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 Springs, Arkansas listed on the National Register of Historic Places in 2000 because of the special nature and quality of its architecture. On May 10, 2014, Eureka Springs became the first city in Arkansas to issue marriage licenses to same-sex couples. On May 12, 2015, Eureka Springs passed a Non-Discrimination Ordinance (Ord. 2223), with voters choosing 579 for to 261 against. It became the first city in Arkansas to have such a law to cover LGBT residents and tourists. But a state law intended to invalidate the anti-discrimination ordinance went into effect July 22, 2015. This Intrastate Commerce Improvement Act, sponsored by