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215419 | https://en.wikipedia.org/wiki/Giant%20squid | Giant squid | The giant squid (Architeuthis dux) is a species of deep-ocean dwelling squid in the family Architeuthidae. It can grow to a tremendous size, offering an example of abyssal gigantism: recent estimates put the maximum size at around for females and for males, from the posterior fins to the tip of the two long tentacles... | Biology and health sciences | Cephalopods | Animals |
215428 | https://en.wikipedia.org/wiki/Motacillidae | Motacillidae | The wagtails, longclaws, and pipits are a family, Motacillidae, of small passerine birds with medium to long tails. Around 70 species occur in five genera. The longclaws are entirely restricted to the Afrotropics, and the wagtails are predominantly found in Europe, Africa, and Asia, with two species migrating and breed... | Biology and health sciences | Passerida | Animals |
215506 | https://en.wikipedia.org/wiki/Red%20kangaroo | Red kangaroo | The red kangaroo (Osphranter rufus) is the largest of all kangaroos, the largest terrestrial mammal native to Australia, and the largest extant marsupial. It is found across mainland Australia, except for the more fertile areas, such as southern Western Australia, the eastern and southeastern coasts, and the rainforest... | Biology and health sciences | Diprotodontia | Animals |
215515 | https://en.wikipedia.org/wiki/Longclaw | Longclaw | The longclaws are a genus, Macronyx, of small African passerine birds in the family Motacillidae.
Longclaws are slender, often colorful, ground-feeding insectivores of open country. They are ground nesters, laying up to four speckled eggs. They are named for their unusually long hind claws, which are thought to help i... | Biology and health sciences | Passerida | Animals |
215567 | https://en.wikipedia.org/wiki/Pink | Pink | Pink is a pale tint of red, the color of the pink flower. It was first used as a color name in the late 17th century. According to surveys in Europe and the United States, pink is the color most often associated with charm, politeness, sensitivity, tenderness, sweetness, childhood, femininity, and romance. A combinatio... | Physical sciences | Color terms | null |
215706 | https://en.wikipedia.org/wiki/Supermassive%20black%20hole | Supermassive black hole | A supermassive black hole (SMBH or sometimes SBH) is the largest type of black hole, with its mass being on the order of hundreds of thousands, or millions to billions, of times the mass of the Sun (). Black holes are a class of astronomical objects that have undergone gravitational collapse, leaving behind spheroidal ... | Physical sciences | Basics_3 | null |
215754 | https://en.wikipedia.org/wiki/Newton-metre | Newton-metre | The newton-metre or newton-meter (also non-hyphenated, newton metre or newton meter; symbol N⋅m or N m) is the unit of torque (also called ) in the International System of Units (SI). One newton-metre is equal to the torque resulting from a force of one newton applied perpendicularly to the end of a moment arm that is ... | Physical sciences | Torque | Basics and measurement |
215844 | https://en.wikipedia.org/wiki/Pulp%20%28paper%29 | Pulp (paper) | Pulp is a fibrous lignocellulosic material prepared by chemically, semi-chemically or mechanically producing cellulosic fibers from wood, fiber crops, waste paper, or rags. Mixed with water and other chemicals or plant-based additives, pulp is the major raw material used in papermaking and the industrial production of ... | Technology | Materials | null |
215909 | https://en.wikipedia.org/wiki/Electricity%20market | Electricity market | An electricity market is a system that enables the exchange of electrical energy, through an electrical grid. Historically, electricity has been primarily sold by companies that operate electric generators, and purchased by consumers or electricity retailers.
The electric power industry began in the late 19th century ... | Technology | Electricity transmission and distribution | null |
215948 | https://en.wikipedia.org/wiki/Mergini | Mergini | The sea ducks (Mergini) are a tribe of the duck subfamily of birds, the Anatinae. The taxonomy of this group is incomplete. Some authorities separate the group as a subfamily, while others remove some genera. Most species within the group spend their winters near coastal waters. Many species have developed specialized ... | Biology and health sciences | Anseriformes | Animals |
215987 | https://en.wikipedia.org/wiki/Iron%28III%29%20oxide | Iron(III) oxide | Iron(III) oxide or ferric oxide is the inorganic compound with the formula . It occurs in nature as the mineral hematite, which serves as the primary source of iron for the steel industry. It is also known as red iron oxide, especially when used in pigments.
It is one of the three main oxides of iron, the other two be... | Physical sciences | Oxide salts | Chemistry |
216000 | https://en.wikipedia.org/wiki/Hemimorphite | Hemimorphite | Hemimorphite is the chemical compound Zn4(Si2O7)(OH)2·H2O, a component of mineral calamine. It is a silicate mineral which, together with smithsonite (ZnCO3), has been historically mined from the upper parts of zinc and lead ores. Both compounds were originally believed to be the same mineral and classified as calamine... | Physical sciences | Silicate minerals | Earth science |
216021 | https://en.wikipedia.org/wiki/Periscope | Periscope | A periscope is an instrument for observation over, around or through an object, obstacle or condition that prevents direct line-of-sight observation from an observer's current position.
In its simplest form, it consists of an outer case with mirrors at each end set parallel to each other at a 45° angle. This form of p... | Technology | Optical instruments | null |
216049 | https://en.wikipedia.org/wiki/Adaptive%20optics | Adaptive optics | Adaptive optics (AO) is a technique of precisely deforming a mirror in order to compensate for light distortion. It is used in astronomical telescopes and laser communication systems to remove the effects of atmospheric distortion, in microscopy, optical fabrication and in retinal imaging systems to reduce optical aber... | Technology | Telescope | null |
216087 | https://en.wikipedia.org/wiki/Quokka | Quokka | The quokka () (Setonix brachyurus) is a small macropod about the size of a domestic cat. It is the only member of the genus Setonix. Like other marsupials in the macropod family (such as kangaroos and wallabies), the quokka is herbivorous and mainly nocturnal.
The quokka's range is a small area of southwestern Austral... | Biology and health sciences | Diprotodontia | Animals |
216104 | https://en.wikipedia.org/wiki/Protein%20engineering | Protein engineering | Protein engineering is the process of developing useful or valuable proteins through the design and production of unnatural polypeptides, often by altering amino acid sequences found in nature. It is a young discipline, with much research taking place into the understanding of protein folding and recognition for protei... | Technology | Biotechnology | null |
216143 | https://en.wikipedia.org/wiki/Sustainable%20agriculture | Sustainable agriculture | Sustainable agriculture is farming in sustainable ways meeting society's present food and textile needs, without compromising the ability for current or future generations to meet their needs. It can be based on an understanding of ecosystem services. There are many methods to increase the sustainability of agricultur... | Technology | Forms | null |
216174 | https://en.wikipedia.org/wiki/Homeothermy | Homeothermy | Homeothermy, homothermy or homoiothermy is thermoregulation that maintains a stable internal body temperature regardless of external influence. This internal body temperature is often, though not necessarily, higher than the immediate environment (from Greek ὅμοιος homoios "similar" and θέρμη thermē "heat"). Homeotherm... | Biology and health sciences | Basics | Biology |
216187 | https://en.wikipedia.org/wiki/Incineration | Incineration | Incineration is a waste treatment process that involves the combustion of substances contained in waste materials. Industrial plants for waste incineration are commonly referred to as waste-to-energy facilities. Incineration and other high-temperature waste treatment systems are described as "thermal treatment". Incine... | Technology | Industry: General | null |
216211 | https://en.wikipedia.org/wiki/Agroecology | Agroecology | Agroecology is an academic discipline that studies ecological processes applied to agricultural production systems. Bringing ecological principles to bear can suggest new management approaches in agroecosystems. The term can refer to a science, a movement, or an agricultural practice. Agroecologists study a variety of ... | Technology | Academic disciplines | null |
216216 | https://en.wikipedia.org/wiki/Conservation%20biology | Conservation biology | Conservation biology is the study of the conservation of nature and of Earth's biodiversity with the aim of protecting species, their habitats, and ecosystems from excessive rates of extinction and the erosion of biotic interactions. It is an interdisciplinary subject drawing on natural and social sciences, and the pra... | Biology and health sciences | Ecology | Biology |
216260 | https://en.wikipedia.org/wiki/Horticulture | Horticulture | Horticulture is the art and science of growing ornamental plants, fruits, vegetables, flowers, trees and shrubs. Horticulture is commonly associated with the more professional and technical aspects of plant cultivation on a smaller and more controlled scale than agronomy. There are various divisions of horticulture bec... | Technology | Basics_2 | null |
19109106 | https://en.wikipedia.org/wiki/Baiji | Baiji | The baiji (Lipotes vexillifer), is a probably extinct species of freshwater dolphin native to the Yangtze river system in China. It is thought to be the first dolphin species driven to extinction due to the impact of humans. This dolphin is listed as "critically endangered: possibly extinct" by the IUCN, has not been s... | Biology and health sciences | Toothed whale | Animals |
19119938 | https://en.wikipedia.org/wiki/Holly | Holly | Ilex () or holly is a genus of over 570 species of flowering plants in the family Aquifoliaceae, and the only living genus in that family. Ilex has the most species of any woody dioecious angiosperm genus. The species are evergreen or deciduous trees, shrubs, and climbers from tropics to temperate zones worldwide. The ... | Biology and health sciences | Aquifoliales | Plants |
10058771 | https://en.wikipedia.org/wiki/Gossypium%20hirsutum | Gossypium hirsutum | Gossypium hirsutum, also known as upland cotton or Mexican cotton, is the most widely planted species of cotton in the world. Globally, about 90% of all cotton production is of cultivars derived from this species. In the United States, the world's largest exporter of cotton, it constitutes approximately 95% of all cott... | Biology and health sciences | Malvales | Plants |
2417230 | https://en.wikipedia.org/wiki/Sound%20recording%20and%20reproduction | Sound recording and reproduction | Sound recording and reproduction is the electrical, mechanical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects. The two main classes of sound recording technology are analog recording and digital recording.
Acoustic analog recordin... | Technology | Media and communication | null |
2418285 | https://en.wikipedia.org/wiki/Troilite | Troilite | Troilite () is a rare iron sulfide mineral with the simple formula of FeS. It is the iron-rich endmember of the pyrrhotite group. Pyrrhotite has the formula Fe(1-x)S (x = 0 to 0.2) which is iron deficient. As troilite lacks the iron deficiency which gives pyrrhotite its characteristic magnetism, troilite is non-magneti... | Physical sciences | Minerals | Earth science |
2418699 | https://en.wikipedia.org/wiki/Pipefish | Pipefish | Pipefishes or pipe-fishes (Syngnathinae) are a subfamily of small fishes, which, together with the seahorses and seadragons (Phycodurus and Phyllopteryx), form the family Syngnathidae.
Description
Pipefish look like straight-bodied seahorses with tiny mouths. The name is derived from the peculiar form of the snout, w... | Biology and health sciences | Acanthomorpha | Animals |
15161047 | https://en.wikipedia.org/wiki/Basket%20star | Basket star | The Euryalina are a suborder of brittle stars, which includes large species with either branching arms (called "basket stars") or long and curling arms (called "snake stars"). It is sometimes listed as the order Euryalida.
Characteristics
Many of the species in this order have characteristic repeatedly branched arms ... | Biology and health sciences | Echinoderms | Animals |
14080493 | https://en.wikipedia.org/wiki/Grafting | Grafting | Grafting or graftage is a horticultural technique whereby tissues of plants are joined so as to continue their growth together. The upper part of the combined plant is called the scion () while the lower part is called the rootstock. The success of this joining requires that the vascular tissues grow together. The natu... | Technology | Horticulture | null |
7783929 | https://en.wikipedia.org/wiki/Horses%20in%20warfare | Horses in warfare | The first evidence of horses in warfare dates from Eurasia between 4000 and 3000 BC. A Sumerian illustration of warfare from 2500 BC depicts some type of equine pulling wagons. By 1600 BC, improved harness and chariot designs made chariot warfare common throughout the Ancient Near East, and the earliest written trainin... | Technology | Military technology: General | null |
7788156 | https://en.wikipedia.org/wiki/Signature%20%28logic%29 | Signature (logic) | In logic, especially mathematical logic, a signature lists and describes the non-logical symbols of a formal language. In universal algebra, a signature lists the operations that characterize an algebraic structure. In model theory, signatures are used for both purposes. They are rarely made explicit in more philosoph... | Mathematics | Model theory | null |
18092646 | https://en.wikipedia.org/wiki/Geologic%20record | Geologic record | The geologic record in stratigraphy, paleontology and other natural sciences refers to the entirety of the layers of rock strata. That is, deposits laid down by volcanism or by deposition of sediment derived from weathering detritus (clays, sands etc.). This includes all its fossil content and the information it yields... | Physical sciences | Geology: General | Earth science |
91100 | https://en.wikipedia.org/wiki/Michelson%E2%80%93Morley%20experiment | Michelson–Morley experiment | The Michelson–Morley experiment was an attempt to measure the motion of the Earth relative to the luminiferous aether, a supposed medium permeating space that was thought to be the carrier of light waves. The experiment was performed between April and July 1887 by American physicists Albert A. Michelson and Edward W. ... | Physical sciences | Theory of relativity | null |
91127 | https://en.wikipedia.org/wiki/Fermat%20number | Fermat number | In mathematics, a Fermat number, named after Pierre de Fermat (1607–1665), the first known to have studied them, is a positive integer of the form: where n is a non-negative integer. The first few Fermat numbers are: 3, 5, 17, 257, 65537, 4294967297, 18446744073709551617, 340282366920938463463374607431768211457, ... .
... | Mathematics | Prime numbers | null |
91173 | https://en.wikipedia.org/wiki/Axial%20tilt | Axial tilt | In astronomy, axial tilt, also known as obliquity, is the angle between an object's rotational axis and its orbital axis, which is the line perpendicular to its orbital plane; equivalently, it is the angle between its equatorial plane and orbital plane. It differs from orbital inclination.
At an obliquity of 0 degrees... | Physical sciences | Planetary science | Astronomy |
91191 | https://en.wikipedia.org/wiki/Maintenance | Maintenance | The technical meaning of maintenance involves functional checks, servicing, repairing or replacing of necessary devices, equipment, machinery, building infrastructure and supporting utilities in industrial, business, and residential installations. Over time, this has come to include multiple wordings that describe vari... | Technology | General | null |
91420 | https://en.wikipedia.org/wiki/Existential%20quantification | Existential quantification | In predicate logic, an existential quantification is a type of quantifier, a logical constant which is interpreted as "there exists", "there is at least one", or "for some". It is usually denoted by the logical operator symbol ∃, which, when used together with a predicate variable, is called an existential quantifier (... | Mathematics | Mathematical logic | null |
91983 | https://en.wikipedia.org/wiki/Willow | Willow | Willows, also called sallows and osiers, of the genus Salix, comprise around 350 species (plus numerous hybrids) of typically deciduous trees and shrubs, found primarily on moist soils in cold and temperate regions.
Most species are known as willow, but some narrow-leaved shrub species are called osier, and some broad... | Biology and health sciences | Malpighiales | null |
92171 | https://en.wikipedia.org/wiki/Webcam | Webcam | A webcam is a video camera which is designed to record or stream to a computer or computer network. They are primarily used in video telephony, live streaming and social media, and security. Webcams can be built-in computer hardware or peripheral devices, and are commonly connected to a device using USB or wireless pro... | Technology | User interface | null |
92236 | https://en.wikipedia.org/wiki/Electron%20transport%20chain | Electron transport chain | An electron transport chain (ETC) is a series of protein complexes and other molecules which transfer electrons from electron donors to electron acceptors via redox reactions (both reduction and oxidation occurring simultaneously) and couples this electron transfer with the transfer of protons (H+ ions) across a membra... | Biology and health sciences | Metabolic processes | Biology |
699235 | https://en.wikipedia.org/wiki/Square%20foot | Square foot | The square foot (; abbreviated sq ft, sf, or ft2; also denoted by '2 and ⏍, also known as "squeet") is an imperial unit and U.S. customary unit (non-SI, non-metric) of area, used mainly in the United States, Canada, the United Kingdom, Bangladesh, India, Nepal, Pakistan, Ghana, Liberia, Malaysia, Myanmar, Singapore and... | Physical sciences | Area | Basics and measurement |
699689 | https://en.wikipedia.org/wiki/Polaron | Polaron | A polaron is a quasiparticle used in condensed matter physics to understand the interactions between electrons and atoms in a solid material. The polaron concept was proposed by Lev Landau in 1933 and Solomon Pekar in 1946 to describe an electron moving in a dielectric crystal where the atoms displace from their equili... | Physical sciences | Basics_2 | Physics |
699928 | https://en.wikipedia.org/wiki/Rainbow%20Bridge%20%28Niagara%20Falls%29 | Rainbow Bridge (Niagara Falls) | The Niagara Falls International Rainbow Bridge, commonly known as the Rainbow Bridge, is a steel arch bridge across the Niagara River, connecting the cities of Niagara Falls, New York, United States, and Niagara Falls, Ontario, Canada.
Construction
The Rainbow Bridge was built near the site of the earlier Honeymoon Br... | Technology | Bridges | null |
699935 | https://en.wikipedia.org/wiki/Rainbow%20Bridge%20%28Tokyo%29 | Rainbow Bridge (Tokyo) | The is a suspension bridge crossing northern Tokyo Bay between Shibaura Pier and the Odaiba waterfront development in Minato, Tokyo, Japan.
It is named Tōkyō Kō Renrakukyō (東京港連絡橋) as the official name in Japanese.
It was built by Kawasaki Heavy Industries, with construction starting in 1987 and completed in 1993. T... | Technology | Bridges | null |
700154 | https://en.wikipedia.org/wiki/WKB%20approximation | WKB approximation | In mathematical physics, the WKB approximation or WKB method is a method for finding approximate solutions to linear differential equations with spatially varying coefficients. It is typically used for a semiclassical calculation in quantum mechanics in which the wavefunction is recast as an exponential function, semi... | Physical sciences | Quantum mechanics | Physics |
700633 | https://en.wikipedia.org/wiki/Dram%20%28unit%29 | Dram (unit) | The dram (alternative British spelling drachm; apothecary symbol ʒ or ℨ; abbreviated dr) is a unit of mass in the avoirdupois system, and both a unit of mass and a unit of volume in the apothecaries' system. It was originally both a coin and a weight in ancient Greece. The unit of volume is more correctly called a flui... | Physical sciences | Mass and weight | Basics and measurement |
701188 | https://en.wikipedia.org/wiki/Quantum%20vacuum%20state | Quantum vacuum state | In quantum field theory, the quantum vacuum state (also called the quantum vacuum or vacuum state) is the quantum state with the lowest possible energy. Generally, it contains no physical particles. The term zero-point field is sometimes used as a synonym for the vacuum state of a quantized field which is completely in... | Physical sciences | Quantum mechanics | Physics |
701610 | https://en.wikipedia.org/wiki/Zebroid | Zebroid | A zebroid is the offspring of any cross between a zebra and any other equine to create a hybrid. In most cases, the sire is a zebra stallion but not every time. The offspring of a donkey sire and zebra dam, called a donkra, and the offspring of a horse sire and a zebra dam, called a hebra, do exist, but are rare and ar... | Biology and health sciences | Hybrids | Animals |
703058 | https://en.wikipedia.org/wiki/Aircraft%20flight%20control%20system | Aircraft flight control system | A conventional fixed-wing aircraft flight control system (AFCS) consists of flight control surfaces, the respective cockpit controls, connecting linkages, and the necessary operating mechanisms to control an aircraft's direction in flight. Aircraft engine controls are also considered flight controls as they change spee... | Technology | Aircraft components | null |
703078 | https://en.wikipedia.org/wiki/Twill | Twill | Twill is a type of textile weave with a pattern of parallel, diagonal ribs. It is one of three fundamental types of weave, along with plain weave and satin. It is made by passing the weft thread over one or more warp threads then under two or more warp threads and so on, with a "step", or offset, between rows to create... | Technology | Weaving | null |
703648 | https://en.wikipedia.org/wiki/Mumbai%20Metro | Mumbai Metro | The Mumbai Metro is a rapid transit system serving the city of Mumbai and the wider Mumbai Metropolitan Region in Maharashtra, India.
While the Maharashtra Metro Rail Corporation Limited is responsible for all metro rail projects being developed in Maharashtra, except for those in the Mumbai Metropolitan Area, the Mum... | Technology | India | null |
3316408 | https://en.wikipedia.org/wiki/Wattleseed | Wattleseed | Wattleseeds are the edible seeds from any of 120 species of Australian Acacia that were traditionally used as food by Aboriginal Australians, and eaten either green (and cooked) or dried (and milled to a flour) to make a type of bush bread. Acacia murrayana and A. victoriae have been studied as candidates for commercia... | Biology and health sciences | Pseudocereals | Plants |
12438990 | https://en.wikipedia.org/wiki/Gas-fired%20power%20plant | Gas-fired power plant | A gas-fired power plant, sometimes referred to as gas-fired power station, natural gas power plant, or methane gas power plant, is a thermal power station that burns natural gas to generate electricity. Gas-fired power plants generate almost a quarter of world electricity and are significant sources of greenhouse gas e... | Technology | Power generation | null |
12439068 | https://en.wikipedia.org/wiki/Medical%20test | Medical test | A medical test is a medical procedure performed to detect, diagnose, or monitor diseases, disease processes, susceptibility, or to determine a course of treatment. Medical tests such as, physical and visual exams, diagnostic imaging, genetic testing, chemical and cellular analysis, relating to clinical chemistry and m... | Biology and health sciences | Medical procedures | null |
1740015 | https://en.wikipedia.org/wiki/Flame%20test | Flame test | A flame test is relatively quick test for the presence of some elements in a sample. The technique is archaic and of questionable reliability, but once was a component of qualitative inorganic analysis. The phenomenon is related to pyrotechnics and atomic emission spectroscopy. The color of the flames is understood t... | Physical sciences | Chemical methods | Chemistry |
1740813 | https://en.wikipedia.org/wiki/Acid%20salt | Acid salt | Acid salts are a class of salts that produce an acidic solution after being dissolved in a solvent. Its formation as a substance has a greater electrical conductivity than that of the pure solvent. An acidic solution formed by acid salt is made during partial neutralization of diprotic or polyprotic acids. A half-neutr... | Physical sciences | Salts and ions: General | Chemistry |
1741326 | https://en.wikipedia.org/wiki/Fatty%20alcohol | Fatty alcohol | Fatty alcohols (or long-chain alcohols) are usually high-molecular-weight, straight-chain primary alcohols, but can also range from as few as 4–6 carbons to as many as 22–26, derived from natural fats and oils. The precise chain length varies with the source. Some commercially important fatty alcohols are lauryl, stear... | Physical sciences | Alcohols | Chemistry |
1741375 | https://en.wikipedia.org/wiki/Rearrangement%20reaction | Rearrangement reaction | In organic chemistry, a rearrangement reaction is a broad class of organic reactions where the carbon skeleton of a molecule is rearranged to give a structural isomer of the original molecule. Often a substituent moves from one atom to another atom in the same molecule, hence these reactions are usually intramolecular.... | Physical sciences | Organic reactions | Chemistry |
1741584 | https://en.wikipedia.org/wiki/Ageusia | Ageusia | Ageusia (from negative prefix a- and Ancient Greek γεῦσις geûsis 'taste') is the loss of taste functions of the tongue, particularly the inability to detect sweetness, sourness, bitterness, saltiness, and umami (meaning 'savory taste'). It is sometimes confused with anosmia – a loss of the sense of smell. True ageusia ... | Biology and health sciences | Symptoms and signs | Health |
1741642 | https://en.wikipedia.org/wiki/1%2C2-rearrangement | 1,2-rearrangement | A 1,2-rearrangement or 1,2-migration or 1,2-shift or Whitmore 1,2-shift is an organic reaction where a substituent moves from one atom to another atom in a chemical compound. In a 1,2 shift the movement involves two adjacent atoms but moves over larger distances are possible. In the example below the substituent R move... | Physical sciences | Organic reactions | Chemistry |
1742315 | https://en.wikipedia.org/wiki/Vaccine%20hesitancy | Vaccine hesitancy | Vaccine hesitancy is a delay in acceptance, or refusal, of vaccines despite the availability of vaccine services and supporting evidence. The term covers refusals to vaccinate, delaying vaccines, accepting vaccines but remaining uncertain about their use, or using certain vaccines but not others. Although adverse effec... | Biology and health sciences | Drugs and pharmacology | null |
1742892 | https://en.wikipedia.org/wiki/Weaver%20ant | Weaver ant | Weaver ants or green ants are eusocial insects of the Hymenoptera family Formicidae belonging to the tribe Oecophyllini. Weaver ants live in trees (they are obligately arboreal) and are known for their unique nest building behaviour where workers construct nests by weaving together leaves using larval silk. Colonies ca... | Biology and health sciences | Hymenoptera | Animals |
1743431 | https://en.wikipedia.org/wiki/Convergent%20series | Convergent series | In mathematics, a series is the sum of the terms of an infinite sequence of numbers. More precisely, an infinite sequence defines a series that is denoted
The th partial sum is the sum of the first terms of the sequence; that is,
A series is convergent (or converges) if and only if the sequence of its partial s... | Mathematics | Sequences and series | null |
1743750 | https://en.wikipedia.org/wiki/Pace%20%28unit%29 | Pace (unit) | A pace is a unit of length consisting either of one normal walking step (approximately ), or of a double step, returning to the same foot (approximately ). The normal pace length decreases with age and some health conditions. The word "pace" is also used for units inverse to speed, used mainly for walking and running, ... | Physical sciences | Other | Basics and measurement |
1744650 | https://en.wikipedia.org/wiki/Dispersion%20%28water%20waves%29 | Dispersion (water waves) | In fluid dynamics, dispersion of water waves generally refers to frequency dispersion, which means that waves of different wavelengths travel at different phase speeds. Water waves, in this context, are waves propagating on the water surface, with gravity and surface tension as the restoring forces. As a result, water ... | Physical sciences | Waves | Physics |
1744868 | https://en.wikipedia.org/wiki/Damping | Damping | In physical systems, damping is the loss of energy of an oscillating system by dissipation. Damping is an influence within or upon an oscillatory system that has the effect of reducing or preventing its oscillation. Examples of damping include viscous damping in a fluid (see viscous drag), surface friction, radiation, ... | Physical sciences | Classical mechanics | Physics |
5932107 | https://en.wikipedia.org/wiki/Ulmus%20davidiana | Ulmus davidiana | Ulmus davidiana, also known as the David elm, or Father David elm (named after the botanist Armand David, who collected specimens), is a small deciduous tree widely distributed across China, Mongolia, Korea, Siberia, and Japan, where it is found in wetlands along streams at elevations of 2000–2300 m (6,500–7,500 ft). T... | Biology and health sciences | Rosales | Plants |
4499533 | https://en.wikipedia.org/wiki/Type-II%20superconductor | Type-II superconductor | In superconductivity, a type-II superconductor is a superconductor that exhibits an intermediate phase of mixed ordinary and superconducting properties at intermediate temperature and fields above the superconducting phases.
It also features the formation of magnetic field vortices with an applied external magnetic fie... | Physical sciences | Electrical circuits | Physics |
4500678 | https://en.wikipedia.org/wiki/River%20morphology | River morphology | The terms river morphology and its synonym stream morphology are used to describe the shapes of river channels and how they change in shape and direction over time. The morphology of a river channel is a function of a number of processes and environmental conditions, including the composition and erodibility of the bed... | Physical sciences | Fluvial landforms | Earth science |
19133401 | https://en.wikipedia.org/wiki/Google%20Chrome | Google Chrome | Google Chrome is a web browser developed by Google. It was first released in 2008 for Microsoft Windows, built with free software components from Apple WebKit and Mozilla Firefox. Versions were later released for Linux, macOS, iOS, iPadOS, and also for Android, where it is the default browser. The browser is also the m... | Technology | Browsers | null |
10062061 | https://en.wikipedia.org/wiki/SSPSF%20model | SSPSF model | The SSPSF (stochastic self-propagating star formation) model of star formation was proposed by Mueller & Arnett in 1976, generalized afterward by Gerola & Seiden in 1978 and Gerola, Seiden, & Schulman in 1980. This model proposes that star formation propagates via the action of shock waves produced by stellar winds and... | Physical sciences | Galaxy classification | Astronomy |
10064152 | https://en.wikipedia.org/wiki/Continental%20rise | Continental rise | The continental rise is a low-relief zone of accumulated sediments that lies between the continental slope and the abyssal plain. It is a major part of the continental margin, covering around 10% of the ocean floor.
Formation
This geologic structure results from deposition of sediments, mainly due to mass wasting, th... | Physical sciences | Tectonics | Earth science |
10068133 | https://en.wikipedia.org/wiki/Sunda%20clouded%20leopard | Sunda clouded leopard | The Sunda clouded leopard (Neofelis diardi) is a medium-sized wild cat native to Borneo and Sumatra. It is listed as Vulnerable on the IUCN Red List since 2015, as the total effective population probably consists of fewer than 10,000 mature individuals, with a decreasing population trend. On both Sunda Islands, it is t... | Biology and health sciences | Felines | Animals |
7804521 | https://en.wikipedia.org/wiki/Rain%20gutter | Rain gutter | A rain gutter, eavestrough, eaves-shoot or surface water collection channel is a component of a water discharge system for a building. It is necessary to prevent water dripping or flowing off roofs in an uncontrolled manner for several reasons: to prevent it damaging the walls, drenching persons standing below or enter... | Technology | Hydraulic infrastructure | null |
2422921 | https://en.wikipedia.org/wiki/Black%20fly | Black fly | A black fly or blackfly (sometimes called a buffalo gnat, turkey gnat, or white socks) is any member of the family Simuliidae of the Culicomorpha infraorder. It is related to the Ceratopogonidae, Chironomidae, and Thaumaleidae. Over 2,200 species of black flies have been formally named, of which 15 are extinct. They ar... | Biology and health sciences | Flies (Diptera) | null |
2423712 | https://en.wikipedia.org/wiki/Magic%20acid | Magic acid | Magic acid () is a superacid consisting of a mixture, most commonly in a 1:1 molar ratio, of fluorosulfuric acid () and antimony pentafluoride (). This conjugate Brønsted–Lewis superacid system was developed in the 1960s by Ronald Gillespie and his team at McMaster University, and has been used by George Olah to stabil... | Physical sciences | Specific acids | Chemistry |
2426137 | https://en.wikipedia.org/wiki/Tapinoma%20melanocephalum | Tapinoma melanocephalum | Tapinoma melanocephalum is a species of ant that goes by the common name ghost ant.
They are recognised by their dark head and pale or translucent legs and gaster (abdomen). This colouring makes this tiny ant seem even smaller.
Description
The ghost ant is small, with average lengths ranging between in workers. Th... | Biology and health sciences | Hymenoptera | Animals |
2426926 | https://en.wikipedia.org/wiki/Snow%20squall | Snow squall | A snow squall, or snowsquall, is a sudden moderately heavy snowfall with blowing snow and strong, gusty surface winds. It is often referred to as a whiteout and is similar to a blizzard but is localized in time or in location and snow accumulations may or may not be significant.
Types
There are two primary types of sn... | Physical sciences | Storms | Earth science |
412544 | https://en.wikipedia.org/wiki/Scatter%20plot | Scatter plot | A scatter plot, also called a scatterplot, scatter graph, scatter chart, scattergram, or scatter diagram, is a type of plot or mathematical diagram using Cartesian coordinates to display values for typically two variables for a set of data. If the points are coded (color/shape/size), one additional variable can be disp... | Mathematics | Statistics | null |
412649 | https://en.wikipedia.org/wiki/Chicago%20%22L%22 | Chicago "L" | The Chicago "L" (short for "elevated") is the rapid transit system serving the city of Chicago and some of its surrounding suburbs in the U.S. state of Illinois. Operated by the Chicago Transit Authority (CTA), it is the fourth-largest rapid transit system in the United States in terms of total route length, at long a... | Technology | United States | null |
412735 | https://en.wikipedia.org/wiki/Rheumatic%20fever | Rheumatic fever | Rheumatic fever (RF) is an inflammatory disease that can involve the heart, joints, skin, and brain. The disease typically develops two to four weeks after a streptococcal throat infection. Signs and symptoms include fever, multiple painful joints, involuntary muscle movements, and occasionally a characteristic non-itc... | Biology and health sciences | Bacterial infections | Health |
412753 | https://en.wikipedia.org/wiki/Allergic%20rhinitis | Allergic rhinitis | Allergic rhinitis, of which the seasonal type is called hay fever, is a type of inflammation in the nose that occurs when the immune system overreacts to allergens in the air. It is classified as a type I hypersensitivity reaction. Signs and symptoms include a runny or stuffy nose, sneezing, red, itchy, and watery eyes... | Biology and health sciences | Specific diseases | Health |
412903 | https://en.wikipedia.org/wiki/Gourami | Gourami | Gouramis, or gouramies , are a group of freshwater anabantiform fish that comprise the family Osphronemidae. The fish are native to Asia—from the Indian Subcontinent to Southeast Asia and northeasterly towards Korea. The name "gourami", of Indonesian origin, is also used for fish of the families Helostomatidae and Anab... | Biology and health sciences | Acanthomorpha | Animals |
412916 | https://en.wikipedia.org/wiki/Inkscape | Inkscape | Inkscape is a free and open-source vector graphics editor for traditional Unix-compatible systems such as GNU/Linux, BSD derivatives and Illumos, as well as Windows and macOS. It offers a rich set of features and is widely used for both artistic and technical illustrations such as cartoons, clip art, logos, typography,... | Technology | Multimedia_2 | null |
412942 | https://en.wikipedia.org/wiki/Lipopolysaccharide | Lipopolysaccharide | Lipopolysaccharide, now more commonly known as endotoxin, is a collective term for components of the outermost membrane of the cell envelope of gram-negative bacteria, such as E. coli and Salmonella with a common structural architecture. Lipopolysaccharides (LPS) are large molecules consisting of three parts: an outer... | Biology and health sciences | Lipids | Biology |
413274 | https://en.wikipedia.org/wiki/Vehicle%20for%20hire | Vehicle for hire | A vehicle for hire is a vehicle providing private transport or shared transport for a fee, in which passengers are generally free to choose their points or approximate points of origin and destination, unlike public transport, and which they do not drive themselves, as in car rental and carsharing. They may be offered ... | Technology | Motorized road transport | null |
413340 | https://en.wikipedia.org/wiki/Sporophyte | Sporophyte | A sporophyte () is the diploid multicellular stage in the life cycle of a plant or alga which produces asexual spores. This stage alternates with a multicellular haploid gametophyte phase.
Life cycle
The sporophyte develops from the zygote produced when a haploid egg cell is fertilized by a haploid sperm and each sp... | Biology and health sciences | Plant reproduction | null |
413522 | https://en.wikipedia.org/wiki/Box | Box | A box (plural: boxes) is a container with rigid sides used for the storage or transportation of its contents. Most boxes have flat, parallel, rectangular sides (typically rectangular prisms). Boxes can be very small (like a matchbox) or very large (like a shipping box for furniture) and can be used for a variety of pur... | Technology | Containers | null |
413928 | https://en.wikipedia.org/wiki/Ascariasis | Ascariasis | Ascariasis is a disease caused by the parasitic roundworm Ascaris lumbricoides. Infections have no symptoms in more than 85% of cases, especially if the number of worms is small. Symptoms increase with the number of worms present and may include shortness of breath and fever at the beginning of the disease. These may b... | Biology and health sciences | Helminthic diseases and infestations | Health |
414144 | https://en.wikipedia.org/wiki/Sterilization%20%28microbiology%29 | Sterilization (microbiology) | Sterilization () refers to any process that removes, kills, or deactivates all forms of life (particularly microorganisms such as fungi, bacteria, spores, and unicellular eukaryotic organisms) and other biological agents (such as prions or viruses) present in fluid or on a specific surface or object. Sterilization can ... | Technology | Food, water and health | null |
414192 | https://en.wikipedia.org/wiki/Ovarian%20cancer | Ovarian cancer | Ovarian cancer is a cancerous tumor of an ovary. It may originate from the ovary itself or more commonly from communicating nearby structures such as fallopian tubes or the inner lining of the abdomen. The ovary is made up of three different cell types including epithelial cells, germ cells, and stromal cells. When the... | Biology and health sciences | Cancer | Health |
414259 | https://en.wikipedia.org/wiki/Trichomonas%20vaginalis | Trichomonas vaginalis | Trichomonas vaginalis is an anaerobic, flagellated protozoan parasite and the causative agent of a sexually transmitted disease called trichomoniasis. It is the most common pathogenic protozoan that infects humans in industrialized countries. Infection rates in men and women are similar but women are usually symptomati... | Biology and health sciences | Excavata | Plants |
414262 | https://en.wikipedia.org/wiki/Fecal%E2%80%93oral%20route | Fecal–oral route | The fecal–oral route (also called the oral–fecal route or orofecal route) describes a particular route of transmission of a disease wherein pathogens in fecal particles pass from one person to the mouth of another person. Main causes of fecal–oral disease transmission include lack of adequate sanitation (leading to ope... | Biology and health sciences | Concepts | Health |
414350 | https://en.wikipedia.org/wiki/Tooth%20decay | Tooth decay | Dental cavity, also known as tooth decay,<ref name="caries" group="lower-alpha">The word 'caries' is a mass noun, and is not a plural of 'carie'.</ref> is the breakdown of teeth due to acids produced by bacteria. The resulting cavities may be a number of different colors, from yellow to black. Symptoms may include pain... | Biology and health sciences | Dentistry | null |
414721 | https://en.wikipedia.org/wiki/Forehead | Forehead | In human anatomy, the forehead is an area of the head bounded by three features, two of the skull and one of the scalp. The top of the forehead is marked by the hairline, the edge of the area where hair on the scalp grows. The bottom of the forehead is marked by the supraorbital ridge, the bone feature of the skull a... | Biology and health sciences | Human anatomy | Health |
1142120 | https://en.wikipedia.org/wiki/Candlestick%20chart | Candlestick chart | A candlestick chart (also called Japanese candlestick chart or K-line) is a style of financial chart used to describe price movements of a security, derivative, or currency.
While similar in appearance to a bar chart, each candlestick represents four important pieces of information for that day: open and close in the ... | Mathematics | Statistics | null |
1145328 | https://en.wikipedia.org/wiki/Metal%20fabrication | Metal fabrication | Metal fabrication is the creation of metal structures by cutting, bending and assembling processes. It is a value-added process involving the creation of machines, parts, and structures from various raw materials.
Typically, a fabrication shop bids on a job, usually based on engineering drawings, and if awarded the c... | Technology | Metallurgy | null |
1145707 | https://en.wikipedia.org/wiki/Cervical%20collar | Cervical collar | A cervical collar, also known as a neck brace, is a medical device used to support and immobilize a person's neck. It is also applied by emergency personnel to those who have had traumatic head or neck injuries, although they should not be routinely used in prehospital care. They can also be used to treat chronic medic... | Technology | Devices | null |
1146115 | https://en.wikipedia.org/wiki/Astronomical%20radio%20source | Astronomical radio source | An astronomical radio source is an object in outer space that emits strong radio waves. Radio emission comes from a wide variety of sources. Such objects are among the most extreme and energetic physical processes in the universe.
History
In 1932, American physicist and radio engineer Karl Jansky detected radio waves ... | Physical sciences | Radio astronomy | Astronomy |
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