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Ef. Desired
EF or ef may refer to: Arts and entertainment * Ef (band), a post-rock band from Sweden * ''Ef: A Fairy Tale of the Two.'', a Japanese adult visual novel series by Minori, or its anime adaptations Businesses and organizations * Eagle Forum, an anti-feminist conservative interest group * Earth First!, movement, in environmentalism * Eastern Fare, a music institution and production house in Bangalore, India * EF Education First, an international education organization * The Elias Fund, a non-profit organization * Far Eastern Air Transport (IATA code EF) Linguistics * Ef (Cyrillic) (Ф, ф), a letter in the Cyrillic alphabet * F (F, f), a letter in the Latin alphabet Science Biology and psychology * Ejection fraction, in cardiovascular physiology * Elongation factors, proteins that are important in protein synthesis * Executive functions, a theorized cognitive system in psychology that controls and manages other cognitive processes Physics * Electric field, in physics * Exafara ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ef (band)
Ef (stylized as EF) is a post-rock band from Gothenburg, Sweden. Using little vocals, they feature a wide variety of instruments. Their debut album ''Give me beauty... Or give me death!'' was released in May 2006 on their own label And The Sound Records (ATS Records). They had several tours with around 400 shows in various European countries. In February 2008, the band released their second album ''I Am Responsible'' (ATSR) and March 21, 2008, it was announced on their website that founding member and bass player Mikael Hillergård had left the band. The band continued as a three piece and released their 3rd studio album ''Mourning Golden Morning'' (ATSR) in 2010. Same year they also started to cooperate with recently started record label ''Kapitän Platte'' based in Bielefeld, Germany who released all three albums on vinyl for the very first time. This album also got the band to tour Russia, China, Taiwan and Hong Kong for the very first time. In 2011, the live/touring band m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exafarad
The farad (symbol: F) is the unit of electrical capacitance, the ability of a body to store an electrical charge, in the International System of Units (SI), equivalent to 1 coulomb per volt (C/V). It is named after the English physicist Michael Faraday (1791–1867). In SI base units 1 F = 1 kg−1⋅ m−2⋅ s4⋅ A2. Definition The capacitance of a capacitor is one farad when one coulomb of charge changes the potential between the plates by one volt. Equally, one farad can be described as the capacitance which stores a one-coulomb charge across a potential difference of one volt. The relationship between capacitance, charge, and potential difference is linear. For example, if the potential difference across a capacitor is halved, the quantity of charge stored by that capacitor will also be halved. For most applications, the farad is an impractically large unit of capacitance. Most electrical and electronic applications are covered by the following SI prefixes: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Era Fascista
The ''Era Fascista'' (English: 'Fascist Era') was a calendar era (year numbering) used in the Italian fascism, Fascist-ruled Kingdom of Italy. The March on Rome, or more precisely the accession of Benito Mussolini, Mussolini as Prime Minister of Italy, prime minister on 29 October 1922, is day 1 of ''Epoch, Anno I'' of the ''Era Fascista''. The calendar was introduced in 1926 and became official in ''Anno V'' (1927). Each year of the ''Era Fascista'' was an ''Anno Fascista'', abbreviated ''A.F.'' The ''Era Fascista'' calendar was inspired by the French Republican calendar. ''Era Fascista'' dates often consisted of the Gregorian date followed by the corresponding ''Era Fascista'' year in Roman numerals, as part of Propaganda in Fascist Italy, Fascist propaganda's appropriation of Ancient Rome, ancient Roman iconography. The ''Era Fascista'' year was sometimes written as "''Anno XIX''", "''A. XIX''", or marked "''E.F.''" The calendar was intended to replace the "bourgeois" Greg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extraordinary Form
In the Catholic Church, preconciliar Latin liturgical rites ("preconciliar": before the Second Vatican Council, which began in 1962) coexist with postconciliar rites. In the years following the Second Vatican Council, Pope Paul VI initiated significant changes. Some of Paul VI's contemporaries, who considered the changes to be too drastic, obtained from him limited permission for the continued use of the previous Roman Missal. In the years since, the Holy See has granted varying degrees of permission to celebrate the Roman Rite and other Latin rites in the same manner as before the council. The use of preconciliar rites is associated with traditionalist Catholicism. In the decades immediately after the Second Vatican Council, each of the various grants of permission to use the preconciliar Roman Rite Mass was in the form of an indult (i.e. a concession). The term universal indult was used to describe a hypothetical broadening of these concessionary permissions, but in his 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon EF Lens Mount
The EF lens mount is the standard lens mount on the Canon EOS family of SLR film and digital cameras. EF stands for "Electro-Focus": automatic focusing on EF lenses is handled by a dedicated electric motor built into the lens. Mechanically, it is a Bayonet mount, bayonet-style mount, and all communication between camera and lens takes place through electrical contacts; there are no mechanical levers or plungers. The mount was first introduced in 1987. Canon claims to have produced its 100-millionth EF-series interchangeable lens on April 22, 2014. History The EF mount replaces its predecessor, the Canon FD, FD mount. The standard autofocus lens mounting technology of the time used a motor in the camera body to drive the mechanics of the focus helicoid in the lens by using a transfer lever. The key innovation of the EF series was to use a motor inside the lens itself for focusing. This allowed for autofocusing lenses which did not require mechanical levers in the mount mechani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canon EF Camera
The Canon EF is a manual focus 135 film, 35mm single-lens reflex camera produced by Canon Inc., Canon between 1973 and 1978. It was compatible with Canon's Canon FD, FD-mount lenses. The EF was built as an electro-mechanical version of Canon's top-of-the line wholly mechanical Canon F-1. The shutter is mechanical at all speeds ½ second and faster, but at 1 second and longer the shutter is all electronically controlled, allowing AE exposures from 1/1000 to 30 seconds. The EF shares the F-1's rugged construction and tough metal body. Unlike the F-1, the EF does not support any motor drive for film transport. Neither does it provide any interchangeable viewfinder. Features The Canon EF contained a silicon photocell light meter with a range of Exposure value, EV 18 to EV -2 which measured light in a "central emphasis metering" pattern (also called metering mode#Center-weighted average metering, center weighted average metering) with less influence from the top of the frame, to min ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Cap Climate
An ice cap climate is a polar climate where no mean monthly temperature exceeds . The climate generally covers areas at high altitudes and Polar regions of Earth, polar regions (60–90° north and south latitude), such as Antarctica and some of the northernmost islands of Canada and Russia. Most of Greenland is under the influence of an ice cap climate, although the coasts are prone to more influence from the sea, providing more Tundra climate, tundra climates. Some regions on the islands of Norway's Svalbard, Svalbard Archipelago facilitate an ice cap climate. Areas with ice cap climates are normally covered by a permanent layer of ice and have no vegetation. There is limited animal life in most ice cap climates, which are usually found near the oceanic margins. Although ice cap climates are inhospitable to human life and no civilian communities lie in such climates, there are some research stations scattered in Antarctica and interior Greenland. Description Under the Köppen cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enhanced Fujita Scale
The Enhanced Fujita scale (abbreviated EF-Scale) is a scale that rates tornado intensity based on the severity of the damage a tornado causes. It is used in the United States and France, among other countries. The EF scale is also unofficially used in other countries, including China and Brazil. The rating of a tornado is determined by conducting a tornado damage survey. The scale has the same basic design as the original Fujita scale—six intensity categories from zero to five, representing increasing degrees of damage. It was revised to reflect better examinations of tornado damage surveys, in order to align wind speeds more closely with associated storm damage. Better standardizing and elucidating what was previously subjective and ambiguous, it also adds more types of structures and vegetation, expands degrees of damage, and better accounts for variables such as differences in construction quality. An "EF-Unknown" (EFU) category was later added for tornadoes that cannot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecological Footprint
The ecological footprint measures human demand on natural capital, i.e. the quantity of nature it takes to support people and their economies. It tracks human demand on nature through an ecological accounting system. The accounts contrast the biologically productive area people use to satisfy their consumption to the biologically productive area available within a region, nation, or the world (biocapacity). Biocapacity is the productive area that can regenerate what people demand from nature. Therefore, the metric is a measure of human impact on the environment. As Ecological Footprint accounts measure to what extent human activities operate within the means of our planet, they are a central metric for sustainability. The metric is promoted by the Global Footprint Network which has developed standards to make results comparable. FoDaFo, supported by Global Footprint Network and York University are now providing the national assessments of Footprints and biocapacity. Footprint and b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fermi Level
The Fermi level of a solid-state body is the thermodynamic work required to add one electron to the body. It is a thermodynamic quantity usually denoted by ''μ'' or ''E''F for brevity. The Fermi level does not include the work required to remove the electron from wherever it came from. A precise understanding of the Fermi level—how it relates to electronic band structure in determining electronic properties; how it relates to the voltage and flow of charge in an electronic circuit—is essential to an understanding of solid-state physics. In band structure theory, used in solid state physics to analyze the energy levels in a solid, the Fermi level can be considered to be a hypothetical energy level of an electron, such that at thermodynamic equilibrium this energy level would have a ''50% probability of being occupied at any given time''. The position of the Fermi level in relation to the band energy levels is a crucial factor in determining electrical properties. The Fer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fermi Energy
The Fermi energy is a concept in quantum mechanics usually referring to the energy difference between the highest and lowest occupied single-particle states in a quantum system of non-interacting fermions at absolute zero temperature. In a Fermi gas, the lowest occupied state is taken to have zero kinetic energy, whereas in a metal, the lowest occupied state is typically taken to mean the bottom of the conduction band. The term "Fermi energy" is often used to refer to a different yet closely related concept, the Fermi ''level'' (also called electrochemical potential).The use of the term "Fermi energy" as synonymous with Fermi level (a.k.a. electrochemical potential) is widespread in semiconductor physics. For example:''Electronics (fundamentals And Applications)''by D. Chattopadhyay''Semiconductor Physics and Applications''by Balkanski and Wallis. There are a few key differences between the Fermi level and Fermi energy, at least as they are used in this article: * The Fermi ener ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Field
An electric field (sometimes called E-field) is a field (physics), physical field that surrounds electrically charged particles such as electrons. In classical electromagnetism, the electric field of a single charge (or group of charges) describes their capacity to exert attractive or repulsive forces on another charged object. Charged particles exert attractive forces on each other when the sign of their charges are opposite, one being positive while the other is negative, and repel each other when the signs of the charges are the same. Because these forces are exerted mutually, two charges must be present for the forces to take place. These forces are described by Coulomb's law, which says that the greater the magnitude of the charges, the greater the force, and the greater the distance between them, the weaker the force. Informally, the greater the charge of an object, the stronger its electric field. Similarly, an electric field is stronger nearer charged objects and weaker f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
