eureka

• int！見つけた！
• n.(ユリイカ)人の名前；(西洋の)ユリイカ。

PIE*wereの「見つける」が語源で、語源的にはheuristicと同じ。 さらにPIE*wenの「追い求める」「切望する」が語源で、語源的にはVenusの「願う」「勝ち取る」と同じである可能性もある。 古代ギリシャの物理学者アルキメデスが、王から黄金の冠を与えられ、それが純金かどうかを判断したのが始まりと言われている。と叫んだ。

eureka

eureka: [16] The Greek mathematician Archimedes (c. 287–212 BC) was commissioned by King Hiero II of Syracuse to find out whether the goldsmith who had made a new crown for him had fraudulently mixed some silver in with the gold. In order to do so, Archimedes needed to ascertain the metal’s specific gravity. But how to do this? According to Plutarch, he decided to take a bath to ponder the problem.

He filled the bath too full, and some of the water overflowed – and it suddenly occurred to Archimedes that a pure-gold crown would displace more water if immersed than one made from an alloy. Elated at this piece of lateral thinking, Archimedes is said to have leapt out of the bath shouting heúrēka! ‘I have found!’, the perfect indicative of Greek heurískein ‘find’ (source of English heuristic [19]).

The earliest occurrence of the word in an English text as an exclamation of delight at discovery is in John Dee’s Preface, but there it appears in Greek characters; the first English author to fully naturalize it was probably Henry Fielding in Joseph Andrews 1742; ‘Adams returned overjoyed cring out “Eureka!”’ (The goldsmith, incidentally, had adulterated the gold.)
=> heuristic

eureka

c. 1600, from Greek heureka "I have found (it)," first person singular perfect active indicative of heuriskein "to find" (see heuristic). Supposedly shouted by Archimedes (c. 287-212 B.C.E.) when he solved a problem that had been set to him: determining whether goldsmiths had adulterated the metal in the crown of Hiero II, king of Syracuse.

1. 「 Eureka ！I 've got it！」

「見つけた！見つけた！」

2. Eureka adventitious buds regeneration were investigated.

Eureka 不定芽再生の主な要因。

3. The difference was not significant ( P > 0.05 ) between feeding with and feeding Eureka with Hercules.

一方 Eureka とHerculesの差はいずれも顕著ではない（P> ; 0.05）.

4.This article investigates the physical significance of softening point of Eureka pitch.

本文はユリカアスファルト軟化点の物理的意義を考察した。

5.Carol takes some garments to the Dry Cleaning King in Eureka ，California.

キャロルはカリフォルニア州ユリカ町の「ドライクリーニング大王」に洗濯物を持って行った。