Fact-checked by Grok 2 weeks ago

Chevron

Chevron Corporation is an American multinational energy corporation headquartered in , specializing in the integrated operations of , production, , marketing, and transportation worldwide. The company produces crude oil and ; manufactures transportation fuels, lubricants, , additives, and plastics; and engages in and carbon capture initiatives to meet growing global demand for affordable and reliable energy. Tracing its roots to the Pacific Coast Oil Company, established in 1879 in as one of the state's earliest oil producers, Chevron evolved through key mergers and acquisitions, including the 1911 formation of following of John D. Rockefeller's trust, and the 2001 purchase of , which expanded its global footprint. By the mid-20th century, discoveries in , the U.S. , and other regions positioned it among the largest oil producers, with ongoing operations driving energy security and economic growth in regions like the Permian Basin, Kazakhstan's , and Australia's LNG project. In 2025, Chevron achieved first oil production at a major expansion in , underscoring its focus on long-term resource development amid fluctuating global energy markets. While Chevron's scale and technological advancements have enabled substantial contributions to global energy supply—producing millions of barrels of oil equivalent daily and investing in for lower emissions—the company has faced persistent legal and environmental scrutiny, including allegations of in Ecuador's region, which Chevron has contested as fraudulent, securing favorable rulings from tribunals and U.S. courts. Such disputes highlight tensions between energy production imperatives and claims, often amplified by groups but defended through empirical legal processes rather than unsubstantiated narratives.

Business and organizations

Chevron Corporation

Chevron Corporation is an American multinational energy corporation engaged in integrated operations across the oil and gas value chain, including exploration, production, refining, transportation, and marketing of petroleum products. The company traces its origins to the Pacific Coast Oil Company, established in 1879 in California by a group of explorers seeking to develop local oil resources. It evolved into Standard Oil of California in 1906 following a reorganization and adopted the Chevron name in 1984 after acquiring Gulf Oil Corporation, marking a significant expansion in its refining and marketing capabilities. Headquartered in San Ramon, California, Chevron operates in approximately 180 countries, with a focus on upstream activities in regions such as the Permian Basin, Gulf of Mexico, and Australia, alongside downstream assets including refineries and chemical production. Chevron's business is divided into two primary segments: upstream, which encompasses finding and producing crude oil and , and downstream, involving refining crude into fuels and lubricants, as well as marketing through brands like Chevron and . The company also invests in logistics, via , and emerging lower-carbon technologies such as carbon capture, utilization, and storage (CCUS). In 2024, upstream operations generated the majority of earnings, driven by high-margin production in U.S. plays and (LNG) projects like Gorgon in . Downstream activities include 19 refineries worldwide with a capacity exceeding 1.8 million barrels per day. Chevron employs around 45,000 people globally and emphasizes operational efficiency and technological innovation to maintain competitive advantages in resource extraction. Financially, Chevron reported of $202.8 billion for , reflecting a modest 0.9% increase from the prior year amid fluctuating prices, with net of approximately $21 billion influenced by volumes and markets. In the first half of 2025, quarterly averaged $3 billion, supported by strong flows from operations exceeding $15 billion annually, enabling returns through dividends and buybacks totaling over $14 billion in 2024. A pivotal recent development was the completion of its $53 billion all-stock acquisition of on July 18, 2025, enhancing Chevron's position in Guyana's Stabroek Block and offshore assets, despite initial regulatory delays from reviews and arbitration with . This merger bolsters reserves and capacity, positioning Chevron as one of the largest integrated firms by , around $280 billion as of mid-2025. Under the leadership of Chairman and CEO Michael K. Wirth since 2018, Chevron prioritizes capital discipline, returning over 40% of cash flow to shareholders while allocating investments to high-return projects. The company faces ongoing legal challenges, including a long-standing dispute originating from Texaco's operations in Ecuador's region, where a 2011 Ecuadorian court awarded $9.5 billion in damages for alleged pollution; Chevron maintains these claims are fraudulent, citing U.S. judgments affirming fabricated evidence and rulings in its favor. Environmentally, Chevron has settled U.S. Clean Air Act violations, paying $3.5 million in penalties in 2025 for emissions at facilities, while investing billions in CCUS and biofuels to reduce operational carbon intensity by 20% since 2016 baselines. Critics, often from advocacy groups, highlight historical spills and alleged impacts in regions like and , though Chevron disputes causation and emphasizes compliance with local regulations and remediation efforts verified by independent audits.

Chevron deference

Chevron deference was a doctrine established by the U.S. Supreme Court in Chevron U.S.A., Inc. v. Natural Resources Defense Council, Inc., decided on June 25, 1984. The case arose from a challenge to the Environmental Protection Agency's (EPA) interpretation of the term "stationary source" under the Clean Air Act Amendments of 1977, specifically regarding the EPA's "bubble policy," which treated an entire industrial plant as a single stationary source for permitting new emissions rather than individual pieces of equipment. The Court, in an opinion by Justice John Paul Stevens, upheld the EPA's approach as a permissible construction of ambiguous statutory language. The doctrine articulated a two-step framework for of interpretations of they administer. First, courts determine whether has directly spoken to the precise question at issue; if the intent is clear, both the and courts must give effect to it. Second, if the is silent or ambiguous, courts assess whether the 's interpretation is "permissible," meaning reasonable in light of the statutory scheme, without substituting their own judgment. This deference applied only to interpretations with the force of , such as formal or , and presumed intended to fill gaps due to their expertise and accountability. Over the subsequent four decades, Chevron deference influenced thousands of judicial decisions across regulatory domains, including , healthcare, , and , enabling agencies to adapt statutes to complex or evolving circumstances without frequent congressional amendments. Critics, including some legal scholars and justices, argued it improperly transferred interpretive authority from Article III courts to agencies, eroding and allowing unelected officials to effectively legislate under the guise of interpretation. Proponents countered that it respected congressional delegation to specialized agencies, promoting policy consistency and efficiency. On June 28, 2024, the overruled deference in , a 6-3 decision authored by John Roberts. The case involved commercial fishing vessels challenging a rule requiring them to pay for onboard monitors under the Magnuson-Stevens Act, where the statute did not explicitly authorize such costs. The Court held that the (APA), specifically 5 U.S.C. § 706, mandates courts to "decide all relevant questions of law," requiring independent judicial interpretation of statutes without deferring to agency views on ambiguity. Roberts emphasized that Chevron conflicted with this statutory command and historical judicial primacy in statutory construction, while stare decisis did not justify retention given its inconsistency with the APA and evolving . The ruling preserves Skidmore deference for persuasive agency interpretations but shifts primary authority to courts, potentially increasing litigation over regulations and requiring agencies to provide stronger statutory justifications. Dissenting Justices , , and maintained that Chevron appropriately deferred to agency expertise where Congress left discretion.

Military and insignia

Chevron (rank insignia)

A chevron is a V-shaped , typically worn on the sleeve of a , used to denote enlisted ranks in various armed forces. The term derives from the word for "," reflecting its resemblance to the angled beams of a . In , it originated as a of honor signifying support for a leader or participation in sieges, later adapting to contexts as a symbol of (NCO) authority. The use of chevrons as rank insignia traces to European armies, with French soldiers employing them by 1777 and the standardizing point-down chevrons in 1803—three for sergeants and two for corporals. The adopted chevrons for NCOs in 1821, initially with points down to evoke the heraldic roof symbol, but orientations shifted multiple times: upward in the era for visibility, downward post-1872 to align with British practice, and permanently upward from to symbolize rising authority. In the U.S. Army, chevrons primarily indicate enlisted ranks, with the number and configuration denoting specific grades: one chevron for (E-3), two for (E-5), three for (E-6) often with a rocker below, and up to three chevrons above three rockers for (E-9). Branch-specific devices, such as eagles or stars, may overlay higher grades for distinction. The U.S. and also employ chevrons, though with variations like eagles centered above for petty officers or additional arcs for senior NCOs, reflecting service-specific evolutions from shared heraldic roots.
U.S. Army Enlisted RankChevron Configuration
(E-3)1 upward chevron
(E-5)2 upward chevrons
(E-6)3 upward chevrons + 1 rocker
(E-7)3 upward chevrons + 2 rockers
/ (E-8)3 upward chevrons + 3 rockers (with diamond for First Sergeant)
(E-9)3 upward chevrons + 3 rockers + star
This table illustrates standard configurations as of current regulations, worn on the upper sleeves of service uniforms. Internationally, chevrons appear in forces with similar upward-pointing designs for NCOs, though some nations like retain inverted orientations or integrate national symbols. Reforms, such as the U.S. Air Force's 1976 updates adding eagles and stars, aimed to enhance prestige and distinguish senior roles amid inter-service harmonization.

Heraldry and design

Chevron (heraldry)

The chevron is one of the principal ordinaries in heraldry, formed by two diagonal lines of equal width that converge to create an inverted V-shape, typically positioned centrally on the shield with its base toward the chief and apex toward the base. Derived from the French term chevron, meaning "rafter," it evokes the shape of a gable rafter in architecture. Its dimensions generally occupy about one-fifth of the shield's width when appearing alone, with each arm spanning from the dexter and sinister sides near the base to meet at the honor point in the center, though early depictions often extended it higher toward the chief with a more acute angle. In modern heraldic practice, the angle and height may adjust slightly to accommodate accompanying charges, such as steepening for tall palewise elements above and below. In blazonry, the chevron follows the field description, as in "Gules, a chevron argent," and serves both as a charge and a line of partition for field divisions like per chevron. It frequently appears with accompanying charges blazoned as "a chevron between three [charges]," conventionally placing two in chief above the chevron and one in base below, with charges on the chevron itself denoted by "on" (e.g., "Argent, on a chevron azure three mullets gules"). Only a single chevron is permitted per shield unless diminutives like the narrower chevronel are used, and edge treatments or internal charges maintain orientation aligned with the chevron's slant unless specified otherwise. Variations include the chevron inverted (apex toward chief), chevron throughout (extending fully to all edges), enhanced (raised toward chief), and abased (lowered toward base); edge modifications such as engrailed, embattled, or invecked; and compounded forms like cottised (flanked by parallel lines) or rompu (broken). Multiple chevronels may be braced (interlaced in pairs), as in certain family arms. The motif predates heraldry, appearing in ancient pottery, textiles, and Romanesque architecture as zigzag ornaments, but entered armorial use by the 12th century, prominently in British and French examples—such as the 1277 brass of Sir John D’Aubernoun (Azure, a chevron or)—while remaining rare in German heraldry. Lacking inherent symbolism beyond its structural form, the chevron facilitated identification in battle and differencing among bearers.

Chevron pattern

The chevron pattern consists of repeated V-shaped or inverted V motifs, typically formed by aligned diagonal lines that create a continuous effect without interruptions at the joints. Unlike the related , which features offset or broken zigzags resembling fish skeletons, the chevron maintains uniform angles and seamless connections between elements, often evoking in —hence its name, derived from the word for "rafter." Evidence of the chevron pattern dates to prehistoric and cave paintings, with more structured uses appearing on and architectural friezes as decorative borders around 1800 B.C. Romans adapted it for practical applications, such as paving empire roads circa 600 B.C., where the interlocking V-shapes enhanced durability. By the medieval period, it featured prominently in as a charge on coats of arms, symbolizing protection or rank, and in for ornamental stonework. In textiles, early woolen V-twill fabrics from incorporated the pattern for both aesthetic and structural reinforcement. In design and engineering, the chevron pattern has been applied to flooring since the 16th century, as seen in wooden parquet installations like those at Fontainebleau Palace in 1539, where angled planks formed expansive, symmetrical layouts. Textile uses expanded in the 20th century, with Italian designers Ottavio and Rosita Missoni popularizing bold, colorful chevron weaves in knitwear starting in 1962, influencing modern fashion through symmetrical zigzag prints in apparel and upholstery. Today, it appears in interior design for tiles, wallpapers, and rugs, valued for its dynamic visual flow and scalability across scales, from micro-patterns in fabrics to macro-applications in public architecture. Its enduring appeal stems from optical illusions of movement created by the repeating angles, though precise replication requires careful alignment to avoid distortions.

Science, engineering, and technology

Chevron in aeronautics and engineering

In aeronautics, chevrons refer to sawtooth-shaped serrations applied to the trailing edges of nacelles or exhaust nozzles, designed to mitigate aircraft noise through enhanced aerodynamic mixing. These geometric modifications disrupt the layer between the high-velocity engine exhaust and surrounding ambient air, generating streamwise that accelerates the breakdown of large-scale turbulent structures into smaller eddies, thereby shortening the jet's potential core length and attenuating low-frequency components dominant in jet exhaust. Empirical and flight tests have demonstrated noise reductions of up to 4-5 decibels in sideline and flyover measurements, comparable to a perceived halving of , with penalties typically below 1% at conditions. The technology traces its roots to earlier passive mixing devices like tabs—small protrusions studied in the and for jet noise suppression—which evolved into continuous chevron profiles by the early 2000s through collaborative research by , , and engine manufacturers such as . Initial implementations appeared in 2003 on GE CF34-8C5 engines powering Bombardier CRJ900 regional jets, marking the from experimental prototypes to operational use. 's conducted pivotal scale-model tests in the and early 2000s, confirming the efficacy of chevrons in reducing broadband shock-associated noise and turbulent mixing noise without significant aerodynamic penalties, as validated in full-scale engine demonstrations on business jets by 2005. This development aligned with regulatory pressures from bodies like the (ICAO), which imposed cumulative noise certification limits tightening by 1999 and 2006, incentivizing passive noise-control geometries over active systems. From an engineering standpoint, chevron design parameters—such as penetration depth (typically 1-2% of nozzle diameter), number of lobes (8-12 for optimal vorticity generation), and azimuthal staggering between fan and core streams—must balance noise suppression against potential increases in drag or infrared signature in military applications. Computational fluid dynamics (CFD) simulations, corroborated by large-eddy simulations, reveal that chevrons induce axisymmetric counter-rotating vortex pairs, enhancing scalar mixing rates by 20-50% compared to smooth nozzles, though efficacy diminishes at high nozzle pressure ratios or off-design conditions. In practice, chevrons have been integrated into high-bypass turbofan engines, including the GE GEnx and Rolls-Royce Trent 1000 on the Boeing 787 Dreamliner (certificated in 2011), achieving Chapter 4 noise compliance margins exceeding 10 decibels. While effective for isolated jets, installed configurations near airframes can introduce additional tonal noise from vortex interactions, necessitating hybrid designs or acoustic liners for further optimization. Applications extend to supersonic nozzles, where chevrons suppress impingement tones in short takeoff and vertical landing (STOVL) systems, though trade-offs in thrust vectoring efficiency persist.

Chevron in physics and other sciences

In physics, chevron patterns emerge in the electrohydrodynamic of nematic crystals, forming distinctive defect lattices driven by anisotropic instabilities under applied . These patterns, observed near the conduction regime threshold, consist of herringbone-like structures bifurcating from normal rolls, with their analyzed through numerical models of the underlying nematic . Chevron structures also appear in confined smectic crystals, resulting from rapid of nematic films between planar substrates with opposing azimuthal easy axes, leading to defects that minimize . In colloidal physics, chevron-shaped bands form during the of suspensions, attributed to Marangoni flows and particle accumulation at fronts, as demonstrated by experiments tracking gradients and solidification interfaces. Chevron plots serve as a key tool in for analyzing , plotting the logarithm of observed relaxation rates against denaturant concentration to reveal linear dependencies for folding and unfolding arms, with deviations indicating intermediate states or Hammond effects. These plots, derived from stopped-flow fluorescence or NMR data, enable extraction of intrinsic rates and sensitivity coefficients (m-values), assuming a two-state model where denaturant linearly modulates transition-state energies, though rollovers signal non-two-state in some proteins. Simulations of denaturant-dependent folding reproduce chevron shapes by incorporating collapse kinetics and chain entropy, confirming that barrier positions shift with solvent quality. In , chevron morphologies manifest in deformed semicrystalline polymers, where tensile induces zigzag lamellar orientations via slip and processes, observable via on etched samples. Similar structures occur in surface transformations, exhibiting symmetrical chevron shapes across polished surfaces due to variant intersections and twinning, with implications for assessment using chevron-notched specimens. Chevron-like nanoribbons, synthesized via solution methods and characterized molecularly, display unique electronic properties from their wavy edges, including tunable bandgaps via edge modifications. In , chevron folds represent tight, periodic structures in layered rocks under compression, featuring straight limbs and sharp s formed by instabilities, with involving hinge or layer-parallel shortening as modeled in finite analyses. These folds, common in shear zones, evolve from sinusoidal profiles to chevron shapes through progressive limb rotation and hinge sharpening, verifiable in outcrops via interlimb angles of 10–70 degrees. Coastal chevrons, large U- or V-shaped ridges near shorelines, record paleowind and histories, with orientations and distinguishing aeolian from marine origins, as evidenced by OSL dating and hydrodynamic simulations.

Places

Chevron, Belgium

Chevron is a village and former independent commune now forming a section of the municipality of Stoumont in the Arrondissement of Verviers, , region of . It is situated near the Lienne River, with terrain characterized by steep hills, valleys, prairies, and coniferous forests, providing opportunities for trails such as the 6.5-mile Chevron North loop. The village has approximately 763 residents and includes nearby hamlets like Les Forges. Its economy historically involved mining and foundries, with ongoing significance from local sources. The area features natural CO2-rich groundwaters, contributing to regional geological interest. Chevron holds historical military importance due to fortifications, including bunkers along the Lienne River designed to defend against invasion as part of Belgium's pre-war defensive lines. The vicinity saw intense fighting during the German Ardennes Offensive in , with nearby Stoumont serving as a key battleground where U.S. forces halted advancing SS Panzer units. A commemorative at Rouge Thier marks 16th-century witch persecutions in the region.

Other locations

Chevron Island is a man-made urban island situated in the Nerang River, forming a residential enclave within the Surfers Paradise suburb on Queensland's , . Developed as part of the region's canal system, it bridges Bundall and Surfers Paradise, offering waterfront properties, local amenities, and proximity to the broader tourism and residential areas. The island's layout includes tree-lined streets, cafes, and riverfront access, contributing to its appeal as a quieter alternative to the high-rise density of adjacent Surfers Paradise. In the United States, Chevron designates an unincorporated community in Scott County, . Located in a rural area of the state, it lacks formal municipal boundaries or significant population data in public records, typical of many small Kansas locales tied to agricultural or historical patterns.

People

Individuals with the surname Chevron

(born Philip Ryan; 17 June 1957 – 9 October 2013) was an Irish musician, singer-songwriter, guitarist, and record producer, who adopted the professional surname Chevron. He co-founded the band in in 1976, serving as lead guitarist and contributing to their debut single "Television Screen," which reached the Irish Top 20 and marked one of the first punk hits . The band released two albums before disbanding in 1981, with Chevron later participating in reunions in 2003 until his death. In 1985, Chevron joined the band as lead guitarist, replacing original member temporarily and then permanently contributing to their folk-punk sound blending with energy. He co-wrote the band's signature song "," a commentary on , featured on their 1988 album If I Should Fall from Grace with God, which peaked at number 3 on the . Chevron's tenure with lasted until 1994 and included reunion tours in the 2000s. Diagnosed with throat cancer in 2008, he underwent treatment while continuing sporadic performances until his death in at age 56. The Chevron remains uncommon, with limited other documented notable bearers; historical records trace it primarily to origins denoting a or structural , but no other prominent figures in public records match the professional notability of .

Other uses

Miscellaneous terms and symbols

In , the double chevrons « and » function as guillemets, serving as in languages such as , where the opening mark points rightward and the closing mark leftward to direct attention inward. These V-shaped symbols, termed "guillemets en chevron" in typographic tradition, enclose direct speech or citations, with spaces typically placed inside the marks adjacent to the quoted text. Mathematical notation employs double angle brackets ⟨ and ⟩, alternatively known as chevron brackets, for specialized purposes including in to represent quantum states and inner products. classifies these as mathematical left and right double angle brackets, with index entries explicitly referencing "chevron" to denote their angled form. In computing environments, a single right-pointing chevron > denotes a command prompt in various shells, signaling user input readiness, while its mirrored form < indicates redirection or comparison operations. This usage leverages the symbol's directional V-shape to imply continuation or hierarchy in interfaces like Unix-derived systems.

References

  1. [1]
    Chevron Corporation - Human Energy — Chevron
    Chevron works to meet the world's growing demand for energy by exploring for oil and natural gas; refining and marketing gasoline; producing chemicals and ...Contact Chevron · Who We Are · United States · What We Do
  2. [2]
    Chevron Corp - Company Profile and News - Bloomberg Markets
    Chevron Corporation is an energy company. The Company manufactures crude oil and natural gas, including transportation fuels, lubricants, petrochemicals, ...<|separator|>
  3. [3]
    Chevron Corp Company Profile - Overview - GlobalData
    Chevron Corp (Chevron) is an integrated oil and gas company. It operates in the oil and gas value chain, including exploration and production, ...
  4. [4]
    Our History | Chevron
    Our history began when a group of explorers established the Pacific Coast Oil Co. in 1879. Learn about Chevron's history and how we have evolved over the ...Leading The Way · Spirit Of Standard · Market Expansion
  5. [5]
    Chevron Corporation | Oil, Gas, & Energy Operations - Britannica
    Oct 3, 2025 · Chevron Corporation is a U.S. energy and petroleum corporation founded through the 1906 merger of Pacific Oil Company and Standard Oil ...
  6. [6]
    Chevron Achieves First Oil at Future Growth Project in Kazakhstan
    Jan 24, 2025 · We believe affordable, reliable and ever-cleaner energy is essential to enabling human progress. Chevron produces crude oil and natural gas; ...<|separator|>
  7. [7]
    Ecuador Lawsuit - Chevron.com
    Chevron is defending itself against false allegations that it is responsible for alleged environmental and social harms in the Amazon region of Ecuador.International Tribunal Rules · Appeals Court Affirms RICO... · Background
  8. [8]
  9. [9]
    What We Do — Chevron
    We work every day to provide energy that helps billions of people achieve the benefits of modern life. And to create solutions that will help advance a lower ...
  10. [10]
    Chevron Corporation | Research Starters - EBSCO
    Chevron Corporation is a major American energy company focused on the exploration, production, and refining of oil and natural gas.
  11. [11]
    Chevron Revenue 2011-2025 | CVX - Macrotrends
    Chevron's revenue for the twelve months ending June 30, 2025 was $195.327B, a 2.9% decline year-over-year. 2024 revenue was $202.792B, a 0.92% increase from ...
  12. [12]
    Chevron Completes Acquisition of Hess Corporation
    Jul 18, 2025 · Chevron Corporation (NYSE: CVX) announced today that it has completed its acquisition of Hess Corporation (NYSE: HES) following the ...Missing: major | Show results with:major
  13. [13]
    Chevron Leadership
    Chevron's success is driven by our people and their commitment to get results the right way, learn more about our leadership team.Mike Wirth · R. Hewitt Pate · Mark a. nelson Vice Chairman · Corporate Governance
  14. [14]
    Chevron USA Clean Air Act Settlement | US EPA
    Jul 7, 2025 · Chevron also will pay a $3.5 million civil penalty and spend more than $4 million on further emissions controls and other environmental projects ...Missing: controversies | Show results with:controversies
  15. [15]
    Chevron U.S.A., Inc. v. NRDC | 467 U.S. 837 (1984)
    A government agency must conform to any clear legislative statements when interpreting and applying a law, but courts will give the agency deference in ...
  16. [16]
    Chevron U. S. A. Inc. v. Natural Resources Defense Council, Inc.
    Feb 29, 1984 · The Supreme Court held that the bubble regulation was a reasonable interpretation of the term “stationary source” in the Clean Air Act.
  17. [17]
    Chevron deference | Wex | US Law | LII / Legal Information Institute
    The doctrine originated with the Supreme Court's decision in Chevron U.S.A., Inc. v. Natural Resources Defense Council, Inc., 468 U.S. 837 (1984). In ...
  18. [18]
    Supreme Court Throws Out Chevron Decision, Weakening...
    Jun 30, 2024 · The US Supreme Court has overturned a 40-year-old precedent that directed courts to defer to federal agencies' interpretations of ambiguous laws.<|separator|>
  19. [19]
    [PDF] 22-451 Loper Bright Enterprises v. Raimondo (06/28/2024)
    Jun 28, 2024 · There are no special reasons, of the kind usually invoked for overturning precedent, to eliminate Chevron deference. And given Chevron's ...
  20. [20]
    After Chevron: What the Supreme Court's Loper Bright Decision ...
    Jul 11, 2024 · The decision withdrew Chevron deference to agencies' statutory interpretation, while leaving other, more traditional deference principles intact ...
  21. [21]
    Chevrons - Naval History and Heritage Command - Navy.mil
    May 13, 2014 · Chevron is a French word meaning rafter or roof, which is what a chevron looks like; two straight lines meeting at an angle just as rafters do in a roof.Missing: definition | Show results with:definition
  22. [22]
  23. [23]
    A Chronology of the Enlisted Rank Chevron
    Jul 30, 2013 · The purpose of this change was to increase the prestige of the Staff, Technical and Master Sergeant chevrons.Missing: definition | Show results with:definition
  24. [24]
    [PDF] A Chronology of the Air Force Enlisted Chevrons
    The approved chevron left the wreath and star in the lower portion of the chevron and in the middle added the U.S. American eagle insignia with two stars on ...
  25. [25]
    A Complete Guide to Heraldry
    FOX-DAVIES. 23 Old ... The term is derived from the French word chevron, meaning a rafter, and the heraldic chevron is the same shape as a gable rafter.
  26. [26]
    Chevrons, Piles, and other Pointy Bits - Heraldry at Poore House
    A chevron might be steeper if long, palewise charges appear around it (e.g. Or, a chevron throughout between three swords gules). It might be shallower if more ...
  27. [27]
    [PDF] A Guide to Blazonry - Royal Heraldry Society of Canada
    Blazon is the language of heraldry, used to describe a coat of arms in words so an artist can accurately depict it.
  28. [28]
    Chevron | Shield, Coat of Arms, Blazon - Britannica
    Sep 13, 2025 · Chevron, decorative motif consisting of two slanting lines forming an inverted V. From very early times, it has been a common motif in pottery and textiles.
  29. [29]
    Chevron: Definition and Design - Design Pool
    May 1, 2020 · Chevron patterns are characterized by columns of short diagonal stripes that meet in a line of Vs, not unlike the skeletons of fish.
  30. [30]
    Herringbone? Chevron? It's far more than a Zig-Zag pattern!
    Sep 9, 2022 · A Chevron is a modification of a Herringbone, though some might say a herringbone is a variation of a chevron, and that would be true too!
  31. [31]
  32. [32]
  33. [33]
  34. [34]
    Chevron & Herringbone: History of These Popular Parquet Wood ...
    Feb 1, 2020 · History of the Chevron Pattern. Now the chevron design has its own history beginning in Medieval heraldry, Ancient Greek pottery and textiles.
  35. [35]
    The Chevron's Role In Architecture And History - Knowledge
    Feb 20, 2024 · The chevron and herringbone patterns were first used as a design motif on wooden floors in the 16th century. In 1539, wood floors were laid in a ...
  36. [36]
  37. [37]
    The Chevron Pattern - a Popular Motif for Designers
    Jan 6, 2023 · Because of its ease of marking and application to material, the chevron has been used to denote ownership and rank since the Middle Ages, when ...
  38. [38]
    Chevron Is Back: A Modern Twist on a Classic Look - AKDO
    The chevron pattern has been used for thousands of years, with early examples found on ancient Greek pottery around 1800 B.C. and later by the Romans, who ...Missing: definition | Show results with:definition
  39. [39]
    NASA's Chevron Technology Has Quieted the Skies
    Mar 11, 2025 · The tests revealed the chevron nozzle had a negligible 0.25% reduction of thrust. It was a major development for jet noise research.
  40. [40]
    Jet noise reduction in chevrons nozzles from a wavepacket model ...
    Jan 3, 2025 · Chevron nozzle is one of the most effective methods for reducing the noise of subsonic jets, having been applied in commercial jet engines with proven noise ...
  41. [41]
    [PDF] Characterization of Chevron Nozzle Performance
    Several exhaust nozzle designs were shown to provide significant jet noise reductions and a <1 percent thrust coefficient reduction under cruise conditions.
  42. [42]
    Evolution from 'Tabs' to 'Chevron Technology' - A Review
    'Chevrons', a sawtooth pattern on the trailing edge of exhaust nozzles, are being implemented on modern jet engines. The technology reduces jet noise for ...
  43. [43]
    You didn't invent that! Aircraft Turbine Chevrons Edition - Nintil
    Dec 31, 2015 · The first chevrons were installed around 2003 in a GE CF34-8C5 engine mounted in a Bombardier CRJ900 aircraft, but they really gained traction ...
  44. [44]
    NASA Helps Create a More Silent Night
    Dec 13, 2010 · NASA partnered with industry many times during years of chevron testing, including these tests of nozzles on a specially-adapted GE engine ...
  45. [45]
    A history of jet noise research at the National Aeronautics and ...
    Aug 24, 2021 · This paper reviews jet noise research conducted at the National Aeronautics and Space Administration (NASA) from the early 1950s to the present day.
  46. [46]
    Impact of Using Chevrons Nozzle on the Acoustics and ... - MDPI
    Jun 2, 2021 · The noise reduction of the chevrons is obtained through a better mixture film between the jet gases and the air from the atmosphere. The FFT ...
  47. [47]
    [PDF] Acoustic analysis of chevron nozzle: A CFD approach
    For noise reduction in aircraft systems, CFD capabilities are essential. This study conducts Finite Element Method (FEM) analysis of the chevron nozzle.
  48. [48]
    [PDF] Jet noise reduction by chevrons : A review - IRJET
    Oct 4, 2022 · One effective technique for minimising jet noise is chevron which improves the mixing of fan ,core and ambient streams more quickly than ...<|separator|>
  49. [49]
    Analysis and Prediction of Noise from Installed Subsonic Chevron Jets
    Oct 16, 2025 · The use of chevrons reduces the low-frequency noise for isolated jets, but leads to even stronger noise amplification for installed jets; this ...
  50. [50]
    Experimental study of the noise suppression of supersonic ...
    May 15, 2024 · In this study, chevron nozzles are used to suppress the noise generation of supersonic impinging jets originated from a circular convergent nozzle.
  51. [51]
    Chevron patterns and defect lattices in an anisotropic model for ...
    Chevron patterns and defect lattices are unique patterns found in the electrohydrodynamic convection of nematic liquid crystals. We study numerically the ...<|separator|>
  52. [52]
    Pattern formation of chevrons in the conduction regime in ...
    We report on chevrons (herringbonelike patterns) observed in homeotropically aligned liquid crystals with high electric conductivity.
  53. [53]
    Molecular simulation of chevrons in confined smectic liquid crystals
    Aug 26, 2003 · The chevrons are formed by quenching nematic films confined between aligning planar substrates whose easy axes have opposing azimuthal ...
  54. [54]
    Physics - Explaining Chevron-Shaped Bands in Drying Colloids
    Aug 18, 2015 · Experiments explain why solidifying colloids sometimes form zigzagging stripes as they dry.
  55. [55]
    Collapse kinetics and chevron plots from simulations of denaturant ...
    Our work solves the long-standing problem of describing the entire denaturant-dependent folding of a protein, including the creation of the chevron plot, albeit ...
  56. [56]
    Collapse kinetics and chevron plots from simulations of denaturant ...
    Understanding how proteins fold in quantitative molecular detail can provide insights into protein aggregation and dynamics of formation of multisubunit ...
  57. [57]
    Chevron morphology in deformed semicrystalline polymers
    Chevron morphology was observed using transmission electron microscopy in various semicrystalline polymers deformed in tensile experiments.
  58. [58]
    On the chevron morphology of surface martensite - ScienceDirect.com
    Oct 15, 2019 · By analyzing the entire polished surface, we observe that almost all the martensite products have a highly symmetrical chevron morphology. This ...
  59. [59]
    Molecular characterization and information entropies of chevron-like ...
    Jul 1, 2025 · Chevron-like graphene nanoribbons (ChGNRs) are a class of nanomaterials with unique properties due to their wavy morphology. The electrical ...
  60. [60]
    Development of Chevron Folds | GSA Bulletin - GeoScienceWorld
    Jun 1, 2017 · The chevron model involves dilation at the hinge zones, and saddle reef formation, incompetent layer flow into the hinge, or slow hinge collapse ...
  61. [61]
    Features from the Field: Chevron Folds - EGU Blogs
    Jun 12, 2020 · They are characterized by straight limbs that abruptly bend on one point, at their hinge zone.
  62. [62]
    Chevrons: Origin and relevance for the reconstruction of past wind ...
    The term chevron has been employed in numerous studies to describe large U- and V-shaped ridges found in or near shorelines worldwide.
  63. [63]
    Chevron Map - Village - Stoumont, Wallonia, Belgium
    Chevron is a village in Stoumont, Arrondissement of Verviers, Wallonia and has about 763 residents. Chevron is situated nearby to the hamlet Les Forges, as well ...
  64. [64]
    Chevron North, Liège, Belgium - 19 Reviews, Map | AllTrails
    Rating 4.1 (19) Chevron North is a loop trail that covers 6.5 mi, with an elevation gain of 925 ft. It takes about 3–3.5 hr to complete. Loop trails have the same starting ...
  65. [65]
    Hiking in Wallonia | Chevron: the heights of Lienne
    At Rouge Thier, a stele commemorates the persecution of witches in the 16th century. All along the path, slate plaques tell the history and legend of this place ...
  66. [66]
    The Geological and Cultural Heritage of the Caledonian Stavelot ...
    Aug 6, 2025 · These localities can be used for the purposes of geotourism. This is the case of molybdenite localities from the Stavelot-Venn Massif in Belgium ...
  67. [67]
    A review of the geology and origin of CO2 in mineral water springs ...
    In this paper we therefore present a review of previous studies about the CO2-rich waters in east Belgium, with a focus on the region between Spa, Stoumont and ...
  68. [68]
    Bunkers Lienne 10 Chevron - Chevron (Stoumont) - TracesOfWar.com
    On the river Lienne near Chevron there are a number of bunkers defending the river and town. This is bunker Lienne 10. They belong to the defense line of ...
  69. [69]
    [PDF] Combat history of the 119th Infantry Regiment - Indiana Military Org.
    from Stoumont. Numerous infantry lounging around half- tracks were observed. These troops later proved to be the striking force of the First SS "Adolf ...
  70. [70]
    Chevron Island - Gold Coast Australia
    Chevron Island is a small neighbourhood sitting in the middle of Nerang River and provides access from Bundall to Surfers Paradise.
  71. [71]
    About Chevron Island - Queensland Sotheby's International Realty
    The Chevron Island is an urban island that lies in the Nerang River and is a neighbourhood within the suburb of Surfers Paradise in the City of Gold Coast, ...
  72. [72]
  73. [73]
    Chevron, KS, Scott City, KS 67871, US - MapQuest
    The neighborhood of Chevron is located in Scott County in the State of Kansas. Find directions to Chevron, browse local businesses, landmarks, get current ...
  74. [74]
    Current Time & Time Zone For Chevron, Kansas - Clock.Zone
    In the moment when this page was generated, in Chevron, Kansas it was Sunday, October 19, 2025 7:00 PM Abbreviation for this time zone is CDT .<|separator|>
  75. [75]
    Philip Chevron obituary | The Pogues - The Guardian
    Oct 9, 2013 · A veteran of the Irish band the Radiators from Space and folk-punks the Pogues, Philip Chevron, who has died of cancer aged 56, was a leading light in Dublin's ...
  76. [76]
    Pogues guitarist Philip Chevron dies at 56 - BBC News
    Oct 9, 2013 · Pogues guitarist Philip Chevron dies at 56. Published. 9 October 2013 ... Born Philip Ryan in Dublin, he formed punk band The Radiators ...
  77. [77]
    A conversation with Philip Chevron | Come Here To Me!
    Apr 11, 2012 · A conversation with Philip Chevron ... This year marks the 35th anniversary of The Radiators from Space's first single Television Screen. It'll ...
  78. [78]
    Philip Chevron - Apple Music
    Multi-instrumentalist and vocalist Philip Chevron combined the musical traditions of Ireland with the hard-edged attitude of punk rock.<|control11|><|separator|>
  79. [79]
    Chevron Surname Meaning & Chevron Family History at ... - Ancestry
    The Chevron family name was found in the USA, and Canada between 1880 and 1920. The most Chevron families were found in USA in 1880, and Canada in 1911. In 1880 ...
  80. [80]
    Chevron Surname Origin, Meaning & Last Name History - Forebears
    It is predominantly found in Europe, where 85 percent of Chevron live; 85 percent live in Western Europe and 84 percent live in Gallo-Europe.
  81. [81]
    10 French Punctuation Marks: Names & Typing Rules
    Oct 5, 2022 · In literary French, they are usually typed using this symbol: « » which is called “guillemets en chevron à la française” (source: wikipedia)…
  82. [82]
    mathematical left double angle bracket (u+27ea) - FileFormat.Info
    Unicode Character 'MATHEMATICAL LEFT DOUBLE ANGLE BRACKET' (U+27EA) ; Mirror, Y ; Index entries, ANGLE BRACKET, MATHEMATICAL LEFT DOUBLE bracket, left chevron
  83. [83]
    What Is a Chevron? - Computer Hope
    Jul 9, 2025 · A chevron is a symbol shaped like a proper or upside down "V," a greater than ">," or less than "<" symbol that usually indicates more.Missing: miscellaneous | Show results with:miscellaneous