Archimedes was a Greek scientist. He discovered the principle, subsequently named after him, after noticing that the water in a bathtub overflowed when he stepped into it. He ran through the streets shouting “Eureka!”, which means “I have got it”. This knowledge helped him to determine the purity of the gold in the crown made for the king.
His work in the field of Geometry and Mechanics made him famous. His understanding of levers, pulleys, wheelsand-axle helped the Greek army in its war with Roman army.