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3596398 | https://en.wikipedia.org/wiki/Polarography | Polarography | Polarography is a type of voltammetry where the working electrode is a dropping mercury electrode (DME) or a static mercury drop electrode (SMDE), which are useful for their wide cathodic ranges and renewable surfaces. It was invented in 1922 by Czechoslovak chemist Jaroslav Heyrovský, for which he won the Nobel prize ... | Physical sciences | Electrical methods | Chemistry |
132151 | https://en.wikipedia.org/wiki/Helmet | Helmet | A helmet is a form of protective gear worn to protect the head. More specifically, a helmet complements the skull in protecting the human brain. Ceremonial or symbolic helmets (e.g., a policeman's helmet in the United Kingdom) without protective function are sometimes worn. Soldiers wear combat helmets, often made from... | Technology | Armour | null |
25299326 | https://en.wikipedia.org/wiki/Chronic%20periodontitis | Chronic periodontitis | Chronic periodontitis is one of the seven categories of periodontitis as defined by the American Academy of Periodontology 1999 classification system. Chronic periodontitis is a common disease of the oral cavity consisting of chronic inflammation of the periodontal tissues that is caused by the accumulation of profuse ... | Biology and health sciences | Specific diseases | Health |
1903166 | https://en.wikipedia.org/wiki/Loggerhead%20sea%20turtle | Loggerhead sea turtle | The loggerhead sea turtle (Caretta caretta) is a species of oceanic turtle distributed throughout the world. It is a marine reptile, belonging to the family Cheloniidae. The average loggerhead measures around in carapace length when fully grown. The adult loggerhead sea turtle weighs approximately , with the largest s... | Biology and health sciences | Turtles | Animals |
1904332 | https://en.wikipedia.org/wiki/Brassica%20rapa | Brassica rapa | Brassica rapa is a plant species that has been widely cultivated into many forms, including the turnip (a root vegetable), komatsuna, napa cabbage, bomdong, bok choy, and rapini.
Brassica rapa subsp. oleifera is an oilseed commonly known as turnip rape, field mustard, bird's rape, and keblock. Rapeseed oil is a genera... | Biology and health sciences | Brassicales | Plants |
1904373 | https://en.wikipedia.org/wiki/Transformation%20%28function%29 | Transformation (function) | In mathematics, a transformation, transform, or self-map is a function f, usually with some geometrical underpinning, that maps a set X to itself, i.e. .
Examples include linear transformations of vector spaces and geometric transformations, which include projective transformations, affine transformations, and specific... | Mathematics | Geometry: General | null |
1906103 | https://en.wikipedia.org/wiki/Human%20reproductive%20system | Human reproductive system | The human reproductive system includes the male reproductive system, which functions to produce and deposit sperm, and the female reproductive system, which functions to produce egg cells and to protect and nourish the fetus until birth. Humans have a high level of sexual differentiation. In addition to differences in ... | Biology and health sciences | Human anatomy | Health |
1906321 | https://en.wikipedia.org/wiki/Ransomware | Ransomware | Ransomware is a type of malware that encrypts the victim's personal data until a ransom is paid. They commonly use difficult-to-trace digital currencies such as paysafecard or Bitcoin and other cryptocurrencies are used for the ransoms, making tracing and prosecuting the perpetrators difficult. Sometimes the original f... | Technology | Computer security | null |
1906854 | https://en.wikipedia.org/wiki/R/K%20selection%20theory | R/K selection theory | In ecology, selection theory relates to the selection of combinations of traits in an organism that trade off between quantity and quality of offspring. The focus on either an increased quantity of offspring at the expense of reduced individual parental investment of -strategists, or on a reduced quantity of offspring... | Biology and health sciences | Ecology | Biology |
1906880 | https://en.wikipedia.org/wiki/Rhizopus | Rhizopus | Rhizopus is a genus of common saprophytic fungi on plants and specialized parasites on animals. They are found in a wide variety of organic substances, including "mature fruits and vegetables", jellies, syrups, leather, bread, peanuts, and tobacco. They are multicellular. Some Rhizopus species are opportunistic human ... | Biology and health sciences | Basics | Plants |
2645795 | https://en.wikipedia.org/wiki/Taeniasis | Taeniasis | Taeniasis is an infection within the intestines by adult tapeworms belonging to the genus Taenia. There are generally no or only mild symptoms. Symptoms may occasionally include weight loss or abdominal pain. Segments of tapeworm may be seen in the stool. Complications of pork tapeworm may include cysticercosis.
Types... | Biology and health sciences | Helminthic diseases and infestations | Health |
12978962 | https://en.wikipedia.org/wiki/Plane%20table | Plane table | A plane table (plain table prior to 1830) is a device used in surveying, site mapping, exploration mapping, coastal navigation mapping, and related disciplines to provide a solid and level surface on which to make field drawings, charts and maps. The early use of the name plain table reflected its simplicity and plain... | Technology | Surveying tools | null |
12981660 | https://en.wikipedia.org/wiki/CMB%20cold%20spot | CMB cold spot | The CMB Cold Spot or WMAP Cold Spot is a region of the sky seen in microwaves that has been found to be unusually large and cold relative to the expected properties of the cosmic microwave background radiation (CMBR). The "Cold Spot" is approximately 70 μK (0.00007 K) colder than the average CMB temperature (approximat... | Physical sciences | Notable patches of universe | Astronomy |
22450812 | https://en.wikipedia.org/wiki/Bedform | Bedform | A bedform is a geological feature that develops at the interface of fluid and a moveable bed, the result of bed material being moved by fluid flow. Examples include ripples and dunes on the bed of a river. Bedforms are often preserved in the rock record as a result of being present in a depositional setting. Bedforms a... | Physical sciences | Sedimentology | Earth science |
4857087 | https://en.wikipedia.org/wiki/Aluminosilicate | Aluminosilicate | Aluminosilicate refers to materials containing anionic Si-O-Al linkages. Commonly, the associate cations are sodium (Na+), potassium (K+) and protons (H+). Such materials occur as minerals, coal combustion products and as synthetic materials, often in the form of zeolites. Both synthetic and natural aluminosilicates ... | Physical sciences | Silicate minerals | Earth science |
4857714 | https://en.wikipedia.org/wiki/Cumacea | Cumacea | Cumacea is an order of small marine crustaceans of the superorder Peracarida, occasionally called hooded shrimp or comma shrimp. Their unique appearance and uniform body plan makes them easy to distinguish from other crustaceans. They live in soft-bottoms such as mud and sand, mostly in the marine environment. There ar... | Biology and health sciences | Malacostraca | Animals |
4863813 | https://en.wikipedia.org/wiki/Halkieriid | Halkieriid | The halkieriids are a group of fossil organisms from the Lower to Middle Cambrian. Their eponymous genus is Halkieria , which has been found on almost every continent in Lower to Mid Cambrian deposits, forming a large component of the small shelly fossil assemblages. The best known species is Halkieria evangelista, ... | Biology and health sciences | Mollusks | Animals |
27147535 | https://en.wikipedia.org/wiki/Transport%20phenomena | Transport phenomena | In engineering, physics, and chemistry, the study of transport phenomena concerns the exchange of mass, energy, charge, momentum and angular momentum between observed and studied systems. While it draws from fields as diverse as continuum mechanics and thermodynamics, it places a heavy emphasis on the commonalities bet... | Physical sciences | Physics basics: General | Physics |
27156495 | https://en.wikipedia.org/wiki/Lagerpetidae | Lagerpetidae | Lagerpetidae (; originally Lagerpetonidae) is a family of basal avemetatarsalians. Though traditionally considered the earliest-diverging dinosauromorphs (reptiles closer to dinosaurs than to pterosaurs), fossils described in 2020 suggest that lagerpetids may instead be pterosauromorphs (closer to pterosaurs). Lagerpet... | Biology and health sciences | Other prehistoric archosaurs | Animals |
27158894 | https://en.wikipedia.org/wiki/Addiction | Addiction | Addiction is a neuropsychological disorder characterized by a persistent and intense urge to use a drug or engage in a behavior that produces natural reward, despite substantial harm and other negative consequences. Repetitive drug use can alter brain function in synapses similar to natural rewards like food or falling... | Biology and health sciences | Drugs and medication | null |
275712 | https://en.wikipedia.org/wiki/Cleanroom | Cleanroom | A cleanroom or clean room is an engineered space that maintains a very low concentration of airborne particulates. It is well isolated, well controlled from contamination, and actively cleansed. Such rooms are commonly needed for scientific research and in industrial production for all nanoscale processes, such as semi... | Physical sciences | Research methods | Basics and measurement |
275768 | https://en.wikipedia.org/wiki/Counting | Counting | Counting is the process of determining the number of elements of a finite set of objects; that is, determining the size of a set. The traditional way of counting consists of continually increasing a (mental or spoken) counter by a unit for every element of the set, in some order, while marking (or displacing) those ele... | Mathematics | Basics | null |
275863 | https://en.wikipedia.org/wiki/Amborella | Amborella | Amborella is a monotypic genus of understory shrubs or small trees endemic to the main island, Grande Terre, of New Caledonia in the southwest Pacific Ocean. The genus is the only member of the family Amborellaceae and the order Amborellales and contains a single species, Amborella trichopoda. Amborella is of great int... | Biology and health sciences | Amborellales | Plants |
275888 | https://en.wikipedia.org/wiki/Line-replaceable%20unit | Line-replaceable unit | A line-replaceable unit (LRU), lower line-replaceable unit (LLRU), line-replaceable component (LRC), or line-replaceable item (LRI) is a modular component of an airplane, ship or spacecraft (or any other manufactured device) that is designed to be replaced quickly at an operating location (1st line). The different line... | Technology | Aircraft components | null |
275978 | https://en.wikipedia.org/wiki/Camphor | Camphor | Camphor () is a waxy, colorless solid with a strong aroma. It is classified as a terpenoid and a cyclic ketone. It is found in the wood of the camphor laurel (Cinnamomum camphora), a large evergreen tree found in East Asia; and in the kapur tree (Dryobalanops sp.), a tall timber tree from South East Asia. It also occu... | Physical sciences | Terpenes and terpenoids | Chemistry |
275991 | https://en.wikipedia.org/wiki/Range%20of%20a%20function | Range of a function | In mathematics, the range of a function may refer to either of two closely related concepts:
the codomain of the function, or
the image of the function.
In some cases the codomain and the image of a function are the same set; such a function is called surjective or onto. For any non-surjective function the codomai... | Mathematics | Functions: General | null |
275992 | https://en.wikipedia.org/wiki/Caracal | Caracal | The caracal (Caracal caracal) () is a medium-sized wild cat native to Africa, the Middle East, Central Asia, and arid areas of Pakistan and northwestern India. It is characterised by a robust build, long legs, a short face, long tufted ears, relatively short tail, and long canine teeth. Its coat is uniformly reddish ta... | Biology and health sciences | Felines | Animals |
276041 | https://en.wikipedia.org/wiki/Palomino | Palomino | Palomino is a genetic color in horses, consisting of a gold coat and white mane and tail; the degree of whiteness can vary from bright white to yellow. The palomino color derived from the inter-breeding of Spanish horses with those from the United States. Genetically, the palomino color is created by a single allele o... | Biology and health sciences | Horses | Animals |
276054 | https://en.wikipedia.org/wiki/Hummingbird%20hawk-moth | Hummingbird hawk-moth | The hummingbird hawk-moth (Macroglossum stellatarum) is a species of hawk moth found across temperate regions of Eurasia. The species is named for its similarity to hummingbirds, as they feed on the nectar of tube-shaped flowers using their long proboscis while hovering in the air; this resemblance is an example of con... | Biology and health sciences | Lepidoptera | Animals |
276057 | https://en.wikipedia.org/wiki/Sphingidae | Sphingidae | The Sphingidae are a family of moths commonly called sphinx moths, also colloquially known as hawk moths, with many of their caterpillars known as hornworms. It includes about 1,450 species. It is best represented in the tropics, but species are found in every region. They are moderate to large in size and are distingu... | Biology and health sciences | Lepidoptera | Animals |
276083 | https://en.wikipedia.org/wiki/Wolf%20spider | Wolf spider | Wolf spiders are members of the family Lycosidae (), named for their robust and agile hunting skills and excellent eyesight. They live mostly in solitude, hunt alone, and usually do not spin webs. Some are opportunistic hunters, pouncing upon prey as they find it or chasing it over short distances; others wait for pass... | Biology and health sciences | Spiders | Animals |
276092 | https://en.wikipedia.org/wiki/Chanterelle | Chanterelle | Chanterelle is the common name of several species of fungi in the genera Cantharellus, Craterellus, Gomphus, and Polyozellus. They are orange, yellow or white, meaty and funnel-shaped. On the lower surface, most species have rounded, forked folds that run almost all the way down the stipe, which tapers down from the ca... | Biology and health sciences | Edible fungi | null |
276106 | https://en.wikipedia.org/wiki/Molar%20concentration | Molar concentration | Molar concentration (also called molarity, amount concentration or substance concentration) is a measure of the concentration of a chemical species, in particular, of a solute in a solution, in terms of amount of substance per unit volume of solution. In chemistry, the most commonly used unit for molarity is the number... | Physical sciences | Concentration | Basics and measurement |
276115 | https://en.wikipedia.org/wiki/Jumping%20spider | Jumping spider | Jumping spiders are a group of spiders that constitute the family Salticidae. , this family contained over 600 described genera and over 6,000 described species, making it the largest family of spiderscomprising 13% of spider species. Jumping spiders have some of the best vision among arthropods and use it in courtship... | Biology and health sciences | Spiders | Animals |
276294 | https://en.wikipedia.org/wiki/Goldschmidt%20classification | Goldschmidt classification | The Goldschmidt classification,
developed by Victor Goldschmidt (1888–1947), is a geochemical classification which groups the chemical elements within the Earth according to their preferred host phases into lithophile (rock-loving), siderophile (iron-loving), chalcophile (sulfide ore-loving or chalcogen-loving), and at... | Physical sciences | Geochemistry | Earth science |
276409 | https://en.wikipedia.org/wiki/Raspberry | Raspberry | The raspberry is the edible fruit of several plant species in the genus Rubus of the rose family, most of which are in the subgenus Idaeobatus. The name also applies to these plants themselves. Raspberries are perennial with woody stems.
World production of raspberries in 2022 was 947,852 tonnes, led by Russia with 2... | Biology and health sciences | Rosales | null |
276410 | https://en.wikipedia.org/wiki/Module%20%28mathematics%29 | Module (mathematics) | In mathematics, a module is a generalization of the notion of vector space in which the field of scalars is replaced by a (not necessarily commutative) ring. The concept of a module also generalizes the notion of an abelian group, since the abelian groups are exactly the modules over the ring of integers.
Like a vecto... | Mathematics | Algebra | null |
276504 | https://en.wikipedia.org/wiki/Engineered%20wood | Engineered wood | Engineered wood, also called mass timber, composite wood, man-made wood, or manufactured board, includes a range of derivative wood products which are manufactured by binding or fixing the strands, particles, fibres, or veneers or boards of wood, together with adhesives, or other methods of fixation to form composite m... | Technology | Building materials | null |
276544 | https://en.wikipedia.org/wiki/Ground%20sloth | Ground sloth | Ground sloths are a diverse group of extinct sloths in the mammalian superorder Xenarthra. They varied widely in size with the largest, belonging to genera Lestodon, Eremotherium and Megatherium, being around the size of elephants. Ground sloths represent a paraphyletic group, as living tree sloths are thought to have ... | Biology and health sciences | Xenarthra | Animals |
276589 | https://en.wikipedia.org/wiki/Rusty-spotted%20cat | Rusty-spotted cat | The rusty-spotted cat (Prionailurus rubiginosus) is one of the cat family's smallest members, of which historical records are known only from India and Sri Lanka. In 2012, it was also recorded in the western Terai of Nepal. Since 2016, the global wild population is listed as Near Threatened on the IUCN Red List as it i... | Biology and health sciences | Felines | Animals |
276610 | https://en.wikipedia.org/wiki/Fishing%20cat | Fishing cat | The fishing cat (Prionailurus viverrinus) is a medium-sized wild cat of South and Southeast Asia. It has a deep yellowish-grey fur with black lines and spots. Adults have a head-to-body length of , with a long tail. Males are larger than females, weighing , while females average . It lives mostly in the vicinity of we... | Biology and health sciences | Felines | Animals |
276745 | https://en.wikipedia.org/wiki/Homo%20ergaster | Homo ergaster | Homo ergaster is an extinct species or subspecies of archaic humans who lived in Africa in the Early Pleistocene. Whether H. ergaster constitutes a species of its own or should be subsumed into H. erectus is an ongoing and unresolved dispute within palaeoanthropology. Proponents of synonymisation typically designate H.... | Biology and health sciences | Homo | Biology |
276846 | https://en.wikipedia.org/wiki/Onchocerciasis | Onchocerciasis | Onchocerciasis, also known as river blindness, is a disease caused by infection with the parasitic worm Onchocerca volvulus. Symptoms include severe itching, bumps under the skin, and blindness. It is the second-most common cause of blindness due to infection, after trachoma.
The parasitic worm is spread by the bites ... | Biology and health sciences | Helminthic diseases and infestations | Health |
276881 | https://en.wikipedia.org/wiki/Extreme%20value%20theorem | Extreme value theorem | In calculus, the extreme value theorem states that if a real-valued function is continuous on the closed and bounded interval , then must attain a maximum and a minimum, each at least once.
That is, there exist numbers and in such that:
The extreme value theorem is more specific than the related boundedness the... | Mathematics | Real analysis | null |
276918 | https://en.wikipedia.org/wiki/Division%20sign | Division sign | The division sign () is a mathematical symbol consisting of a short horizontal line with a dot above and another dot below, used in Anglophone countries to indicate the operation of division. This usage, though widespread in some countries, is not universal and the symbol has a different meaning in other countries. I... | Mathematics | Basics | null |
277102 | https://en.wikipedia.org/wiki/Syndrome | Syndrome | A syndrome is a set of medical signs and symptoms which are correlated with each other and often associated with a particular disease or disorder. The word derives from the Greek σύνδρομον, meaning "concurrence". When a syndrome is paired with a definite cause this becomes a disease. In some instances, a syndrome is so... | Biology and health sciences | Miscellaneous | null |
277184 | https://en.wikipedia.org/wiki/Mathematical%20notation | Mathematical notation | Mathematical notation consists of using symbols for representing operations, unspecified numbers, relations, and any other mathematical objects and assembling them into expressions and formulas. Mathematical notation is widely used in mathematics, science, and engineering for representing complex concepts and propertie... | Mathematics | Basics | null |
277197 | https://en.wikipedia.org/wiki/Estrildidae | Estrildidae | Estrildidae, or estrildid finches, is a family of small seed-eating passerine birds of the Old World tropics and Australasia. They comprise species commonly known as munias, mannikins, firefinches, parrotfinches and waxbills. Despite the word "finch" being included in the common names of some species, they are not clos... | Biology and health sciences | Passerida | Animals |
277237 | https://en.wikipedia.org/wiki/Pumped-storage%20hydroelectricity | Pumped-storage hydroelectricity | Pumped-storage hydroelectricity (PSH), or pumped hydroelectric energy storage (PHES), is a type of hydroelectric energy storage used by electric power systems for load balancing.
A PSH system stores energy in the form of gravitational potential energy of water, pumped from a lower elevation reservoir to a higher eleva... | Technology | Energy storage | null |
277248 | https://en.wikipedia.org/wiki/Blinded%20experiment | Blinded experiment | In a blind or blinded experiment, information which may influence the participants of the experiment is withheld until after the experiment is complete. Good blinding can reduce or eliminate experimental biases that arise from a participants' expectations, observer's effect on the participants, observer bias, confirmat... | Physical sciences | Science basics | Basics and measurement |
277266 | https://en.wikipedia.org/wiki/Iron%20oxide | Iron oxide | An iron oxide is a chemical compound composed of iron and oxygen. Several iron oxides are recognized. Often they are non-stoichiometric. Ferric oxyhydroxides are a related class of compounds, perhaps the best known of which is rust.
Iron oxides and oxyhydroxides are widespread in nature and play an important role in ... | Physical sciences | Oxide salts | Chemistry |
277289 | https://en.wikipedia.org/wiki/Wind%20power | Wind power | Wind power is the use of wind energy to generate useful work. Historically, wind power was used by sails, windmills and windpumps, but today it is mostly used to generate electricity. This article deals only with wind power for electricity generation.
Today, wind power is generated almost completely with wind turbines,... | Technology | Energy | null |
277295 | https://en.wikipedia.org/wiki/Magnetite | Magnetite | Magnetite is a mineral and one of the main iron ores, with the chemical formula . It is one of the oxides of iron, and is ferrimagnetic; it is attracted to a magnet and can be magnetized to become a permanent magnet itself. With the exception of extremely rare native iron deposits, it is the most magnetic of all the na... | Physical sciences | Minerals | Earth science |
277353 | https://en.wikipedia.org/wiki/Pier | Pier | A pier is a raised structure that rises above a body of water and usually juts out from its shore, typically supported by piles or pillars, and provides above-water access to offshore areas. Frequent pier uses include fishing, boat docking and access for both passengers and cargo, and oceanside recreation. Bridges, b... | Technology | Coastal infrastructure | null |
277379 | https://en.wikipedia.org/wiki/Margin%20of%20error | Margin of error | The margin of error is a statistic expressing the amount of random sampling error in the results of a survey. The larger the margin of error, the less confidence one should have that a poll result would reflect the result of a census of the entire population. The margin of error will be positive whenever a population i... | Mathematics | Statistics | null |
277468 | https://en.wikipedia.org/wiki/Two-body%20problem | Two-body problem | In classical mechanics, the two-body problem is to calculate and predict the motion of two massive bodies that are orbiting each other in space. The problem assumes that the two bodies are point particles that interact only with one another; the only force affecting each object arises from the other one, and all other ... | Physical sciences | Classical mechanics | Physics |
277607 | https://en.wikipedia.org/wiki/Bull%20shark | Bull shark | The bull shark (Carcharhinus leucas), also known as the Zambezi shark (informally zambi) in Africa and Lake Nicaragua shark in Nicaragua, is a species of requiem shark commonly found worldwide in warm, shallow waters along coasts and in rivers. It is known for its aggressive nature, and presence mainly in warm, shallow... | Biology and health sciences | Sharks | Animals |
277608 | https://en.wikipedia.org/wiki/Ploceidae | Ploceidae | Ploceidae is a family of small passerine birds, many of which are called weavers, weaverbirds, weaver finches, or bishops. These names come from the nests of intricately woven vegetation created by birds in this family. In most recent classifications, the Ploceidae are a clade that excludes some birds that have histori... | Biology and health sciences | Passerida | null |
277641 | https://en.wikipedia.org/wiki/Strength%20of%20materials | Strength of materials | The field of strength of materials (also called mechanics of materials) typically refers to various methods of calculating the stresses and strains in structural members, such as beams, columns, and shafts. The methods employed to predict the response of a structure under loading and its susceptibility to various failu... | Physical sciences | Solid mechanics | null |
277663 | https://en.wikipedia.org/wiki/Open-source%20software | Open-source software | Open-source software (OSS) is computer software that is released under a license in which the copyright holder grants users the rights to use, study, change, and distribute the software and its source code to anyone and for any purpose. Open-source software may be developed in a collaborative, public manner. Open-sourc... | Technology | Computer software | null |
277702 | https://en.wikipedia.org/wiki/Electron%20diffraction | Electron diffraction | Electron diffraction is a generic term for phenomena associated with changes in the direction of electron beams due to elastic interactions with atoms. It occurs due to elastic scattering, when there is no change in the energy of the electrons. The negatively charged electrons are scattered due to Coulomb forces when t... | Physical sciences | Quantum mechanics | Physics |
277709 | https://en.wikipedia.org/wiki/Vitellaria | Vitellaria | Vitellaria paradoxa (formerly Butyrospermum parkii), commonly known as shea tree, shi tree (, also ), or vitellaria, is a tree of the family Sapotaceae. It is the only species in the genus Vitellaria, and is indigenous to Africa.
The shea fruit consists of a thin, tart, nutritious pulp that surrounds a relatively larg... | Biology and health sciences | Nuts | Plants |
277833 | https://en.wikipedia.org/wiki/Phoneutria | Phoneutria | Phoneutria is a genus of spiders in the family Ctenidae. They are mainly found in northern South America, with one species in Central America. Members of the genus are commonly referred to as Brazilian wandering spiders. Other English names include armed spiders (armadeiras in Brazilian Portuguese) and banana spiders (... | Biology and health sciences | Spiders | Animals |
277980 | https://en.wikipedia.org/wiki/Man%20o%27%20War | Man o' War | Man o' War (March 29, 1917 – November 1, 1947) was an American Thoroughbred racehorse who is widely regarded as one of the greatest racehorses of all time. Several sports publications, including The Blood-Horse, Sports Illustrated, and the Associated Press, voted Man o' War as the best American racehorse of the 20th ce... | Biology and health sciences | Individual animals | Animals |
278003 | https://en.wikipedia.org/wiki/Mountain%20zebra | Mountain zebra | The mountain zebra (Equus zebra) is a zebra species in the family Equidae, native to southwestern Africa. There are two subspecies, the Cape mountain zebra (E. z. zebra) found in South Africa and Hartmann's mountain zebra (E. z. hartmannae) found in south-western Angola and Namibia.
Taxonomy
The mountain zebra compris... | Biology and health sciences | Equidae | Animals |
278366 | https://en.wikipedia.org/wiki/Moment%20%28physics%29 | Moment (physics) | A moment is a mathematical expression involving the product of a distance and a physical quantity such as a force or electric charge. Moments are usually defined with respect to a fixed reference point and refer to physical quantities located some distance from the reference point. For example, the moment of force, oft... | Physical sciences | Classical mechanics | Physics |
278490 | https://en.wikipedia.org/wiki/Australian%20funnel-web%20spider | Australian funnel-web spider | Atracidae is a family of mygalomorph spiders, commonly known as Australian funnel-web spiders or atracids. It has been included as a subfamily of the Hexathelidae, but is now recognised as a separate family. All members of the family are native to Australia. Atracidae consists of three genera: Atrax, Hadronyche, and Il... | Biology and health sciences | Spiders | Animals |
279350 | https://en.wikipedia.org/wiki/Electric%20vehicle | Electric vehicle | An electric vehicle (EV) is a vehicle whose propulsion is powered fully or mostly by electricity. EVs include road and rail vehicles, electric boats and underwater vessels, electric aircraft and electric spacecraft.
Early electric vehicles first came into existence in the late 19th century, when the Second Industrial ... | Technology | Basics_7 | null |
279624 | https://en.wikipedia.org/wiki/Magnetic%20flux%20quantum | Magnetic flux quantum | The magnetic flux, represented by the symbol , threading some contour or loop is defined as the magnetic field multiplied by the loop area , i.e. . Both and can be arbitrary, meaning that the flux can be as well but increments of flux can be quantized. The wave function can be multivalued as it happens in the Aharo... | Physical sciences | Physical constants | Physics |
280356 | https://en.wikipedia.org/wiki/White-eye | White-eye | The white-eyes are a family, Zosteropidae, of small passerine birds native to tropical, subtropical and temperate Sub-Saharan Africa, southern and eastern Asia, and Australasia. White-eyes inhabit most tropical islands in the Indian Ocean, the western Pacific Ocean, and the Gulf of Guinea. Discounting some widespread m... | Biology and health sciences | Passerida | Animals |
280509 | https://en.wikipedia.org/wiki/Fire%20hydrant | Fire hydrant | A fire hydrant, fireplug, firecock (archaic), hydrant riser or Johnny Pump is a connection point by which firefighters can tap into a water supply. It is a component of active fire protection. Underground fire hydrants have been used in Europe and Asia since at least the 18th century. Above-ground pillar-type hydrants ... | Technology | Fire protection | null |
280582 | https://en.wikipedia.org/wiki/Numerical%20digit | Numerical digit | A numerical digit (often shortened to just digit) or numeral is a single symbol used alone (such as "1"), or in combinations (such as "15"), to represent numbers in positional notation, such as the common base 10. The name "digit" originates from the Latin digiti meaning fingers.
For any numeral system with an integer... | Mathematics | Basics | null |
280911 | https://en.wikipedia.org/wiki/Confidence%20interval | Confidence interval | Informally, in frequentist statistics, a confidence interval (CI) is an interval which is expected to typically contain the parameter being estimated. More specifically, given a confidence level (95% and 99% are typical values), a CI is a random interval which contains the parameter being estimated % of the time. The ... | Mathematics | Statistics | null |
19826952 | https://en.wikipedia.org/wiki/Protostome | Protostome | Protostomia () is the clade of animals once thought to be characterized by the formation of the organism's mouth before its anus during embryonic development. This nature has since been discovered to be extremely variable among Protostomia's members, although the reverse is typically true of its sister clade, Deuterost... | Biology and health sciences | General classifications | Animals |
19827221 | https://en.wikipedia.org/wiki/Arthropod | Arthropod | Arthropods ( ) are invertebrates in the phylum Arthropoda. They possess an exoskeleton with a cuticle made of chitin, often mineralised with calcium carbonate, a body with differentiated (metameric) segments, and paired jointed appendages. In order to keep growing, they must go through stages of moulting, a process by ... | Biology and health sciences | Biology | null |
19827372 | https://en.wikipedia.org/wiki/Brachiopod | Brachiopod | Brachiopods (), phylum Brachiopoda, are a phylum of animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs. Brachiopod valves are hinged at the rear end, while the front can be opened for feeding or closed for protection. Two major categories ... | Biology and health sciences | Lophotrochozoa | Animals |
19827803 | https://en.wikipedia.org/wiki/Nematode | Nematode | The nematodes ( or ; ; ), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum inhabit a broad range of environments. Most species are free-living, feeding on microorganisms, but many are parasitic. Parasitic worms (helminths) are the cause of soil-transmitted helminthiases.
They are classifie... | Biology and health sciences | Ecdysozoa | null |
19828134 | https://en.wikipedia.org/wiki/Plant | Plant | Plants are the eukaryotes that form the kingdom Plantae; they are predominantly photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with cyanobacteria to produce sugars from carbon dioxide and water, using the green pigment chlorophyll. Exceptions are pa... | Biology and health sciences | Science and medicine | null |
6354378 | https://en.wikipedia.org/wiki/Drug%20delivery | Drug delivery | Drug delivery refers to approaches, formulations, manufacturing techniques, storage systems, and technologies involved in transporting a pharmaceutical compound to its target site to achieve a desired therapeutic effect. Principles related to drug preparation, route of administration, site-specific targeting, metabolis... | Biology and health sciences | General concepts_2 | Health |
487841 | https://en.wikipedia.org/wiki/Cerebrum | Cerebrum | The cerebrum (: cerebra), telencephalon or endbrain is the largest part of the brain, containing the cerebral cortex (of the two cerebral hemispheres) as well as several subcortical structures, including the hippocampus, basal ganglia, and olfactory bulb. In the human brain, the cerebrum is the uppermost region of the ... | Biology and health sciences | Nervous system | null |
487859 | https://en.wikipedia.org/wiki/Directional%20derivative | Directional derivative | In multivariable calculus, the directional derivative measures the rate at which a function changes in a particular direction at a given point.
The directional derivative of a multivariable differentiable (scalar) function along a given vector v at a given point x intuitively represents the instantaneous rate of chang... | Mathematics | Multivariable and vector calculus | null |
487896 | https://en.wikipedia.org/wiki/Stickleback | Stickleback | The sticklebacks are a family of ray-finned fishes, the Gasterosteidae which have a Holarctic distribution in fresh, brackish and marine waters. They were thought to be related to the pipefish and seahorses but are now thought to be more closely related to the eelpouts and sculpins.
Taxonomy
The stickleback family, G... | Biology and health sciences | Fishes | null |
488341 | https://en.wikipedia.org/wiki/Homo | Homo | Homo () is a genus of great ape (family Hominidae) that emerged from the genus Australopithecus and encompasses only a single extant species, Homo sapiens (modern humans), along with a number of extinct species (collectively called archaic humans) classified as either ancestral or closely related to modern humans; thes... | Biology and health sciences | Homo | Biology |
488361 | https://en.wikipedia.org/wiki/Mining%20engineering | Mining engineering | Mining in the engineering discipline is the extraction of minerals from the ground. Mining engineering is associated with many other disciplines, such as mineral processing, exploration, excavation, geology, metallurgy, geotechnical engineering and surveying. A mining engineer may manage any phase of mining operations,... | Technology | Disciplines | null |
488682 | https://en.wikipedia.org/wiki/Bicycle-sharing%20system | Bicycle-sharing system | A bicycle-sharing system, bike share program, public bicycle scheme, or public bike share (PBS) scheme, is a shared transport service where bicycles are available for shared use by individuals at low cost.
The programmes themselves include both docking and dockless systems, where docking systems allow users to rent a ... | Technology | Road infrastructure | null |
488743 | https://en.wikipedia.org/wiki/Carbon%20monoxide%20poisoning | Carbon monoxide poisoning | Carbon monoxide poisoning typically occurs from breathing in carbon monoxide (CO) at excessive levels. Symptoms are often described as "flu-like" and commonly include headache, dizziness, weakness, vomiting, chest pain, and confusion. Large exposures can result in loss of consciousness, arrhythmias, seizures, or death.... | Biology and health sciences | Types | Health |
488748 | https://en.wikipedia.org/wiki/Reionization | Reionization | In the fields of Big Bang theory and cosmology, reionization is the process that caused electrically neutral atoms in the universe to reionize after the lapse of the "dark ages".
Detecting and studying the reionization process is challenging but multiple avenues have been pursued.
This reionization was driven by the ... | Physical sciences | Physical cosmology | Astronomy |
488815 | https://en.wikipedia.org/wiki/Utility%20frequency | Utility frequency | The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the nominal frequency of the oscillations of alternating current (AC) in a wide area synchronous grid transmitted from a power station to the end-user. In large parts of the world this is 50 Hz, although in the Amer... | Technology | Concepts | null |
488945 | https://en.wikipedia.org/wiki/Zebra%20mussel | Zebra mussel | The zebra mussel (Dreissena polymorpha) is a small freshwater mussel, an aquatic bivalve mollusk in the family Dreissenidae. The species originates from the lakes of southern Russia and Ukraine, but has been accidentally introduced to numerous other areas and has become an invasive species in many countries worldwide. ... | Biology and health sciences | Bivalvia | Animals |
489079 | https://en.wikipedia.org/wiki/Swiftlet | Swiftlet | Swiftlets are birds from the four genera Aerodramus, Collocalia, Hydrochous and Schoutedenapus, which form the tribe Collocaliini within the swift family Apodidae. The group contains around thirty species mostly confined to southern Asia, south Pacific islands, and northeastern Australia, all within the tropical and su... | Biology and health sciences | Apodiformes | Animals |
489173 | https://en.wikipedia.org/wiki/Peripheral%20artery%20disease | Peripheral artery disease | Peripheral artery disease (PAD) is a vascular disorder that causes abnormal narrowing of arteries other than those that supply the heart or brain. PAD can happen in any blood vessel, but it is more common in the legs than the arms.
When narrowing occurs in the heart, it is called coronary artery disease (CAD), and in ... | Biology and health sciences | Cardiovascular disease | Health |
489642 | https://en.wikipedia.org/wiki/Three-spined%20stickleback | Three-spined stickleback | The three-spined stickleback (Gasterosteus aculeatus) is a fish native to most inland and coastal waters north of 30°N. It has long been a subject of scientific study for many reasons. It shows great morphological variation throughout its range, ideal for questions about evolution and population genetics. Many populati... | Biology and health sciences | Acanthomorpha | Animals |
489658 | https://en.wikipedia.org/wiki/Nd%3AYAG%20laser | Nd:YAG laser | Nd:YAG (neodymium-doped yttrium aluminum garnet; Nd:Y3Al5O12) is a crystal that is used as a lasing medium for solid-state lasers. The dopant, neodymium in the +3 oxidation state, Nd(III), typically replaces a small fraction (1%) of the yttrium ions in the host crystal structure of the yttrium aluminum garnet (YAG), s... | Technology | Lasers | null |
490225 | https://en.wikipedia.org/wiki/Chimaera | Chimaera | Chimaeras are cartilaginous fish in the order Chimaeriformes (), known informally as ghost sharks, rat fish, spookfish, or rabbit fish; the last three names are not to be confused with rattails, Opisthoproctidae, or Siganidae, respectively.
At one time a "diverse and abundant" group (based on the fossil record), their... | Biology and health sciences | Fishes | null |
490442 | https://en.wikipedia.org/wiki/Geometer%20moth | Geometer moth | The geometer moths are moths belonging to the family Geometridae of the insect order Lepidoptera, the moths and butterflies. Their scientific name derives from the Ancient Greek geo γεω (derivative form of or "the earth"), and metron "measure" in reference to the way their larvae, or inchworms, appear to measure the... | Biology and health sciences | Lepidoptera | null |
490528 | https://en.wikipedia.org/wiki/VLC%20media%20player | VLC media player | VLC media player (previously the VideoLAN Client and commonly known as simply VLC) is a free and open-source, portable, cross-platform media player software and streaming media server developed by the VideoLAN project. VLC is available for desktop operating systems and mobile platforms, such as Android, iOS and iPadOS.... | Technology | Multimedia_2 | null |
490620 | https://en.wikipedia.org/wiki/Human%20brain | Human brain | The human brain is the central organ of the human nervous system, and with the spinal cord, comprises the central nervous system. It consists of the cerebrum, the brainstem and the cerebellum. The brain controls most of the activities of the body, processing, integrating, and coordinating the information it receives fr... | Biology and health sciences | Human anatomy | null |
491164 | https://en.wikipedia.org/wiki/Lima%20bean | Lima bean | A lima bean (Phaseolus lunatus), also commonly known as butter bean, sieva bean, double bean or Madagascar bean, is a legume grown for its edible seeds or beans.
Origin and uses
Phaseolus lunatus is found in Meso- and South America. Two gene pools of cultivated lima beans point to independent domestication events. The... | Biology and health sciences | Fabales | null |
8334453 | https://en.wikipedia.org/wiki/Stadion%20%28unit%29 | Stadion (unit) | The stadion (plural stadia, ; latinized as stadium), also anglicized as stade, was an ancient Greek unit of length, consisting of 600 Ancient Greek feet (podes). Its exact length is unknown today; historians estimate it at between 150 m and 210 m.
Calculations
According to Herodotus, one stadium was equal to 600 Greek... | Physical sciences | Other | Basics and measurement |
8335148 | https://en.wikipedia.org/wiki/Unbarred%20spiral%20galaxy | Unbarred spiral galaxy | An unbarred spiral galaxy is a type of spiral galaxy without a central bar, or one that is not a barred spiral galaxy. It is designated with an SA in the galaxy morphological classification scheme. A nearby example of an unbarred spiral is the Triangulum Galaxy.
Barless spiral galaxies are one of three general types ... | Physical sciences | Galaxy classification | Astronomy |
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