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224443 | https://en.wikipedia.org/wiki/Procellariidae | Procellariidae | The family Procellariidae is a group of seabirds that comprises the fulmarine petrels, the gadfly petrels, the diving petrels, the prions, and the shearwaters. This family is part of the bird order Procellariiformes (or tubenoses), which also includes the albatrosses and the storm petrels.
The procellariids are the mo... | Biology and health sciences | Procellariiformes | Animals |
224605 | https://en.wikipedia.org/wiki/Peramelemorphia | Peramelemorphia | The order Peramelemorphia includes the bandicoots and bilbies. All members of the order are endemic to Australia-New Guinea and most have the characteristic bandicoot shape: a plump, arch-backed body with a long, delicately tapering snout, very large upright ears, relatively long, thin legs, and a thin tail. Their siz... | Biology and health sciences | Marsupials | null |
224636 | https://en.wikipedia.org/wiki/Supersymmetry | Supersymmetry | Supersymmetry is a theoretical framework in physics that suggests the existence of a symmetry between particles with integer spin (bosons) and particles with half-integer spin (fermions). It proposes that for every known particle, there exists a partner particle with different spin properties. There have been multiple ... | Physical sciences | Particle physics: General | null |
224729 | https://en.wikipedia.org/wiki/Potassium%20oxide | Potassium oxide | Potassium oxide (KO) is an ionic compound of potassium and oxygen. It is a base. This pale yellow solid is the simplest oxide of potassium. It is a highly reactive compound that is rarely encountered. Some industrial materials, such as fertilizers and cements, are assayed assuming the percent composition that would be... | Physical sciences | Alkali oxide salts | Chemistry |
224785 | https://en.wikipedia.org/wiki/Strelitzia | Strelitzia | Strelitzia is a genus of five species of perennial plants, native to South Africa. It belongs to the plant family Strelitziaceae. A common name of the genus is bird of paradise flower/plant, because of a resemblance of its flowers to birds-of-paradise. In South Africa, it is commonly known as a crane flower.
Two of t... | Biology and health sciences | Zingiberales | Plants |
225127 | https://en.wikipedia.org/wiki/Proximity%20fuze | Proximity fuze | A proximity fuze (also VT fuze or "variable time fuze") is a fuze that detonates an explosive device automatically when it approaches within a certain distance of its target. Proximity fuzes are designed for elusive military targets such as aircraft and missiles, as well as ships at sea and ground forces. This sophisti... | Technology | Explosive weapons | null |
225170 | https://en.wikipedia.org/wiki/Gymnotiformes | Gymnotiformes | The Gymnotiformes are an order of teleost bony fishes commonly known as Neotropical knifefish or South American knifefish. They have long bodies and swim using undulations of their elongated anal fin. Found almost exclusively in fresh water (the only exceptions are species that occasionally may visit brackish water to... | Biology and health sciences | Gymnotiformes | Animals |
225256 | https://en.wikipedia.org/wiki/Silicon%20carbide | Silicon carbide | Silicon carbide (SiC), also known as carborundum (), is a hard chemical compound containing silicon and carbon. A wide bandgap semiconductor, it occurs in nature as the extremely rare mineral moissanite, but has been mass-produced as a powder and crystal since 1893 for use as an abrasive. Grains of silicon carbide can ... | Physical sciences | Ceramic compounds | Chemistry |
225574 | https://en.wikipedia.org/wiki/Swordfish | Swordfish | The swordfish (Xiphias gladius), also known as the broadbill in some countries, are large, highly migratory predatory fish characterized by a long, flat, pointed bill. They are a popular sport fish of the billfish category, though elusive. Swordfish are elongated, round-bodied, and lose all teeth and scales by adulthoo... | Biology and health sciences | Acanthomorpha | null |
225606 | https://en.wikipedia.org/wiki/Thomisidae | Thomisidae | The Thomisidae are a family of spiders, including about 170 genera and over 2,100 species. The common name crab spider is often linked to species in this family, but is also applied loosely to many other families of spiders. Many members of this family are also known as flower spiders or flower crab spiders.
Descripti... | Biology and health sciences | Spiders | Animals |
225617 | https://en.wikipedia.org/wiki/Third%20law%20of%20thermodynamics | Third law of thermodynamics | The third law of thermodynamics states that the entropy of a closed system at thermodynamic equilibrium approaches a constant value when its temperature approaches absolute zero. This constant value cannot depend on any other parameters characterizing the system, such as pressure or applied magnetic field. At absolute ... | Physical sciences | Thermodynamics | Physics |
19218592 | https://en.wikipedia.org/wiki/Sodium%20metaborate | Sodium metaborate | Sodium metaborate is a chemical compound of sodium, boron, and oxygen with formula . However, the metaborate ion is trimeric in the anhydrous solid, therefore a more correct formula is or . The formula can be written also as to highlight the relation to the main oxides of sodium and boron. The name is also applied to... | Physical sciences | Boric oxyanions | Chemistry |
19230414 | https://en.wikipedia.org/wiki/Taraxacum | Taraxacum | Taraxacum () is a large genus of flowering plants in the family Asteraceae, which consists of species commonly known as dandelions. The scientific and hobby study of the genus is known as taraxacology. The genus is native to Eurasia but the two most commonplace species worldwide, T. officinale (the common dandelion) an... | Biology and health sciences | Asterales | null |
2449741 | https://en.wikipedia.org/wiki/Lightning%20strike | Lightning strike | A lightning strike or lightning bolt is a lightning event in which an electric discharge takes place between the atmosphere and the ground. Most originate in a cumulonimbus cloud and terminate on the ground, called cloud-to-ground (CG) lightning. A less common type of strike, ground-to-cloud (GC) lightning, is upward-p... | Physical sciences | Storms | Earth science |
2452325 | https://en.wikipedia.org/wiki/Fine-art%20photography | Fine-art photography | Fine-art photography is photography created in line with the vision of the photographer as artist, using photography as a medium for creative expression. The goal of fine-art photography is to express an idea, a message, or an emotion. This stands in contrast to representational photography, such as photojournalism, wh... | Technology | Optical instruments | null |
2453519 | https://en.wikipedia.org/wiki/Headstander | Headstander | A headstander is any of several species of South American fish, including Anostomus ternetzi, Anostomus anostomus (family Anostomidae) and members of genus Chilodus from the family Chilodontidae. The name derives from their habit of swimming at a 45° angle, head pointed downwards, as if "standing on their heads".
Abo... | Biology and health sciences | Characiformes | Animals |
2454447 | https://en.wikipedia.org/wiki/Fata%20Morgana%20%28mirage%29 | Fata Morgana (mirage) | A () is a complex form of superior mirage visible in a narrow band right above the horizon. The term Fata Morgana is the Italian translation of "Morgan the Fairy" (Morgan le Fay of Arthurian legend). These mirages are often seen in the Italian Strait of Messina, and were described as fairy castles in the air or false ... | Physical sciences | Atmospheric optics | Earth science |
1769573 | https://en.wikipedia.org/wiki/Dark%20galaxy | Dark galaxy | A dark galaxy is a hypothesized galaxy with no (or very few) stars. They received their name because they have no visible stars but may be detectable if they contain significant amounts of gas. Astronomers have long theorized the existence of dark galaxies, but there are no confirmed examples to date. Dark galaxies are... | Physical sciences | Galaxy classification | Astronomy |
1771156 | https://en.wikipedia.org/wiki/Container%20format | Container format | A container format (informally, sometimes called a wrapper) or metafile is a file format that allows multiple data streams to be embedded into a single file, usually along with metadata for identifying and further detailing those streams. Notable examples of container formats include archive files (such as the ZIP for... | Technology | File formats | null |
1771169 | https://en.wikipedia.org/wiki/Citronellal | Citronellal | Citronellal or rhodinal (C10H18O) is a monoterpenoid aldehyde, the main component in the mixture of terpenoid chemical compounds that give citronella oil its distinctive lemon scent.
Citronellal is a main isolate in distilled oils from the plants Cymbopogon (excepting C. citratus, culinary lemongrass), lemon-scented g... | Physical sciences | Terpenes and terpenoids | Chemistry |
1771297 | https://en.wikipedia.org/wiki/Citral | Citral | Citral is an acyclic monoterpene aldehyde. Being a monoterpene, it is made of two isoprene units. Citral is a collective term which covers two geometric isomers that have their own separate names; the E-isomer is named geranial (trans-citral; α-citral) or citral A. The Z-isomer is named neral (cis-citral; β-citral) or ... | Physical sciences | Terpenes and terpenoids | Chemistry |
18207739 | https://en.wikipedia.org/wiki/Anoplotherium | Anoplotherium | Anoplotherium is the type genus of the extinct Palaeogene artiodactyl family Anoplotheriidae, which was endemic to Western Europe. It lived from the Late Eocene to the earliest Oligocene. It was the fifth fossil mammal genus to be described with official taxonomic authority, with a history extending back to 1804 when i... | Biology and health sciences | Other artiodactyla | Animals |
18209401 | https://en.wikipedia.org/wiki/Aurelia%20%28cnidarian%29 | Aurelia (cnidarian) | Aurelia is a genus of jellyfish that are commonly called moon jellies, which are in the class Scyphozoa. There are currently 25 accepted species and many that are still not formally described.
The genus was first described in 1816 by Jean-Baptiste Lamarck in his book Histoire Naturelle des Animaux sans Vertèbres (Natu... | Biology and health sciences | Cnidarians | Animals |
5985207 | https://en.wikipedia.org/wiki/Expansion%20of%20the%20universe | Expansion of the universe | The expansion of the universe is the increase in distance between gravitationally unbound parts of the observable universe with time. It is an intrinsic expansion, so it does not mean that the universe expands "into" anything or that space exists "outside" it. To any observer in the universe, it appears that all but th... | Physical sciences | Physical cosmology | Astronomy |
5985739 | https://en.wikipedia.org/wiki/Carrot | Carrot | The carrot (Daucus carota subsp. sativus) is a root vegetable, typically orange in colour, though heirloom variants including purple, black, red, white, and yellow cultivars exist, all of which are domesticated forms of the wild carrot, Daucus carota, native to Europe and Southwestern Asia. The plant probably originate... | Biology and health sciences | Apiales | null |
5988148 | https://en.wikipedia.org/wiki/Reproductive%20medicine | Reproductive medicine | Reproductive medicine is a branch of medicine concerning the male and female reproductive systems. It encompasses a variety of reproductive conditions, their prevention and assessment, as well as their subsequent treatment and prognosis.
Reproductive medicine has allowed the development of artificial reproductive tech... | Biology and health sciences | Fields of medicine | Health |
5989592 | https://en.wikipedia.org/wiki/Maximum%20cardinality%20matching | Maximum cardinality matching | Maximum cardinality matching is a fundamental problem in graph theory.
We are given a graph , and the goal is to find a matching containing as many edges as possible; that is, a maximum cardinality subset of the edges such that each vertex is adjacent to at most one edge of the subset. As each edge will cover exactly t... | Mathematics | Graph theory | null |
1162141 | https://en.wikipedia.org/wiki/Facies | Facies | In geology, a facies ( , ; same pronunciation and spelling in the plural) is a body of rock with distinctive characteristics. The characteristics can be any observable attribute of rocks (such as their overall appearance, composition, or condition of formation) and the changes that may occur in those attributes over a... | Physical sciences | Stratigraphy | Earth science |
1162170 | https://en.wikipedia.org/wiki/Stratigraphic%20unit | Stratigraphic unit | A stratigraphic unit is a volume of rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrographic, lithologic or paleontologic features (facies) that characterize it.
Units must be mappable and distinct from one another, but the contact ... | Physical sciences | Stratigraphy | Earth science |
1162226 | https://en.wikipedia.org/wiki/Potts%20model | Potts model | In statistical mechanics, the Potts model, a generalization of the Ising model, is a model of interacting spins on a crystalline lattice. By studying the Potts model, one may gain insight into the behaviour of ferromagnets and certain other phenomena of solid-state physics. The strength of the Potts model is not so mu... | Physical sciences | Magnetostatics | Physics |
1162781 | https://en.wikipedia.org/wiki/Chemical%20reactor | Chemical reactor | A chemical reactor is an enclosed volume in which a chemical reaction takes place. In chemical engineering, it is generally understood to be a process vessel used to carry out a chemical reaction, which is one of the classic unit operations in chemical process analysis. The design of a chemical reactor deals with multi... | Physical sciences | Chemical engineering | Chemistry |
1162949 | https://en.wikipedia.org/wiki/Pedetes | Pedetes | Pedetes is a genus of rodent, the springhares, in the family Pedetidae. Members of the genus are distributed across southern and Eastern Africa.
Species
A number of species both extant and extinct are classified in the genus Pedetes. They include:
South African springhare or springhaas (Pedetes capensis)
East Africa... | Biology and health sciences | Rodents | Animals |
1163049 | https://en.wikipedia.org/wiki/Lumen%20%28unit%29 | Lumen (unit) | The lumen (symbol: lm) is the unit of luminous flux, a measure of the perceived power of visible light emitted by a source, in the International System of Units (SI). Luminous flux differs from power (radiant flux), which encompasses all electromagnetic waves emitted, including non-visible ones such as thermal radiatio... | Physical sciences | Light | null |
1163775 | https://en.wikipedia.org/wiki/Black%20ghost%20knifefish | Black ghost knifefish | The black ghost knifefish (Apteronotus albifrons) is a tropical fish belonging to the ghost knifefish family (Apteronotidae). They originate in freshwater habitats in South America where they range from Venezuela to the Paraguay–Paraná River, including the Amazon Basin. They are popular in aquaria. The fish is all blac... | Biology and health sciences | Gymnotiformes | Animals |
1164051 | https://en.wikipedia.org/wiki/Capra%20%28genus%29 | Capra (genus) | Capra is a genus of mammals, the goats, comprising ten species, including the markhor and several species known as ibexes. The domestic goat (Capra hircus) is a domesticated species derived from the bezoar ibex (Capra aegagrus aegagrus). It is one of the oldest domesticated species of animal—according to archaeological... | Biology and health sciences | Artiodactyla | null |
1164226 | https://en.wikipedia.org/wiki/Markhor | Markhor | The markhor (Capra falconeri) is a large wild Capra (goat) species native to South Asia and Central Asia, mainly within Pakistan, the Karakoram range, parts of Afghanistan, and the Himalayas. It is listed on the IUCN Red List as Near Threatened since 2015.
The markhor is the national animal of Pakistan, where it is a... | Biology and health sciences | Bovidae | Animals |
1164286 | https://en.wikipedia.org/wiki/Sea%20lettuce | Sea lettuce | The sea lettuces comprise the genus Ulva, a group of edible green algae that is widely distributed along the coasts of the world's oceans. The type species within the genus Ulva is Ulva lactuca, lactuca being Latin for "lettuce". The genus also includes the species previously classified under the genus Enteromorpha, th... | Biology and health sciences | Green algae | Plants |
1164446 | https://en.wikipedia.org/wiki/African%20sacred%20ibis | African sacred ibis | {{Speciesbox
|name=African sacred ibis
|status=LC
|status_system=IUCN3.1
|status_ref=
|image=Sacred ibis (Threskiornis aethiopicus).jpg
|image_caption=in Ethiopia
|taxon=Threskiornis aethiopicus
|authority=(Latham, 1790)
|synonyms=Tantalus aethiopicus Latham, 1790
|range_map=ThreskiornisAethiopicusIUCNver2024.png
|rang... | Biology and health sciences | Pelecanimorphae | Animals |
1164768 | https://en.wikipedia.org/wiki/Loam | Loam | Loam (in geology and soil science) is soil composed mostly of sand (particle size > ), silt (particle size > ), and a smaller amount of clay (particle size < ). By weight, its mineral composition is about 40–40–20% concentration of sand–silt–clay, respectively. These proportions can vary to a degree, however, and resul... | Physical sciences | Sedimentology | Earth science |
1165029 | https://en.wikipedia.org/wiki/Collimator | Collimator | A collimator is a device which narrows a beam of particles or waves. To narrow can mean either to cause the directions of motion to become more aligned in a specific direction (i.e., make collimated light or parallel rays), or to cause the spatial cross section of the beam to become smaller (beam limiting device).
His... | Technology | Optical components | null |
1166049 | https://en.wikipedia.org/wiki/Quenching | Quenching | In materials science, quenching is the rapid cooling of a workpiece in water, gas, oil, polymer, air, or other fluids to obtain certain material properties. A type of heat treating, quenching prevents undesired low-temperature processes, such as phase transformations, from occurring. It does this by reducing the window... | Technology | Metallurgy | null |
11588774 | https://en.wikipedia.org/wiki/Coal-fired%20power%20station | Coal-fired power station | A coal-fired power station or coal power plant is a thermal power station which burns coal to generate electricity. Worldwide there are about 2,500 coal-fired power stations, on average capable of generating a gigawatt each. They generate about a third of the world's electricity, but cause many illnesses and the most e... | Technology | Power generation | null |
95913 | https://en.wikipedia.org/wiki/Coltan | Coltan | Coltan (short for columbite–tantalites and known industrially as tantalite) is a dull black metallic ore from which the elements niobium and tantalum are extracted. The niobium-dominant mineral in coltan is columbite (after niobium's original American name columbium), and the tantalum-dominant mineral is tantalite.
Ta... | Physical sciences | Minerals | Earth science |
96049 | https://en.wikipedia.org/wiki/Alcohol%20proof | Alcohol proof | Alcohol proof (usually termed simply "proof" in relation to a beverage) is a measure of the content of ethanol (alcohol) in an alcoholic beverage. The term was originally used in England and from 1816 was equal to about 1.75 times the percentage of alcohol by volume (ABV). The United Kingdom today uses ABV instead of p... | Physical sciences | Other_2 | Basics and measurement |
96558 | https://en.wikipedia.org/wiki/Maxwell%27s%20demon | Maxwell's demon | Maxwell's demon is a thought experiment that appears to disprove the second law of thermodynamics. It was proposed by the physicist James Clerk Maxwell in 1867. In his first letter, Maxwell referred to the entity as a "finite being" or a "being who can play a game of skill with the molecules". Lord Kelvin would later c... | Physical sciences | Statistical mechanics | Physics |
96590 | https://en.wikipedia.org/wiki/Ammonium%20nitrate | Ammonium nitrate | Ammonium nitrate is a chemical compound with the formula . It is a white crystalline salt consisting of ions of ammonium and nitrate. It is highly soluble in water and hygroscopic as a solid, although it does not form hydrates. It is predominantly used in agriculture as a high-nitrogen fertilizer.
Its other major use ... | Physical sciences | Salts | null |
96628 | https://en.wikipedia.org/wiki/Offspring | Offspring | In biology, offspring are the young creation of living organisms, produced either by sexual or asexual reproduction. Collective offspring may be known as a brood or progeny. This can refer to a set of simultaneous offspring, such as the chicks hatched from one clutch of eggs, or to all offspring produced over time, as ... | Biology and health sciences | Biological reproduction | Biology |
96652 | https://en.wikipedia.org/wiki/Seahorse | Seahorse | A seahorse (also written sea-horse and sea horse) is any of 46 species of small marine bony fish in the genus Hippocampus. The genus name comes from the Ancient Greek (), itself from () meaning "horse" and () meaning "sea monster" or "sea animal". Having a head and neck suggestive of a horse, seahorses also feature ... | Biology and health sciences | Acanthomorpha | null |
97025 | https://en.wikipedia.org/wiki/Direct3D | Direct3D | Direct3D is a graphics application programming interface (API) for Microsoft Windows. Part of DirectX, Direct3D is used to render three-dimensional graphics in applications where performance is important, such as games. Direct3D uses hardware acceleration if available on the graphics card, allowing for hardware acceler... | Technology | Software development: General | null |
97026 | https://en.wikipedia.org/wiki/Breadth-first%20search | Breadth-first search | Breadth-first search (BFS) is an algorithm for searching a tree data structure for a node that satisfies a given property. It starts at the tree root and explores all nodes at the present depth prior to moving on to the nodes at the next depth level. Extra memory, usually a queue, is needed to keep track of the child n... | Mathematics | Algorithms | null |
97034 | https://en.wikipedia.org/wiki/Depth-first%20search | Depth-first search | Depth-first search (DFS) is an algorithm for traversing or searching tree or graph data structures. The algorithm starts at the root node (selecting some arbitrary node as the root node in the case of a graph) and explores as far as possible along each branch before backtracking. Extra memory, usually a stack, is neede... | Mathematics | Algorithms | null |
97114 | https://en.wikipedia.org/wiki/Heterotroph | Heterotroph | A heterotroph (; ) is an organism that cannot produce its own food, instead taking nutrition from other sources of organic carbon, mainly plant or animal matter. In the food chain, heterotrophs are primary, secondary and tertiary consumers, but not producers. Living organisms that are heterotrophic include all animals... | Biology and health sciences | Ecology | Biology |
97169 | https://en.wikipedia.org/wiki/Port | Port | A port is a maritime facility comprising one or more wharves or loading areas, where ships load and discharge cargo and passengers. Although usually situated on a sea coast or estuary, ports can also be found far inland, such as Hamburg, Manchester and Duluth; these access the sea via rivers or canals. Because of their... | Technology | Coastal infrastructure | null |
97218 | https://en.wikipedia.org/wiki/John%20F.%20Kennedy%20International%20Airport | John F. Kennedy International Airport | John F. Kennedy International Airport is a major international airport serving New York City and its metropolitan area. JFK Airport is located on the southwestern shore of Long Island, in Queens, New York City, bordering Jamaica Bay. It is the busiest of the seven airports in the New York airport system, the sixth-bus... | Technology | North America | null |
97313 | https://en.wikipedia.org/wiki/Jacobi%20symbol | Jacobi symbol | Jacobi symbol for various k (along top) and n (along left side). Only are shown, since due to rule (2) below any other k can be reduced modulo n. Quadratic residues are highlighted in yellow — note that no entry with a Jacobi symbol of −1 is a quadratic residue, and if k is a quadratic residue modulo a coprime n, the... | Mathematics | Modular arithmetic | null |
97340 | https://en.wikipedia.org/wiki/Nautilus | Nautilus | Nautilus (, ) are the ancient pelagic marine mollusc species of the cephalopod family Nautilidae. This is the sole extant family of the superfamily Nautilaceae and the suborder Nautilina.
It comprises nine living species in two genera, the type of which is the genus Nautilus. Though it more specifically refers to the ... | Biology and health sciences | Cephalopods | Animals |
97528 | https://en.wikipedia.org/wiki/Isoprene | Isoprene | Isoprene, or 2-methyl-1,3-butadiene, is a common volatile organic compound with the formula CH2=C(CH3)−CH=CH2. In its pure form it is a colorless volatile liquid. It is produced by many plants and animals (including humans) and its polymers are the main component of natural rubber.
History and etymology
C. G. William... | Physical sciences | Terpenes and terpenoids | Chemistry |
17000875 | https://en.wikipedia.org/wiki/Grinding%20%28abrasive%20cutting%29 | Grinding (abrasive cutting) | Grinding is a type of abrasive machining process which uses a grinding wheel as cutting tool.
A wide variety of machines are used for grinding, best classified as portable or stationary:
Portable power tools such as angle grinders, die grinders and cut-off saws
Stationary power tools such as bench grinders and cut-... | Technology | Metallurgy | null |
17001425 | https://en.wikipedia.org/wiki/Minor%20planet | Minor planet | According to the International Astronomical Union (IAU), a minor planet is an astronomical object in direct orbit around the Sun that is exclusively classified as neither a planet nor a comet. Before 2006, the IAU officially used the term minor planet, but that year's meeting reclassified minor planets and comets into ... | Physical sciences | Planetary science | null |
3361149 | https://en.wikipedia.org/wiki/Ophthalmosaurus | Ophthalmosaurus | Ophthalmosaurus (Greek ὀφθάλμος ophthalmos 'eye' and σαῦρος sauros 'lizard') is a genus of ichthyosaur known from the Middle-Late Jurassic. Possible remains from the earliest Cretaceous, around 145 million years ago, are also known. It was a relatively medium-sized ichthyosaur, measuring long and weighing . Named for ... | Biology and health sciences | Prehistoric marine reptiles | Animals |
3364761 | https://en.wikipedia.org/wiki/Ray%20%28optics%29 | Ray (optics) | In optics, a ray is an idealized geometrical model of light or other electromagnetic radiation, obtained by choosing a curve that is perpendicular to the wavefronts of the actual light, and that points in the direction of energy flow. Rays are used to model the propagation of light through an optical system, by dividi... | Physical sciences | Optics | Physics |
716631 | https://en.wikipedia.org/wiki/Melanoma | Melanoma | Melanoma is the most dangerous type of skin cancer; it develops from the melanin-producing cells known as melanocytes. It typically occurs in the skin, but may rarely occur in the mouth, intestines, or eye (uveal melanoma).
In women, melanomas most commonly occur on the legs; while in men, on the back. Melanoma is fr... | Biology and health sciences | Cancer | null |
716765 | https://en.wikipedia.org/wiki/Wild%20rice | Wild rice | Wild rice, also called manoomin, mnomen, psíŋ, Canada rice, Indian rice, or water oats, is any of four species of grasses that form the genus Zizania, and the grain that can be harvested from them. The grain was historically and is still gathered and eaten in North America and, to a lesser extent, China, where the plan... | Biology and health sciences | Grains | Plants |
717849 | https://en.wikipedia.org/wiki/Spoiler%20%28aeronautics%29 | Spoiler (aeronautics) | In aeronautics, a spoiler (sometimes called a lift spoiler or lift dumper) is a device which intentionally reduces the lift component of an airfoil in a controlled way. Most often, spoilers are plates on the top surface of a wing that can be extended upward into the airflow to spoil the streamline flow. By so doing, ... | Technology | Aircraft components | null |
718081 | https://en.wikipedia.org/wiki/Off-road%20vehicle | Off-road vehicle | An off-road vehicle (ORV) also referred to as an off-highway vehicle (OHV), overland vehicle, or adventure vehicle, is any vehicle designed to drive on non-paved roads and surfaces, such as trails and forest roads, that have rough, uneven, and low-traction surfaces. Off-road vehicles have been popularized through compe... | Technology | Motorized road transport | null |
718855 | https://en.wikipedia.org/wiki/Self-organized%20criticality | Self-organized criticality | Self-organized criticality (SOC) is a property of dynamical systems that have a critical point as an attractor. Their macroscopic behavior thus displays the spatial or temporal scale-invariance characteristic of the critical point of a phase transition, but without the need to tune control parameters to a precise valu... | Physical sciences | Phase transitions | Physics |
719187 | https://en.wikipedia.org/wiki/Abies%20nordmanniana | Abies nordmanniana | Abies nordmanniana, the Nordmann fir or Caucasian fir, is a fir indigenous to the mountains south and east of the Black Sea, in Turkey, Georgia and the Russian Caucasus. It occurs at altitudes of 900–2,200 m on mountains with precipitation of over 1,000 mm.
The current distribution of the Nordmann fir is associated wi... | Biology and health sciences | Pinaceae | Plants |
719534 | https://en.wikipedia.org/wiki/Biological%20carbon%20fixation | Biological carbon fixation | Biological carbon fixation, or сarbon assimilation, is the process by which living organisms convert inorganic carbon (particularly carbon dioxide, ) to organic compounds. These organic compounds are then used to store energy and as structures for other biomolecules. Carbon is primarily fixed through photosynthesis, bu... | Biology and health sciences | Metabolic processes | Biology |
720240 | https://en.wikipedia.org/wiki/Potassium%20bitartrate | Potassium bitartrate | Potassium bitartrate, also known as potassium hydrogen tartrate, with formula KC4H5O6, is a chemical compound with a number of uses. It is the potassium acid salt of tartaric acid (a carboxylic acid). Especially in cooking, it is also known as cream of tartar.
It is used as a component of baking powders and baking mix... | Physical sciences | Organic salts | Chemistry |
720452 | https://en.wikipedia.org/wiki/Deadbolt | Deadbolt | A deadbolt or deadlock is a type of lock morticed into a wooden door where a bolt is thrown into the door frame, using a key from either side, to secure the door. It is distinct from a spring bolt lock because a deadbolt can only be opened by a key or handle. The more common spring bolt lock uses a spring to hold the ... | Technology | Mechanisms | null |
720752 | https://en.wikipedia.org/wiki/Meganeura | Meganeura | Meganeura is a genus of extinct insects from the Late Carboniferous (approximately 300 million years ago). It is a member of the extinct order Meganisoptera, which are closely related to and resemble dragonflies and damselflies (with dragonflies, damselflies and meganisopterans being part of the broader group Odonatopt... | Biology and health sciences | Fossil arthropods | Animals |
19232035 | https://en.wikipedia.org/wiki/Gazelle | Gazelle | A gazelle is one of many antelope species in the genus Gazella . There are also seven species included in two further genera; Eudorcas and Nanger, which were formerly considered subgenera of Gazella. A third former subgenus, Procapra, includes three living species of Asian gazelles.
Gazelles are known as swift animals... | Biology and health sciences | Artiodactyla | null |
18214141 | https://en.wikipedia.org/wiki/Western%20honey%20bee | Western honey bee | The western honey bee or European honey bee (Apis mellifera) is the most common of the 7–12 species of honey bees worldwide. The genus name Apis is Latin for 'bee', and mellifera is the Latin for 'honey-bearing' or 'honey-carrying', referring to the species' production of honey.
Like all honey bee species, the western... | Biology and health sciences | Hymenoptera | null |
18223985 | https://en.wikipedia.org/wiki/Spiral%20separator | Spiral separator | The term spiral separator can refer to either a device for separating slurry components by density (wet spiral separators), or for a device for sorting particles by shape (dry spiral separators).
Wet spiral separators
Spiral separators of the wet type, also called spiral concentrators, are devices to separate solid co... | Technology | Metallurgy | null |
4548056 | https://en.wikipedia.org/wiki/Pleurotus | Pleurotus | Pleurotus is a genus of gilled mushrooms which includes one of the most widely eaten mushrooms, P. ostreatus. Species of Pleurotus may be called oyster, abalone, or tree mushrooms, and are some of the most commonly cultivated edible mushrooms in the world. Pleurotus fungi have also been used in mycoremediation of pol... | Biology and health sciences | Edible fungi | Plants |
4548379 | https://en.wikipedia.org/wiki/Atmosphere%20of%20Mars | Atmosphere of Mars | The atmosphere of Mars is the layer of gases surrounding Mars. It is primarily composed of carbon dioxide (95%), molecular nitrogen (2.85%), and argon (2%). It also contains trace levels of water vapor, oxygen, carbon monoxide, hydrogen, and noble gases. The atmosphere of Mars is much thinner and colder than Earth's ha... | Physical sciences | Solar System | Astronomy |
4548438 | https://en.wikipedia.org/wiki/Incisivosaurus | Incisivosaurus | Incisivosaurus ("incisor lizard") is a genus of small, probably herbivorous theropod dinosaurs from the early Cretaceous Period of what is now the People's Republic of China. The first specimen to be described (by Xu et al. in 2002), IVPP V13326, is a skull that was collected from the lowermost levels (the fluvial Luji... | Biology and health sciences | Theropods | Animals |
7876894 | https://en.wikipedia.org/wiki/Nairobi%20fly | Nairobi fly | Nairobi fly is the common name for two species of rove beetle in the genus Paederus, native to East Africa originating from Tanzania. The beetles contain a corrosive substance known as pederin, which can cause chemical burns if it comes into contact with skin. Because of these burns, the Nairobi fly is sometimes referr... | Biology and health sciences | Beetles (Coleoptera) | Animals |
7878457 | https://en.wikipedia.org/wiki/Computer | Computer | A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations (computation). Modern digital electronic computers can perform generic sets of operations known as programs. These programs enable computers to perform a wide range of tasks. The term computer system ... | Technology | Technology | null |
11603215 | https://en.wikipedia.org/wiki/Geological%20history%20of%20Earth | Geological history of Earth | The geological history of the Earth follows the major geological events in Earth's past based on the geological time scale, a system of chronological measurement based on the study of the planet's rock layers (stratigraphy). Earth formed about 4.54 billion years ago by accretion from the solar nebula, a disk-shaped mas... | Physical sciences | Geological history | null |
5994167 | https://en.wikipedia.org/wiki/Carnot%20cycle | Carnot cycle | A Carnot cycle is an ideal thermodynamic cycle proposed by French physicist Sadi Carnot in 1824 and expanded upon by others in the 1830s and 1840s. By Carnot's theorem, it provides an upper limit on the efficiency of any classical thermodynamic engine during the conversion of heat into work, or conversely, the efficien... | Physical sciences | Thermodynamics | Physics |
5994488 | https://en.wikipedia.org/wiki/Legless%20lizard | Legless lizard | Legless lizard may refer to any of several groups of lizards that have independently lost limbs or reduced them to the point of being of no use in locomotion. It is the common name for the family Pygopodidae. These lizards are often distinguishable from snakes on the basis of one or more of the following characteristic... | Biology and health sciences | Lizards and other Squamata | Animals |
5998674 | https://en.wikipedia.org/wiki/Hyposmia | Hyposmia | Hyposmia, or microsmia, is a reduced ability to smell and to detect odors. A related condition is anosmia, in which no odors can be detected. Some of the causes of olfaction problems are allergies, nasal polyps, viral infections and head trauma. In 2012 an estimated 9.8 million people aged 40 and older in the United St... | Biology and health sciences | Symptoms and signs | Health |
17016531 | https://en.wikipedia.org/wiki/Hagen%E2%80%93Poiseuille%20equation | Hagen–Poiseuille equation | In non ideal fluid dynamics, the Hagen–Poiseuille equation, also known as the Hagen–Poiseuille law, Poiseuille law or Poiseuille equation, is a physical law that gives the pressure drop in an incompressible and Newtonian fluid in laminar flow flowing through a long cylindrical pipe of constant cross section.
It can be... | Physical sciences | Fluid mechanics | Physics |
1771587 | https://en.wikipedia.org/wiki/Pregnancy | Pregnancy | Pregnancy is the time during which one or more offspring develops (gestates) inside a woman's uterus (womb). A multiple pregnancy involves more than one offspring, such as with twins.
Pregnancy usually occurs by sexual intercourse, but can also occur through assisted reproductive technology procedures. A pregnancy may... | Biology and health sciences | Biology | null |
1773278 | https://en.wikipedia.org/wiki/Model%20of%20computation | Model of computation | In computer science, and more specifically in computability theory and computational complexity theory, a model of computation is a model which describes how an output of a mathematical function is computed given an input. A model describes how units of computations, memories, and communications are organized. The comp... | Mathematics | Computability theory | null |
1774970 | https://en.wikipedia.org/wiki/Multigraph | Multigraph | In mathematics, and more specifically in graph theory, a multigraph is a graph which is permitted to have multiple edges (also called parallel edges), that is, edges that have the same end nodes. Thus two vertices may be connected by more than one edge.
There are 2 distinct notions of multiple edges:
Edges without o... | Mathematics | Graph theory | null |
1776396 | https://en.wikipedia.org/wiki/Ready-mix%20concrete | Ready-mix concrete | Ready-mix concrete (RMC) is concrete that is manufactured in a batch plant, according to each specific job requirement, then delivered to the job site "ready to use".
There are two types with the first being the barrel truck or in–transit mixers. This type of truck delivers concrete in a plastic state to the site. The... | Technology | Building materials | null |
1776839 | https://en.wikipedia.org/wiki/Sample%20size%20determination | Sample size determination | Sample size determination or estimation is the act of choosing the number of observations or replicates to include in a statistical sample. The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample. In practice, the sample size used in a stud... | Mathematics | Statistics | null |
14193930 | https://en.wikipedia.org/wiki/Animal%20feed | Animal feed | Animal feed is food given to domestic animals, especially livestock, in the course of animal husbandry. There are two basic types: fodder and forage. Used alone, the word feed more often refers to fodder. Animal feed is an important input to animal agriculture, and is frequently the main cost of the raising or keeping... | Technology | Animal husbandry | null |
1166642 | https://en.wikipedia.org/wiki/Fletching | Fletching | Fletching is the fin-shaped aerodynamic stabilization device attached on arrows, bolts, darts, or javelins, and are typically made from light semi-flexible materials such as feathers or bark. Each piece of such fin is a fletch, also known as a flight or feather. A fletcher is a person who attaches fletchings to the sha... | Technology | Archery | null |
1167316 | https://en.wikipedia.org/wiki/Vienna%20U-Bahn | Vienna U-Bahn | The Vienna U-Bahn (), where U-Bahn is an abbreviation of the German word Untergrundbahn (), is a rapid transit system serving Vienna, Austria. The five-line network consists of of route, serving 109 stations. 459.8 million passengers rode the U-Bahn in 2019.
The modern-day U-Bahn opened on 25 February 1978, after tes... | Technology | Europe_2 | null |
1168300 | https://en.wikipedia.org/wiki/Amber%20%28color%29 | Amber (color) | The color amber is a pure chroma color, located on the color wheel midway between the colors of yellow and orange. The color name is derived from the material also known as amber, which is commonly found in a range of yellow-orange-brown-red colors; likewise, as a color, amber can refer to a range of yellow-orange colo... | Physical sciences | Colors | Physics |
1168570 | https://en.wikipedia.org/wiki/Joint%20dislocation | Joint dislocation | A joint dislocation, also called luxation, occurs when there is an abnormal separation in the joint, where two or more bones meet. A partial dislocation is referred to as a subluxation. Dislocations are often caused by sudden trauma to the joint like an impact or fall. A joint dislocation can cause damage to the surrou... | Biology and health sciences | Types | Health |
1168808 | https://en.wikipedia.org/wiki/Scarlet%20%28color%29 | Scarlet (color) | Scarlet is a bright red color, sometimes with a slightly orange tinge. In the spectrum of visible light, and on the traditional color wheel, it is one-quarter of the way between red and orange, slightly less orange than vermilion.
According to surveys in Europe and the United States, scarlet and other bright shades of... | Physical sciences | Colors | Physics |
1169181 | https://en.wikipedia.org/wiki/Spectacled%20bear | Spectacled bear | The spectacled bear (Tremarctos ornatus), also known as the South American bear, Andean bear, Andean short-faced bear or mountain bear and locally as jukumari (Aymara and Quechua), ukumari (Quechua) or ukuku, is a species of bear native to the Andes Mountains in northern and western South America. It is the only living... | Biology and health sciences | Bears | Animals |
1169469 | https://en.wikipedia.org/wiki/AC%20adapter | AC adapter | An AC adapter or AC/DC adapter (also called a wall charger, power adapter, power brick, or wall wart) is a type of external power supply, often enclosed in a case similar to an AC plug. AC adapters deliver electric power to devices that lack internal components to draw voltage and power from mains power themselves. T... | Technology | Consumer electronics | null |
1170166 | https://en.wikipedia.org/wiki/Chirality%20%28chemistry%29 | Chirality (chemistry) | In chemistry, a molecule or ion is called chiral () if it cannot be superposed on its mirror image by any combination of rotations, translations, and some conformational changes. This geometric property is called chirality (). The terms are derived from Ancient Greek (cheir) 'hand'; which is the canonical example of a... | Physical sciences | Stereochemistry | Chemistry |
1170169 | https://en.wikipedia.org/wiki/Chirality%20%28physics%29 | Chirality (physics) | A chiral phenomenon is one that is not identical to its mirror image (see the article on mathematical chirality). The spin of a particle may be used to define a handedness, or helicity, for that particle, which, in the case of a massless particle, is the same as chirality. A symmetry transformation between the two is ... | Physical sciences | Quantum numbers | Physics |
18233581 | https://en.wikipedia.org/wiki/Finite%20element%20method | Finite element method | Finite element method (FEM) is a popular method for numerically solving differential equations arising in engineering and mathematical modeling. Typical problem areas of interest include the traditional fields of structural analysis, heat transfer, fluid flow, mass transport, and electromagnetic potential. Computers ar... | Mathematics | Differential equations | null |
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