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12057519 | https://en.wikipedia.org/wiki/Internet%20of%20things | Internet of things | Internet of things (IoT) describes devices with sensors, processing ability, software and other technologies that connect and exchange data with other devices and systems over the Internet or other communication networks. The Internet of things encompasses electronics, communication, and computer science engineering. "... | Technology | Networks | null |
13629466 | https://en.wikipedia.org/wiki/Bronchitis | Bronchitis | Bronchitis is inflammation of the bronchi (large and medium-sized airways) in the lungs that causes coughing. Bronchitis usually begins as an infection in the nose, ears, throat, or sinuses. The infection then makes its way down to the bronchi. Symptoms include coughing up sputum, wheezing, shortness of breath, and che... | Biology and health sciences | Non-infectious disease | null |
11072934 | https://en.wikipedia.org/wiki/Street%20gutter | Street gutter | A street gutter is a depression that runs parallel to a road and is designed to collect rainwater that flows along the street diverting it into a storm drain. A gutter alleviates water buildup on a street, allows pedestrians to pass without walking through puddles, and reduces the risk of hydroplaning by road vehicles.... | Technology | Food, water and health | null |
11078621 | https://en.wikipedia.org/wiki/Polysulfane | Polysulfane | A polysulfane is a chemical compound of formula , where n > 1 (although disulfane () is sometimes excluded). Compounds containing 2 – 8 sulfur atoms have been isolated, longer chain compounds have been detected, but only in solution. is colourless, higher members are yellow with the colour increasing with the sulfur c... | Physical sciences | Hydrogen compounds | Chemistry |
11079974 | https://en.wikipedia.org/wiki/Tint%2C%20shade%20and%20tone | Tint, shade and tone | In color theory, a tint is a mixture of a color with white, which increases lightness, while a shade is a mixture with black, which increases darkness. Both processes affect the resulting color mixture's relative saturation. A tone is produced either by mixing a color with gray, or by both tinting and shading. Mixing a... | Physical sciences | Basics | Physics |
8912313 | https://en.wikipedia.org/wiki/Flower%20mantis | Flower mantis | Flower mantises are praying mantises that use a special form of camouflage referred to as aggressive mimicry, which they not only use to attract prey, but avoid predators as well. These insects have specific colorations and behaviors that mimic flowers in their surrounding habitats.
This strategy has been observed in ... | Biology and health sciences | Insects: General | Animals |
1048332 | https://en.wikipedia.org/wiki/Hotspot%20%28geology%29 | Hotspot (geology) | In geology, hotspots (or hot spots) are volcanic locales thought to be fed by underlying mantle that is anomalously hot compared with the surrounding mantle. Examples include the Hawaii, Iceland, and Yellowstone hotspots. A hotspot's position on the Earth's surface is independent of tectonic plate boundaries, and so ho... | Physical sciences | Volcanic landforms | null |
1048518 | https://en.wikipedia.org/wiki/Supramolecular%20chemistry | Supramolecular chemistry | Supramolecular chemistry refers to the branch of chemistry concerning chemical systems composed of a discrete number of molecules. The strength of the forces responsible for spatial organization of the system range from weak intermolecular forces, electrostatic charge, or hydrogen bonding to strong covalent bonding, pr... | Physical sciences | Supramolecular chemistry | Chemistry |
1050386 | https://en.wikipedia.org/wiki/Audiology | Audiology | Audiology (from Latin , "to hear"; and from Greek branch of learning , -logia) is a branch of science that studies hearing, balance, and related disorders. Audiologists treat those with hearing loss and proactively prevent related damage. By employing various testing strategies (e.g. behavioral hearing tests, otoacou... | Biology and health sciences | Fields of medicine | Health |
1051355 | https://en.wikipedia.org/wiki/Sawfish | Sawfish | Sawfish, also known as carpenter sharks, are a family of rays characterized by a long, narrow, flattened rostrum, or nose extension, lined with sharp transverse teeth, arranged in a way that resembles a saw. They are among the largest fish, with some species reaching lengths of about . They are found worldwide in trop... | Biology and health sciences | Batoidea | null |
1051892 | https://en.wikipedia.org/wiki/Io%20%28moon%29 | Io (moon) | Io (), or Jupiter I, is the innermost and second-smallest of the four Galilean moons of the planet Jupiter. Slightly larger than Earth's moon, Io is the fourth-largest moon in the Solar System, has the highest density of any moon, the strongest surface gravity of any moon, and the lowest amount of water by atomic ratio... | Physical sciences | Solar System | null |
2268160 | https://en.wikipedia.org/wiki/Hip | Hip | In vertebrate anatomy, the hip, or coxa (: coxae) in medical terminology, refers to either an anatomical region or a joint on the outer (lateral) side of the pelvis.
The hip region is located lateral and anterior to the gluteal region, inferior to the iliac crest, and lateral to the obturator foramen, with muscle tend... | Biology and health sciences | Human anatomy | Health |
2269463 | https://en.wikipedia.org/wiki/Thermonuclear%20weapon | Thermonuclear weapon | A thermonuclear weapon, fusion weapon or hydrogen bomb (H bomb) is a second-generation nuclear weapon design. Its greater sophistication affords it vastly greater destructive power than first-generation nuclear bombs, a more compact size, a lower mass, or a combination of these benefits. Characteristics of nuclear fusi... | Technology | Weapons of mass destruction | null |
5675394 | https://en.wikipedia.org/wiki/Giant%20Pacific%20octopus | Giant Pacific octopus | The giant Pacific octopus (Enteroctopus dofleini), also known as the North Pacific giant octopus, is a large marine cephalopod belonging to the genus Enteroctopus and Enteroctopodidae family. Its spatial distribution encompasses much of the coastal North Pacific, from the Mexican state of Baja California, north along t... | Biology and health sciences | Cephalopods | Animals |
14742447 | https://en.wikipedia.org/wiki/Axonopus | Axonopus | Axonopus is a genus of plants in the grass family, known generally as carpet grass. They are native primarily to the tropical and subtropical regions of the Americas with one species in tropical Africa and another on Easter Island. They are sometimes rhizomatous and many are tolerant of periodic submersion.
Species
, ... | Biology and health sciences | Poales | Plants |
354588 | https://en.wikipedia.org/wiki/Hydrothermal%20vent | Hydrothermal vent | Hydrothermal vents are fissures on the seabed from which geothermally heated water discharges. They are commonly found near volcanically active places, areas where tectonic plates are moving apart at mid-ocean ridges, ocean basins, and hotspots. The dispersal of hydrothermal fluids throughout the global ocean at active... | Physical sciences | Geologic features | Earth science |
354618 | https://en.wikipedia.org/wiki/Suspension%20%28chemistry%29 | Suspension (chemistry) | In chemistry, a suspension is a heterogeneous mixture of a fluid that contains solid particles sufficiently large for sedimentation. The particles may be visible to the naked eye, usually must be larger than one micrometer, and will eventually settle, although the mixture is only classified as a suspension when and whi... | Physical sciences | Chemical mixtures: General | null |
354666 | https://en.wikipedia.org/wiki/Shanghai%20Pudong%20International%20Airport | Shanghai Pudong International Airport | Shanghai Pudong International Airport is the busiest of the two international airports serving Shanghai, the largest city by population in China, and a major aviation hub of East Asia, and a major world airport.
Pudong Airport serves both international flights and a smaller number of domestic flights, while the city'... | Technology | Asia | null |
354860 | https://en.wikipedia.org/wiki/Flying%20squirrel | Flying squirrel | Flying squirrels (scientifically known as Pteromyini or Petauristini) are a tribe of 50 species of squirrels in the family Sciuridae. Despite their name, they are not in fact capable of full flight in the same way as birds or bats, but they are able to glide from one tree to another with the aid of a patagium, a furre... | Biology and health sciences | Rodents | Animals |
355155 | https://en.wikipedia.org/wiki/Polar%20orbit | Polar orbit | A polar orbit is one in which a satellite passes above or nearly above both poles of the body being orbited (usually a planet such as the Earth, but possibly another body such as the Moon or Sun) on each revolution. It has an inclination of about 60–90 degrees to the body's equator.
Launching satellites into polar orb... | Physical sciences | Orbital mechanics | Astronomy |
355377 | https://en.wikipedia.org/wiki/Photonic%20crystal | Photonic crystal | A photonic crystal is an optical nanostructure in which the refractive index changes periodically. This affects the propagation of light in the same way that the structure of natural crystals gives rise to X-ray diffraction and that the atomic lattices (crystal structure) of semiconductors affect their conductivity of... | Physical sciences | Optics | Physics |
355522 | https://en.wikipedia.org/wiki/Trematoda | Trematoda | Trematoda is a class of flatworms known as flukes or trematodes. They are obligate internal parasites with a complex life cycle requiring at least two hosts. The intermediate host, in which asexual reproduction occurs, is usually a snail. The definitive host, where the flukes sexually reproduce, is a vertebrate. Infect... | Biology and health sciences | Platyzoa | Animals |
355547 | https://en.wikipedia.org/wiki/London%20dispersion%20force | London dispersion force | London dispersion forces (LDF, also known as dispersion forces, London forces, instantaneous dipole–induced dipole forces, fluctuating induced dipole bonds or loosely as van der Waals forces) are a type of intermolecular force acting between atoms and molecules that are normally electrically symmetric; that is, the ele... | Physical sciences | Supramolecular chemistry | Chemistry |
355765 | https://en.wikipedia.org/wiki/Compound%20eye | Compound eye | A compound eye is a visual organ found in arthropods such as insects and crustaceans. It may consist of thousands of ommatidia, which are tiny independent photoreception units that consist of a cornea, lens, and photoreceptor cells which distinguish brightness and color. The image perceived by this arthropod eye is a c... | Biology and health sciences | Visual system | Biology |
355776 | https://en.wikipedia.org/wiki/Pellagra | Pellagra | Pellagra is a disease caused by a lack of the vitamin niacin (vitamin B3). Symptoms include inflamed skin, diarrhea, dementia, and sores in the mouth. Areas of the skin exposed to friction and radiation are typically affected first. Over time affected skin may become darker, stiffen, peel, or bleed.
There are two mai... | Biology and health sciences | Health and fitness: General | Health |
355802 | https://en.wikipedia.org/wiki/Egg%20white | Egg white | Egg white is the clear liquid (also called the albumen or the glair/glaire) contained within an egg. In chickens, it is formed from the layers of secretions of the anterior section of the hen's oviduct during the passage of the egg. It forms around fertilized or unfertilized egg yolks. The primary natural purpose of eg... | Biology and health sciences | Animal reproduction | Biology |
355859 | https://en.wikipedia.org/wiki/Epoxide | Epoxide | In organic chemistry, an epoxide is a cyclic ether, where the ether forms a three-atom ring: two atoms of carbon and one atom of oxygen. This triangular structure has substantial ring strain, making epoxides highly reactive, more so than other ethers. They are produced on a large scale for many applications. In gene... | Physical sciences | Esters and ethers | Chemistry |
355989 | https://en.wikipedia.org/wiki/Nudibranch | Nudibranch | Nudibranchs () belong to the order Nudibranchia, a group of soft-bodied marine gastropod molluscs that shed their shells after their larval stage. They are noted for their often extraordinary colours and striking forms, and they have been given colourful nicknames to match, such as "clown", "marigold", "splendid", "dan... | Biology and health sciences | Gastropods | Animals |
356046 | https://en.wikipedia.org/wiki/Ghost%20crab | Ghost crab | Ghost crabs are semiterrestrial crabs of the subfamily Ocypodinae. They are common shore crabs in tropical and subtropical regions throughout the world, inhabiting deep burrows in the intertidal zone. They are generalist scavengers and predators of small animals. The name "ghost crab" derives from their nocturnality an... | Biology and health sciences | Crabs and hermit crabs | Animals |
356244 | https://en.wikipedia.org/wiki/New%20World%20monkey | New World monkey | New World monkeys are the five families of primates that are found in the tropical regions of Mexico, Central and South America: Callitrichidae, Cebidae, Aotidae, Pitheciidae, and Atelidae. The five families are ranked together as the Ceboidea (), the only extant superfamily in the parvorder Platyrrhini ().
Platyrrhin... | Biology and health sciences | Primates | null |
356259 | https://en.wikipedia.org/wiki/Old%20World%20monkey | Old World monkey | Old World monkeys are primates in the family Cercopithecidae (). Twenty-four genera and 138 species are recognized, making it the largest primate family. Old World monkey genera include baboons (genus Papio), red colobus (genus Piliocolobus), and macaques (genus Macaca). Common names for other Old World monkeys include... | Biology and health sciences | Primates | null |
356988 | https://en.wikipedia.org/wiki/Pleural%20effusion | Pleural effusion | A pleural effusion is accumulation of excessive fluid in the pleural space, the potential space that surrounds each lung.
Under normal conditions, pleural fluid is secreted by the parietal pleural capillaries at a rate of 0.6 millilitre per kilogram weight per hour, and is cleared by lymphatic absorption leaving behind... | Biology and health sciences | Specific diseases | Health |
357346 | https://en.wikipedia.org/wiki/Hundred%20%28county%20division%29 | Hundred (county division) | A hundred is an administrative division that is geographically part of a larger region. It was formerly used in England, Wales, some parts of the United States, Denmark, Sweden, Finland, Norway, and in Cumberland County in the British Colony of New South Wales. It is still used in other places, including in Australia (... | Physical sciences | Area | Basics and measurement |
357353 | https://en.wikipedia.org/wiki/Large%20Hadron%20Collider | Large Hadron Collider | The Large Hadron Collider (LHC) is the world's largest and highest-energy particle accelerator. It was built by the European Organization for Nuclear Research (CERN) between 1998 and 2008 in collaboration with over 10,000 scientists and hundreds of universities and laboratories across more than 100 countries. It lies ... | Physical sciences | Particle physics: General | null |
357367 | https://en.wikipedia.org/wiki/Granny%20Smith | Granny Smith | The Granny Smith, also known as a green apple or sour apple, is an apple cultivar that originated in Australia in 1868. It is named after Maria Ann Smith, who propagated the cultivar from a chance seedling. The tree is thought to be a hybrid of Malus sylvestris, the European wild apple, with the domesticated apple Malu... | Biology and health sciences | Pomes | Plants |
357416 | https://en.wikipedia.org/wiki/Monomial | Monomial | In mathematics, a monomial is, roughly speaking, a polynomial which has only one term. Two definitions of a monomial may be encountered:
A monomial, also called a power product or primitive monomial, is a product of powers of variables with nonnegative integer exponents, or, in other words, a product of variables, pos... | Mathematics | Basics | null |
357632 | https://en.wikipedia.org/wiki/Mating | Mating | In biology, mating is the pairing of either opposite-sex or hermaphroditic organisms for the purposes of sexual reproduction. Fertilization is the fusion of two gametes. Copulation is the union of the sex organs of two sexually reproducing animals for insemination and subsequent internal fertilization. Mating may also... | Biology and health sciences | Ethology | Biology |
357636 | https://en.wikipedia.org/wiki/Flight%20control%20surfaces | Flight control surfaces | Aircraft flight control surfaces are aerodynamic devices allowing a pilot to adjust and control the aircraft's flight attitude.
Development of an effective set of flight control surfaces was a critical advance in the development of aircraft. Early efforts at fixed-wing aircraft design succeeded in generating sufficien... | Technology | Aircraft components | null |
357657 | https://en.wikipedia.org/wiki/Bloch%27s%20theorem | Bloch's theorem | In condensed matter physics, Bloch's theorem states that solutions to the Schrödinger equation in a periodic potential can be expressed as plane waves modulated by periodic functions. The theorem is named after the Swiss physicist Felix Bloch, who discovered the theorem in 1929. Mathematically, they are written
where ... | Physical sciences | Basics_2 | Physics |
357672 | https://en.wikipedia.org/wiki/Posterior%20probability | Posterior probability | The posterior probability is a type of conditional probability that results from updating the prior probability with information summarized by the likelihood via an application of Bayes' rule. From an epistemological perspective, the posterior probability contains everything there is to know about an uncertain proposit... | Mathematics | Statistics | null |
9607933 | https://en.wikipedia.org/wiki/Handshaking%20lemma | Handshaking lemma | In graph theory, the handshaking lemma is the statement that, in every finite undirected graph, the number of vertices that touch an odd number of edges is even. For example, if there is a party of people who shake hands, the number of people who shake an odd number of other people's hands is even. The handshaking lemm... | Mathematics | Graph theory | null |
16351567 | https://en.wikipedia.org/wiki/Mass%20fraction%20%28chemistry%29 | Mass fraction (chemistry) | In chemistry, the mass fraction of a substance within a mixture is the ratio (alternatively denoted ) of the mass of that substance to the total mass of the mixture. Expressed as a formula, the mass fraction is:
Because the individual masses of the ingredients of a mixture sum to , their mass fractions sum to u... | Physical sciences | Ratio | Basics and measurement |
12071235 | https://en.wikipedia.org/wiki/Integrated%20multi-trophic%20aquaculture | Integrated multi-trophic aquaculture | Integrated multi-trophic aquaculture (IMTA) is a type of aquaculture where the byproducts, including waste, from one aquatic species are used as inputs (fertilizers, food) for another. Farmers combine fed aquaculture (e.g., fish, shrimp) with inorganic extractive (e.g., seaweed) and organic extractive (e.g., shellfish)... | Technology | Aquaculture | null |
12074071 | https://en.wikipedia.org/wiki/Ei%20mechanism | Ei mechanism | {{DISPLAYTITLE:Ei mechanism}}
In organic chemistry, the Ei mechanism (Elimination Internal/Intramolecular), also known as a thermal syn elimination or a pericyclic syn elimination, is a special type of elimination reaction in which two vicinal (adjacent) substituents on an alkane framework leave simultaneously via a c... | Physical sciences | Organic reactions | Chemistry |
1615787 | https://en.wikipedia.org/wiki/Ipomoea%20aquatica | Ipomoea aquatica | Ipomoea aquatica, widely known as water spinach, is a semi-aquatic, tropical plant grown as a vegetable for its tender shoots. I. aquatica is generally believed to have been first domesticated in Southeast Asia. It is widely cultivated in Southeast Asia, East Asia, and South Asia. It grows abundantly near waterways an... | Biology and health sciences | Leafy vegetables | Plants |
1616775 | https://en.wikipedia.org/wiki/Dissociation%20%28chemistry%29 | Dissociation (chemistry) | Dissociation in chemistry is a general process in which molecules (or ionic compounds such as salts, or complexes) separate or split into other things such as atoms, ions, or radicals, usually in a reversible manner. For instance, when an acid dissolves in water, a covalent bond between an electronegative atom and a hy... | Physical sciences | Basics_3 | Chemistry |
1616901 | https://en.wikipedia.org/wiki/Pterocarpus%20indicus | Pterocarpus indicus | Pterocarpus indicus (commonly known as Amboyna wood, Malay padauk, Papua New Guinea rosewood, Philippine mahogany, Andaman redwood, Burmese rosewood, narra (from Tagalog) and asana in the Philippines, angsana, or Pashu padauk) is a species of Pterocarpus of the Sweet Pea Family (Papilionaceae) native to southeastern As... | Biology and health sciences | Fabales | Plants |
1617971 | https://en.wikipedia.org/wiki/Pteridophyte | Pteridophyte | A pteridophyte is a vascular plant (with xylem and phloem) that reproduces by means of spores. Because pteridophytes produce neither flowers nor seeds, they are sometimes referred to as "cryptogams", meaning that their means of reproduction is hidden. They are also the ancestors of the plants we see today.
Ferns, hor... | Biology and health sciences | Pteridophytes | null |
1618377 | https://en.wikipedia.org/wiki/Oceanic%20basin | Oceanic basin | In hydrology, an oceanic basin (or ocean basin) is anywhere on Earth that is covered by seawater. Geologically, most of the ocean basins are large geologic basins that are below sea level.
Most commonly the ocean is divided into basins following the continents distribution: the North and South Atlantic (together appro... | Physical sciences | Oceanic and coastal landforms | Earth science |
1618406 | https://en.wikipedia.org/wiki/Diamondback%20terrapin | Diamondback terrapin | The diamondback terrapin or simply terrapin (Malaclemys terrapin) is a species of terrapin native to the brackish coastal tidal marshes of the East Coast of the United States and the Gulf of Mexico coast, as well as in Bermuda. It belongs to the monotypic genus Malaclemys. It has one of the largest ranges of all turtl... | Biology and health sciences | Turtles | Animals |
1618887 | https://en.wikipedia.org/wiki/Square%20yard | Square yard | The square yard (Northern India: gaj, Pakistan: gaz) is an imperial unit and U.S. customary unit of area. It is in widespread use in most of the English-speaking world, particularly the United States, United Kingdom, Canada, Pakistan and India. It is defined as the area of a square with sides of one yard (three feet, t... | Physical sciences | Area | Basics and measurement |
1619420 | https://en.wikipedia.org/wiki/White-necked%20jacobin | White-necked jacobin | The white-necked jacobin (Florisuga mellivora) is a medium-size hummingbird that ranges from Mexico south through Central America and northern South America into Brazil, Peru and Bolivia. It is also found in Trinidad & Tobago.
Other common names are great jacobin and collared hummingbird.
Taxonomy
In 1743 the English... | Biology and health sciences | Apodiformes | Animals |
60411 | https://en.wikipedia.org/wiki/Steller%27s%20sea%20cow | Steller's sea cow | Steller's sea cow (Hydrodamalis gigas) is an extinct sirenian described by Georg Wilhelm Steller in 1741. At that time, it was found only around the Commander Islands in the Bering Sea between Alaska and Russia; its range extended across the North Pacific during the Pleistocene epoch, and likely contracted to such an e... | Biology and health sciences | Sirenia | Animals |
60424 | https://en.wikipedia.org/wiki/Hallucigenia | Hallucigenia | Hallucigenia is a genus of lobopodian known from Cambrian aged fossils in Burgess Shale-type deposits in Canada and China, and from isolated spines around the world. The generic name reflects the type species' unusual appearance and eccentric history of study; when it was erected as a genus, H. sparsa was reconstructe... | Biology and health sciences | Ecdysozoa | Animals |
60426 | https://en.wikipedia.org/wiki/Symbiogenesis | Symbiogenesis | Symbiogenesis (endosymbiotic theory, or serial endosymbiotic theory) is the leading evolutionary theory of the origin of eukaryotic cells from prokaryotic organisms. The theory holds that mitochondria, plastids such as chloroplasts, and possibly other organelles of eukaryotic cells are descended from formerly free-livi... | Biology and health sciences | Organelles and other cell parts | null |
60491 | https://en.wikipedia.org/wiki/Abstraction%20%28computer%20science%29 | Abstraction (computer science) | In software engineering and computer science, abstraction is the process of generalizing concrete details, such as attributes, away from the study of objects and systems to focus attention on details of greater importance. Abstraction is a fundamental concept in computer science and software engineering, especially wit... | Technology | Software development: General | null |
60492 | https://en.wikipedia.org/wiki/Abstract%20machine | Abstract machine | In computer science, an abstract machine is a theoretical model that allows for a detailed and precise analysis of how a computer system functions. It is similar to a mathematical function in that it receives inputs and produces outputs based on predefined rules. Abstract machines vary from literal machines in that the... | Mathematics | Discrete mathematics | null |
60558 | https://en.wikipedia.org/wiki/ARM%20architecture%20family | ARM architecture family | ARM (stylised in lowercase as arm, formerly an acronym for Advanced RISC Machines and originally Acorn RISC Machine) is a family of RISC instruction set architectures (ISAs) for computer processors. Arm Holdings develops the ISAs and licenses them to other companies, who build the physical devices that use the instruct... | Technology | Computer architecture concepts | null |
60560 | https://en.wikipedia.org/wiki/Tetrapod | Tetrapod | A tetrapod (; from Ancient Greek τετρα- (tetra-) 'four' and πούς (poús) 'foot') is any four-limbed vertebrate animal of the superclass Tetrapoda (). Tetrapods include all extant and extinct amphibians and amniotes, with the latter in turn evolving into two major clades, the sauropsids (reptiles, including dinosaurs an... | Biology and health sciences | Vertebrates, general classification | null |
60569 | https://en.wikipedia.org/wiki/Rectifier | Rectifier | A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction.
The process is known as rectification, since it "straightens" the direction of current. Physically, rectifiers take a number of forms, including ... | Technology | Functional circuits | null |
60575 | https://en.wikipedia.org/wiki/Cardiac%20arrest | Cardiac arrest | Cardiac arrest (also known as sudden cardiac arrest [SCA]) is when the heart suddenly and unexpectedly stops beating. When the heart stops beating, blood cannot properly circulate around the body and the blood flow to the brain and other organs is decreased. When the brain does not receive enough blood, this can cause ... | Biology and health sciences | Injury | null |
60600 | https://en.wikipedia.org/wiki/Barcode | Barcode | A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called barc... | Technology | Data storage | null |
60605 | https://en.wikipedia.org/wiki/Dust%20storm | Dust storm | A dust storm, also called a sandstorm, is a meteorological phenomenon common in arid and semi-arid regions. Dust storms arise when a gust front or other strong wind blows loose sand and dirt from a dry surface. Fine particles are transported by saltation and suspension, a process that moves soil from one place and depo... | Physical sciences | Storms | null |
60644 | https://en.wikipedia.org/wiki/Peripheral | Peripheral | A peripheral device, or simply peripheral, is an auxiliary hardware device that a computer uses to transfer information externally. A peripheral is a hardware component that is accessible to and controlled by a computer but is not a core component of the computer.
A peripheral can be categorized based on the directio... | Technology | User interface | null |
60646 | https://en.wikipedia.org/wiki/Tower%20Bridge | Tower Bridge | Tower Bridge is a Grade I listed combined bascule, suspension, and, until 1960, cantilever bridge in London, built between 1886 and 1894, designed by Horace Jones and engineered by John Wolfe Barry with the help of Henry Marc Brunel. It crosses the River Thames close to the Tower of London and is one of five London bri... | Technology | Transport infrastructure | null |
60703 | https://en.wikipedia.org/wiki/Fennec%20fox | Fennec fox | The fennec fox (Vulpes zerda) is a small fox native to the deserts of North Africa, ranging from Western Sahara and Mauritania to the Sinai Peninsula. Its most distinctive feature is its unusually large ears, which serve to dissipate heat and listen for underground prey. The fennec is the smallest fox species. Its coat... | Biology and health sciences | Canines | Animals |
60710 | https://en.wikipedia.org/wiki/Ferrocene | Ferrocene | Ferrocene is an organometallic compound with the formula . The molecule is a complex consisting of two cyclopentadienyl rings sandwiching a central iron atom. It is an orange solid with a camphor-like odor that sublimes above room temperature, and is soluble in most organic solvents. It is remarkable for its stability:... | Physical sciences | Organometallics | Chemistry |
60770 | https://en.wikipedia.org/wiki/Curvature | Curvature | In mathematics, curvature is any of several strongly related concepts in geometry that intuitively measure the amount by which a curve deviates from being a straight line or by which a surface deviates from being a plane. If a curve or surface is contained in a larger space, curvature can be defined extrinsically relat... | Mathematics | Functions: General | null |
60777 | https://en.wikipedia.org/wiki/Limonite | Limonite | Limonite () is an iron ore consisting of a mixture of hydrated iron(III) oxide-hydroxides in varying composition. The generic formula is frequently written as , although this is not entirely accurate as the ratio of oxide to hydroxide can vary quite widely. Limonite is one of the three principal iron ores, the others b... | Physical sciences | Minerals | Earth science |
60784 | https://en.wikipedia.org/wiki/Boulder | Boulder | In geology, a boulder (or rarely bowlder) is a rock fragment with size greater than in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive. In common usage, a boulder is too large for a person to move. Smaller boulders are ... | Physical sciences | Sedimentology | Earth science |
60825 | https://en.wikipedia.org/wiki/Endorphins | Endorphins | Endorphins (contracted from endogenous morphine) are peptides produced in the brain that block the perception of pain and increase feelings of wellbeing. They are produced and stored in the pituitary gland of the brain. Endorphins are endogenous painkillers often produced in the brain and adrenal medulla during physica... | Biology and health sciences | Animal hormones | Biology |
60828 | https://en.wikipedia.org/wiki/Lepton | Lepton | In particle physics, a lepton is an elementary particle of half-integer spin (spin ) that does not undergo strong interactions. Two main classes of leptons exist: charged leptons (also known as the electron-like leptons or muons), including the electron, muon, and tauon, and neutral leptons, better known as neutrinos. ... | Physical sciences | Fermions | null |
60871 | https://en.wikipedia.org/wiki/Luminescence | Luminescence | Luminescence is a spontaneous emission of radiation from an electronically or vibrationally excited species not in thermal equilibrium with its environment. A luminescent object emits cold light in contrast to incandescence, where an object only emits light after heating. Generally, the emission of light is due to the ... | Physical sciences | Electromagnetic radiation | Physics |
60876 | https://en.wikipedia.org/wiki/Markov%20chain | Markov chain | In probability theory and statistics, a Markov chain or Markov process is a stochastic process describing a sequence of possible events in which the probability of each event depends only on the state attained in the previous event. Informally, this may be thought of as, "What happens next depends only on the state of ... | Mathematics | Statistics and probability | null |
60883 | https://en.wikipedia.org/wiki/Watch | Watch | A watch is a timepiece carried or worn by a person. It is designed to keep a consistent movement despite the motions caused by the person's activities. A wristwatch is designed to be worn around the wrist, attached by a watch strap or other type of bracelet, including metal bands or leather straps. A pocket watch is ca... | Technology | Timekeeping | null |
60900 | https://en.wikipedia.org/wiki/Carp | Carp | The term carp (: carp) is a generic common name for numerous species of freshwater fish from the family Cyprinidae, a very large clade of ray-finned fish mostly native to Eurasia. While carp are prized quarries and are valued (even commercially cultivated) as both food and ornamental fish in many parts of the Old World... | Biology and health sciences | Cypriniformes | null |
60908 | https://en.wikipedia.org/wiki/Common%20carp | Common carp | The common carp (Cyprinus carpio), also known as European carp or Eurasian carp, is a widespread freshwater fish of eutrophic waters in lakes and large rivers in Europe and Asia. The native wild populations are considered vulnerable to extinction by the International Union for Conservation of Nature (IUCN), but the sp... | Biology and health sciences | Cypriniformes | Animals |
60951 | https://en.wikipedia.org/wiki/Cardamom | Cardamom | Cardamom (), sometimes cardamon or cardamum, is a spice made from the seeds of several plants in the genera Elettaria and Amomum in the family Zingiberaceae. Both genera are native to the Indian subcontinent and Indonesia. They are recognized by their small seed pods: triangular in cross-section and spindle-shaped, wit... | Biology and health sciences | Monocots | null |
60980 | https://en.wikipedia.org/wiki/Digital%20Visual%20Interface | Digital Visual Interface | Digital Visual Interface (DVI) is a video display interface developed by the Digital Display Working Group (DDWG). The digital interface is used to connect a video source, such as a video display controller, to a display device, such as a computer monitor. It was developed with the intention of creating an industry sta... | Technology | User interface | null |
60996 | https://en.wikipedia.org/wiki/Firefly | Firefly | The Lampyridae are a family of elateroid beetles with more than 2,000 described species, many of which are light-emitting. They are soft-bodied beetles commonly called fireflies, lightning bugs, or glowworms for their conspicuous production of light, mainly during twilight, to attract mates. The type species is Lampyr... | Biology and health sciences | Beetles (Coleoptera) | null |
61088 | https://en.wikipedia.org/wiki/Smallpox%20vaccine | Smallpox vaccine | The smallpox vaccine is used to prevent smallpox infection caused by the variola virus. It is the first vaccine to have been developed against a contagious disease. In 1796, British physician Edward Jenner demonstrated that an infection with the relatively mild cowpox virus conferred immunity against the deadly smallpo... | Biology and health sciences | Drugs and pharmacology | null |
61097 | https://en.wikipedia.org/wiki/Roche%20limit | Roche limit | In celestial mechanics, the Roche limit, also called Roche radius, is the distance from a celestial body within which a second celestial body, held together only by its own force of gravity, will disintegrate because the first body's tidal forces exceed the second body's self-gravitation. Inside the Roche limit, orbiti... | Physical sciences | Celestial mechanics | Astronomy |
61162 | https://en.wikipedia.org/wiki/Taurine | Taurine | Taurine (), or 2-aminoethanesulfonic acid, is a non-proteinogenic naturally occurring amino sulfonic acid that is widely distributed in animal tissues. It is a major constituent of bile and can be found in the large intestine, and accounts for up to 0.1% of total human body weight.
Taurine is named after Latin (cogna... | Physical sciences | Amides and amines | Chemistry |
61164 | https://en.wikipedia.org/wiki/Transmitter | Transmitter | In electronics and telecommunications, a radio transmitter or just transmitter (often abbreviated as XMTR or TX in technical documents) is an electronic device which produces radio waves with an antenna with the purpose of signal transmission up to a radio receiver. The transmitter itself generates a radio frequency al... | Technology | Broadcasting | null |
61190 | https://en.wikipedia.org/wiki/Cauchy%27s%20integral%20theorem | Cauchy's integral theorem | In mathematics, the Cauchy integral theorem (also known as the Cauchy–Goursat theorem) in complex analysis, named after Augustin-Louis Cauchy (and Édouard Goursat), is an important statement about line integrals for holomorphic functions in the complex plane. Essentially, it says that if is holomorphic in a simply con... | Mathematics | Complex analysis | null |
61211 | https://en.wikipedia.org/wiki/Anatase | Anatase | Anatase is a metastable mineral form of titanium dioxide (TiO2) with a tetragonal crystal structure. Although colorless or white when pure, anatase in nature is usually a black solid due to impurities. Three other polymorphs (or mineral forms) of titanium dioxide are known to occur naturally: brookite, akaogiite, and... | Physical sciences | Minerals | Earth science |
61213 | https://en.wikipedia.org/wiki/Laurent%20series | Laurent series | In mathematics, the Laurent series of a complex function is a representation of that function as a power series which includes terms of negative degree. It may be used to express complex functions in cases where a Taylor series expansion cannot be applied. The Laurent series was named after and first published by Pier... | Mathematics | Sequences and series | null |
61260 | https://en.wikipedia.org/wiki/Filling%20station | Filling station | A filling station (also known as a gas station [] or petrol station []) is a facility that sells fuel and engine lubricants for motor vehicles. The most common fuels sold are gasoline (or petrol) and diesel fuel.
Fuel dispensers are used to pump gasoline, diesel, compressed natural gas, compressed hydrogen, hydrogen ... | Technology | Road transport | null |
61271 | https://en.wikipedia.org/wiki/Auxiliary%20power%20unit | Auxiliary power unit | An auxiliary power unit (APU), is a device on a vehicle that provides energy for functions other than propulsion. They are commonly found on large aircraft and naval ships as well as some large land vehicles. Aircraft APUs generally produce 115 V AC voltage at 400 Hz (rather than 50/60 Hz in mains supply), to run the e... | Technology | Aircraft components | null |
61316 | https://en.wikipedia.org/wiki/Galois%20theory | Galois theory | In mathematics, Galois theory, originally introduced by Évariste Galois, provides a connection between field theory and group theory. This connection, the fundamental theorem of Galois theory, allows reducing certain problems in field theory to group theory, which makes them simpler and easier to understand.
Galois in... | Mathematics | Algebra | null |
61334 | https://en.wikipedia.org/wiki/Pygmy%20hippopotamus | Pygmy hippopotamus | The pygmy hippopotamus or pygmy hippo (Choeropsis liberiensis) is a small hippopotamid which is native to the forests and swamps of West Africa, primarily in Liberia, with small populations in Sierra Leone, Guinea, and Ivory Coast. It has been extirpated from Nigeria.
The pygmy hippo is reclusive and nocturnal. It is ... | Biology and health sciences | Other artiodactyla | Animals |
61338 | https://en.wikipedia.org/wiki/Addition | Addition | Addition (usually signified by the plus symbol ) is one of the four basic operations of arithmetic, the other three being subtraction, multiplication and division. The addition of two whole numbers results in the total amount or sum of those values combined. The example in the adjacent image shows two columns of three ... | Mathematics | Basics | null |
61344 | https://en.wikipedia.org/wiki/Lightning | Lightning | Lightning is a natural phenomenon, more specifically an atmospheric electrical phenomenon. It consists of electrostatic discharges occurring through the atmosphere between two electrically charged regions, either both existing within the atmosphere or one within the atmosphere and one on the ground, with these regions ... | Physical sciences | Storms | null |
61346 | https://en.wikipedia.org/wiki/Commutative%20ring | Commutative ring | In mathematics, a commutative ring is a ring in which the multiplication operation is commutative. The study of commutative rings is called commutative algebra. Complementarily, noncommutative algebra is the study of ring properties that are not specific to commutative rings. This distinction results from the high numb... | Mathematics | Algebra | null |
61388 | https://en.wikipedia.org/wiki/Deoxyribose | Deoxyribose | Deoxyribose, or more precisely 2-deoxyribose, is a monosaccharide with idealized formula H−(C=O)−(CH2)−(CHOH)3−H. Its name indicates that it is a deoxy sugar, meaning that it is derived from the sugar ribose by loss of a hydroxy group. Discovered in 1929 by Phoebus Levene, deoxyribose is most notable for its presence i... | Biology and health sciences | Carbohydrates | Biology |
61476 | https://en.wikipedia.org/wiki/Radius%20of%20convergence | Radius of convergence | In mathematics, the radius of convergence of a power series is the radius of the largest disk at the center of the series in which the series converges. It is either a non-negative real number or . When it is positive, the power series converges absolutely and uniformly on compact sets inside the open disk of radius ... | Mathematics | Sequences and series | null |
61478 | https://en.wikipedia.org/wiki/Analytic%20function | Analytic function | In mathematics, an analytic function is a function that is locally given by a convergent power series. There exist both real analytic functions and complex analytic functions. Functions of each type are infinitely differentiable, but complex analytic functions exhibit properties that do not generally hold for real anal... | Mathematics | Functions: General | null |
61532 | https://en.wikipedia.org/wiki/Absolute%20convergence | Absolute convergence | In mathematics, an infinite series of numbers is said to converge absolutely (or to be absolutely convergent) if the sum of the absolute values of the summands is finite. More precisely, a real or complex series is said to converge absolutely if for some real number Similarly, an improper integral of a function, i... | Mathematics | Sequences and series | null |
61534 | https://en.wikipedia.org/wiki/Australopithecus | Australopithecus | Australopithecus (, ; or (, ) is a genus of early hominins that existed in Africa during the Pliocene and Early Pleistocene. The genera Homo (which includes modern humans), Paranthropus, and Kenyanthropus evolved from some Australopithecus species. Australopithecus is a member of the subtribe Australopithecina, which ... | Biology and health sciences | Evolution | null |
61550 | https://en.wikipedia.org/wiki/Black%20swan | Black swan | The black swan (Cygnus atratus) is a large waterbird, a species of swan which breeds mainly in the southeast and southwest regions of Australia. Within Australia, the black swan is nomadic, with erratic migration patterns dependent on climatic conditions. It is a large bird with black plumage and a red bill. It is a mo... | Biology and health sciences | Anseriformes | Animals |
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