Two scientists were surprised to find pi lurking in a quantum mechanics formula for the energy states of the hydrogen atom. “We didn’t just find pi,” says Tamar Friedmann, a visiting assistant ...

Add Yahoo as a preferred source to see more of our stories on Google. For more than two millennia, mathematicians have produced a growing heap of pi equations in their ongoing search for methods to ...

A quiet idea from 1914 still shapes new science. A young Srinivasa Ramanujan once shared bold pi equations. Today those same lines guide hard work in physics. A fresh study now links his ideas to ...

Pi Day is upon us again, for those who note today’s date in the format 3/14 (March 14). But rather than talk about Pi Day itself, as I did last year, this year I want to talk about Pi and mathematical ...