Eureka!
When Archimedes discovered the principle of displacement, he was hot on the trail of a clever fraud.
before 215 BC
When Archimedes discovered the principle of displacement, he was hot on the trail of a clever fraud.
before 215 BC
Hiero II (?308 BC – 215 BC), ruler of Syracuse in Sicily (an ancient Greek colony), made a present of a golden crown to a temple in honour of the gods. The crown was commissioned and duly delivered, but Hiero suspected that the craftsman had kept some of the gold and mixed in some lesser metal. So he turned to a relative of his, the mathematican Archimedes, and asked him to do some detective work.
abridged
A CHARGE was made that gold had been abstracted, and an equivalent weight of silver had been added in the manufacture of the crown. Hiero, thinking it an outrage that he had been tricked, and yet not knowing how to detect the theft, requested Archimedes to consider the matter. The latter, while the case was still on his mind, happened to go to the bath, and on getting into a tub observed that the more his body sank into it the more water ran out over the tub. As this pointed out the way to explain the case in question, without a moment’s delay, and transported with joy, he jumped out of the tub and rushed home naked, crying with a loud voice that he had found what he was seeking; for as he ran he shouted repeatedly in Greek, “eureka, eureka!”*
Taking this as the beginning of his discovery, it is said that he made two masses of the same weight as the crown, one of gold and the other of silver. After making them, he filled a large vessel with water to the very brim, and dropped the mass of silver into it.
In Greek, εὖρηκα, “I have found [it]”. A modern Greek would pronounce this EV-ree-ka. In English it is pronounced yoo-REE-ka.