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id int64 39 79M	url stringlengths 32 168	text stringlengths 7 145k	source stringlengths 2 105	categories listlengths 1 6	token_count int64 3 32.2k	subcategories listlengths 0 27
12,757,598	https://en.wikipedia.org/wiki/Altai%20falcon	The Altai falcon has been identified as a color morph of the Central Asian saker falcon (Falco cherrug milvipes), as per the latest genetic research (Zinevich et al. 2023). Previously, it was variously classified as a morph, a subspecies (Falco cherrug altaicus), and even separate species (Falco altaicus). It used to h...	Altai falcon	[ "Biology" ]	811	[ "Biological hypotheses", "Controversial bird taxa", "Controversial taxa" ]
12,759,394	https://en.wikipedia.org/wiki/Lung%20counter	A lung counter is a system consisting of a radiation detector, or detectors, and associated electronics that is used to measure radiation emitted from radioactive material that has been inhaled by a person and is sufficiently insoluble as to remain in the lung for weeks, months, or years. They are frequently used in oc...	Lung counter	[ "Chemistry", "Biology" ]	245	[ "Radiobiology", "Medical equipment", "Radioactivity", "Medical technology" ]
12,760,610	https://en.wikipedia.org/wiki/RuBee	RuBee (IEEE standard 1902.1) is a two-way active wireless protocol designed for harsh environments and high-security asset visibility applications. RuBee utilizes longwave signals to send and receive short (128 byte) data packets in a local regional network. The protocol is similar to the IEEE 802 protocols in that RuB...	RuBee	[ "Engineering" ]	1,943	[ "Radio-frequency identification", "Radio electronics" ]
3,492,508	https://en.wikipedia.org/wiki/Sosrobahu	Sosrobahu is a road construction technique that allows long stretches of flyovers to be constructed above existing major roads with minimum disruption to traffic. The technique was designed by Indonesian engineer Tjokorda Raka Sukawati and involves the construction of the horizontal supports for the highway beside the ...	Sosrobahu	[ "Physics", "Engineering" ]	766	[ "Physical systems", "Road construction", "Construction", "Hydraulics", "Hydraulic tools" ]
3,492,663	https://en.wikipedia.org/wiki/%CE%91-Halo%20ketone	In organic chemistry, an α-halo ketone is a functional group consisting of a ketone group or more generally a carbonyl group with an α-halogen substituent. α-Halo ketones are alkylating agents. Prominent α-halo ketones include phenacyl bromide and chloroacetone. Structure The general structure is RR′C(X)C(=O)R where ...	Α-Halo ketone	[ "Chemistry" ]	789	[ "Functional groups" ]
3,493,610	https://en.wikipedia.org/wiki/Trans%20effect	In inorganic chemistry, the trans effect is the increased lability of ligands that are trans to certain other ligands, which can thus be regarded as trans-directing ligands. It is attributed to electronic effects and it is most notable in square planar complexes, although it can also be observed for octahedral complexe...	Trans effect	[ "Chemistry" ]	712	[ "Coordination chemistry" ]
15,588,021	https://en.wikipedia.org/wiki/Coastal%20engineering	Coastal engineering is a branch of civil engineering concerned with the specific demands posed by constructing at or near the coast, as well as the development of the coast itself. The hydrodynamic impact of especially waves, tides, storm surges and tsunamis and (often) the harsh environment of salt seawater are typic...	Coastal engineering	[ "Engineering" ]	828	[ "Construction", "Coastal engineering", "Coastal construction", "Civil engineering" ]
15,593,113	https://en.wikipedia.org/wiki/Barber%E2%80%93Layden%E2%80%93Power%20effect	The Barber–Layden–Power effect (BLP effect or colloquially Bleep) is a blast wave phenomenon observed in the immediate aftermath of the successful functioning of air-delivered high-drag ordnance at the target. In common with a typical blast wave, the flow field can be approximated as a lead shock wave, followed by a '...	Barber–Layden–Power effect	[ "Chemistry", "Engineering" ]	438	[ "Piping", "Chemical engineering", "Fluid dynamics" ]
23,573,013	https://en.wikipedia.org/wiki/Urban%20stream	An urban stream is a formerly natural waterway that flows through a heavily populated area. Often times, urban streams are low-lying points in the landscape that characterize catchment urbanization. Urban streams are often polluted by urban runoff and combined sewer outflows. Water scarcity makes flow management in the...	Urban stream	[ "Chemistry", "Engineering", "Environmental_science" ]	779	[ "Hydrology", "Chemical engineering", "Water pollution", "Civil engineering", "Hydrology and urban planning", "Environmental engineering" ]
23,573,423	https://en.wikipedia.org/wiki/C17H22N2O	{{DISPLAYTITLE:C17H22N2O}} The molecular formula C17H22N2O may refer to: 4,4'-Bis(dimethylamino)benzhydrol Doxylamine, a sedative antihistamine 5-MeO-DALT, or N,N-diallyl-5-methoxytryptamine Molecular formulas	C17H22N2O	[ "Physics", "Chemistry" ]	87	[ "Molecules", "Set index articles on molecular formulas", "Isomerism", "Molecular formulas", "Matter" ]
23,573,695	https://en.wikipedia.org/wiki/C22H42O2	The molecular formula C22H42O2, 338.57 g/mol, may refer to: Erucic acid Butyl oleate Molecular formulas	C22H42O2	[ "Physics", "Chemistry" ]	34	[ "Molecules", "Set index articles on molecular formulas", "Isomerism", "Molecular formulas", "Matter" ]
23,574,024	https://en.wikipedia.org/wiki/Eurocarbdb	EuroCarbDB was an EU-funded initiative for the creation of software and standards for the systematic collection of carbohydrate structures and their experimental data, which was discontinued in 2010 due to lack of funding. The project included a database of known carbohydrate structures and experimental data, specifica...	Eurocarbdb	[ "Chemistry", "Biology" ]	317	[ "Biomolecules by chemical classification", "Carbohydrates", "Bioinformatics software", "Organic compounds", "Bioinformatics", "Carbohydrate chemistry", "Biological databases" ]
17,308,643	https://en.wikipedia.org/wiki/V%20speeds	In aviation, V-speeds are standard terms used to define airspeeds important or useful to the operation of all aircraft. These speeds are derived from data obtained by aircraft designers and manufacturers during flight testing for aircraft type-certification. Using them is considered a best practice to maximize aviation...	V speeds	[ "Physics" ]	860	[ "Wikipedia categories named after physical quantities", "Airspeed", "Physical quantities" ]
17,314,163	https://en.wikipedia.org/wiki/Spin%20column-based%20nucleic%20acid%20purification	Spin column-based nucleic acid purification is a solid phase extraction method to quickly purify nucleic acids. This method relies on the fact that nucleic acid will bind to the solid phase of silica under certain conditions. Procedure The different stages of the method are lyse, bind, wash, and elute. More specifica...	Spin column-based nucleic acid purification	[ "Chemistry", "Biology" ]	772	[ "Biochemistry methods", "Biochemistry", "Molecular biology" ]
17,314,993	https://en.wikipedia.org/wiki/Hosford%20yield%20criterion	The Hosford yield criterion is a function that is used to determine whether a material has undergone plastic yielding under the action of stress. Hosford yield criterion for isotropic plasticity The Hosford yield criterion for isotropic materials is a generalization of the von Mises yield criterion. It has the form...	Hosford yield criterion	[ "Physics", "Materials_science", "Engineering" ]	522	[ "Deformation (mechanics)", "Mechanics", "Mechanical engineering", "Plasticity (physics)" ]
17,315,193	https://en.wikipedia.org/wiki/Lankford%20coefficient	The Lankford coefficient (also called Lankford value, R-value, or plastic strain ratio) is a measure of the plastic anisotropy of a rolled sheet metal. This scalar quantity is used extensively as an indicator of the formability of recrystallized low-carbon steel sheets. Definition If and are the coordinate directi...	Lankford coefficient	[ "Physics", "Materials_science" ]	388	[ "Deformation (mechanics)", "Solid mechanics", "Mechanics", "Plasticity (physics)" ]
17,318,563	https://en.wikipedia.org/wiki/Deflection%20%28engineering%29	In structural engineering, deflection is the degree to which a part of a long structural element (such as beam) is deformed laterally (in the direction transverse to its longitudinal axis) under a load. It may be quantified in terms of an angle (angular displacement) or a distance (linear displacement). A longitudinal ...	Deflection (engineering)	[ "Engineering" ]	1,398	[ "Structural engineering", "Structural analysis", "Civil engineering", "Mechanical engineering", "Aerospace engineering", "Engineering mechanics" ]
17,318,637	https://en.wikipedia.org/wiki/Coupling%20from%20the%20past	Among Markov chain Monte Carlo (MCMC) algorithms, coupling from the past is a method for sampling from the stationary distribution of a Markov chain. Contrary to many MCMC algorithms, coupling from the past gives in principle a perfect sample from the stationary distribution. It was invented by James Propp and David Wi...	Coupling from the past	[ "Physics" ]	507	[ "Monte Carlo methods", "Computational physics" ]
20,720,013	https://en.wikipedia.org/wiki/MOWSE	MOWSE (for Molecular Weight Search) is a method to identify proteins from the molecular weight of peptides created by proteolytic digestion and measured with mass spectrometry. Development The MOWSE algorithm was developed by Darryl Pappin at the Imperial Cancer Research Fund and Alan Bleasby at the SERC Daresbury La...	MOWSE	[ "Physics", "Chemistry", "Engineering", "Biology" ]	145	[ "Biological engineering", "Spectrum (physical sciences)", "Chemistry software", "Bioinformatics stubs", "Biotechnology stubs", "Biochemistry stubs", "Bioinformatics", "Mass spectrometry software", "Mass spectrometry" ]
20,722,742	https://en.wikipedia.org/wiki/Pancratistatin	Pancratistatin (PST) is a natural compound initially extracted from spider lily, a Hawaiian native plant of the family Amaryllidaceae (AMD). Occurrence Pancratistatin occurs naturally in Hawaiian spider lily, a flowering plant within the family Amaryllidaceae. Pancratistatin is mostly found in the bulb tissues of spi...	Pancratistatin	[ "Chemistry" ]	1,721	[ "Quinoline alkaloids", "Alkaloids by chemical classification", "Tetrahydroisoquinoline alkaloids", "Chemical synthesis", "Total synthesis" ]
20,723,498	https://en.wikipedia.org/wiki/Reverse%20transfection	Reverse transfection is a technique for the transfer of genetic material into cells. As DNA is printed on a glass slide for the transfection process (the deliberate introduction of nucleic acids into cells) to occur before the addition of adherent cells, the order of addition of DNA and adherent cells is reverse that o...	Reverse transfection	[ "Chemistry", "Biology" ]	1,222	[ "Gene expression", "Molecular biology techniques", "Molecular genetics", "Cellular processes", "Molecular biology", "Biochemistry" ]
8,108,613	https://en.wikipedia.org/wiki/Pinch%20valve	A pinch valve is a full bore or fully ported type of control valve which uses a pinching effect to obstruct fluid flow. Operating principle Pinch valves employ an elastic tubing (sleeve/hose) and a device that directly contacts the tubing (body). Forcing the tubing together creates a seal that is equivalent to the tu...	Pinch valve	[ "Physics", "Chemistry" ]	372	[ "Physical systems", "Valves", "Hydraulics", "Piping" ]
8,108,692	https://en.wikipedia.org/wiki/Dan%20Walls	Daniel Frank Walls FRS (13 September 1942 – 12 May 1999) was a New Zealand theoretical physicist specialising in quantum optics. Education Walls gained a BSc in physics and mathematics and a first class honours MSc in physics at the University of Auckland. He then went to Harvard University as a Fulbright Scholar, obt...	Dan Walls	[ "Physics" ]	834	[ "Theoretical physics", "Quantum physicists", "Theoretical physicists", "Quantum mechanics" ]
8,110,214	https://en.wikipedia.org/wiki/Hammer%20%28firearms%29	The hammer is a part of a firearm that is used to strike the percussion cap/primer, or a separate firing pin, to ignite the propellant and fire the projectile. It is so called because it resembles a hammer in both form and function. The hammer itself is a metal piece that forcefully rotates about a pivot point. The te...	Hammer (firearms)	[ "Technology" ]	1,015	[ "Firearm components", "Components" ]
8,111,079	https://en.wikipedia.org/wiki/Gravitational%20wave	Gravitational waves are transient displacements in a gravitational fieldgenerated by the relative motion of gravitating massesthat radiate outward from their source at the speed of light. They were proposed by Oliver Heaviside in 1893 and then later by Henri Poincaré in 1905 as the gravitational equivalent of electroma...	Gravitational wave	[ "Physics", "Astronomy" ]	11,392	[ "Physical phenomena", "Black holes", "Physical quantities", "Concepts in astronomy", "Unsolved problems in physics", "Astrophysics", "Waves", "Density", "Stellar phenomena", "Gravitational waves", "Astronomical objects" ]
8,112,674	https://en.wikipedia.org/wiki/Mebeverine	Mebeverine is a drug used to alleviate some of the symptoms of irritable bowel syndrome. It works by relaxing the muscles in and around the gut. Medical use Mebeverine is used to alleviate some of the symptoms of irritable bowel syndrome (IBS) and related conditions; specifically stomach pain and cramps, persistent di...	Mebeverine	[ "Chemistry" ]	583	[ "Amines", "Bases (chemistry)", "Functional groups" ]
8,112,701	https://en.wikipedia.org/wiki/Seliwanoff%27s%20test	Seliwanoff’s test is a chemical test which distinguishes between aldose and ketose sugars. If the sugar contains a ketone group, it is a ketose. If a sugar contains an aldehyde group, it is an aldose. This test relies on the principle that, when heated, ketoses are more rapidly dehydrated than aldoses. It is named afte...	Seliwanoff's test	[ "Chemistry", "Biology" ]	328	[ "Biochemistry methods", "Biochemistry detection methods", "Chemical tests", "Carbohydrate methods", "Carbohydrate chemistry", "Reagents for organic chemistry" ]
8,113,126	https://en.wikipedia.org/wiki/Globally%20hyperbolic%20manifold	In mathematical physics, global hyperbolicity is a certain condition on the causal structure of a spacetime manifold (that is, a Lorentzian manifold). It is called hyperbolic in analogy with the linear theory of wave propagation, where the future state of a system is specified by initial conditions. (In turn, the lea...	Globally hyperbolic manifold	[ "Physics" ]	1,274	[ "General relativity", "Theory of relativity" ]
8,113,640	https://en.wikipedia.org/wiki/Tup%C3%AD	Tupí, also known as formatge de tupí, is a fermented cheese of a certain area of the Pyrenees and Pre-Pyrenees made from cows' or sheep's milk. It is a cheese traditionally prepared in the mountainous Pallars region, as well as in the Cerdanya and the Alt Urgell. Together with the llenguat, another fermented cheese of...	Tupí	[ "Biology" ]	347	[ "Fermented foods", "Biotechnology products" ]
17,322,852	https://en.wikipedia.org/wiki/Quasi%20Fermi%20level	A quasi Fermi level is a term used in quantum mechanics and especially in solid state physics for the Fermi level (chemical potential of electrons) that describes the population of electrons separately in the conduction band and valence band, when their populations are displaced from equilibrium. This displacement coul...	Quasi Fermi level	[ "Physics", "Chemistry", "Materials_science" ]	966	[ "Electron", "Electronic band structures", "Condensed matter physics" ]
17,323,921	https://en.wikipedia.org/wiki/Lagrangian%20analysis	Lagrangian analysis is the use of Lagrangian coordinates to analyze various problems in continuum mechanics. Lagrangian analysis may be used to analyze currents and flows of various materials by analyzing data collected from gauges/sensors embedded in the material which freely move with the motion of the material. A c...	Lagrangian analysis	[ "Chemistry", "Engineering" ]	118	[ "Piping", "Chemical engineering", "Fluid dynamics" ]
10,473,148	https://en.wikipedia.org/wiki/Dust%20explosion	A dust explosion is the rapid combustion of fine particles suspended in the air within an enclosed location. Dust explosions can occur where any dispersed powdered combustible material is present in high-enough concentrations in the atmosphere or other oxidizing gaseous medium, such as pure oxygen. In cases when fuel p...	Dust explosion	[ "Chemistry" ]	2,232	[ "Dust explosions", "Particulates", "Chemical processes", "nan", "Explosions", "Chemical process engineering", "Particle technology" ]
10,473,995	https://en.wikipedia.org/wiki/Max%20Planck%20Institute%20for%20Sustainable%20Materials	The Max Planck Institute for Sustainable Materials () is a research institute of the Max Planck Society located in Düsseldorf. Since 1971, it has been legally independent and organized in the form of a GmbH, which was formerly supported and financed in equal parts by the Max Planck Society and the Steel Institute VDEh....	Max Planck Institute for Sustainable Materials	[ "Materials_science", "Engineering" ]	797	[ "Materials science organizations", "Materials science" ]
10,475,148	https://en.wikipedia.org/wiki/PCGamerBike	The PCGamerBike is an exercise bike that can interact with computer games. It uses magnets to produce resistance which makes the bike relatively quiet in operation, and comes with software that will automatically logs calories burned, distance and speed to a daily graph. Types There are two versions of the PCGamerBik...	PCGamerBike	[ "Technology" ]	333	[ "Video game accessories", "Components" ]
10,477,221	https://en.wikipedia.org/wiki/Erd%C5%91s%E2%80%93R%C3%A9nyi%20model	In the mathematical field of graph theory, the Erdős–Rényi model refers to one of two closely related models for generating random graphs or the evolution of a random network. These models are named after Hungarian mathematicians Paul Erdős and Alfréd Rényi, who introduced one of the models in 1959. Edgar Gilbert intro...	Erdős–Rényi model	[ "Mathematics" ]	2,061	[ "Mathematical relations", "Graph theory", "Random graphs" ]
10,478,387	https://en.wikipedia.org/wiki/Mimeoscope	In 1914–16, the A.B. Dick Company patented the mimeoscope. A mimeoscope, which is basically a light table, had an electrically illuminated glass top on which the operator traced drawings onto mimeograph stencils. The stencil took the place of tracing paper. The electric light was needed because the stencils were heavie...	Mimeoscope	[ "Physics", "Technology" ]	171	[ "Physical systems", "Machines", "Printing devices" ]
10,480,045	https://en.wikipedia.org/wiki/Epidemiology%20of%20domestic%20violence	Domestic violence occurs across the world, in various cultures, and affects people across society, at all levels of economic status; however, indicators of lower socioeconomic status (such as unemployment and low income) have been shown to be risk factors for higher levels of domestic violence in several studies. In th...	Epidemiology of domestic violence	[ "Biology", "Environmental_science" ]	4,081	[ "Behavior", "Abuse", "Violence", "Aggression", "Epidemiology", "Environmental social science", "Human behavior" ]
4,705,100	https://en.wikipedia.org/wiki/Nernst%E2%80%93Planck%20equation	The Nernst–Planck equation is a conservation of mass equation used to describe the motion of a charged chemical species in a fluid medium. It extends Fick's law of diffusion for the case where the diffusing particles are also moved with respect to the fluid by electrostatic forces. It is named after Walther Nernst and ...	Nernst–Planck equation	[ "Physics", "Chemistry", "Mathematics", "Engineering" ]	410	[ "Transport phenomena", "Physical phenomena", "Applied and interdisciplinary physics", "Diffusion", "Chemical engineering", "Mathematical objects", "Equations", "Electrochemistry", "nan", "Statistical mechanics", "Physical chemistry", "Electrochemical equations" ]
4,709,191	https://en.wikipedia.org/wiki/PA512	PA512 (Serbian ПА512) was an industrial programmable logic controller - a portable, computer developed by Ivo Lola Ribar Institute of Serbia in 1980. It was followed six years late by the LPA512. Portable computers Industrial automation	PA512	[ "Technology", "Engineering" ]	53	[ "Computer hardware stubs", "Automation", "Industrial engineering", "Computing stubs", "Industrial automation" ]
4,709,391	https://en.wikipedia.org/wiki/Biosafety%20Clearing-House	The Biosafety Clearing-House is an international mechanism that exchanges information about the movement of genetically modified organisms, established under the Cartagena Protocol on Biosafety. It assists Parties (i.e. governments that have ratified the Protocol) to implement the protocol’s provisions and to facilitat...	Biosafety Clearing-House	[ "Engineering", "Biology" ]	1,160	[ "Convention on Biological Diversity", "Biodiversity", "Genetic engineering", "Genetically modified organisms" ]
22,192,834	https://en.wikipedia.org/wiki/Random%20tree	In mathematics and computer science, a random tree is a tree or arborescence that is formed by a stochastic process. Types of random trees include: Uniform spanning tree, a spanning tree of a given graph in which each different tree is equally likely to be selected Random minimal spanning tree, spanning trees of a grap...	Random tree	[ "Mathematics" ]	271	[ "Mathematical relations", "Graph theory", "Random graphs" ]
12,763,523	https://en.wikipedia.org/wiki/Brifentanil	Brifentanil (A-3331) is an opioid analgesic that is an analogue of fentanyl and was developed in the early 1990s. Brifentanil is most similar to highly potent, short-acting fentanyl analogues such as alfentanil. The effects of brifentanil are very similar to those of alfentanil, with strong but short lasting analges...	Brifentanil	[ "Chemistry" ]	220	[ "Organic compounds", "Functional groups", "Ethers", "Ureas" ]
12,765,046	https://en.wikipedia.org/wiki/Electrostatic%20spray-assisted%20vapour%20deposition	Electrostatic spray-assisted vapour deposition (ESAVD) is a technique (developed by a company called IMPT) to deposit both thin and thick layers of a coating onto various substrates. In simple terms chemical precursors are sprayed across an electrostatic field towards a heated substrate, the chemicals undergo a control...	Electrostatic spray-assisted vapour deposition	[ "Chemistry", "Materials_science", "Mathematics" ]	651	[ "Microtechnology", "Thin film deposition", "Coatings", "Thin films", "Semiconductor device fabrication", "Planes (geometry)", "Solid state engineering", "Chemical process stubs" ]
12,765,883	https://en.wikipedia.org/wiki/Metabolic%20imprinting	Metabolic imprinting refers to the long-term physiological and metabolic effects that an offspring's prenatal and postnatal environments have on them. Perinatal nutrition has been identified as a significant factor in determining an offspring's likelihood of it being predisposed to developing cardiovascular disease, ob...	Metabolic imprinting	[ "Chemistry", "Biology" ]	1,010	[ "Cellular processes", "Biochemistry", "Metabolism" ]
12,767,009	https://en.wikipedia.org/wiki/Plate%20count%20agar	Plate count agar (PCA), also called standard methods agar (SMA), is a microbiological growth medium commonly used to assess or to monitor "total" or viable bacterial growth of a sample. PCA is not a selective medium. The total number of living aerobic bacteria can be determined using a plate count agar which is a subs...	Plate count agar	[ "Biology" ]	784	[ "Microbiological media", "Microbiology equipment" ]
12,767,994	https://en.wikipedia.org/wiki/Triclocarban	Triclocarban (sometimes abbreviated as TCC) is an antibacterial chemical once common in, but now phased out of, personal care products like soaps and lotions. It was originally developed for the medical field. Although the mode of action is unknown, TCC can be effective in fighting infections by targeting the growth of...	Triclocarban	[ "Chemistry", "Biology" ]	3,413	[ "Fungicides", "Antimicrobials", "Endocrine disruptors", "Organic compounds", "Biocides", "Ureas" ]
12,768,250	https://en.wikipedia.org/wiki/Etanautine	Etanautine, also known as diphenhydramine monoacefyllinate, is an anticholinergic used as an antiparkinsonian agent. It is a 1:1 salt of diphenhydramine with acefylline, similar to the diphenhydramine/8-chlorotheophylline combination product dimenhydrinate. As with dimenhydrinate, the stimulant effect of the etanautin...	Etanautine	[ "Chemistry" ]	196	[ "Organic compounds", "Functional groups", "Ethers" ]
12,770,444	https://en.wikipedia.org/wiki/Cooling%20flow	A cooling flow occurs when the intracluster medium (ICM) in the centres of galaxy clusters should be rapidly cooling at the rate of tens to thousands of solar masses per year. This should happen as the ICM (a plasma) is quickly losing its energy by the emission of X-rays. The X-ray brightness of the ICM is proportional...	Cooling flow	[ "Physics", "Astronomy" ]	430	[ "Space plasmas", "Galaxy clusters", "Astrophysics", "Extragalactic astronomy", "Astronomical objects", "Astronomical sub-disciplines" ]
19,523,646	https://en.wikipedia.org/wiki/Tektronix%20hex%20format	Tektronix hex format (TEK HEX) and Extended Tektronix hex format (EXT TEK HEX or XTEK) / Extended Tektronix Object Format are ASCII-based hexadecimal file formats, created by Tektronix, for conveying binary information for applications like programming microcontrollers, EPROMs, and other kinds of chips. Each line of a...	Tektronix hex format	[ "Technology", "Engineering" ]	631	[ "Embedded systems", "Computer science", "Computer engineering", "Computer systems" ]
6,157,978	https://en.wikipedia.org/wiki/Micro%20heat%20exchanger	Micro heat exchangers, Micro-scale heat exchangers, or microstructured heat exchangers are heat exchangers in which (at least one) fluid flows in lateral confinements with typical dimensions below 1 mm. The most typical such confinement are microchannels, which are channels with a hydraulic diameter below 1 mm. Microc...	Micro heat exchanger	[ "Physics", "Chemistry", "Materials_science", "Engineering" ]	541	[ "Transport phenomena", "Physical phenomena", "Heat transfer", "Microfluidics", "Microtechnology", "Chemical equipment", "Materials science", "Heat exchangers", "Thermodynamics" ]
6,161,213	https://en.wikipedia.org/wiki/Pollination%20syndrome	Pollination syndromes are suites of flower traits that have evolved in response to natural selection imposed by different pollen vectors, which can be abiotic (wind and water) or biotic, such as birds, bees, flies, and so forth through a process called pollinator-mediated selection. These traits include flower shape, s...	Pollination syndrome	[ "Biology" ]	3,180	[ "Evolutionary biology", "Plant morphology", "Plants" ]
6,161,274	https://en.wikipedia.org/wiki/Poisson%E2%80%93Boltzmann%20equation	The Poisson–Boltzmann equation describes the distribution of the electric potential in solution in the direction normal to a charged surface. This distribution is important to determine how the electrostatic interactions will affect the molecules in solution. It is expressed as a differential equation of the electric ...	Poisson–Boltzmann equation	[ "Physics", "Chemistry" ]	2,956	[ "Colloidal chemistry", "Molecular physics", "Equations of physics", "Eponymous equations of physics", "Colloids", "Computational physics", "Surface science", "Molecular dynamics", "Computational chemistry" ]
456,410	https://en.wikipedia.org/wiki/Crystal%20system	In crystallography, a crystal system is a set of point groups (a group of geometric symmetries with at least one fixed point). A lattice system is a set of Bravais lattices. Space groups are classified into crystal systems according to their point groups, and into lattice systems according to their Bravais lattices. Cr...	Crystal system	[ "Physics", "Chemistry", "Materials_science", "Mathematics", "Engineering" ]	1,749	[ "Materials science", "Crystal systems", "Crystallography", "Condensed matter physics", "Geometry", "Symmetry" ]
456,715	https://en.wikipedia.org/wiki/Kerr%20metric	The Kerr metric or Kerr geometry describes the geometry of empty spacetime around a rotating uncharged axially symmetric black hole with a quasispherical event horizon. The Kerr metric is an exact solution of the Einstein field equations of general relativity; these equations are highly non-linear, which makes exact so...	Kerr metric	[ "Physics", "Astronomy", "Mathematics", "Engineering" ]	5,771	[ "Exact solutions in general relativity", "Black holes", "Physical phenomena", "Tensors", "Physical quantities", "Unsolved problems in physics", "Mathematical objects", "Astrophysics", "Equations", "Metric tensors", "Density", "Stellar phenomena", "Astronomical objects" ]
457,036	https://en.wikipedia.org/wiki/Sulfur%20hexafluoride	Sulfur hexafluoride or sulphur hexafluoride (British spelling) is an inorganic compound with the formula SF6. It is a colorless, odorless, non-flammable, and non-toxic gas. has an octahedral geometry, consisting of six fluorine atoms attached to a central sulfur atom. It is a hypervalent molecule. Typical for a nonpo...	Sulfur hexafluoride	[ "Physics", "Chemistry", "Environmental_science" ]	2,777	[ "Molecules", "Environmental chemistry", "Hypervalent molecules", "Industrial gases", "Chemical process engineering", "Greenhouse gases", "Matter" ]
457,064	https://en.wikipedia.org/wiki/Galois%20extension	In mathematics, a Galois extension is an algebraic field extension E/F that is normal and separable; or equivalently, E/F is algebraic, and the field fixed by the automorphism group Aut(E/F) is precisely the base field F. The significance of being a Galois extension is that the extension has a Galois group and obeys th...	Galois extension	[ "Mathematics" ]	644	[ "Algebraic number theory", "Number theory" ]
457,314	https://en.wikipedia.org/wiki/Merck%20Index	The Merck Index is an encyclopedia of chemicals, drugs and biologicals with over 10,000 monographs on single substances or groups of related compounds published online by the Royal Society of Chemistry. History The first edition of the Merck's Index was published in 1889 by the German chemical company Emanuel Merck an...	Merck Index	[ "Chemistry", "Biology" ]	608	[ "Bioinformatics", "Chemical databases", "Biological databases", "Royal Society of Chemistry" ]
457,579	https://en.wikipedia.org/wiki/Solid%20modeling	Solid modeling (or solid modelling) is a consistent set of principles for mathematical and computer modeling of three-dimensional shapes (solids). Solid modeling is distinguished within the broader related areas of geometric modeling and computer graphics, such as 3D modeling, by its emphasis on physical fidelity. Toge...	Solid modeling	[ "Physics", "Engineering" ]	3,949	[ "Computer-aided design", "Design engineering", "Euclidean solid geometry", "Space", "Spacetime" ]
457,673	https://en.wikipedia.org/wiki/Implantable%20cardioverter-defibrillator	An implantable cardioverter-defibrillator (ICD) or automated implantable cardioverter defibrillator (AICD) is a device implantable inside the body, able to perform defibrillation, and depending on the type, cardioversion and pacing of the heart. The ICD is the first-line treatment and prophylactic therapy for patients ...	Implantable cardioverter-defibrillator	[ "Biology" ]	3,405	[ "Medical devices", "Medical technology" ]
458,202	https://en.wikipedia.org/wiki/Semiheavy%20water	Semiheavy water is the result of replacing one of the protium (normal hydrogen, H) in normal water with deuterium (H; or less correctly, D). It exists whenever there is water with H and H in the mix. This is because hydrogen atoms (H) are rapidly exchanged between water molecules. Water with 50% H and 50% H, is about 5...	Semiheavy water	[ "Physics", "Chemistry" ]	356	[ "Forms of water", "Phases of matter", "Matter" ]
458,253	https://en.wikipedia.org/wiki/Secret%20sharing	Secret sharing (also called secret splitting) refers to methods for distributing a secret among a group, in such a way that no individual holds any intelligible information about the secret, but when a sufficient number of individuals combine their 'shares', the secret may be reconstructed. Whereas insecure secret shar...	Secret sharing	[ "Mathematics", "Engineering" ]	3,990	[ "Applied mathematics", "Cryptography", "Cybersecurity engineering" ]
458,540	https://en.wikipedia.org/wiki/Dry%20stone	Dry stone, sometimes called drystack or, in Scotland, drystane, is a building method by which structures are constructed from stones without any mortar to bind them together. A certain amount of binding is obtained through the use of carefully selected interlocking stones. Dry stone construction is best known in the ...	Dry stone	[ "Physics", "Technology", "Engineering" ]	3,158	[ "Structural engineering", "Natural materials", "Building engineering", "Architecture", "Construction", "Stonemasonry", "Materials", "Architectural elements", "Types of wall", "Components", "Matter", "Building materials" ]
458,565	https://en.wikipedia.org/wiki/Dimensionless%20physical%20constant	In physics, a dimensionless physical constant is a physical constant that is dimensionless, i.e. a pure number having no units attached and having a numerical value that is independent of whatever system of units may be used. The concept should not be confused with dimensionless numbers, that are not universally const...	Dimensionless physical constant	[ "Physics" ]	2,277	[ "Dimensionless constants", "Physical constants", "Physical quantities", "Fundamental constants" ]
458,675	https://en.wikipedia.org/wiki/Brinell%20scale	The Brinell scale (pronounced ) measures the indentation hardness of materials. It determines hardness through the scale of penetration of an indenter, loaded on a material test-piece. It is one of several definitions of hardness in materials science. The hardness scale is expressed as the Brinell Hardness Number (BHN ...	Brinell scale	[ "Materials_science", "Mathematics" ]	904	[ "Dimensionless numbers", "Mathematical objects", "Materials testing", "Hardness tests", "Numbers" ]
458,866	https://en.wikipedia.org/wiki/Solid%20mechanics	Solid mechanics (also known as mechanics of solids) is the branch of continuum mechanics that studies the behavior of solid materials, especially their motion and deformation under the action of forces, temperature changes, phase changes, and other external or internal agents. Solid mechanics is fundamental for civil,...	Solid mechanics	[ "Physics", "Engineering" ]	1,731	[ "Solid mechanics", "Continuum mechanics", "Classical mechanics", "Mechanics", "Mechanical engineering" ]
2,547,532	https://en.wikipedia.org/wiki/Stress%20intensity%20factor	In fracture mechanics, the stress intensity factor () is used to predict the stress state ("stress intensity") near the tip of a crack or notch caused by a remote load or residual stresses. It is a theoretical construct usually applied to a homogeneous, linear elastic material and is useful for providing a failure cri...	Stress intensity factor	[ "Materials_science", "Engineering" ]	1,303	[ "Structural engineering", "Materials degradation", "Materials science", "Fracture mechanics" ]
2,549,795	https://en.wikipedia.org/wiki/Bioswale	Bioswales are channels designed to concentrate and convey stormwater runoff while removing debris and pollution. Bioswales can also be beneficial in recharging groundwater. Bioswales are typically vegetated, mulched, or xeriscaped. They consist of a swaled drainage course with gently sloped sides (less than 6%). Bios...	Bioswale	[ "Chemistry", "Engineering", "Environmental_science" ]	2,503	[ "Hydrology", "Water treatment", "Stormwater management", "Chemical engineering", "Environmental soil science", "Water pollution", "Civil engineering", "Hydrology and urban planning", "Environmental engineering", "Waste treatment technology" ]
2,552,441	https://en.wikipedia.org/wiki/Event%20%28particle%20physics%29	In particle physics, an event refers to the results just after a fundamental interaction takes place between subatomic particles, occurring in a very short time span, at a well-localized region of space. Because of the uncertainty principle, an event in particle physics does not have quite the same meaning as it does i...	Event (particle physics)	[ "Physics" ]	356	[ "Experimental physics", "Particle physics", "Experimental particle physics" ]
2,552,636	https://en.wikipedia.org/wiki/Lund%20string%20model	In particle physics, the Lund string model is a phenomenological model of hadronization. It treats all but the highest-energy gluons as field lines, which are attracted to each other due to the gluon self-interaction and so form a narrow tube (or string) of strong color field. Compared to electric or magnetic field lin...	Lund string model	[ "Physics" ]	343	[ "Experimental physics", "Particle physics", "Experimental particle physics" ]
15,603,775	https://en.wikipedia.org/wiki/Nitrogen%E2%80%93phosphorus%20detector	The nitrogen–phosphorus detector (NPD) is also known as thermionic specific detector (TSD) is a detector commonly used with gas chromatography, in which thermal energy is used to ionize an analyte. It is a type of flame thermionic detector (FTD), the other being the alkali flame-ionization detector (AFID also known as ...	Nitrogen–phosphorus detector	[ "Chemistry" ]	268	[ "Chromatography", "Gas chromatography", "Analytical chemistry stubs" ]
23,577,988	https://en.wikipedia.org/wiki/Chi%20site	A Chi site or Chi sequence is a short stretch of DNA in the genome of a bacterium near which homologous recombination is more likely to occur than on average across the genome. Chi sites serve as stimulators of DNA double-strand break repair in bacteria, which can arise from radiation or chemical treatments, or result ...	Chi site	[ "Chemistry", "Biology" ]	877	[ "Biochemistry", "Genetics", "nan" ]
23,579,022	https://en.wikipedia.org/wiki/Artur%20Avila	Artur Avila Cordeiro de Melo (born 29 June 1979) is a Brazilian mathematician working primarily in the fields of dynamical systems and spectral theory. He is one of the winners of the 2014 Fields Medal, being the first Latin American and lusophone to win such award. He has been a researcher at both the IMPA and the CNR...	Artur Avila	[ "Mathematics" ]	1,209	[ "Mathematical analysis", "Dynamical systems theorists", "Mathematical analysts", "Dynamical systems" ]
23,579,401	https://en.wikipedia.org/wiki/C16H10	{{DISPLAYTITLE:C16H10}} The molecular formula C16H10 (molar mass: 202.25 g/mol, exact mass: 202.0783 u) may refer to: Dibenzopentalene Fluoranthene Pyrene Molecular formulas	C16H10	[ "Physics", "Chemistry" ]	63	[ "Molecules", "Set index articles on molecular formulas", "Isomerism", "Molecular formulas", "Matter" ]
23,580,875	https://en.wikipedia.org/wiki/C17H21NO3	{{DISPLAYTITLE:C17H21NO3}} The molecular formula C17H21NO3 (molar mass: 287.35 g/mol) may refer to: Dihydromorphine Etodolac Galantamine Mesembrenone Ritodrine Thesinine Molecular formulas	C17H21NO3	[ "Physics", "Chemistry" ]	69	[ "Molecules", "Set index articles on molecular formulas", "Isomerism", "Molecular formulas", "Matter" ]
23,580,901	https://en.wikipedia.org/wiki/C4H9NO2	The molecular formula (molar mass: 103.12 g/mol) may refer to: α-Aminobutyric acid β-Aminobutyric acid γ-Aminobutyric acid (GABA) 2-Aminoisobutyric acid 3-Aminoisobutyric acid Nitroisobutane n-Nitrobutane Butyl nitrite Dimethylglycine Isobutyl nitrite Molecular formulas	C4H9NO2	[ "Physics", "Chemistry" ]	95	[ "Molecules", "Set index articles on molecular formulas", "Isomerism", "Molecular formulas", "Matter" ]
23,581,112	https://en.wikipedia.org/wiki/Selective%20receptor%20modulator	In the field of pharmacology, a selective receptor modulator or SRM is a type of drug that has different effects in different tissues. A SRM may behave as an agonist in some tissues while as an antagonist in others. Hence selective receptor modulators are sometimes referred to as tissue selective drugs or mixed agoni...	Selective receptor modulator	[ "Chemistry" ]	215	[ "Pharmacology", "Pharmacology stubs", "Pharmacodynamics", "Medicinal chemistry stubs" ]
1,836,606	https://en.wikipedia.org/wiki/Allylic%20rearrangement	An allylic rearrangement or allylic shift is an organic chemical reaction in which reaction at a center vicinal to a double bond causes the double bond to shift to an adjacent pair of atoms: It is encountered in both nucleophilic and electrophilic substitution, although it is usually suppressed relative to non-allylic...	Allylic rearrangement	[ "Chemistry" ]	648	[ "Reaction mechanisms", "Organic reactions", "Physical organic chemistry", "Chemical kinetics", "Rearrangement reactions" ]
1,837,480	https://en.wikipedia.org/wiki/Knudsen%20gas	A Knudsen gas is a gas in a state of such low density that the average distance travelled by the gas molecules between collisions (mean free path) is greater than the diameter of the receptacle that contains it. If the mean free path is much greater than the diameter, the flow regime is dominated by collisions between ...	Knudsen gas	[ "Physics", "Chemistry" ]	322	[ "Statistical mechanics stubs", "Matter", "Phases of matter", "Statistical mechanics", "Physical chemistry stubs", "Gases" ]
1,837,735	https://en.wikipedia.org/wiki/Wittig%20reaction	The Wittig reaction or Wittig olefination is a chemical reaction of an aldehyde or ketone with a triphenyl phosphonium ylide called a Wittig reagent. Wittig reactions are most commonly used to convert aldehydes and ketones to alkenes. Most often, the Wittig reaction is used to introduce a methylene group using methyl...	Wittig reaction	[ "Chemistry" ]	1,547	[ "Carbon-carbon bond forming reactions", "Olefination reactions", "Coupling reactions", "Organic reactions", "Name reactions" ]
1,838,548	https://en.wikipedia.org/wiki/Active%20Body%20Control	Active Body Control, or ABC, is the Mercedes-Benz brand name used to describe electronically controlled hydropneumatic suspension. This suspension improves ride quality and allows for control of the vehicle body motions, allowing for reduced body roll in many driving situations including cornering, accelerating, and b...	Active Body Control	[ "Physics" ]	1,943	[ "Mechanics", "Mechanical power control" ]
1,840,129	https://en.wikipedia.org/wiki/Solomon%20Marcus	Solomon Marcus (; 1 March 1925 – 17 March 2016) was a Romanian mathematician, member of the Mathematical Section of the Romanian Academy (full member from 2001) and emeritus professor of the University of Bucharest's Faculty of Mathematics. His main research was in the fields of mathematical analysis, mathematical and...	Solomon Marcus	[ "Mathematics" ]	957	[ "Mathematical analysis", "Mathematical analysts" ]
1,840,608	https://en.wikipedia.org/wiki/S/2004%20S%2012	S/2004 S 12 is a natural satellite of Saturn. Its discovery was announced by Scott S. Sheppard, David C. Jewitt, Jan Kleyna, and Brian G. Marsden on 4 May 2005 from observations taken between 12 December 2004 and 9 March 2005. S/2004 S 12 is about 5 kilometres in diameter, and orbits Saturn at an average distance of 1...	S/2004 S 12	[ "Astronomy" ]	225	[ "Recovered astronomical objects", "Astronomical objects" ]
1,840,863	https://en.wikipedia.org/wiki/Right%20circular%20cylinder	A right circular cylinder is a cylinder whose generatrices are perpendicular to the bases. Thus, in a right circular cylinder, the generatrix and the height have the same measurements. It is also less often called a cylinder of revolution, because it can be obtained by rotating a rectangle of sides and around one of ...	Right circular cylinder	[ "Physics", "Chemistry", "Materials_science", "Mathematics" ]	1,083	[ "Euclidean solid geometry", "Phases of matter", "Space", "Condensed matter physics", "Geometry", "Solids", "Spacetime", "Matter" ]
1,841,012	https://en.wikipedia.org/wiki/Gamma%20counter	A gamma counter is an instrument to measure gamma radiation emitted by a radionuclide. Unlike survey meters, gamma counters are designed to measure small samples of radioactive material, typically with automated measurement and movement of multiple samples. Operation Gamma counters are usually scintillation counters. ...	Gamma counter	[ "Physics", "Technology", "Engineering" ]	355	[ "Nuclear and atomic physics stubs", "Particle detectors", "Measuring instruments", "Nuclear physics" ]
1,841,740	https://en.wikipedia.org/wiki/Curare	Curare ( or ; or ) is a common name for various alkaloid arrow poisons originating from plant extracts. Used as a paralyzing agent by indigenous peoples in Central and South America for hunting and for therapeutic purposes, curare only becomes active when it contaminates a wound or is introduced directly to the bloods...	Curare	[ "Chemistry" ]	3,933	[ "Neurochemistry", "Neurotoxins", "Chemical ecology", "Plant toxins" ]
1,842,075	https://en.wikipedia.org/wiki/Pro-p%20group	In mathematics, a pro-p group (for some prime number p) is a profinite group such that for any open normal subgroup the quotient group is a p-group. Note that, as profinite groups are compact, the open subgroups are exactly the closed subgroups of finite index, so that the discrete quotient group is always finite. ...	Pro-p group	[ "Mathematics" ]	515	[ "Mathematical structures", "Space (mathematics)", "Properties of groups", "Topological spaces", "Topology stubs", "Topology", "Algebraic structures", "Topological groups" ]
18,505,470	https://en.wikipedia.org/wiki/Zinterol	Zinterol is a beta-adrenergic agonist. Its structure is based on soterenol (antiarrhythmic) and phentermine. References Sulfonamides Phenols Phenylethanolamines	Zinterol	[ "Chemistry" ]	54	[ "Pharmacology", "Pharmacology stubs", "Medicinal chemistry stubs" ]
18,505,995	https://en.wikipedia.org/wiki/Resource%20productivity	Resource productivity is the quantity of good or service (outcome) that is obtained through the expenditure of unit resource. This can be expressed in monetary terms as the monetary yield per unit resource. For example, when applied to crop irrigation it is the yield of crop obtained through use of a given volume of i...	Resource productivity	[ "Physics", "Chemistry", "Mathematics", "Environmental_science" ]	302	[ "Energy economics", "Environmental social science stubs", "Thermodynamics", "Environmental social science", "Dynamical systems" ]
18,507,794	https://en.wikipedia.org/wiki/Monocopter	A monocopter or gyropter is a rotorcraft that uses a single rotating blade. The concept is similar to the whirling helicopter seeds that fall from some trees. The name gyropter is sometimes applied to monocopters in which the entire aircraft rotates about its center of mass as it flies. The name "monocopter" has also b...	Monocopter	[ "Engineering" ]	1,780	[ "Aircraft configurations", "Aerospace engineering" ]
1,226,822	https://en.wikipedia.org/wiki/Transforming%20growth%20factor	Transforming growth factor (, or TGF) is used to describe two classes of polypeptide growth factors, TGFα and TGFβ. The name "Transforming Growth Factor" is somewhat arbitrary, since the two classes of TGFs are not structurally or genetically related to one another, and they act through different receptor mechanisms. ...	Transforming growth factor	[ "Chemistry", "Biology" ]	374	[ "Biochemistry", "Neurochemistry", "Growth factors", "Signal transduction" ]
1,227,042	https://en.wikipedia.org/wiki/Failure%20cause	Failure causes are defects in design, process, quality, or part application, which are the underlying cause of a failure or which initiate a process which leads to failure. Where failure depends on the user of the product or process, then human error must be considered. Component failure / failure modes A part failur...	Failure cause	[ "Engineering" ]	795	[ "Systems engineering", "Maintenance", "Mechanical engineering", "Reliability engineering" ]
1,227,154	https://en.wikipedia.org/wiki/Geodetic%20airframe	A geodetic airframe is a type of construction for the airframes of aircraft developed by British aeronautical engineer Barnes Wallis in the 1930s (who sometimes spelt it "geodesic"). Earlier, it was used by Prof. Schütte for the Schütte Lanz Airship SL 1 in 1909. It makes use of a space frame formed from a spirally cro...	Geodetic airframe	[ "Technology", "Engineering" ]	940	[ "Structural system", "Structural engineering", "Building engineering", "Aerospace engineering" ]
1,227,509	https://en.wikipedia.org/wiki/Zaytsev%27s%20rule	In organic chemistry, Zaytsev's rule (or Zaitsev's rule, Saytzeff's rule, Saytzev's rule) is an empirical rule for predicting the favored alkene product(s) in elimination reactions. While at the University of Kazan, Russian chemist Alexander Zaytsev studied a variety of different elimination reactions and observed a ge...	Zaytsev's rule	[ "Chemistry" ]	1,936	[ "Physical organic chemistry" ]
1,227,519	https://en.wikipedia.org/wiki/Horn-satisfiability	In formal logic, Horn-satisfiability, or HORNSAT, is the problem of deciding whether a given set of propositional Horn clauses is satisfiable or not. Horn-satisfiability and Horn clauses are named after Alfred Horn. A Horn clause is a clause with at most one positive literal, called the head of the clause, and any num...	Horn-satisfiability	[ "Mathematics" ]	845	[ "Logic in computer science", "Automated theorem proving", "Mathematical logic", "Computational problems", "P-complete problems", "Mathematical problems", "Satisfiability problems" ]
1,228,638	https://en.wikipedia.org/wiki/Chemical%20shift	In nuclear magnetic resonance (NMR) spectroscopy, the chemical shift is the resonant frequency of an atomic nucleus relative to a standard in a magnetic field. Often the position and number of chemical shifts are diagnostic of the structure of a molecule. Chemical shifts are also used to describe signals in other form...	Chemical shift	[ "Physics", "Chemistry" ]	2,961	[ "Nuclear magnetic resonance", "Spectrum (physical sciences)", "Nuclear magnetic resonance spectroscopy", "Nuclear chemistry", "nan", "Nuclear physics", "Spectroscopy" ]
1,228,679	https://en.wikipedia.org/wiki/Gyromagnetic%20ratio	In physics, the gyromagnetic ratio (also sometimes known as the magnetogyric ratio in other disciplines) of a particle or system is the ratio of its magnetic moment to its angular momentum, and it is often denoted by the symbol , gamma. Its SI unit is the radian per second per tesla (rad⋅s−1⋅T−1) or, equivalently, the ...	Gyromagnetic ratio	[ "Physics", "Chemistry", "Mathematics" ]	1,626	[ "Nuclear magnetic resonance", "Quantum mechanics", "Arithmetic", "Atomic physics", " molecular", "Nuclear physics", "Atomic", "Ratios", " and optical physics" ]
1,229,421	https://en.wikipedia.org/wiki/Robocrane	The Robocrane is a kind of manipulator resembling a Stewart platform but using an octahedral assembly of cables instead of struts. Like the Stewart platform, the Robocrane has six degrees of freedom (x, y, z, pitch, roll, & yaw). It was developed by Dr. James S. Albus of the US National Institute of Standards and Tec...	Robocrane	[ "Engineering" ]	498	[ "Industrial robots" ]
764,468	https://en.wikipedia.org/wiki/Post%27s%20theorem	In computability theory Post's theorem, named after Emil Post, describes the connection between the arithmetical hierarchy and the Turing degrees. Background The statement of Post's theorem uses several concepts relating to definability and recursion theory. This section gives a brief overview of these concepts, wh...	Post's theorem	[ "Mathematics" ]	2,536	[ "Mathematical theorems", "Foundations of mathematics", "Mathematical logic", "Theorems in the foundations of mathematics", "Computability theory", "Mathematical problems", "Mathematical logic hierarchies" ]
765,175	https://en.wikipedia.org/wiki/Air%20lock	An air lock is a restriction of, or complete stoppage of liquid flow caused by vapour trapped in a high point of a liquid-filled pipe system. The gas, being less dense than the liquid, rises to any high points. This phenomenon is known as vapor lock, or air lock. Flushing the system with high flow or pressures can hel...	Air lock	[ "Physics", "Materials_science", "Engineering" ]	763	[ "Construction", "Plumbing", "Water physics", "Condensed matter physics" ]
765,970	https://en.wikipedia.org/wiki/Dehn%20twist	In geometric topology, a branch of mathematics, a Dehn twist is a certain type of self-homeomorphism of a surface (two-dimensional manifold). Definition Suppose that c is a simple closed curve in a closed, orientable surface S. Let A be a tubular neighborhood of c. Then A is an annulus, homeomorphic to the Cartesia...	Dehn twist	[ "Mathematics" ]	737	[ "Topology", "Homeomorphisms", "Geometric topology" ]

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