Eureka (word)
The exclamation 'Eureka!' is attributed to the ancient Greek scholar Archimedes. He reportedly proclaimed "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 and ran naked through the streets of Syracuse.
Eruca sativa
Arugula (American English) or rocket (British English) ("Eruca sativa"; syns. "E. vesicaria" subsp. "sativa" (Miller) Thell., "Brassica eruca" L.) is an edible annual plant in the family Brassicaceae used as a leaf vegetable for its fresh peppery flavor. Other common names include garden rocket, (British, Australian, South African, Irish and New Zealand English), and eruca. Some additional names are "rocket salad", "rucola", "rucoli", "rugula", "colewort", and "roquette". "Eruca sativa", which is widely popular as a salad vegetable, is a species of "Eruca" native to the Mediterranean region, from Morocco and Portugal in the west to Syria, Lebanon, and Turkey in the east.