Archimedes discovered and invented several things throughout his life: Archimedes' principle (one of several apsects involving buoyancy). The Archimedean screw (a fluid-moving device). The...
According to Vitruvius, a new crown in the shape of a laurel wreath had been made for King Hiero II, and Archimedes was asked to determine whether it was of solid gold, or whether silver had been...