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Eureka Books Biography & Facts

Eureka (Ancient Greek: εὕρηκα) is an interjection used to celebrate a discovery or invention. It is a transliteration of an exclamation attributed to Ancient Greek mathematician and inventor Archimedes. Etymology "Eureka" comes from the Ancient Greek word εὕρηκα heúrēka, meaning "I have found (it)", which is the first person singular perfect indicative active of the verb εὑρίσκω heurískō "I find". It is closely related to heuristic, which refers to experience-based techniques for problem-solving, learning, and discovery. Pronunciation The accent of the English word is on the second syllable, following Latin rules of accent, which require that a penult (next-to-last syllable) must be accented if it contains a long vowel. In the Greek pronunciation, the first syllable has a high pitch accent, because the Ancient Greek rules of accent do not force accent to the penult unless the ultima (last syllable) has a long vowel. The long vowels in the first two syllables would sound like a double stress to English ears (as in the phrase Maltese cat). The initial /h/ is dropped in modern Greek and in several other European languages, including Catalan, French, Italian, Spanish, Portuguese, Dutch, and English, but preserved in others, such as Finnish, Danish, and German. Archimedes 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. Archimedes' insight led to the solution of a problem posed by Hiero of Syracuse, on how to assess the purity of an irregular golden votive crown; he had given his goldsmith the pure gold to be used, and correctly suspected he had been cheated by the goldsmith removing gold and adding the same weight of silver. Equipment for weighing objects with a fair amount of precision already existed, and now that Archimedes could also measure volume, their ratio would give the object's density, an important indicator of purity (as gold is nearly twice as dense as silver and therefore has significantly greater weight for the same volume). Authenticity This story first appeared in written form in Vitruvius's books of architecture, two centuries after it supposedly took place. Some scholars have doubted the accuracy of this tale, on the grounds that the votive crown was a fine item, thus an impure crown would displace water only minutely, compared to a pure one. Precise means needed to measure this minute difference was not available at the time. For the problem posed to Archimedes, though, there is a simple method which requires no precision equipment: using a balance, compare the weight of the crown against pure gold. While they are still suspended from the arms of the balance, simultaneously submerge the crown and the gold in water. If the volumes are the same, the balance remains in equilibrium, meaning that their densities are the same and therefore the crown must be pure gold. But if the density of the crown is less (due to being alloyed with another metal like silver), increased buoyancy of the crown results in imbalance. Galileo Galilei himself weighed in on the controversy, suggesting a design for a hydrostatic balance that could be used to compare the dry weight of an object with the weight of the same object submerged in water. Names and mottos California The expression is also the state motto of California, referring to the momentous discovery of gold near Sutter's Mill in 1848. The California State Seal has included the word eureka since its original design by Robert S. Garnett in 1850; the official text from that time describing the seal states that this word's meaning applies "either to the principle involved in the admission of the State or the success of the miner at work". In 1957 the state legislature attempted to make "In God We Trust" the state motto as part of the same post WWII anti-Communist movement that successfully added the term "under God" to the American Pledge of Allegiance in 1954, but this attempt did not succeed and "Eureka" was made the official motto in 1963.The city of Eureka, California, founded in 1850, uses the California State Seal as its official seal. Eureka is a considerable distance from Sutter's Mill, but was the jumping off point of a smaller gold rush in nearby Trinity County, California in 1850. It is the largest of at least eleven remaining US cities and towns named for the exclamation, "eureka!". As a result of the extensive use of the exclamation dating from 1849, there were nearly 40 locales so named by the 1880s in a nation that had none in the 1840s. Many places, works of culture, and other objects have since been named "Eureka"; see Eureka (disambiguation) for a list. Australia "Eureka" was also associated with a gold rush in Ballarat, Victoria, Australia. The Eureka Stockade was a revolt in 1854 by gold miners against unjust mining license fees and a brutal administration supervising the miners. The rebellion demonstrated the refusal of the workers to be dominated by unfair government and laws. The Eureka Stockade has often been referred to as the "birth of democracy" in Australia. Mathematics Another mathematician, Carl Friedrich Gauss, echoed Archimedes when in 1796 he wrote in his diary, "ΕΥΡΗΚΑ! num = Δ + Δ + Δ", referring to his discovery that any positive integer could be expressed as the sum of at most three triangular numbers. This result is now known as Gauss' Eureka theorem and is a special case of what later became known as the Fermat polygonal number theorem. See also Heuristic – Problem-solving method that is sufficient for immediate solutions or approximations Eureka effect – Human experience of suddenly understanding a previously incomprehensible problem or concept Serendipity – Unplanned, fortunate discoveryReferences. Discover the Eureka Books popular books. Find the top 100 most popular Eureka Books books.

Best Seller Eureka Books Books of 2023

  • Eureka synopsis, comments


    William Diehl

    Eureka. It’s what you say when you strike gold. It’s also a town in California where the truth might be buried forever.In New York Times bestselling author William Diehl’s thrillin...

  • The Eureka Key synopsis, comments

    The Eureka Key

    Sarah L. Thomson

    When middle school puzzle master Sam and history wiz Martina win a contest for a summer trip across the US, they discover they've been drafted into something vastly more extrao...

  • Journey to Eureka synopsis, comments

    Journey to Eureka

    Kerry Greenwood

    There are people in the world who will hurt you because they can and they like it: and there are people who will help you because they can and they like it. It is 1854 Llew Jones...

  • The Eureka City Bride synopsis, comments

    The Eureka City Bride

    Cynthia Woolf

    Vivien Fitzhugh gave up her Pinkerton badge to track her best friend’s murderer. His last known location is Eureka City, Nevada. Ninetynine percent of the population are either men...

  • Eureka synopsis, comments


    Chad Orzel

    When it comes to science, too often people say "I just don't have the brains for it" and leave it at that. Why is science so intimidating, and why do people let themselves feel th...

  • Eureka Seven, Vol. 1 synopsis, comments

    Eureka Seven, Vol. 1

    Jinsei Kataoka

    Renton Thurston is a young 14yearold who is tired of his monotonous life. His feelings of frustration come from his life of toil in his grandfather's garage and being the son of an...

  • The Road to Character by David Brooks A Review synopsis, comments

    The Road to Character by David Brooks A Review

    Eureka Books

    The Road to Character by David Brooks | A Review   David Brooks’ The Road to Character examines how cultural and personal morals have altered over the last century, creating a...

  • Eureka Seven, Vol. 5 synopsis, comments

    Eureka Seven, Vol. 5

    Jinsei Kataoka

    Renton has a boring life of lifting [aerial hoverboarding] and living in the shadow of his legendary father, Adrock Thurston. One day his life changes when a LFO called Nirvash cra...

  • Eureka Seven, Vol. 3 synopsis, comments

    Eureka Seven, Vol. 3

    Jinsei Kataoka

    Renton has a boring life of lifting (aerial hoverboarding) and living in the shadow of his legendary father, Adrock Thurston. One day his life changes when a LFO called Nirvash cra...

  • Django Joe Explores Eureka Gulch synopsis, comments

    Django Joe Explores Eureka Gulch

    Louise Nemanich

    This is a childrens picture book ideally suited for ages 47. The main character of the book is a Jeep who sets off to explore an area of the Rocky Mountains. It touches on a disc...

  • The Residence by Kate Andersen Brower A Review synopsis, comments

    The Residence by Kate Andersen Brower A Review

    Eureka Books

    This is a Review of The Residence   Inspired after bingewatching Downton Abbey, a British television show about the relationship between a titled family and their servants, &#...

  • Eureka Seven, Vol. 6 synopsis, comments

    Eureka Seven, Vol. 6

    Jinsei Kataoka

    Renton has a boring life of lifting (aerial hoverboarding) and living in the shadow of his legendary father, Adrock Thurston. One day his life changes when a LFO called Nirvash cra...

  • Eureka Springs synopsis, comments

    Eureka Springs

    June Westphal & Kate Cooper

    How did the unfettered wilderness of the Ozarks, America's early frontier, evolve into a prized health retreat for early pioneers before settling into a beloved historic town? Eure...

  • Eureka Street synopsis, comments

    Eureka Street

    Robert McLiam Wilson

    Belfast, Irlanda del Nord, 1994. In una città ridotta a un campo di battaglia, Chuckie e Jake, protestante il primo, cattolico l’altro, sono legati da profonda amicizia. Chuckie, a...

  • The Eureka Stockade synopsis, comments

    The Eureka Stockade

    Raffaello Carboni

    The only complete firsthand description and analysis of the causes of the attack on the Eureka Stockade, which was published a year after the uprising.

  • The Compound Effect synopsis, comments

    The Compound Effect

    Eureka Books

    PLEASE NOTE: This is a companion to Darren Hardy’s The Compound Effect and NOT the original book.  Preview: The Compound Effect: Jumpstart Your Income, Your Life, Your Success...

  • Body Parts synopsis, comments

    Body Parts

    Caitlin Rother

    The bestselling author delves into the twisted crimes of Wayne Adam Ford.“This kind of frightening and fascinating glimpse into a killer’s mind is rare.” Ron Franscell, New York Ti...

  • How to Teach Quantum Physics to Your Dog synopsis, comments

    How to Teach Quantum Physics to Your Dog

    Chad Orzel

    Learn the basics of quantum physics with this clever, fun, and lighthearted introduction to modern physics based on a series of conversations with Chad Orzel and his dog Emmy.When ...

  • The China Study synopsis, comments

    The China Study

    Eureka Books

    PLEASE NOTE: THIS IS A COMPANION TO THE BOOK AND NOT THE ORIGINAL BOOK.   The China Study by T. Colin Campbell and Thomas M. Campbell, II | Key Takeaways, Analysis & Revie...

  • The Eureka Gambit synopsis, comments

    The Eureka Gambit

    Philip Bosshardt

    Hitler has approved a plot to abduct Roosevelt, Stalin and Churchill as they arrive for the Teheran Conference in November 1943. The plot involves ransoming off the lives of the Bi...

  • Eureka Seven, Vol. 4 synopsis, comments

    Eureka Seven, Vol. 4

    Jinsei Kataoka

    Renton has a boring life of lifting (aerial hoverboarding) and living in the shadow of his legendary father, Adrock Thurston. One day his life changes when a LFO called Nirvash cra...