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.
Terem (Russia)
Although the origins of the terem as a Muscovite practice are still a matter of debate among historians, scholars generally agree that the word itself is derived from the Byzantine Greek word "teremnon" (Greek:τέρεμνον), meaning chamber or abode. Its usage in a Russian context has been dated to Kievan times. The word terem is in no way linguistically related to the Arabic word harem, as was mistakenly assumed by foreign travelers to Russia during the Muscovite period, as well as nineteenth-century Russian historians who thought it to be directly derived from the Islamic practice of enclosing the female members of a household. Parallels have been drawn between the terem and the South Asian practice of female physical seclusion, purdah, but this is also problematic due to a lack of evidence suggesting that the Muscovite terem was derived from Asian cultural practices (see Origins and Historiography). Original Muscovite sources often use the work pokoi, but nineteenth-century historians popularized the word terem, which became synonymous with the general practice of elite female seclusion.