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18955875 | https://en.wikipedia.org/wiki/Tree | Tree | In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth, plants that are usable as lumber or plants above a specified height. In wider definitions, the tal... | Biology and health sciences | Biology | null |
18955999 | https://en.wikipedia.org/wiki/Desert | Desert | A desert is a landscape where little precipitation occurs and, consequently, living conditions create unique biomes and ecosystems. The lack of vegetation exposes the unprotected surface of the ground to denudation. About one-third of the land surface of the Earth is arid or semi-arid. This includes much of the polar r... | Physical sciences | Terrestrial features | null |
2780135 | https://en.wikipedia.org/wiki/Uninhabited%20island | Uninhabited island | An uninhabited island, desert island, or deserted island, is an island, islet or atoll which lacks permanent human population. Uninhabited islands are often depicted in films or stories about shipwrecked people, and are also used as stereotypes for the idea of "paradise". Some uninhabited islands are protected as natur... | Physical sciences | Oceanic and coastal landforms | Earth science |
2781120 | https://en.wikipedia.org/wiki/Hadal%20zone | Hadal zone | The hadal zone, also known as the hadopelagic zone, is the deepest region of the ocean, lying within oceanic trenches. The hadal zone ranges from around below sea level, and exists in long, narrow, topographic V-shaped depressions.
The cumulative area occupied by the 46 individual hadal habitats worldwide is less tha... | Physical sciences | Oceanography | Earth science |
2782761 | https://en.wikipedia.org/wiki/Southern%20hawker | Southern hawker | The southern hawker or blue hawker (Aeshna cyanea) is a species of hawker dragonfly.
Distribution
The species is one of the most common and most widespread dragonflies in Europe. The range in the Western Palearctic covers a large part of Europe, to Scotland and southern Scandinavia in the north and to Italy (without t... | Biology and health sciences | Odonata | Animals |
2783668 | https://en.wikipedia.org/wiki/Infraspecific%20name | Infraspecific name | In botany, an infraspecific name is the scientific name for any taxon below the rank of species, i.e. an infraspecific taxon or infraspecies. The scientific names of botanical taxa are regulated by the International Code of Nomenclature for algae, fungi, and plants (ICN). As specified by the ICN, the name of an infrasp... | Biology and health sciences | Taxonomic rank | Biology |
22719936 | https://en.wikipedia.org/wiki/Baryon%20acoustic%20oscillations | Baryon acoustic oscillations | In cosmology, baryon acoustic oscillations (BAO) are fluctuations in the density of the visible baryonic matter (normal matter) of the universe, caused by acoustic density waves in the primordial plasma of the early universe. In the same way that supernovae provide a "standard candle" for astronomical observations, BA... | Physical sciences | Physical cosmology | Astronomy |
28787420 | https://en.wikipedia.org/wiki/Pseudoprime | Pseudoprime | A pseudoprime is a probable prime (an integer that shares a property common to all prime numbers) that is not actually prime. Pseudoprimes are classified according to which property of primes they satisfy.
Some sources use the term pseudoprime to describe all probable primes, both composite numbers and actual primes.
... | Mathematics | Prime numbers | null |
533365 | https://en.wikipedia.org/wiki/Rift | Rift | In geology, a rift is a linear zone where the lithosphere is being pulled apart and is an example of extensional tectonics. Typical rift features are a central linear downfaulted depression, called a graben, or more commonly a half-graben with normal faulting and rift-flank uplifts mainly on one side. Where rifts remai... | Physical sciences | Tectonics | Earth science |
533487 | https://en.wikipedia.org/wiki/Energy%20development | Energy development | Energy development is the field of activities focused on obtaining sources of energy from natural resources. These activities include the production of renewable, nuclear, and fossil fuel derived sources of energy, and for the recovery and reuse of energy that would otherwise be wasted. Energy conservation and efficien... | Technology | Energy: General | null |
533867 | https://en.wikipedia.org/wiki/Backup | Backup | In information technology, a backup, or data backup is a copy of computer data taken and stored elsewhere so that it may be used to restore the original after a data loss event. The verb form, referring to the process of doing so, is "back up", whereas the noun and adjective form is "backup". Backups can be used to rec... | Technology | Data storage and memory | null |
534057 | https://en.wikipedia.org/wiki/Triple%20bond | Triple bond | A triple bond in chemistry is a chemical bond between two atoms involving six bonding electrons instead of the usual two in a covalent single bond. Triple bonds are stronger than the equivalent single bonds or double bonds, with a bond order of three. The most common triple bond is in a nitrogen N2 molecule; the second... | Physical sciences | Bonding | Chemistry |
534313 | https://en.wikipedia.org/wiki/Long-tailed%20weasel | Long-tailed weasel | The long-tailed weasel (Neogale frenata), also known as the bridled weasel, masked ermine, or big stoat, is a species of weasel found in North, Central, and South America. It is distinct from the short-tailed weasel (Mustela erminea), also known as a "stoat", a close relation in the genus Mustela that originated in Eur... | Biology and health sciences | Mustelidae | Animals |
534435 | https://en.wikipedia.org/wiki/Lateral%20line | Lateral line | The lateral line, also called the lateral line organ (LLO), is a system of sensory organs found in fish, used to detect movement, vibration, and pressure gradients in the surrounding water. The sensory ability is achieved via modified epithelial cells, known as hair cells, which respond to displacement caused by motion... | Biology and health sciences | Sensory nervous system | Biology |
534710 | https://en.wikipedia.org/wiki/Cone%20cell | Cone cell | Cone cells or cones are photoreceptor cells in the retinas of vertebrates' eyes. They respond differently to different wavelengths of light, and the combination of their responses is responsible for color vision. Cones function best in relatively bright light, called the photopic region, as opposed to rod cells, which ... | Biology and health sciences | Visual system | Biology |
534914 | https://en.wikipedia.org/wiki/Spectral%20graph%20theory | Spectral graph theory | In mathematics, spectral graph theory is the study of the properties of a graph in relationship to the characteristic polynomial, eigenvalues, and eigenvectors of matrices associated with the graph, such as its adjacency matrix or Laplacian matrix.
The adjacency matrix of a simple undirected graph is a real symmetric ... | Mathematics | Graph theory | null |
535191 | https://en.wikipedia.org/wiki/Real-time%20clock | Real-time clock | A real-time clock (RTC) is an electronic device (most often in the form of an integrated circuit) that measures the passage of time.
Although the term often refers to the devices in personal computers, servers and embedded systems, RTCs are present in almost any electronic device which needs to keep accurate time of d... | Technology | Computer hardware | null |
535458 | https://en.wikipedia.org/wiki/Stellar%20atmosphere | Stellar atmosphere | The stellar atmosphere is the outer region of the volume of a star, lying above the stellar core, radiation zone and convection zone.
Overview
The stellar atmosphere is divided into several regions of distinct character:
The photosphere, which is the atmosphere's lowest and coolest layer, is normally its only visibl... | Physical sciences | Stellar astronomy | Astronomy |
536032 | https://en.wikipedia.org/wiki/Developmental%20disorder | Developmental disorder | Developmental disorders comprise a group of psychiatric conditions originating in childhood that involve serious impairment in different areas. There are several ways of using this term. The most narrow concept is used in the category "Specific Disorders of Psychological Development" in the ICD-10. These disorders comp... | Biology and health sciences | Mental disorders | Health |
536059 | https://en.wikipedia.org/wiki/Qanat | Qanat | A qanāt () or kārīz () is a water supply system that was developed in ancient Iran for the purpose of transporting usable water to the surface from an aquifer or a well through an underground aqueduct. Originating approximately 3,000 years ago, its function is essentially the same across the Middle East and North Afric... | Technology | Food, water and health | null |
536063 | https://en.wikipedia.org/wiki/Exothermic%20reaction | Exothermic reaction | In thermochemistry, an exothermic reaction is a "reaction for which the overall standard enthalpy change ΔH⚬ is negative." Exothermic reactions usually release heat. The term is often confused with exergonic reaction, which IUPAC defines as "... a reaction for which the overall standard Gibbs energy change ΔG⚬ is negat... | Physical sciences | Thermodynamics | Chemistry |
536079 | https://en.wikipedia.org/wiki/Unconformity | Unconformity | An unconformity is a buried erosional or non-depositional surface separating two rock masses or strata of different ages, indicating that sediment deposition was not continuous. In general, the older layer was exposed to erosion for an interval of time before deposition of the younger layer, but the term is used to des... | Physical sciences | Stratigraphy | Earth science |
536080 | https://en.wikipedia.org/wiki/Student%27s%20t-test | Student's t-test | Student's t-test is a statistical test used to test whether the difference between the response of two groups is statistically significant or not. It is any statistical hypothesis test in which the test statistic follows a Student's t-distribution under the null hypothesis. It is most commonly applied when the test sta... | Mathematics | Statistics and probability | null |
536158 | https://en.wikipedia.org/wiki/Opisthokont | Opisthokont | The opisthokonts () are a broad group of eukaryotes, including both the animal and fungus kingdoms. The opisthokonts, previously called the "Fungi/Metazoa group", are generally recognized as a clade. Opisthokonts together with Apusomonadida and Breviata comprise the larger clade Obazoa.
Flagella and other characterist... | Biology and health sciences | Eukaryotes | Plants |
536313 | https://en.wikipedia.org/wiki/Polycarbonate | Polycarbonate | Polycarbonates (PC) are a group of thermoplastic polymers containing carbonate groups in their chemical structures. Polycarbonates used in engineering are strong, tough materials, and some grades are optically transparent. They are easily worked, molded, and thermoformed. Because of these properties, polycarbonates fi... | Physical sciences | Polymers | Chemistry |
536314 | https://en.wikipedia.org/wiki/Cinnamaldehyde | Cinnamaldehyde | Cinnamaldehyde is an organic compound with the formula C9H8O or C₆H₅CH=CHCHO. Occurring naturally as predominantly the trans (E) isomer, it gives cinnamon its flavor and odor. It is a phenylpropanoid that is naturally synthesized by the shikimate pathway. This pale yellow, viscous liquid occurs in the bark of cinnamon ... | Physical sciences | Phenylpropanoids | Chemistry |
536505 | https://en.wikipedia.org/wiki/Rod%20%28unit%29 | Rod (unit) | The rod, perch, or pole (sometimes also lug) is a surveyor's tool and unit of length of various historical definitions. In British imperial and US customary units, it is defined as feet, equal to exactly of a mile, or yards (a quarter of a surveyor's chain), and is exactly 5.0292 meters. The rod is useful as a unit ... | Physical sciences | English | Basics and measurement |
536889 | https://en.wikipedia.org/wiki/Marmoset | Marmoset | The marmosets (), also known as zaris or sagoin, are twenty-two New World monkey species of the genera Callithrix, Cebuella, Callibella, and Mico. All four genera are part of the biological family Callitrichidae. The term "marmoset" is also used in reference to Goeldi's marmoset, Callimico goeldii, which is closely rel... | Biology and health sciences | New World monkeys | Animals |
537019 | https://en.wikipedia.org/wiki/Temperate%20rainforest | Temperate rainforest | Temperate rainforests are rainforests with coniferous or broadleaf forests that occur in the temperate zone and receive heavy rain.
Temperate rainforests occur in oceanic moist regions around the world: the Pacific temperate rainforests of North American Pacific Northwest as well as the Appalachian temperate rainfores... | Physical sciences | Forests | Earth science |
537048 | https://en.wikipedia.org/wiki/Equation%20solving | Equation solving | In mathematics, to solve an equation is to find its solutions, which are the values (numbers, functions, sets, etc.) that fulfill the condition stated by the equation, consisting generally of two expressions related by an equals sign. When seeking a solution, one or more variables are designated as unknowns. A solution... | Mathematics | Basics | null |
537218 | https://en.wikipedia.org/wiki/Gun%20dog | Gun dog | Gun dogs or bird dogs are types of hunting dogs developed to assist hunters in finding and retrieving game, typically various fowls that are shot down on the wing (in flight). The term hunting dog is broad and includes all breeds and skills of hunting canines, but "gun dogs" refers to canines that are trained to work a... | Biology and health sciences | Dogs | null |
20173627 | https://en.wikipedia.org/wiki/Alpine%20goat | Alpine goat | The Alpine is a medium to large sized breed of domestic goat known for its very good milking ability. They have no set colours or markings (although certain markings are discriminated against). They have horns, a straight profile and erect ears.
The breed originated in the French Alps. Mature goats weigh around 61 kg... | Biology and health sciences | Goats | Animals |
20180633 | https://en.wikipedia.org/wiki/Curtain%20wall%20%28fortification%29 | Curtain wall (fortification) | A curtain wall is a defensive wall between fortified towers or bastions of a castle, fortress, or town.
Ancient fortifications
Evidence for curtain walls or a series of walls surrounding a town or fortress can be found in the historical sources from Assyria and Egypt. Some notable examples are ancient Tel Lachish in... | Technology | Fortification | null |
27499693 | https://en.wikipedia.org/wiki/Partial%20permutation | Partial permutation | In combinatorial mathematics, a partial permutation, or sequence without repetition, on a finite set S
is a bijection between two specified subsets of S. That is, it is defined by two subsets U and V of equal size, and a one-to-one mapping from U to V. Equivalently, it is a partial function on S that can be extended to... | Mathematics | Combinatorics | null |
34335892 | https://en.wikipedia.org/wiki/Climate%20change%20in%20Africa | Climate change in Africa | Climate change in Africa is an increasingly serious threat as Africa is among the most vulnerable continents to the effects of climate change. Some sources even classify Africa as "the most vulnerable continent on Earth". Climate change and climate variability will likely reduce agricultural production, food security a... | Physical sciences | Climate change | Earth science |
5067669 | https://en.wikipedia.org/wiki/Potassium%20sulfide | Potassium sulfide | Potassium sulfide is an inorganic compound with the formula K2S. The colourless solid is rarely encountered, because it reacts readily with water, a reaction that affords potassium hydrosulfide (KSH) and potassium hydroxide (KOH). Most commonly, the term potassium sulfide refers loosely to this mixture, not the anhydr... | Physical sciences | Sulfide salts | Chemistry |
5068752 | https://en.wikipedia.org/wiki/Trigonotarbida | Trigonotarbida | The order Trigonotarbida is a group of extinct arachnids whose fossil record extends from the late Silurian to the early Permian (Pridoli to Sakmarian). These animals are known from several localities in Europe and North America, as well as a single record from Argentina. Trigonotarbids can be envisaged as spider-like ... | Biology and health sciences | Prehistoric arachnids | Animals |
5069414 | https://en.wikipedia.org/wiki/Genital%20herpes | Genital herpes | Genital herpes is a herpes infection of the genitals caused by the herpes simplex virus (HSV). Most people either have no or mild symptoms and thus do not know they are infected. When symptoms do occur, they typically include small blisters that break open to form painful ulcers. Flu-like symptoms, such as fever, achin... | Biology and health sciences | Viral diseases | Health |
5069516 | https://en.wikipedia.org/wiki/HIV/AIDS | HIV/AIDS | The human immunodeficiency virus (HIV) is a retrovirus that attacks the immune system. It is a preventable disease. It can be managed with treatment and become a manageable chronic health condition. While there is no cure or vaccine for HIV, antiretroviral treatment can slow the course of the disease and enable people ... | Biology and health sciences | Illness and injury | null |
5069898 | https://en.wikipedia.org/wiki/Dynamic%20demand%20%28electric%20power%29 | Dynamic demand (electric power) | Dynamic Demand is the name of a semi-passive technology to support demand response by adjusting the load demand on an electrical power grid. It is also the name of an independent not-for-profit organization in the UK supported by a charitable grant from the Esmée Fairbairn Foundation, dedicated to promoting this techno... | Technology | Electricity transmission and distribution | null |
5072278 | https://en.wikipedia.org/wiki/Molecular%20model | Molecular model | A molecular model is a physical model of an atomistic system that represents molecules and their processes. They play an important role in understanding chemistry and generating and testing hypotheses. The creation of mathematical models of molecular properties and behavior is referred to as molecular modeling, and the... | Physical sciences | Substance | Chemistry |
2003525 | https://en.wikipedia.org/wiki/Painite | Painite | Painite is a very rare borate mineral. It was first found in Myanmar by British mineralogist and gem dealer Arthur C.D. Pain who misidentified it as ruby, until it was discovered as a new gemstone in the 1950s. When it was confirmed as a new mineral species, the mineral was named after him.
The chemical makeup of pai... | Physical sciences | Minerals | Earth science |
3744388 | https://en.wikipedia.org/wiki/Ohmic%20contact | Ohmic contact | An ohmic contact is a non-rectifying electrical junction: a junction between two conductors that has a linear current–voltage (I–V) curve as with Ohm's law. Low-resistance ohmic contacts are used to allow charge to flow easily in both directions between the two conductors, without blocking due to rectification or exces... | Physical sciences | Electrical circuits | Physics |
25652303 | https://en.wikipedia.org/wiki/Computer%20architecture | Computer architecture | In computer science and computer engineering, computer architecture is a description of the structure of a computer system made from component parts. It can sometimes be a high-level description that ignores details of the implementation. At a more detailed level, the description may include the instruction set archite... | Technology | Computer science | null |
25658445 | https://en.wikipedia.org/wiki/Mass%20concentration%20%28chemistry%29 | Mass concentration (chemistry) | In chemistry, the mass concentration (or ) is defined as the mass of a constituent divided by the volume of the mixture .
For a pure chemical the mass concentration equals its density (mass divided by volume); thus the mass concentration of a component in a mixture can be called the density of a component in a mixtu... | Physical sciences | Mixture | Chemistry |
31352816 | https://en.wikipedia.org/wiki/Cobble%20%28geology%29 | Cobble (geology) | A cobble (sometimes a cobblestone) is a clast of rock defined on the Udden–Wentworth scale as having a particle size of , larger than a pebble and smaller than a boulder. Other scales define a cobble's size differently. A rock made predominantly of cobbles is termed a conglomerate. Cobblestone is a building material ba... | Physical sciences | Sedimentology | Earth science |
891641 | https://en.wikipedia.org/wiki/Mexico%20City%20Metro | Mexico City Metro | The Mexico City Metro () is a rapid transit system that serves the metropolitan area of Mexico City, including some municipalities in the State of Mexico. Operated by the Sistema de Transporte Colectivo (STC), it is the second largest metro system in North America after the New York City Subway.
The inaugural STC Metr... | Technology | Americas | null |
892484 | https://en.wikipedia.org/wiki/Anaerobic%20exercise | Anaerobic exercise | Anaerobic exercise is a type of exercise that breaks down glucose in the body without using oxygen; anaerobic means "without oxygen". This type of exercise leads to a buildup of lactic acid.
In practical terms, this means that anaerobic exercise is more intense, but shorter in duration than aerobic exercise.
The bioc... | Biology and health sciences | Physical fitness | Health |
892541 | https://en.wikipedia.org/wiki/Dicynodontia | Dicynodontia | Dicynodontia is an extinct clade of anomodonts, an extinct type of non-mammalian therapsid. Dicynodonts were herbivores that typically bore a pair of tusks, hence their name, which means 'two dog tooth'. Members of the group possessed a horny, typically toothless beak, unique amongst all synapsids. Dicynodonts first ap... | Biology and health sciences | Proto-mammals | Animals |
892554 | https://en.wikipedia.org/wiki/Placerias | Placerias | Placerias (meaning 'broad body') is an extinct genus of dicynodonts that lived during the Carnian to the Norian age of the Triassic Period (230–215 million years ago). Placerias belongs to a group of dicynodonts called Kannemeyeriiformes, which was the last known group of dicynodonts before the taxon became extinct at ... | Biology and health sciences | Proto-mammals | Animals |
892600 | https://en.wikipedia.org/wiki/Eurypterus | Eurypterus | Eurypterus ( ) is an extinct genus of eurypterid, a group of organisms commonly called "sea scorpions". The genus lived during the Silurian period, from around 432 to 418 million years ago. Eurypterus is by far the most well-studied and well-known eurypterid. Eurypterus fossil specimens probably represent more than 95%... | Biology and health sciences | Fossil arthropods | Animals |
893280 | https://en.wikipedia.org/wiki/Floriculture | Floriculture | Floriculture is the study of the efficient production of the plants that produce showy, colorful flowers and foliage for human enjoyment in human environments. It is a commercially successful branch of horticulture and agriculture found throughout the world. Efficient production practices have been developed over the y... | Technology | Horticulture | null |
893573 | https://en.wikipedia.org/wiki/Didelphodon | Didelphodon | Didelphodon (from [is] "opossum" tooth "tooth") is a genus of extinct metatherian mammal from the Late Cretaceous of North America.
Description
Although perhaps little larger than a Virginia opossum, with a skull length of and a weight of , the teeth have specialized bladelike cusps and carnassial notches, indicat... | Biology and health sciences | Marsupials | Animals |
893602 | https://en.wikipedia.org/wiki/Ambulocetus | Ambulocetus | Ambulocetus (Latin ambulare "to walk" + cetus "whale") is a genus of early amphibious cetacean from the Kuldana Formation in Pakistan, roughly 48 or 47 million years ago during the Early Eocene (Lutetian). It contains one species, Ambulocetus natans (Latin natans "swimming"), known solely from a near-complete skeleton.... | Biology and health sciences | Cetaceans | Animals |
894250 | https://en.wikipedia.org/wiki/Orthopedic%20cast | Orthopedic cast | Orthopedic casts or just casts are a form of medical treatment used to immobilize and support bones and soft tissues during the healing process after fractures, surgeries, or severe injuries. By restricting movement, casts provide stability to the affected area, enabling proper alignment and healing of bones, ligaments... | Technology | Devices | null |
2784391 | https://en.wikipedia.org/wiki/Cooksonia | Cooksonia | Cooksonia is an extinct group of primitive land plants, treated as a genus, although probably not monophyletic. The earliest Cooksonia date from the middle of the Silurian (the Wenlock epoch); the group continued to be an important component of the flora until the end of the Early Devonian, a total time span of . While... | Biology and health sciences | Pteridophytes | Plants |
2784496 | https://en.wikipedia.org/wiki/Polyyne | Polyyne | A polyyne is any organic compound with alternating single and triple bonds; that is, a series of consecutive alkynes, with n greater than 1. These compounds are also called polyacetylenes, especially in the natural products and chemical ecology literature, even though this nomenclature more properly refers to acetylen... | Physical sciences | Aliphatic hydrocarbons | Chemistry |
1364502 | https://en.wikipedia.org/wiki/Belt%20%28mechanical%29 | Belt (mechanical) | A belt is a loop of flexible material used to link two or more rotating shafts mechanically, most often parallel. Belts may be used as a source of motion, to transmit power efficiently or to track relative movement. Belts are looped over pulleys and may have a twist between the pulleys, and the shafts need not be paral... | Technology | Flexible components | null |
1364622 | https://en.wikipedia.org/wiki/Four-dimensional%20space | Four-dimensional space | Four-dimensional space (4D) is the mathematical extension of the concept of three-dimensional space (3D). Three-dimensional space is the simplest possible abstraction of the observation that one needs only three numbers, called dimensions, to describe the sizes or locations of objects in the everyday world. For example... | Mathematics | Four-dimensional space | null |
1365637 | https://en.wikipedia.org/wiki/Sports%20medicine | Sports medicine | Sports medicine is a branch of medicine that deals with physical fitness and the treatment and prevention of injuries related to sports and exercise. Although most sports teams have employed team physicians for many years, it is only since the late 20th century that sports medicine emerged as a distinct field of health... | Biology and health sciences | Fields of medicine | Health |
1367595 | https://en.wikipedia.org/wiki/Elemental%20analysis | Elemental analysis | Elemental analysis is a process where a sample of some material (e.g., soil, waste or drinking water, bodily fluids, minerals, chemical compounds) is analyzed for its elemental and sometimes isotopic composition. Elemental analysis can be qualitative (determining what elements are present), and it can be quantitative (... | Physical sciences | Basics_2 | Chemistry |
1367789 | https://en.wikipedia.org/wiki/Monitor%20%28synchronization%29 | Monitor (synchronization) | In concurrent programming, a monitor is a synchronization construct that prevents threads from concurrently accessing a shared object's state and allows them to wait for the state to change. They provide a mechanism for threads to temporarily give up exclusive access in order to wait for some condition to be met, befo... | Technology | Computer science | null |
1368466 | https://en.wikipedia.org/wiki/Bacterial%20capsule | Bacterial capsule | The bacterial capsule is a large structure common to many bacteria. It is a polysaccharide layer that lies outside the cell envelope, and is thus deemed part of the outer envelope of a bacterial cell. It is a well-organized layer, not easily washed off, and it can be the cause of various diseases.
The capsule—which ca... | Biology and health sciences | Basic anatomy | Biology |
1368943 | https://en.wikipedia.org/wiki/Mangla%20Dam | Mangla Dam | The Mangla Dam () is a multipurpose dam situated on the Jhelum River, lying in the Mirpur District of Azad Kashmir and the Jhelum District in Punjab, Pakistan. It is the sixth-largest dam in the world. The village of Mangla, which sits at the mouth of the dam, serves as its namesake. In November 1961, the project's sel... | Technology | Dams | null |
1369226 | https://en.wikipedia.org/wiki/Brix | Brix | Degrees Brix (symbol °Bx) is a measure of the dissolved solids in a liquid, and is commonly used to measure dissolved sugar content of a solution. One degree Brix is 1 gram of sucrose in 100 grams of solution and represents the strength of the solution as percentage by mass. If the solution contains dissolved solids ot... | Physical sciences | Concentration | Basics and measurement |
20191692 | https://en.wikipedia.org/wiki/Helium%20atom | Helium atom | A helium atom is an atom of the chemical element helium. Helium is composed of two electrons bound by the electromagnetic force to a nucleus containing two protons along with two neutrons, depending on the isotope, held together by the strong force. Unlike for hydrogen, a closed-form solution to the Schrödinger equatio... | Physical sciences | s-Block | Chemistry |
22726521 | https://en.wikipedia.org/wiki/Aquaculture%20of%20salmonids | Aquaculture of salmonids | The aquaculture of salmonids is the farming and harvesting of salmonid fish under controlled conditions for both commercial and recreational purposes. Salmonids (particularly salmon and rainbow trout), along with carp and tilapia, are the three most important fish groups in aquaculture. The most commonly commercially f... | Technology | Aquaculture | null |
21280496 | https://en.wikipedia.org/wiki/Visual%20perception | Visual perception | Visual perception is the ability to interpret the surrounding environment through photopic vision (daytime vision), color vision, scotopic vision (night vision), and mesopic vision (twilight vision), using light in the visible spectrum reflected by objects in the environment. This is different from visual acuity, which... | Biology and health sciences | Nervous system | null |
21280576 | https://en.wikipedia.org/wiki/Mechanism%20%28engineering%29 | Mechanism (engineering) | In engineering, a mechanism is a device that transforms input forces and movement into a desired set of output forces and movement. Mechanisms generally consist of moving components which may include Gears and gear trains; Belts and chain drives; cams and followers; Linkages; Friction devices, such as brakes or clutche... | Technology | Machinery and tools: General | null |
28802456 | https://en.wikipedia.org/wiki/Lunar%20rover | Lunar rover | A lunar rover or Moon rover is a space exploration vehicle designed to move across the surface of the Moon. The Apollo program's Lunar Roving Vehicle was driven on the Moon by members of three American crews, Apollo 15, 16, and 17. Other rovers have been partially or fully autonomous robots, such as the Soviet Union's ... | Technology | Rovers | null |
35541901 | https://en.wikipedia.org/wiki/Thin%20disk | Thin disk | The thin disk is a structural component of spiral and S0-type galaxies, composed of stars, gas and dust. It is the main non-centre (e.g. galactic bulge) density, of such matter. That of the Milky Way is thought to have a scale height of around in the vertical axis perpendicular to the disk, and a scale length of aroun... | Physical sciences | Basics_2 | Astronomy |
31367277 | https://en.wikipedia.org/wiki/Grain%20size | Grain size | Grain size (or particle size) is the diameter of individual grains of sediment, or the lithified particles in clastic rocks. The term may also be applied to other granular materials. This is different from the crystallite size, which refers to the size of a single crystal inside a particle or grain. A single grain can... | Physical sciences | Sedimentology | Earth science |
20203982 | https://en.wikipedia.org/wiki/Spinneret%20%28polymers%29 | Spinneret (polymers) | A spinneret is a device used to extrude a polymer solution or polymer melt to form fibers. Streams of viscous polymer exit via the spinneret into air or liquid leading to a phase inversion which allows the polymer to solidify. The individual polymer chains tend to align in the fiber because of viscous flow. This airstr... | Technology | Spinning | null |
32861742 | https://en.wikipedia.org/wiki/Health%20and%20usage%20monitoring%20systems | Health and usage monitoring systems | Health and usage monitoring systems (HUMS) is a generic term given to activities that utilize data collection and analysis techniques to help ensure availability, reliability and safety of vehicles. Activities similar to, or sometimes used interchangeably with, HUMS include condition-based maintenance (CBM) and operati... | Technology | Aircraft components | null |
2792729 | https://en.wikipedia.org/wiki/Crop%20yield | Crop yield | In agriculture, the yield is a measurement of the amount of a crop grown, or product such as wool, meat or milk produced, per unit area of land. The seed ratio is another way of calculating yields.
Innovations, such as the use of fertilizer, the creation of better farming tools, new methods of farming and improved cro... | Technology | Basics_3 | null |
2796131 | https://en.wikipedia.org/wiki/Introduction%20to%20quantum%20mechanics | Introduction to quantum mechanics | Quantum mechanics is the study of matter and its interactions with energy on the scale of atomic and subatomic particles. By contrast, classical physics explains matter and energy only on a scale familiar to human experience, including the behavior of astronomical bodies such as the moon. Classical physics is still use... | Physical sciences | Quantum mechanics | Physics |
2796768 | https://en.wikipedia.org/wiki/Rose%20%28color%29 | Rose (color) | Rose is the color halfway between red and magenta on the HSV color wheel, also known as the RGB color wheel, on which it is at hue angle of 330 degrees.
Rose is one of the tertiary colors on the HSV (RGB) color wheel. The complementary color of rose is spring green. Sometimes rose is quoted instead as the web-safe col... | Physical sciences | Colors | Physics |
3755359 | https://en.wikipedia.org/wiki/Confluence | Confluence | In geography, a confluence (also: conflux) occurs where two or more watercourses join to form a single channel. A confluence can occur in several configurations: at the point where a tributary joins a larger river (main stem); or where two streams meet to become the source of a river of a new name (such as the conflu... | Physical sciences | Hydrology | Earth science |
21281502 | https://en.wikipedia.org/wiki/Gun | Gun | A gun is a device designed to propel a projectile using pressure or explosive force. The projectiles are typically solid, but can also be pressurized liquid (e.g. in water guns/cannons), or gas (e.g. light-gas gun). Solid projectiles may be free-flying (as with bullets and artillery shells) or tethered (as with Tasers... | Technology | Projectile weapons | null |
21281976 | https://en.wikipedia.org/wiki/Somatosensory%20system | Somatosensory system | The somatosensory system, or somatic sensory system is a subset of the sensory nervous system. It has two subdivisions, one for the detection of mechanosensory information related to touch, and the other for the nociception detection of pain and temperature. The main functions of the somatosensory system are the perce... | Biology and health sciences | Nervous system | null |
21282020 | https://en.wikipedia.org/wiki/Hearing | Hearing | Hearing, or auditory perception, is the ability to perceive sounds through an organ, such as an ear, by detecting vibrations as periodic changes in the pressure of a surrounding medium. The academic field concerned with hearing is auditory science.
Sound may be heard through solid, liquid, or gaseous matter. It is one... | Biology and health sciences | Nervous system | null |
21282070 | https://en.wikipedia.org/wiki/Taste | Taste | The gustatory system or sense of taste is the sensory system that is partially responsible for the perception of taste. Taste is the perception stimulated when a substance in the mouth reacts chemically with taste receptor cells located on taste buds in the oral cavity, mostly on the tongue. Taste, along with the sense... | Biology and health sciences | Nervous system | null |
21290714 | https://en.wikipedia.org/wiki/Proprioception | Proprioception | Proprioception ( ) is the sense of self-movement, force, and body position.
Proprioception is mediated by proprioceptors, a type of sensory receptor, located within muscles, tendons, and joints. Most animals possess multiple subtypes of proprioceptors, which detect distinct kinesthetic parameters, such as joint positi... | Biology and health sciences | Sensory nervous system | Biology |
21291483 | https://en.wikipedia.org/wiki/Windows%20NT | Windows NT | Windows NT is a proprietary graphical operating system produced by Microsoft as part of its Windows product line, the first version of which, Windows NT 3.1, was released on July 27, 1993. Originally made for the workstation, office, and server markets, the Windows NT line was made available to consumers with the relea... | Technology | Operating Systems | null |
21291678 | https://en.wikipedia.org/wiki/Windows%203.1 | Windows 3.1 | Windows 3.1 is a major release of Microsoft Windows. It was released to manufacturing on April 6, 1992, as a successor to Windows 3.0. Like its predecessors, the Windows 3.1 series run as a shell on top of MS-DOS; it was the last Windows 16-bit operating environment as all future versions of Windows had moved to 32-bit... | Technology | Operating Systems | null |
21291954 | https://en.wikipedia.org/wiki/MS-DOS | MS-DOS | MS-DOS ( ; acronym for Microsoft Disk Operating System, also known as Microsoft DOS) is an operating system for x86-based personal computers mostly developed by Microsoft. Collectively, MS-DOS, its rebranding as IBM PC DOS, and a few operating systems attempting to be compatible with MS-DOS, are sometimes referred to a... | Technology | Operating systems | null |
2005663 | https://en.wikipedia.org/wiki/Digitaria | Digitaria | Digitaria is a genus of plants in the grass family native to tropical and warm temperate regions but can occur in tropical, subtropical, and cooler temperate regions as well. Common names include crabgrass, finger-grass, and fonio. They are slender monocotyledonous annual and perennial lawn, pasture, and forage plants;... | Biology and health sciences | Poales | Plants |
2007102 | https://en.wikipedia.org/wiki/Mesonychia | Mesonychia | Mesonychia ("middle claws") is an extinct taxon of small- to large-sized carnivorous ungulates related to artiodactyls. Mesonychians first appeared in the early Paleocene, went into a sharp decline at the end of the Eocene, and died out entirely when the last genus, Mongolestes, became extinct in the early Oligocene. I... | Biology and health sciences | Mammals: General | Animals |
2007779 | https://en.wikipedia.org/wiki/Water%20bottle | Water bottle | A water bottle is a container that is used to hold liquids, mainly water, for the purpose of transporting a drink while travelling or while otherwise away from a supply of potable water.
Water bottles are usually made of plastic, glass, metal, or some combination of those substances. In the past, water bottles were so... | Technology | Containers | null |
2008215 | https://en.wikipedia.org/wiki/Quark%20model | Quark model | In particle physics, the quark model is a classification scheme for hadrons in terms of their valence quarks—the quarks and antiquarks that give rise to the quantum numbers of the hadrons. The quark model underlies "flavor SU(3)", or the Eightfold Way, the successful classification scheme organizing the large number o... | Physical sciences | Particle physics: General | Physics |
2008686 | https://en.wikipedia.org/wiki/Poikilotherm | Poikilotherm | A poikilotherm () is an animal (Greek poikilos – 'various', 'spotted', and therme – 'heat') whose internal temperature varies considerably. Poikilotherms have to survive and adapt to environmental stress. One of the most important stressors is outer environment temperature change, which can lead to alterations in memb... | Biology and health sciences | Basics | Biology |
1370818 | https://en.wikipedia.org/wiki/Blackbuck | Blackbuck | The blackbuck (Antilope cervicapra), also known as the Indian antelope, is a medium-sized antelope native to India and Nepal. It inhabits grassy plains and lightly forested areas with perennial water sources.
It stands up to high at the shoulder. Males weigh , with an average of . Females are lighter, weighing or on... | Biology and health sciences | Bovidae | Animals |
1371050 | https://en.wikipedia.org/wiki/Medicalization | Medicalization | Medicalization is the process by which human conditions and problems come to be defined and treated as medical conditions, and thus become the subject of medical study, diagnosis, prevention, or treatment. Medicalization can be driven by new evidence or hypotheses about conditions; by changing social attitudes or econo... | Biology and health sciences | General concepts | Health |
1372353 | https://en.wikipedia.org/wiki/Hydraulic%20machinery | Hydraulic machinery | Hydraulic machines use liquid fluid power to perform work. Heavy construction vehicles are a common example. In this type of machine, hydraulic fluid is pumped to various hydraulic motors and hydraulic cylinders throughout the machine and becomes pressurized according to the resistance present. The fluid is controlled ... | Technology | Hydraulics and pneumatics | null |
1372941 | https://en.wikipedia.org/wiki/Shenzhen%20Metro | Shenzhen Metro | The Shenzhen Metro () is the rapid transit system for the city of Shenzhen in Guangdong province, China. The newest lines and extensions which opened on December 27, 2024 put the network at of trackage. It currently operates on 17 lines with 398 stations. Despite having only opened on December 28, 2004, the Shenzhen M... | Technology | China | null |
1374448 | https://en.wikipedia.org/wiki/Degree%20%28graph%20theory%29 | Degree (graph theory) | In graph theory, the degree (or valency) of a vertex of a graph is the number of edges that are incident to the vertex; in a multigraph, a loop contributes 2 to a vertex's degree, for the two ends of the edge. The degree of a vertex is denoted or . The maximum degree of a graph is denoted by , and is the maximum of ... | Mathematics | Graph theory | null |
34360942 | https://en.wikipedia.org/wiki/Graecopithecus | Graecopithecus | Graecopithecus is an extinct genus of hominid that lived in southeast Europe during the late Miocene around 7.2 million years ago. Originally identified by a single lower jawbone bearing teeth found in Pyrgos Vasilissis, Athens, Greece, in 1944, other teeth were discovered from Azmaka quarry in Bulgaria in 2012. With o... | Biology and health sciences | Australopithecines | Biology |
27533725 | https://en.wikipedia.org/wiki/Intergalactic%20star | Intergalactic star | An intergalactic star, also known as an intracluster star or a rogue star, is a star not gravitationally bound to any galaxy. Although a source of much discussion in the scientific community during the late 1990s, intergalactic stars are now generally thought to have originated in galaxies, like other stars, before bei... | Physical sciences | Stellar astronomy | Astronomy |
537264 | https://en.wikipedia.org/wiki/Fractional%20freezing | Fractional freezing | Fractional freezing is a process used in process engineering and chemistry to separate substances with different melting points. It can be done by partial melting of a solid, for example in zone refining of silicon or metals, or by partial crystallization of a liquid, as in freeze distillation, also called normal freez... | Physical sciences | Phase separations | Chemistry |
537442 | https://en.wikipedia.org/wiki/HDMI | HDMI | High-Definition Multimedia Interface (HDMI) is a proprietary audio/video interface for transmitting uncompressed video data and compressed or uncompressed digital audio data from a source device, such as a display controller, to a computer monitor, video projector, digital television, or digital audio device. HDMI is a... | Technology | User interface | null |
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