Forgot your password? Retrieve it. If by any chance you spot an inappropriate image within your search results please use this form to let us know, and we'll take care of it shortly. Term » Definition. Word in Definition. Princeton's WordNet 0. Wiktionary 5. Webster Dictionary 3. Hence, an expression of triumph concerning a discovery Etymology: [Gr. I have found, perfect indicative of to find.
Freebase 0. Chambers 20th Century Dictionary 0. The Nuttall Encyclopedia 0. How to pronounce eureka? Alex US English. David US English. Mark US English. So he realized that if a certain amount of silver had been substituted for the same amount of gold, the crown would occupy a larger space compared to an identical amount of pure gold.
He then reasoned that if the goldsmith had had indeed made a crown of pure gold, then the volume displaced should be the same as that of a bar of pure gold of the same mass. See an animation here.
Now it was time to check out the crown. Then he took a bar of pure gold of the same mass and compared the volume of spilled water to determine if crown is indeed made of pure gold. Surprise, surprise — the numbers were different! The crown displaced more water than the piece of gold. So, indeed the king had been cheated by the goldsmith. You can probably guess as to what happened to the goldsmith! Archimedes wrote about this experiment in his book, On Floating Bodies.
The famous 17th century astronomer and physicist, Galileo Galilei was a big admirer of Archimedes. In Galileo's plan, if the crown was made of pure gold, the buoyant forces on the crown and the gold bars would be the same and the balance would remain horizontal. This would happen because Archimedes's principle states that the same weight of the same substance must occupy the same volume, whatever the shape.
If the crown was impure, it would have a slightly larger volume than one of pure gold remember, since silver is less dense than gold, it takes up more space than the equivalent weight of gold. Immersed in water, a larger-volume crown would be buoyed more than the matching gold bar; this would cause the balance to tip, with the crown side higher than the side containing the pure gold bar.
In Physics, this Archimedes' Eureka moment is called the Archimedes Principle, which states that when a body is immersed in a liquid, it experiences an upward buoyant force, which is equal to the weight of the liquid displaced by the body. The absence of a contemporary source for this anecdote has done nothing to diminish its popularity over the centuries. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'eureka.
Send us feedback. See more words from the same year. Accessed 12 Nov. More Definitions for eureka. See the full definition for eureka in the English Language Learners Dictionary. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Log in Sign Up. Save Word. A dispatcher relayed instructions from a Eureka detective to the arresting deputies. Not just one of his films but all of them from Performance through to Eureka.
They mounted into the buggy, Dorothy holding Eureka safe in her lap. Dorothy held Eureka in her arms and bade her friends a fond good-bye. You owe the Eureka , as your share of the assessment, two dollars and forty cents.
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