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, Colorado the last time. Today, the original townsite gravel roads remain, and debris litters the area. The only remaining structure is the Eureka jail, which has been restored. Foundations remain of the Sunnyside mill. Its elevation is 9,862 feet (3,006 m). Eureka, Colorado Eureka is a mining ghost town in San Juan County, Colorado, United States, along the Animas River, between Silverton and Animas Forks. The town derives its name from the Greek interjection Eureka! Charles Baker's group of prospectors found traces of placer gold in the San Juan Mountains in 1860 at Eureka. Forced by the Ute Tribe out in