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Anchor losses are a type of damping commonly highlighted in micro-resonators . They refer to the phenomenon where energy is dissipated as mechanical waves from the resonator attenuate into the substrate.
In physical systems , damping is the loss of energy of an oscillating system by dissipation . [ 1 ] In the field of... | https://en.wikipedia.org/wiki/Anchor_losses |
An anchor plate , floor plate [ 1 ] or wall washer is a large plate or washer connected to a tie rod or bolt . Anchor plates are used on exterior walls of masonry buildings, for structural reinforcement against lateral bowing. Anchor plates are made of cast iron , sometimes wrought iron or steel , and are often made in... | https://en.wikipedia.org/wiki/Anchor_plate |
Reinforced concrete is concrete in which reinforcement bars (" rebars "), reinforcement grids, plates or fibers are embedded to create bond and thus to strengthen the concrete in tension . The composite material was invented by French gardener Joseph Monier in 1849 and patented in 1867. [ 1 ]
Conventionally the term c... | https://en.wikipedia.org/wiki/Anchorage_in_reinforced_concrete |
The anchoring effect is a psychological phenomenon in which an individual's judgments or decisions are influenced by a reference point or "anchor" which can be completely irrelevant. Both numeric and non-numeric anchoring have been reported through research. In numeric anchoring, once the value of the anchor is set, su... | https://en.wikipedia.org/wiki/Anchoring_effect |
Ancient DNA ( aDNA ) is DNA isolated from ancient sources (typically specimens , but also environmental DNA ). [ 1 ] [ 2 ] Due to degradation processes (including cross-linking , deamination and fragmentation ) [ 3 ] ancient DNA is more degraded in comparison with present-day genetic material. [ 4 ] Genetic material ha... | https://en.wikipedia.org/wiki/Ancient_DNA |
Ancient proteins are complex mixtures and the term palaeoproteomics is used to characterise the study of proteomes in the past. [ 1 ] Ancients proteins have been recovered from a wide range of archaeological materials, including bones , [ 2 ] teeth , [ 3 ] eggshells , [ 4 ] leathers , [ 5 ] parchments , [ 6 ] ceramics ... | https://en.wikipedia.org/wiki/Ancient_protein |
In mathematics, an ancient solution to a differential equation is a solution that can be extrapolated backwards to all past times, without singularities. That is, it is a solution "that is defined on a time interval of the form (−∞, T ) ." [ 1 ]
The term was introduced by Richard Hamilton in his work on the Ricci flow... | https://en.wikipedia.org/wiki/Ancient_solution |
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Ancyronyx , commonly known as spider water beetles or spider riffle beetles , is a genus of aquatic riffle beetles from North America, South Asia, China, and Southeast Asia. They are small beetles with extremely long legs ending in strong claws. Both the adults and the larvae are found underwater in the shall... | https://en.wikipedia.org/wiki/Ancyronyx |
" And yet it moves " or " Although it does move " ( Italian : E pur si muove or Eppur si muove [epˈpur si ˈmwɔːve] ) is a phrase attributed to the Italian mathematician, physicist, and philosopher Galileo Galilei (1564–1642) in 1633 after being forced to recant his claims that the Earth moves around the Sun , rather th... | https://en.wikipedia.org/wiki/And_yet_it_moves |
Anders Johan Lexell (24 December 1740 – 11 December [ O.S. 30 November] 1784) was a Finnish-Swedish astronomer , mathematician , and physicist who spent most of his life in Imperial Russia , where he was known as Andrei Ivanovich Leksel (Андрей Иванович Лексель).
Lexell made important discoveries in polygonometry and ... | https://en.wikipedia.org/wiki/Anders_Johan_Lexell |
Anders Meibom (born 9 September 1969) is a Danish interdisciplinary scientist and former football player [ 1 ] active in the field of bio-geochemistry. He is a professor at the École Polytechnique Fédérale de Lausanne (EPFL), where he heads the laboratory for biological geochemistry . [ 2 ]
Meibom obtained a PhD in ph... | https://en.wikipedia.org/wiki/Anders_Meibom |
The Andersen thermostat is a proposal in molecular dynamics simulation for maintaining constant temperature conditions. [ 1 ] [ 2 ] It is based on periodic reassignment of the velocities of atoms or molecules . For each atom or molecule, the reassigned velocity is picked randomly according to Maxwell–Boltzmann statisti... | https://en.wikipedia.org/wiki/Andersen_thermostat |
In electronics , Anderson's bridge is a bridge circuit used to measure the self-inductance of the coil. It enables measurement of inductance by utilizing other circuit components like resistors and capacitors. [ 1 ]
Anderson's bridge was invented by Alexander Anderson in 1891. [ 2 ] He modified Maxwell's inductance c... | https://en.wikipedia.org/wiki/Anderson's_bridge |
In mathematics , Anderson's theorem is a result in real analysis and geometry which says that the integral of an integrable, symmetric, unimodal, non-negative function f over an n -dimensional convex body K does not decrease if K is translated inwards towards the origin. This is a natural statement, since the graph of ... | https://en.wikipedia.org/wiki/Anderson's_theorem |
In the field of superconductivity, Anderson's theorem states that superconductivity in a conventional superconductor is robust with respect to (non-magnetic) disorder in the host material. It is named after P. W. Anderson , who discussed this phenomenon in 1959, briefly after BCS theory was introduced. [ 1 ]
One conse... | https://en.wikipedia.org/wiki/Anderson's_theorem_(superconductivity) |
The Anderson impurity model , named after Philip Warren Anderson , is a Hamiltonian that is used to describe magnetic impurities embedded in metals . [ 1 ] It is often applied to the description of Kondo effect -type problems, [ 2 ] such as heavy fermion systems [ 3 ] and Kondo insulators [ citation needed ] . In its s... | https://en.wikipedia.org/wiki/Anderson_impurity_model |
The Anderson orthogonality theorem is a theorem in physics by the physicist P. W. Anderson .
It relates to the introduction of a magnetic impurity in a metal. When a magnetic impurity is introduced into a metal, the conduction electrons will tend to screen the potential V ( r ) {\displaystyle V(r)} that the impurity c... | https://en.wikipedia.org/wiki/Anderson_orthogonality_theorem |
In mathematics , in the areas of topology and functional analysis , the Anderson–Kadec theorem states [ 1 ] that any two infinite-dimensional , separable Banach spaces , or, more generally, Fréchet spaces , are homeomorphic as topological spaces. The theorem was proved by Mikhail Kadec (1966) and Richard Davis Anderson... | https://en.wikipedia.org/wiki/Anderson–Kadec_theorem |
The Anderton Shearer Loader is a coal cutting machine which was used in the UK coal industry after 1953. The Anderton Power Loader with its cutting drum up to five feet in diameter was patented in 1953. It was successfully used throughout the British coalfields and by 1966 cut half the coal produced and by 1977 it prod... | https://en.wikipedia.org/wiki/Anderton_Shearer_Loader |
In manufacturing , andon ( Japanese : アンドン or あんどん or 行灯 ) is a system which notifies managerial, maintenance, and other workers of a quality or process problem. The alert can be activated manually by a worker using a pullcord or button or may be activated automatically by the production equipment itself. The system ma... | https://en.wikipedia.org/wiki/Andon_(manufacturing) |
Andrea Goldsmith FREng [ 1 ] is an American electrical engineer and the dean of the School of Engineering and Applied Science at Princeton University . [ 2 ] [ 3 ] [ 4 ] She is also the Arthur LeGrand Doty Professor of Electrical Engineering at Princeton. In February 2025, Goldsmith was announced as the president elect... | https://en.wikipedia.org/wiki/Andrea_Goldsmith_(engineer) |
Andrea Maria Hodge is a Colombian-born materials scientist and academic leader. She is the Department Chair of the Mork Family Department of Chemical Engineering & Materials Science at University of Southern California , and the Arthur B. Freeman Professor and Professor of Chemical Engineering and Materials Science and... | https://en.wikipedia.org/wiki/Andrea_Hodge |
Andrea Morello (born 26 June 1972, in Pinerolo, Italy) is the Scientia Professor of Quantum Engineering in the School of Electrical Engineering and Telecommunications at the University of New South Wales , and a Program Manager at the ARC Centre of Excellence for Quantum Computation and Communication Technology (CQC2T)... | https://en.wikipedia.org/wiki/Andrea_Morello |
Andreas Lüttge is Professor of Earth Science and Professor of Chemistry at Rice University in Houston, Texas (USA). He was also director of the National Corrosion Center (NCC) until 2010. [ 1 ] The primary concerns of his research are surface chemical processes at minerals and rocks from low-temperature conditions up t... | https://en.wikipedia.org/wiki/Andreas_Luttge |
Andreev reflection , named after the Russian physicist Alexander F. Andreev , is a type of particle scattering which occurs at interfaces between a superconductor (S) and a normal state material (N). It is a charge-transfer process by which normal current in N is converted to supercurrent in S. Each Andreev reflection... | https://en.wikipedia.org/wiki/Andreev_reflection |
Andrei Nikolaevich Khlobystov ( Russian : Андрей Николаевич Хлобыстов ) is a Russian-British scientist who is the Professor of Nanomaterials at the University of Nottingham . He serves as Director for Research for the School of Chemistry in the Faculty of Science and has received several awards during his career, inclu... | https://en.wikipedia.org/wiki/Andrei_Khlobystov |
Andrei Vladimirovich Roiter ( Russian : Андрей Владимирович Ройтер; Ukrainian : Андрій Володимирович Ройтер, November 30, 1937, Dnipro – July 26, 2006, Riga , Latvia) was a Ukrainian mathematician, specializing in algebra. [ 1 ]
A. V. Roiter's father was the Ukrainian physical chemist V. A. Roiter, a leading expert on... | https://en.wikipedia.org/wiki/Andrei_Roiter |
In mathematics , the Andreotti–Vesentini separation theorem , introduced by Aldo Andreotti and Edoardo Vesentini ( 1965 , 1965b ) states that certain cohomology groups of coherent sheaves are separated.
This topology-related article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Andreotti–Vesentini_theorem |
Andrew Bruce Bocarsly (born April 23, 1954) is currently a professor at Princeton University , New Jersey . His primary research interests lie in physical inorganic chemistry. [ 1 ] He conducts research in electrochemistry , photochemistry, solids state chemistry, and fuel cells, and is known for his work on alternate ... | https://en.wikipedia.org/wiki/Andrew_B._Bocarsly |
Andrew B. Raupp (born in Detroit, Michigan ) is an American entrepreneur, educator, and leading advocate for science, technology, engineering, and mathematics ( STEM ) education. He is the founder and executive director of STEM.org Educational Research , a pioneering organization at the forefront of STEM research and q... | https://en.wikipedia.org/wiki/Andrew_B._Raupp |
Andrew Bruce Holmes AC FRS FAA FInstP (born 5 September 1943) is an Australian and British senior research chemist and professor at the Bio21 Institute , Melbourne , Australia, and the past President of the Australian Academy of Science . His research interests lie in the synthesis of biologically-active natural produc... | https://en.wikipedia.org/wiki/Andrew_Bruce_Holmes |
Andrew L. Goodwin FRS is a university research professor and professor of materials chemistry at the University of Oxford .
Goodwin was educated at Sydney Boys High School and represented Australia at the International Chemistry Olympiad in 1996, winning a gold medal . [ 1 ] [ 2 ]
Goodwin earned a BSc in chemistry an... | https://en.wikipedia.org/wiki/Andrew_Goodwin_(chemist) |
In data visualization , an Andrews plot or Andrews curve is a way to visualize structure in high-dimensional data. It is basically a rolled-down, non-integer version of the Kent–Kiviat radar m chart , or a smoothed version of a parallel coordinate plot . It is named after the statistician David F. Andrews. [ 1 ] [ 2 ] ... | https://en.wikipedia.org/wiki/Andrews_plot |
In mathematics, the Andrews–Curtis conjecture states that every balanced presentation (i.e. a presentation with the same number of generators and relations) of the trivial group can be transformed into a trivial presentation by a sequence of Nielsen transformations on the relators together with conjugations of relators... | https://en.wikipedia.org/wiki/Andrews–Curtis_conjecture |
Androdioecy / ˌ æ n d r oʊ d aɪ ˈ iː s i / is a reproductive system characterized by the coexistence of males and hermaphrodites . Androdioecy is rare in comparison with the other major reproductive systems: dioecy , gynodioecy and hermaphroditism . [ 1 ] In animals, androdioecy has been considered a stepping stone in ... | https://en.wikipedia.org/wiki/Androdioecy |
An androgen conjugate is a conjugate of an androgen , such as testosterone . [ 1 ] [ 2 ] They occur naturally in the body as metabolites of androgens. [ 1 ] Androgen conjugates include sulfate esters and glucuronide conjugates and are formed by sulfotransferase and glucuronosyltransferase enzymes , respectively. [ 1 ] ... | https://en.wikipedia.org/wiki/Androgen_conjugate |
An android is a humanoid robot or other artificial being, often made from a flesh-like material. [ 1 ] [ 2 ] [ 3 ] [ 4 ] Historically, androids existed only in the domain of science fiction and were frequently seen in film and television, but advances in robot technology have allowed the design of functional and realis... | https://en.wikipedia.org/wiki/Android_(robot) |
Android Cloud to Device Messaging (commonly referred to as Cloud to Device Messaging ), or C2DM , is a defunct mobile notification service that was developed by Google and replaced by the Google Cloud Messaging service. It enabled developers to send data from servers to Android applications and Chrome extensions. C2DM ... | https://en.wikipedia.org/wiki/Android_Cloud_to_Device_Messaging |
The Andromeda–Milky Way collision is a galactic collision predicted to occur in about 4.5 billion years between the two largest galaxies in the Local Group —the Milky Way (which contains the Solar System and Earth ) and the Andromeda Galaxy . [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ]
The stars involved are sufficiently spaced tha... | https://en.wikipedia.org/wiki/Andromeda–Milky_Way_collision |
The Andronov–Pontryagin criterion is a necessary and sufficient condition for the stability of dynamical systems in the plane. It was derived by Aleksandr Andronov and Lev Pontryagin in 1937.
A dynamical system
where v {\displaystyle v} is a C 1 {\displaystyle C^{1}} - vector field on the plane , x ∈ R 2 {\displaysty... | https://en.wikipedia.org/wiki/Andronov–Pontryagin_criterion |
Androstanedione , also known as 5α-androstanedione or as 5α-androstane-3,17-dione , is a naturally occurring androstane (5α-androstane) steroid and an endogenous metabolite of androgens like testosterone , dihydrotestosterone (DHT), dehydroepiandrosterone (DHEA), and androstenedione . [ 1 ] It is the C5 epimer of etioc... | https://en.wikipedia.org/wiki/Androstanedione |
Androstenediol sulfate , also known as androst-5-ene-3β,17β-diol 3β-sulfate , is an endogenous , naturally occurring steroid and a urinary metabolites of androstenediol . [ 1 ] It is a steroid sulfate which is formed from sulfation of androstenediol by steroid sulfotransferase and can be desulfated back into androstene... | https://en.wikipedia.org/wiki/Androstenediol_sulfate |
Androsterone sulfate , also known as 3α-hydroxy-5α-androstan-17-one 3α-sulfate , is an endogenous , naturally occurring steroid and one of the major urinary metabolites of androgens . [ 1 ] [ 2 ] It is a steroid sulfate which is formed from sulfation of androsterone by the steroid sulfotransferase SULT2A1 and can be de... | https://en.wikipedia.org/wiki/Androsterone_sulfate |
Dissection (from Latin dissecare "to cut to pieces"; also called anatomization ) is the dismembering of the body of a deceased animal or plant to study its anatomical structure. Autopsy is used in pathology and forensic medicine to determine the cause of death in humans. Less extensive dissection of plants and smaller ... | https://en.wikipedia.org/wiki/Androtomy |
The Andrussow process is the dominant industrial process for the production of hydrogen cyanide . [ 1 ] It involves the reaction of methane , ammonia , and oxygen . The process is catalyzed by a platinum - rhodium alloy. [ 2 ]
Hydrogen cyanide is highly valued for the production or acrylonitrile and adiponitrile , as ... | https://en.wikipedia.org/wiki/Andrussow_process |
András P Huhn ( Szeged , 26 January 1947 – Szeged , 6 June 1985) was a Hungarian mathematician. Huhn's theorem on the representation of distributive semilattices is named after him. | https://en.wikipedia.org/wiki/András_P._Huhn |
André Lalande (19 July, 1867 Dijon – 15 November, 1964 Asnières ) was a French philosopher . In 1904, he was appointed Professor of philosophy at the University of Paris . [ 1 ]
Whilst still at school in 1883-4 he was taught by Émile Durkheim , whom he greatly appreciated. His notes have provided the basis for the pub... | https://en.wikipedia.org/wiki/André_Lalande_(philosopher) |
The Aneesur Rahman Prize for Computational Physics is a prize that has been awarded annually by the American Physical Society since 1993. [ 1 ] The recipient is chosen for "outstanding achievement in computational physics research" and it is the highest award given by the APS for work in computational physics. [ 2 ] Th... | https://en.wikipedia.org/wiki/Aneesur_Rahman_Prize |
The anemic domain model is described as a programming anti-pattern where the domain objects contain little or no business logic like validations, calculations, rules, and so forth. The business logic is thus baked into the architecture of the program itself, making refactoring and maintenance more difficult and time-co... | https://en.wikipedia.org/wiki/Anemic_domain_model |
Anesthesia ( American English ) or anaesthesia ( British English ) is a state of controlled, temporary loss of sensation or awareness that is induced for medical or veterinary purposes. It may include some or all of analgesia (relief from or prevention of pain ), paralysis (muscle relaxation), amnesia (loss of memory),... | https://en.wikipedia.org/wiki/Anesthesia |
Anfinsen's dogma , also known as the thermodynamic hypothesis , is a postulate in molecular biology . It states that, at least for a small globular protein in its standard physiological environment, the native structure is determined only by the protein's amino acid sequence . [ 1 ] The dogma was championed by the Nobe... | https://en.wikipedia.org/wiki/Anfinsen's_dogma |
Angel_F is a fictional child artificial intelligence that has been used in art performances worldwide focused on the issues of digital liberties, intellectual property and on the evolution of language and behaviour in information society. The character was created by Salvatore Iaconesi in 2007 as a hack to the Biodoll ... | https://en.wikipedia.org/wiki/Angel_F |
Angela Casini is a medicinal and inorganic chemist who works on metal-based compounds as therapeutic agents. She was awarded the 2012 European Medal for Bio-Inorganic Chemistry and made the 2019 American Chemical Society Inorganic Lecturer.
[ 1 ] She earned her PhD in chemical sciences at the University of Florence in... | https://en.wikipedia.org/wiki/Angela_Casini |
In mathematics , the Angelescu polynomials π n ( x ) are a series of polynomials generalizing the Laguerre polynomials introduced by Aurel Angelescu. The polynomials can be given by the generating function ϕ ( t 1 − t ) exp ( − x t 1 − t ) = ∑ n = 0 ∞ π n ( x ) t n . {\displaystyle \phi \left({\frac {t}{1-t}}\right)\... | https://en.wikipedia.org/wiki/Angelescu_polynomials |
Angelica M. Stacy is the associate vice provost for the faculty, and professor of chemistry, at University of California, Berkeley . [ 1 ] [ 2 ] Stacy was one of the first women to receive tenure in the college of chemistry at UC Berkeley .
At UC Berkeley, Stacy leads a research group that explores topics in materials... | https://en.wikipedia.org/wiki/Angelica_Stacy |
Chloe Angeline Stickney Hall (November 1, 1830 – July 3, 1892) was an American mathematician and suffragist . She was married to astronomer Asaph Hall and collaborated with her husband in searching for the moons of Mars , performing mathematical calculations on the data he collected.
Angeline Stickney was born to Theo... | https://en.wikipedia.org/wiki/Angeline_Stickney |
The Angeli–Rimini reaction is an organic reaction between an aldehyde and N-hydroxybenzenesulfonamide in presence of base forming a hydroxamic acid .
The other reaction product is a sulfinic acid . The reaction was discovered by the two Italian chemists Angelo Angeli and Enrico Rimini (1874–1917), and was published in... | https://en.wikipedia.org/wiki/Angeli–Rimini_reaction |
Angelo Azzi is an Italian and Swiss biochemist, author and academic serving as a Professor Emeritus in the Institute of Biochemistry and Molecular Medicine at the University of Bern and Adjunct Faculty Member at Tufts University . [ 1 ] [ 2 ]
Azzi's work focuses on the biochemistry of enzymes , gene regulation , and m... | https://en.wikipedia.org/wiki/Angelo_Azzi |
Angewandte Chemie ( German pronunciation: [ˈaŋɡəˌvantə çeˈmiː] , meaning "Applied Chemistry") is a weekly peer-reviewed scientific journal that is published by Wiley-VCH on behalf of the German Chemical Society (Gesellschaft Deutscher Chemiker). Publishing formats include feature-length reviews , short highlights, rese... | https://en.wikipedia.org/wiki/Angewandte_Chemie |
Angiogenesis is the physiological process through which new blood vessels form from pre-existing vessels, [ 1 ] [ 2 ] [ 3 ] formed in the earlier stage of vasculogenesis . Angiogenesis continues the growth of the vasculature mainly by processes of sprouting and splitting, but processes such as coalescent angiogenesis ,... | https://en.wikipedia.org/wiki/Angiogenesis |
1A4Y , 1ANG , 1AWZ , 1B1E , 1B1I , 1B1J , 1GV7 , 1H0D , 1H52 , 1H53 , 1HBY , 1K58 , 1K59 , 1K5A , 1K5B , 1UN3 , 1UN4 , 1UN5 , 2ANG , 4AHD , 4AHE , 4AHF , 4AHG , 4AHH , 4AHI , 4AHJ , 4AHK , 4AHL , 4AHM , 4AHN , 4AOH , 4B36
283
11727
ENSG00000214274
ENSMUSG00000072115
P03950
P21570
NM_001145 NM_001097577
NM_00116... | https://en.wikipedia.org/wiki/Angiogenin |
Angiopoietin is part of a family of vascular growth factors that play a role in embryonic and postnatal angiogenesis . Angiopoietin signaling most directly corresponds with angiogenesis, the process by which new arteries and veins form from preexisting blood vessels. Angiogenesis proceeds through sprouting, endothelial... | https://en.wikipedia.org/wiki/Angiopoietin |
In Euclidean geometry , an angle or plane angle is the figure formed by two rays , called the sides of the angle, sharing a common endpoint, called the vertex of the angle. [ 1 ] Two intersecting curves may also define an angle, which is the angle of the rays lying tangent to the respective curves at their point of int... | https://en.wikipedia.org/wiki/Angle |
Angle-resolved low-coherence interferometry ( a/LCI ) is an emerging [ when? ] biomedical imaging technology which uses the properties of scattered light to measure the average size of cell structures, including cell nuclei . The technology shows promise as a clinical tool for in situ detection of dysplastic , or preca... | https://en.wikipedia.org/wiki/Angle-resolved_low-coherence_interferometry |
Angle-resolved photoemission spectroscopy ( ARPES ) is an experimental technique used in condensed matter physics to probe the allowed energies and momenta of the electrons in a material, usually a crystalline solid . It is based on the photoelectric effect , in which an incoming photon of sufficient energy ejects an e... | https://en.wikipedia.org/wiki/Angle-resolved_photoemission_spectroscopy |
In geometry , the angle bisector theorem is concerned with the relative lengths of the two segments that a triangle 's side is divided into by a line that bisects the opposite angle . It equates their relative lengths to the relative lengths of the other two sides of the triangle.
Consider a triangle △ ABC . Let the a... | https://en.wikipedia.org/wiki/Angle_bisector_theorem |
The angle of arrival ( AoA ) of a signal is the direction from which the signal (e.g. radio, optical or acoustic) is received. [ 1 ]
Measurement of AoA can be done by determining the direction of propagation of a radio-frequency wave incident on an antenna array or determined from maximum signal strength during antenn... | https://en.wikipedia.org/wiki/Angle_of_arrival |
On fixed-wing aircraft , the angle of incidence (sometimes referred to as the mounting angle [ 1 ] or setting angle ) is the angle between the chord line of the wing where the wing is mounted to the fuselage, and a reference axis along the fuselage (often the direction of minimum drag, or where applicable, the longitud... | https://en.wikipedia.org/wiki/Angle_of_incidence_(aerodynamics) |
The angle of incidence , in geometric optics , is the angle between a ray incident on a surface and the line perpendicular (at 90 degree angle) to the surface at the point of incidence, called the normal . The ray can be formed by any waves, such as optical , acoustic , microwave , and X-ray . In the figure below, the ... | https://en.wikipedia.org/wiki/Angle_of_incidence_(optics) |
The angle of list is the degree to which a vessel heels (leans or tilts) to either port or starboard at equilibrium—with no external forces acting upon it. [ 1 ] If a listing ship goes beyond the point where a righting moment will keep it afloat, it will capsize and potentially sink. [ 2 ]
Listing is caused by the off... | https://en.wikipedia.org/wiki/Angle_of_list |
Angle of loll is the state of a ship that is unstable when upright (i.e. has a negative metacentric height ) and therefore takes on an angle of heel to either port or starboard .
When a vessel has negative metacentric height (GM) i.e. , is in unstable equilibrium, any external force applied to the vessel will cause it... | https://en.wikipedia.org/wiki/Angle_of_loll |
In hyperbolic geometry , angle of parallelism Π ( a ) {\displaystyle \Pi (a)} is the angle at the non-right angle vertex of a right hyperbolic triangle having two asymptotic parallel sides. The angle depends on the segment length a between the right angle and the vertex of the angle of parallelism.
Given a point not o... | https://en.wikipedia.org/wiki/Angle_of_parallelism |
The angle of repose , or critical angle of repose , [ 1 ] of a granular material is the steepest angle of descent or dip relative to the horizontal plane on which the material can be piled without slumping. At this angle, the material on the slope face is on the verge of sliding. The angle of repose can range from 0° t... | https://en.wikipedia.org/wiki/Angle_of_repose |
In photography , angle of view ( AOV ) [ 1 ] describes the angular extent of a given scene that is imaged by a camera . It is used interchangeably with the more general term field of view .
It is important to distinguish the angle of view from the angle of coverage , which describes the angle range that a lens can ima... | https://en.wikipedia.org/wiki/Angle_of_view_(photography) |
Angle trisection is a classical problem of straightedge and compass construction of ancient Greek mathematics . It concerns construction of an angle equal to one third of a given arbitrary angle, using only two tools: an unmarked straightedge and a compass .
In 1837, Pierre Wantzel proved that the problem, as stated, ... | https://en.wikipedia.org/wiki/Angle_trisection |
Crithidia deanei Carvalho, 1973
Angomonas deanei is a flagellated trypanosomatid protozoan . As an obligate parasite , it infects the gastrointestinal tract of insects , and is in turn a host to symbiotic bacteria. The bacterial endosymbiont Ca. " Kinetoplastibacterium crithidii " maintains a permanent mutualistic rel... | https://en.wikipedia.org/wiki/Angomonas_deanei |
Angular Correlation of Electron Positron Annihilation Radiation (ACAR or ACPAR) is a technique of solid state physics to investigate the electronic structure of metals. It uses positrons which are implanted into a sample and annihilate with the electrons. In the majority of annihilation events, two gamma quanta are cr... | https://en.wikipedia.org/wiki/Angular_Correlation_of_Electron_Positron_Annihilation_Radiation |
The angular aperture a {\displaystyle a} of a lens is the angular size of the lens aperture as seen from the focal point :
where
In a medium with an index of refraction close to 1, such as air, the angular aperture is approximately equal to twice the numerical aperture of the lens. [ 1 ]
Formally, the numerical aper... | https://en.wikipedia.org/wiki/Angular_aperture |
The angular diameter , angular size , apparent diameter , or apparent size is an angular separation (in units of angle ) describing how large a sphere or circle appears from a given point of view. In the vision sciences , it is called the visual angle , and in optics , it is the angular aperture (of a lens ). The angul... | https://en.wikipedia.org/wiki/Angular_diameter |
In astronomy , angular diameter distance is a distance (in units of length ) defined in terms of an object's physical size (also in units of length), x {\displaystyle x} , and its angular size (necessarily in radians ), θ {\displaystyle \theta } , as viewed from Earth: d A = x θ {\displaystyle d_{A}={\frac {x}{\theta }... | https://en.wikipedia.org/wiki/Angular_diameter_distance |
The angular displacement (symbol θ, ϑ, or φ) – also called angle of rotation , rotational displacement , or rotary displacement – of a physical body is the angle (in units of radians , degrees , turns , etc.) through which the body rotates (revolves or spins) around a centre or axis of rotation . Angular displacement m... | https://en.wikipedia.org/wiki/Angular_displacement |
Angular distance or angular separation is the measure of the angle between the orientation of two straight lines , rays , or vectors in three-dimensional space , or the central angle subtended by the radii through two points on a sphere . When the rays are lines of sight from an observer to two points in space, it is k... | https://en.wikipedia.org/wiki/Angular_distance |
In physics , angular frequency (symbol ω ), also called angular speed and angular rate , is a scalar measure of the angle rate (the angle per unit time) or the temporal rate of change of the phase argument of a sinusoidal waveform or sine function (for example, in oscillations and waves).
Angular frequency (or angular ... | https://en.wikipedia.org/wiki/Angular_frequency |
In mathematics and statistics , a circular mean or angular mean is a mean designed for angles and similar cyclic quantities, such as times of day , and fractional parts of real numbers .
This is necessary since most of the usual means may not be appropriate on angle-like quantities. For example, the arithmetic mean of... | https://en.wikipedia.org/wiki/Angular_mean |
In physics, angular mechanics is a field of mechanics which studies rotational movement. It studies things such as angular momentum , angular velocity , and torque . It also studies more advanced things such as Coriolis force [ 1 ] and Angular aerodynamics . It is used in many fields such as toy making, aerospace engin... | https://en.wikipedia.org/wiki/Angular_mechanics |
In quantum mechanics and its applications to quantum many-particle systems , notably quantum chemistry , angular momentum diagrams , or more accurately from a mathematical viewpoint angular momentum graphs , are a diagrammatic method for representing angular momentum quantum states of a quantum system allowing calculat... | https://en.wikipedia.org/wiki/Angular_momentum_diagrams_(quantum_mechanics) |
The angular momentum problem is a problem in astrophysics identified by Leon Mestel in 1965. [ 1 ]
It was found that the angular momentum of a protoplanetary disk is misappropriated when compared to models during stellar birth. The Sun and other stars are predicted by models to be rotating considerably faster than the... | https://en.wikipedia.org/wiki/Angular_momentum_problem |
Angular resolution describes the ability of any image-forming device such as an optical or radio telescope , a microscope , a camera , or an eye , to distinguish small details of an object, thereby making it a major determinant of image resolution . It is used in optics applied to light waves, in antenna theory applie... | https://en.wikipedia.org/wiki/Angular_resolution |
In Euclidean geometry , an angle or plane angle is the figure formed by two rays , called the sides of the angle, sharing a common endpoint, called the vertex of the angle. [ 1 ] Two intersecting curves may also define an angle, which is the angle of the rays lying tangent to the respective curves at their point of int... | https://en.wikipedia.org/wiki/Angular_unit |
In physics , angular velocity (symbol ω or ω → {\displaystyle {\vec {\omega }}} , the lowercase Greek letter omega ), also known as the angular frequency vector , [ 1 ] is a pseudovector representation of how the angular position or orientation of an object changes with time, i.e. how quickly an object rotates (spins o... | https://en.wikipedia.org/wiki/Angular_velocity |
The angular velocity tensor is a skew-symmetric matrix defined by:
The scalar elements above correspond to the angular velocity vector components ω = ( ω x , ω y , ω z ) {\displaystyle {\boldsymbol {\omega }}=(\omega _{x},\omega _{y},\omega _{z})} .
This is an infinitesimal rotation matrix .
The linear mapping Ω acts... | https://en.wikipedia.org/wiki/Angular_velocity_tensor |
Angus J. Wilkinson is a professor of materials science based at the Department of Materials, University of Oxford . He is a specialist in micromechanics of materials and electron microscopy . [ 1 ]
Wilkinson is from Spexhall , Suffolk . He obtained a bachelor's degree in chemical physics and PhD in engineering from th... | https://en.wikipedia.org/wiki/Angus_J._Wilkinson |
The angzarr ( ⍼ ) is an obscure typographical symbol representing azimuth , [ 1 ] [ 2 ] dating back to at least the mid 20th century, which became notorious during the first half of the 2020s for its obscurity and lack of a widely recognised meaning (compare ghost characters ).
The name is from an abbreviation of its ... | https://en.wikipedia.org/wiki/Angzarr |
In classical mechanics , anharmonicity is the deviation of a system from being a harmonic oscillator . An oscillator that is not oscillating in harmonic motion is known as an anharmonic oscillator where the system can be approximated to a harmonic oscillator and the anharmonicity can be calculated using perturbation th... | https://en.wikipedia.org/wiki/Anharmonicity |
The anhydroglucose unit (AGU) refers to a single sugar molecule in a polymer. Each AGU is reduced to its functional groups, 3 hydroxyl groups per AGU.
Carbohydrate AGU:
Cellulose AGU: | https://en.wikipedia.org/wiki/Anhydroglucose_unit |
A substance is anhydrous if it contains no water . Many processes in chemistry can be impeded by the presence of water; therefore, it is important that water-free reagents and techniques are used. In practice, however, it is very difficult to achieve perfect dryness; anhydrous compounds gradually absorb water from the ... | https://en.wikipedia.org/wiki/Anhydrous |
Anidex is one of the elastomeric synthetic fibers . It is made from an artificial linear polymer consisting of at least 50% by mass of one or more monohydric alcohol esters .
Rohm and Haas developed Anidex in 1969. The company could not produce it commercially because of lacking differences in properties to become an ... | https://en.wikipedia.org/wiki/Anidex |
Anil Potti is a physician and former Duke University associate professor and cancer researcher, focusing on oncogenomics . He, along with Joseph Nevins, are at the center of a research fabrication scandal at Duke University . [ 1 ] [ 2 ] [ 3 ] On 9 November 2015, the Office of Research Integrity (ORI) found that Potti ... | https://en.wikipedia.org/wiki/Anil_Potti |
In organic chemistry , anilides (or phenylamides ) are a class of organic compounds with the general structure R−C(=O)−N(−R’)− C 6 H 5 . They are amide derivatives of aniline ( H 2 N−C 6 H 5 ).
Aniline reacts with acyl chlorides or carboxylic anhydrides to give anilides. For example, reaction of aniline with acetyl c... | https://en.wikipedia.org/wiki/Anilide |
This page provides supplementary chemical data on aniline .
The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet ( MSDS ) for this chemical from a reliable source and follow its directions.
Table data obtained from CRC Handbook of Chemi... | https://en.wikipedia.org/wiki/Aniline_(data_page) |
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