The Surprising Origins Of Pi Day
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A holiday devoted to a math constant might not sound exciting. But Pi Day, celebrated every March 14 (3/14) in the United States, is an exception. The day usually starts with activities celebrating pi (π) — the ratio of a circle’s circumference to its diameter (about 3.14). But it almost always ends with a tasty slice of pie.
The fun tradition is credited to Larry Shaw, a physicist at San Francisco’s Exploratorium. On March 14, 1988, he convinced colleagues to walk around the museum's "Pi Shrine"— a circular plaque inscribed with the first 100 digits of pi — and enjoy fruit pies.
The event was such a hit that Pi Day became an annual celebration at the museum. Visitors enjoyed pi‑themed activities and sampled pies of all kinds, from sweet to savory. As word spread, schools, libraries, and universities across the nation began celebrating as well. In 2009, Congress officially recognized March 14 as National Pi Day.
Celebrations
Today, Pi Day is observed in many creative ways. Schools host pi-recitation contests, and math enthusiasts gather for circle-themed games. Some participants even challenge themselves to eat exactly 3.14 slices of pie.
The Massachusetts Institute of Technology (MIT) releases admission decisions to prospective students on Pi Day. However, instead of 3:14 pm, they are posted at 6:28 pm ET. The time is a nod to tau (τ), a number equal to twice pi. Some mathematicians prefer tau because it makes certain circle formulas simpler. Tau even has its own special day on June 28 (6/28).
Many female television meteorologists wear purple on Pi Day as part of the "Dress for STEM" campaign. It aims to inspire more girls to pursue careers in science, technology, engineering, and math.
March 14 is also Albert Einstein's birthday. The connection is especially meaningful in Princeton, New Jersey, where the scientist spent the last two decades of his life. The city marks both occasions with numerous events. They include pie-eating contests and an Einstein look-alike competition. The festivities also feature science-themed tours and lectures honoring the famous physicist's contributions.
The origin of pi
The celebrations are fairly new, but pi has been known for thousands of years. The Babylonians were the first to estimate pi about 4,000 years ago. They gave it a value of 3.125. A few hundred years later, the ancient Egyptians refined it to 3.1605.
Archimedes of Syracuse (287-212 BC) was the first to calculate pi mathematically. He gave it a range of between 3.1408 and 3.1429. Considering these early mathematicians did not even have calculators, their precision was truly impressive. Today, with advanced computing, pi has been calculated to trillions of digits. But for most, 3.14 — or even a slice of pie — is enough to celebrate!
Happy Pi(e) Day!
Resources: Wikipedia.org, exploratorium.edu, History.com
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29 Comments
rutijabobyfu1 daypi is kool >:3
gejukujovory7 daysI like pie- dapocuje-1756418990177 daysok kinda cool ngl
gewujuzubypu8 daysPi is the best. for me, it is easy
winter_soldier8 daysok, pi day sounds ok- suhowufezumy8 daysyummy
sdasds9 daysAll the digits of pi i know :3.14159265358979323
fuwyvupyfysu9 dayslokey pi is my fav math term ngl
jellyjuggalo9 daysMy teeachr sayd that we get partie for pi day ans i aam frist
trucminshsh10 daysthis website is lwk fun woahh
