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Eureʹka

,

or rather Heureʹka (I have found it out). The exclamation of Archimeʹdēs, the Syracusan philosopher, when he discovered how to test the purity of Hiʹero’s crown. The tale is, that Hiero delivered a certain weight of gold to a workman, to be made into a votive crown, but suspecting that the workman had alloyed the gold with an inferior metal, asked Archimedes to test the crown. The philosopher went to bathe, and, in stepping into the bath, which was quite full, observed that some of the water ran over. It immediately struck him that a body must remove its own bulk of water when it is immersed, and putting his idea to the test, found his surmise to be correct. Now then, for the crown. Silver is lighter than gold, therefore a pound-weight of silver will be more bulky than a pound-weight of gold, and being of greater bulk will remove more water. Vitruʹvius says “When the idea flashed across his mind, the philosopher jumped out of the bath exclaiming, ‘Heureʹka! heureʹka!ʹ and, without waiting to dress himself, ran home to try the experiment.” Dryden has mistaken the quantity in the lines

“The deist thinks he stands on firmer ground,

Cries ‘Euʹreka!ʹ the mighty secret’s found.”


Religio Laici, 42, 43.

But Byron has preserved the right quantity—


“Now we clap


Our hands and cry ‘Eureka!ʹ”


Childe Harold, iv. st. 81.

⁂ The omission of the initial H finds a parallel in our word udometer for “hudometer,” emerods for “hemorrhoids,” erpetology for “herpetology” on the other hand, we write humble-pie for “umble-pie.”

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Entry taken from Dictionary of Phrase and Fable, edited by the Rev. E. Cobham Brewer, LL.D. and revised in 1895.

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Eugenius
Eugubine Tables
Eulalie (St.)
Eulen-spiegel (Thyl)
Eumæos
Eumenides [the good-tempered goddesses]
Eumnestes [Memory]
Eunomians
Eupatridæ
Euphemisms
Eureka
Eurus
Eurydicē
Eustathians
Eutychians
Euxine Sea (The)
Evangelic Doctor (The)
Evangeline.
Evangelist
Evangelists
Evans (Sir Hugh)

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Archimedes Principle

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Eureka