In 1655 the English mathematician John Wallis published a book in which he derived a formula for pi as the product of an infinite series of ratios. Now researchers from the University of Rochester, in ...

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 ...

Mr. Newton said he could see so far because he stood on the shoulders of giants. Would it be too much of a boast to say that my own shoulders are among those sturdy ones that support his glory? - John ...

Hidden trend: Wallis's formula for pi emerges from Bohr's hydrogen model. (Courtesy: iStockphoto/Greyfebruary) A nearly 400 year-old formula for pi has been spotted ...