Although many sought to find it, the calculation of pi, which is also expressed by the fraction 22/7, is commonly credited to Greek mathematician Archimedes of Syracuse more than 2,200 years ago.

Archimedes is the attested author of the first rigorous definition of pi, which he did by way of geometry, using polygons with ever-greater numbers of sides. By 150 CE, Ptolemy had the value of pi ...

When the Romans invaded Syracuse in 214 B.C., Archimedes invented "engines of war" to defend ... Also derives estimate for the value of pi; discovers the principle of buoyancy; and creates a ...

Happy Pi Day! It's March 14 ... Using some basic geometry and trigonometry, Archimedes observed that the length of each of the sides of the inscribed blue hexagon would be 1/2, and the lengths ...

Named for its inventor, the Greek mathematician Archimedes (237-212 BCE), the Archimedes screw is a device for raising water. Essentially, it is a large screw, open at both ends and encased lengthwise ...