Pi, a mathematical constant denoted by the Greek letter π, is the ratio of a circle's circumference C to its diameter d: π = ...

Physicists are now using principles from quantum mechanics to build a new model of the abstract concept of pi. Or, more ...

March 14, National Pi Day, honors 3.14 (π) the ratio of the circumference of a circle. Whether you're challenging yourself to find how many decimal placements are actually in Pi (π) or you're eating ...

Not matter how you slice it, March 14 has something for everyone. The national holiday has been celebrated for decades now, since the late 1980s, thanks to a San Francisco physicist. Larry Shaw, also ...

While building a simpler model for particle interactions, scientists made a sleek new pi. Representations of pi help scientists use values close to real life without storing a million digits. The ...