San Francisco.
Want more pi? Andersen Library can help you learn more with books like The number [pi] (3rd-floor Main Collection, QA484 .E9613 2004), [Pi]: A biography of the world’s most mysterious number (3rd-floor Main Collection, QA484 .P67 2004), and Pi-unleashed (3rd-floor Main Collection, QA484 .A7513 2001), or articles such as “I prefer pi: A brief history and anthology of articles in the American Mathematical Monthly” (a 2015 article available online from the Mathematical Association of America). Wow!
Or, you could always celebrate with some pie or some discounts provided in honor of pi today (see, for example, some suggestions collected by NBC News).