What is "zeta"

Zeta \Ze"ta\, n. [L., from Gr. ?. Cf. Zed.] A Greek letter [[zeta]] corresponding to our z.

sixth letter of the Greek alphabet; see zed.

n. 1 The name of the sixth letter of the modern Greek alphabet ((term Ζ Greek), (term ζ Greek)) preceded by epsilon ((term Ε Greek), (term ε Greek)) and followed by eta, ((term Η Greek), (term η Greek)); or the seventh letter in the ancient Greek alphabet, in which it is preceded by digamma ((term Ϝ Ancient Greek), (term ϝ Ancient Greek)) 2 (context mathematics English) A mathematical function formally known as the Riemann zeta function.

n. the 6th letter of the Greek alphabet

Zéta is a Hungarian wine grape, a crossing of Furmint and Bouvier. It was introduced to the Tokaj-Hegyalja wine region of Hungary in 1951 and authorized for production in 1990. Previously known as Oremus, its name was changed to Zéta in 1999. Its main asset is a particular aptitude for high sugar concentrations, early ripening and susceptibility for botrytis.

As Oremus, it was used in the production of Tokaji wines.

Zeta is the sixth letter of the Greek alphabet.

Zeta or ZETA may also refer to:

Zeta ( Cyrillic: Зета, ) is a river in Montenegro. Its source is under the mountain Vojnik, and flows eastwards for until it confluences into the Morača River just north of Podgorica.

Zeta is a marque of automobile which was produced in Australia from 1963 to 1965 by South Australian manufacturing company Lightburn and Co.

An established manufacturer of cement mixers and washing machines, Lightburn and Co. built the cars in its factory in the Adelaide suburb of Camden Park. The first Zeta model was introduced in 1963 at a price of £595. Production ceased in 1965 with the last vehicles sold in 1966 and total sales of fewer than 400 vehicles.

Zeta is a Mexican magazine published every Friday in Tijuana by Choix Editores. Zeta is distributed primarily in Baja California, in the cities of Tijuana, Tecate, Rosarito, Ensenada, and Mexicali.

It was founded in 1980 by Jesús Blancornelas, known as "the spiritual godfather of modern Mexican journalism", along with Héctor Félix Miranda and Francisco Ortiz Franco. The magazine regularly runs exposés on corruption in local and federal governments as well as on organized crime and drug trafficking, resulting in numerous threats and attacks against its staff. Félix was murdered in 1988 by bodyguards of politician Jorge Hank Rhon, while Ortiz was assassinated in 2004, apparently for his coverage of the Tijuana Cartel. Blancornelas was also ambushed by gunmen in 1997; though one of his bodyguards was killed, but Blancornelas managed to survive his wounds. Following Blancornelas's death of stomach cancer in 2006, Adela Navarro Bello became Zeta's editor-in-chief. Both Blancornelas and Navarro received numerous international awards for their work with the magazine.

More than half of the journalists working for the Zeta report on sport events, entertainment, and art, but the front-page stories on the newspaper are about drug trafficking and political corruption. Since its creation, the newspaper chronicled the rise and workings of the Tijuana Cartel, one of Mexico's oldest drug trafficking organizations.

ZETA, short for "Zero Energy Thermonuclear Assembly", was a major experiment in the early history of fusion power research. It was the ultimate device in a series of UK designs using the Z-pinch confinement technique, and the first large-scale fusion machine to be built. ZETA sparked an intense national rivalry with the United States pinch and stellarator programs, and as ZETA was much larger and more powerful than US machines, it was expected that it would put the UK in the lead in the fusion race.

ZETA went into operation in 1957, and on each experimental run a burst of neutrons was measured. Neutrons are the most obvious results of nuclear fusion reactions, which was a positive development. Temperature measurements suggested the reactor was operating between 1 and 5 million degrees, a temperature that would produce low rates of fusion just about perfectly explaining the quantities of neutrons being seen. Early results were released in September 1957, and the following January an extensive review was released with great fanfare. Front-page articles in major newspapers announced the breakthrough as a major step on the road to unlimited power.

US researchers questioned ZETA's results, which was initially dismissed by UK observers as jingoism, but over time similar US experiments demonstrated the same neutron bursts at temperatures that were clearly not high enough for fusion. Further experiments demonstrated that the temperature measurements were accounting only for the hottest portions of the fuel, and the bulk of the system was much cooler. The neutrons were later explained as the byproduct of instabilities in the fuel. The ZETA claims had to be publicly withdrawn, casting a chill over the entire fusion establishment. Most work on the z-pinch concept as a road to fusion had ended by 1961.

In spite of ZETA's failure to achieve fusion, and the PR disaster that it created, the device would go on to have a long experimental lifetime and produced numerous important advances in the field. In one line of development, the use of lasers to more accurately measure the temperature was well developed at ZETA, and later used to confirm the results of the Soviet tokamak approach. In 1974, while poring over ZETA test runs it was noticed that the plasma self-stabilized after the power was turned off. This has led to the modern reversed field pinch concept, which sees continued development to this day.

Zeta was a medieval region and province of the Serbian Grand Principality, Kingdom, and Empire.

Zeta is a small neotropical genus of potter wasps currently containing 4 species. Three of them have restricted distributions: Zeta confusum is found only in Cuba; Zeta abdominalis is spread through several caribbean islands ( Jamaica, Hispaniola, Puerto Rico, Virgin Islands and Antigua, with three presently recognized subspecies) and Zeta mendozanum is restricted to the Monte and Patagonia regions of Argentina. Zeta argillaceum, on the other hand, is a very common, widespread and variable species found in the continental Americas from the southern United States (where it was probably introduced) to central Argentina. The wide range of color variation of this species has led to the recognition of a number of subspecies and varieties currently treated as simple synonyms.