Math enthusiasts around the world, from college kids to rocket scientists, celebrate Pi Day on Thursday, which is March 14 or 3/14 — the first three digits of an infinite number with many practical ...

Pi Time is a psychedelic clock made out of fabric and Neopixels, controlled by an Arduino UNO. The clock started out as a quilted Pi symbol. [Chris and Jessica] wanted to make something more around ...

Amazingly, a pie is one of the best ways to illustrate pi. Take the circumference around the pie and divide it by the diameter across the pie. The resulting fraction is pi, a delicious ratio for a ...