14/03/2026
Happy Pi Day!
That handmade pop-up card from
is such a clever way to celebrate — the "3.14" flipping into "PIE" is the perfect punny tribute to March 14 (3/14 ≈ π).Quick Pi facts: π is the irrational number ≈ 3.14159..., representing the ratio of a circle's circumference to its diameter. It appears everywhere in engineering, physics, and nature, and today also marks Albert Einstein's birthday!About the pastry connection (in 2-3 lines as requested):
The "pie" tradition started because "pi" and "pie" sound identical in English (homophones), and pies are usually round like circles. In 1988, physicist Larry Shaw at the Exploratorium kicked off Pi Day by marching in a circle and serving fruit pies — turning a math pun into a delicious global celebration that's still going strong with pie-eating, pizza "pies," and more sweet (or savory) treats today.