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Chevron Folds, Ireland
Chevron (often relating to V-shaped patterns) may refer to: Science and technology * Chevron (aerospace), sawtooth patterns on some jet engines * Chevron (anatomy), a bone * '' Eulithis testata'', a moth * Chevron (geology), a fold in rock layers * Chevron (land form), a sediment deposit across the earth's surface * Chevron nail, a rare transient fingernail ridge pattern seen in children * Chevron plot, a way of representing data Organisations * ''The Chevron'', former newspaper at the University of Waterloo, Ontario, Canada * Chevron Corporation, an American multinational energy corporation ** '' Chevron U.S.A., Inc. v. Natural Resources Defense Council, Inc.'', 467 U.S. 837 (1984), a United States Supreme Court case dealing with administrative law * Chevron Cars Ltd, a British racing car constructor * Chevron Engineering Ltd, a New Zealand car maker People * Philip Chevron (1957–2013), Irish singer/songwriter * The Chevrons, an American pop group Places * Chevro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chevron (aerospace)
The turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft propulsion. The word "turbofan" is a portmanteau of "turbine" and "fan": the ''turbo'' portion refers to a gas turbine engine which achieves mechanical energy from combustion, and the ''fan'', a ducted fan that uses the mechanical energy from the gas turbine to force air rearwards. Thus, whereas all the air taken in by a turbojet passes through the combustion chamber and turbines, in a turbofan some of that air bypasses these components. A turbofan thus can be thought of as a turbojet being used to drive a ducted fan, with both of these contributing to the thrust. The ratio of the mass-flow of air bypassing the engine core to the mass-flow of air passing through the core is referred to as the bypass ratio. The engine produces thrust through a combination of these two portions working together; engines that use more jet thrust relative to fan thrust are known as ''low-bypass turbofans' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hebron
Hebron ( ar, الخليل or ; he, חֶבְרוֹן ) is a Palestinian. city in the southern West Bank, south of Jerusalem. Nestled in the Judaean Mountains, it lies above sea level. The second-largest city in the West Bank (after East Jerusalem), and the third-largest in the Palestinian territories (after East Jerusalem and Gaza), it has a population of over 215,000 Palestinians (2016), and seven hundred Jewish settlers concentrated on the outskirts of its Old City. It includes the Cave of the Patriarchs, which Jewish, Christian, and Islamic traditions all designate as the burial site of three key patriarchal/ matriarchal couples. The city is often considered one of the four holy cities in Judaism. as well as in Islam. Hebron is considered one of the oldest cities in the Levant. According to the Bible, Abraham settled in Hebron and bought the Cave of the Patriarchs as a burial place for his wife Sarah. Biblical tradition holds that the patriarchs Abraham, Isaac, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rank Insignia
An insignia () is a sign or mark distinguishing a group, grade, rank, or function. It can be a symbol of personal power or that of an official group or governing body. On its own, an insignia is a sign of a specific or general authority and is usually made of metal or fabric. Together, insignias form a decoration with the different elements of a rank, grade, or dignity. There are many types of insignia, including civil and military decorations, crowns, emblems, and coats of arms. Singular/plural "Insignia" can be used either as a plurale tantum word, i.e. unchanged for both singular and plural, or it can take the plural form "insignias", both equally valid options. The singular "insigne" is rarely used. History The use of insignias predates history, both for personal and group (especially military) use. When the insignia was meant to be seen, it was placed at top of a pole or the head of a spear. The Persians used a golden eagle as an insignia, the Assyrians a dove, and the A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Advanced Combat Optical Gunsight
The Advanced Combat Optical Gunsight (ACOG) is a series of prismatic telescopic sights manufactured by Trijicon. The ACOG was originally designed to be used on the M16 rifle and M4 carbine, but Trijicon has also developed ACOG accessories for other firearms. Models provide fixed-power magnification levels from 1.25× to 6×. ACOG reticles are illuminated at night by an internal tritium phosphor. Some versions have an additional daytime reticle illumination via a passive external fiberoptic light pipe or are LED-illuminated using a dry battery. The first ACOG model, known as the TA01, was released in 1987. History The first ACOG model, known as the TA01, was released in 1987. In 1995, United States Special Operations Command selected the 4×32 TA01 as the official scope for the M4 carbine and purchased 12,000 units from Trijicon. Between 2004 and 2005, the ACOG was selected as the official Rifle Combat Optic of the United States Marine Corps, prompting Trijicon to produce 100,000 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trill (music)
The trill (or shake, as it was known from the 16th until the early 20th century) is a musical ornament consisting of a rapid alternation between two adjacent notes, usually a semitone or tone apart, which can be identified with the context of the trillTaylor, Eric. ''The AB Guide to Music Theory: Part I'', p. 92. (compare mordent and tremolo). It is sometimes referred to by the German Triller, the Italian trillo, the French trille or the Spanish trino. A cadential trill is a trill associated with each cadence. A trill provides rhythmic interest, melodic interest, and—through dissonance—harmonic interest. Sometimes it is expected that the trill will end with a turn (by sounding the note below rather than the note above the principal note, immediately before the last sounding of the principal note), or some other variation. Such variations are often marked with a few appoggiaturas following the note bearing the trill indication. Notation In most modern musical notatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angle Brackets
A bracket is either of two tall fore- or back-facing punctuation marks commonly used to isolate a segment of text or data from its surroundings. Typically deployed in symmetric pairs, an individual bracket may be identified as a 'left' or 'right' bracket or, alternatively, an "opening bracket" or "closing bracket", respectively, depending on the directionality of the context. Specific forms of the mark include parentheses (also called "rounded brackets"), square brackets, curly brackets (also called 'braces'), and angle brackets (also called 'chevrons'), as well as various less common pairs of symbols. As well as signifying the overall class of punctuation, the word "bracket" is commonly used to refer to a specific form of bracket, which varies from region to region. In most English-speaking countries, an unqualified word "bracket" refers to the parenthesis (round bracket); in the United States, the square bracket. Various forms of brackets are used in mathematics, with s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guillemet
Guillemets (, also , , ) are a pair of punctuation marks in the form of sideways double chevrons, and , used as quotation marks in a number of languages. In some of these languages "single" guillemets, and , are used for a quotation inside another quotation. Guillemets are not conventionally used in the English language. Terminology Guillemets may also be called angle, Latin, Castilian, Spanish, or French quotes / quotation marks. ''Guillemet'' is a diminutive of the French name ', apparently after the French printer and punchcutter Guillaume Le Bé (1525–1598), though he did not invent the symbols: they first appear in a 1527 book printed by Josse Bade. Some languages derive their word for guillemets analogously: In Adobe Systems font software, its file format specifications, and in all fonts derived from these that contain the characters, the glyph names are incorrectly spelled and (a malapropism: guillemot is actually a species of seabird). Adobe acknowledges the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chevron (insignia)
A chevron (also spelled cheveron, especially in older documents) is a V-shaped mark or symbol, often inverted. The word is usually used in reference to a kind of fret in architecture, or to a badge or insignia used in military or police uniforms to indicate rank or length of service, or in heraldry and the designs of flags (see flag terminology). Ancient history Appearing on pottery and petrographs throughout the ancient world, the chevron can be considered to be one of the oldest symbols in human history, with V-shaped markings occurring as early as the Neolithic era (6th to 5th millennia BC) as part of the Vinča symbols inventory. The Vinča culture responsible for the symbols appear to have used the chevron as part of a larger proto-writing system rather than any sort of heraldic or decorative use, and are not known to have passed the symbol on to any subsequent cultures.Mäder, Michael: ''Ist die Donauschrift Schrift?'' Budapest: Archaeolingua. , (2019), Many comparativ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estadio Chevron
Estadio Chevron (formerly known as Estadio Nacional de Tijuana, Estadio de Beisbol Calimax, and Estadio Gasmart) is a baseball stadium located in Tijuana, Baja California, in Mexico with a capacity of 17,000, all seated. It was built in 1976 with a capacity of 14,000 and named Cerro Colorado Stadium, after a supermarket chain based in Baja California. It was expanded in 2006 to its current capacity of 17,000. The stadium was inaugurated on October 12, 1977 with a game between the Potros de Tijuana and the Águilas de Mexicali of the Mexican Pacific League. In 2004, professional baseball returned, now with a Mexican Baseball League franchise under the name "Toros de Tijuana". The following year would change its name to "Potros de Tijuana", as they were known in their previous iterations and would be from 2005 to 2008. It played host to the Tijuana Cimarrones of the Golden Baseball League for one season in 2010. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chevron Science Center
Chevron Science Center is a landmark academic building at 219 Parkman Avenue in Pittsburgh, Pennsylvania, United States on the campus of the University of Pittsburgh. The 15-story facility, completed in 1974, was designed by Kuhn, Newcomer & Valentour and houses the university's chemistry department. A three-story addition above Ashe Auditorium was completed in 2011. History Between 1910 and 1971, the site of Chevron Science Center had been occupied by the former State Hall, the first building erected upon Pitt's move in the early 20th century to the Oakland campus and at various times home to the university's library, administration, and engineering department. Chevron Science Center's $14.7 million cost ($ million today) was partially offset by a $2 million grant ($ million today) from the National Science Foundation. Its completion brought together under one roof many chemistry facilities that were, at the time, scattered among eight different buildings on Pitt's campus. Upon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chevron Rocks
Chevron Rocks () is a distinctive rock outcrop at the north end of Retrospect Spur, near the head of Hood Glacier in the Queen Maud Mountains. A New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ... party climbed Retrospect Spur during the 1959–60 season. They gave the name Chevron Rocks because of their appearance, resembling the stripes worn by non-commissioned officers. References * Rock formations of the Ross Dependency Dufek Coast {{DufekCoast-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chevron Reef
Chevron Reef, also known as Pratte's Reef, was an artificial reef constructed in 2000 in Santa Monica Bay, offshore from Dockweiler State Beach. It was the first artificial surfing reef in the United States and was the second to be built worldwide. It was removed in 2008. Location The reef was located about 100 yards offshore in 15 feet of water, north of the El Segundo jetty and 200 yards south of the Hyperion sewage treatment plant 1-mile outfall, known locally as "Shitpipe". History In 1984, the California Coastal Commission approved a proposed 900-foot jetty to protect a marine terminal and underwater pipelines at a Chevron facility in El Segundo, California. The Surfrider Foundation fought the decision and an agreement was made that the company would pay $300,000 to build an artificial surfing reef if it could be proved that the jetty caused a substantial decrease in surfable waves. Research demonstrating the jetty's negative effect on surf quality was completed in 1994, but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
