Eureka (word) "Eureka! Eureka!" after he had stepped into a bath and noticed that the water level rose, whereupon he suddenly understood that the volume of water displaced must be equal to the volume of the part of his body he had submerged. (This relation is "not" what is known as Archimedes' principle—that deals with the "upthrust" experienced by a body immersed in a fluid.) He then realized that the volume of irregular objects could be measured with precision, a previously intractable problem. He is said to have been so eager to share his discovery that he leapt out of his bathtub
Eureka, Victoria 1864 to commemorate the Eureka Stockade event. The Eureka Stockade Monument was built in 1884 on a site selected by community vote. The monument itself is an obelisk on a plinth flanked by four cannons. A Eureka Trail was devised which follows the movement of the soldiers from the barracks at Camp Street, Ballarat, across Black Hill to the battle site at Eureka. A purpose built interpretation centre for the Eureka Rebellion site was erected in 1998 near the site of the stockade. Designed to be a new landmark for Ballarat, the building featured an enormous sail emblazoned with the