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1991704 | https://en.wikipedia.org/wiki/Nymphaea%20nouchali%20var.%20caerulea | Nymphaea nouchali var. caerulea | Nymphaea nouchali var. caerulea, is a water lily in the genus Nymphaea, a botanical variety of Nymphaea nouchali.
It is an aquatic plant of freshwater lakes, pools and rivers, naturally found throughout most of the eastern half of Africa, as well as parts of southern Arabia, but has also been spread to other regions a... | Biology and health sciences | Nymphaeales | Plants |
1991929 | https://en.wikipedia.org/wiki/Babirusa | Babirusa | The babirusas, also called deer-pigs (), are a genus, Babyrousa, in the swine family found in the Indonesian islands of Sulawesi, Togian, Sula and Buru. All members of this genus were considered part of a single species until 2002, the babirusa, B. babyrussa, but following that was split into several species. This scie... | Biology and health sciences | Pigs_2 | Animals |
1992713 | https://en.wikipedia.org/wiki/Merlangius | Merlangius | Merlangius merlangus, commonly known as whiting or merling, is an important food fish in the eastern North Atlantic Ocean and the northern Mediterranean, western Baltic, and Black Sea. In Anglophonic countries outside the whiting's natural range, the name "whiting" has been applied to various other species of fish.
De... | Biology and health sciences | Acanthomorpha | Animals |
1994190 | https://en.wikipedia.org/wiki/ProPhoto%20RGB%20color%20space | ProPhoto RGB color space | The ProPhoto RGB color space, also known as ROMM RGB (Reference Output Medium Metric), is an output referred RGB color space developed by Kodak. It offers an especially large gamut designed for use with photographic output in mind. The ProPhoto RGB color space encompasses over 90% of possible surface colors in the CIE ... | Physical sciences | Basics | Physics |
30206738 | https://en.wikipedia.org/wiki/Chronic%20obstructive%20pulmonary%20disease | Chronic obstructive pulmonary disease | Chronic obstructive pulmonary disease (COPD) is a type of progressive lung disease characterized by chronic respiratory symptoms and airflow limitation. GOLD 2024 defined COPD as a heterogeneous lung condition characterized by chronic respiratory symptoms (dyspnea or shortness of breath, cough, sputum production or exa... | Biology and health sciences | Non-infectious disease | null |
1354990 | https://en.wikipedia.org/wiki/NGC%201275 | NGC 1275 | NGC 1275 (also known as Perseus A or Caldwell 24) is a type 1.5 Seyfert galaxy located around 237 million light-years away in the direction of the constellation Perseus. NGC 1275 is a member of the large Perseus Cluster of galaxies.
Properties
NGC 1275 consists of two galaxies, a central type-cD galaxy in the Perseus... | Physical sciences | Notable galaxies | Astronomy |
1355057 | https://en.wikipedia.org/wiki/Overhead%20power%20line | Overhead power line | An overhead power line is a structure used in electric power transmission and distribution to transmit electrical energy along large distances. It consists of one or more conductors (commonly multiples of three) suspended by towers or poles. Since the surrounding air provides good cooling, insulation along long passa... | Technology | Electricity transmission and distribution | null |
1355078 | https://en.wikipedia.org/wiki/Overhead%20cable | Overhead cable | An overhead cable is a cable for the transmission of information, laid on utility poles. Overhead telephone and cable TV lines are common in North America. These poles sometimes carry overhead power lines for the supply of electric power. Power supply companies may also use them for an in-house communication network. S... | Technology | Electricity transmission and distribution | null |
1355101 | https://en.wikipedia.org/wiki/Feeler%20gauge | Feeler gauge | A feeler gauge is a tool used to measure gap widths. Feeler gauges are mostly used in engineering to measure the clearance between two parts.
Description
They consist of a number of small lengths of steel of different thicknesses with measurements marked on each piece. They are flexible enough that, even if they are a... | Technology | Measuring instruments | null |
1356031 | https://en.wikipedia.org/wiki/Agribusiness | Agribusiness | Agribusiness is the industry, enterprises, and the field of study of value chains in agriculture and in the bio-economy,
in which case it is also called bio-business or bio-enterprise.
The primary goal of agribusiness is to maximize profit while satisfying the needs of consumers for products related to natural resourc... | Technology | Agriculture, labor and economy | null |
1356402 | https://en.wikipedia.org/wiki/Steric%20effects | Steric effects | Steric effects arise from the spatial arrangement of atoms. When atoms come close together there is generally a rise in the energy of the molecule. Steric effects are nonbonding interactions that influence the shape (conformation) and reactivity of ions and molecules. Steric effects complement electronic effects, whic... | Physical sciences | Stereochemistry | Chemistry |
1356480 | https://en.wikipedia.org/wiki/Lyon%20Metro | Lyon Metro | The Lyon Metro (, ) is a rapid transit system serving Lyon Metropolis, France. First opened in 1974, it currently consists of four lines, serving 42 stations and comprising of route. Part of the Transports en Commun Lyonnais (TCL) system of public transport, it is supported by two funiculars and a tramway network.
Un... | Technology | France | null |
1357154 | https://en.wikipedia.org/wiki/Parallel%20evolution | Parallel evolution | Parallel evolution is the similar development of a trait in distinct species that are not closely related, but share a similar original trait in response to similar evolutionary pressure.
Parallel vs. convergent evolution
Given a trait that occurs in each of two lineages descended from a specified ancestor, it is pos... | Biology and health sciences | Basics_4 | Biology |
1357514 | https://en.wikipedia.org/wiki/Recombinant%20DNA | Recombinant DNA | Recombinant DNA (rDNA) molecules are DNA molecules formed by laboratory methods of genetic recombination (such as molecular cloning) that bring together genetic material from multiple sources, creating sequences that would not otherwise be found in the genome.
Recombinant DNA is the general name for a piece of DNA tha... | Technology | Biotechnology | null |
1358431 | https://en.wikipedia.org/wiki/Surface%20brightness | Surface brightness | In astronomy, surface brightness (SB) quantifies the apparent brightness or flux density per unit angular area of a spatially extended object such as a galaxy or nebula, or of the night sky background. An object's surface brightness depends on its surface luminosity density, i.e., its luminosity emitted per unit surfa... | Physical sciences | Basics | Astronomy |
1358453 | https://en.wikipedia.org/wiki/Astrophysical%20jet | Astrophysical jet | An astrophysical jet is an astronomical phenomenon where outflows of ionised matter are emitted as extended beams along the axis of rotation. When this greatly accelerated matter in the beam approaches the speed of light, astrophysical jets become relativistic jets as they show effects from special relativity.
The for... | Physical sciences | Basics_2 | Astronomy |
1358820 | https://en.wikipedia.org/wiki/Pavilion | Pavilion | In architecture, pavilion has several meanings;
It may be a subsidiary building that is either positioned separately or as an attachment to a main building. Often it is associated with pleasure. In palaces and traditional mansions of Asia, there may be pavilions that are either freestanding or connected by covered wa... | Technology | Buildings and infrastructure | null |
18938226 | https://en.wikipedia.org/wiki/Digital%20rights%20management | Digital rights management | Digital rights management (DRM) is the management of legal access to digital content. Various tools or technological protection measures (TPM), such as access control technologies, can restrict the use of proprietary hardware and copyrighted works. DRM technologies govern the use, modification and distribution of copyr... | Technology | Computer security | null |
18940621 | https://en.wikipedia.org/wiki/Ammunition | Ammunition | Ammunition, also known as ammo, is the material fired, scattered, dropped, or detonated from any weapon or weapon system. The term Ammunition includes both expendable weapons (e.g., bombs, missiles, grenades, land mines), and the component parts of other weapons that create the effect on a target (e.g., bullets and wa... | Technology | Ammunition | null |
18943937 | https://en.wikipedia.org/wiki/Emulator | Emulator | In computing, an emulator is hardware or software that enables one computer system (called the host) to behave like another computer system (called the guest). An emulator typically enables the host system to run software or use peripheral devices designed for the guest system.
Emulation refers to the ability of a comp... | Technology | Computer software | null |
18947686 | https://en.wikipedia.org/wiki/Caryophyllales | Caryophyllales | Caryophyllales ( ) is a diverse and heterogeneous order of flowering plants that includes the cacti, carnations, amaranths, ice plants, beets, and many carnivorous plants. Many members are succulent, having fleshy stems or leaves. The betalain pigments are unique in plants of this order and occur in all its core famili... | Biology and health sciences | Caryophyllales | Plants |
18947703 | https://en.wikipedia.org/wiki/Nausea | Nausea | Nausea is a diffuse sensation of unease and discomfort, sometimes perceived as an urge to vomit. It can be a debilitating symptom if prolonged and has been described as placing discomfort on the chest, abdomen, or back of the throat.
Over 30 definitions of nausea were proposed in a 2011 book on the topic.
Nausea is a... | Biology and health sciences | Symptoms and signs | Health |
27471338 | https://en.wikipedia.org/wiki/Object-oriented%20programming | Object-oriented programming | Object-oriented programming (OOP) is a programming paradigm based on the concept of objects, which can contain data and code: data in the form of fields (often known as attributes or properties), and code in the form of procedures (often known as methods). In OOP, computer programs are designed by making them out of ob... | Technology | Programming | null |
3730679 | https://en.wikipedia.org/wiki/Chalicotherium | Chalicotherium | Chalicotherium (Ancient Greek /, -: pebble/gravel + /, diminutive of / : beast) is a genus of extinct odd-toed ungulates of the order Perissodactyla and family Chalicotheriidae. The genus is known from Europe and Asia, from the Middle Miocene to Late Miocene.
This animal would look much like other chalicotheriid speci... | Biology and health sciences | Perissodactyla | Animals |
3734085 | https://en.wikipedia.org/wiki/Animal%20breeding | Animal breeding | Animal breeding is a branch of animal science that addresses the evaluation (using best linear unbiased prediction and other methods) of the genetic value (estimated breeding value, EBV) of livestock. Selecting for breeding animals with superior EBV in growth rate, egg, meat, milk, or wool production, or with other des... | Technology | Animal husbandry | null |
3735922 | https://en.wikipedia.org/wiki/Basa%20%28fish%29 | Basa (fish) | Basa (Pangasius bocourti), as it is commonly referred to, is a species of primarily freshwater-dwelling catfish in the shark-catfish family, Pangasiidae, native to the Mekong and Chao Phraya river basins of Mainland Southeast Asia. Economically, these fish are important as a regional food source, and are also prized on... | Biology and health sciences | Siluriformes | Animals |
25631460 | https://en.wikipedia.org/wiki/Tooth | Tooth | A tooth (: teeth) is a hard, calcified structure found in the jaws (or mouths) of many vertebrates and used to break down food. Some animals, particularly carnivores and omnivores, also use teeth to help with capturing or wounding prey, tearing food, for defensive purposes, to intimidate other animals often including t... | Biology and health sciences | Gastrointestinal tract | Biology |
6668150 | https://en.wikipedia.org/wiki/Clearing%20the%20neighbourhood | Clearing the neighbourhood | In celestial mechanics, "clearing the neighbourhood" (or dynamical dominance) around a celestial body's orbit describes the body becoming gravitationally dominant such that there are no other bodies of comparable size other than its natural satellites or those otherwise under its gravitational influence.
"Clearing the... | Physical sciences | Planetary science | Astronomy |
2774053 | https://en.wikipedia.org/wiki/Eudicots | Eudicots | The eudicots, Eudicotidae, or eudicotyledons are a clade of flowering plants (angiosperms) which are mainly characterized by having two seed leaves (cotyledons) upon germination. The term derives from dicotyledon (etymologically, eu = true; di = two; cotyledon = seed leaf). Historically, authors have used the terms tri... | Biology and health sciences | Eudicots | null |
2776501 | https://en.wikipedia.org/wiki/Visible-light%20astronomy | Visible-light astronomy | Visible-light astronomy encompasses a wide variety of astronomical observation via telescopes that are sensitive in the range of visible light (optical telescopes). Visible-light astronomy is part of optical astronomy, and differs from astronomies based on invisible types of light in the electromagnetic radiation spec... | Physical sciences | Basics | Astronomy |
2776748 | https://en.wikipedia.org/wiki/Spinning%20mule | Spinning mule | The spinning mule is a machine used to spin cotton and other fibres. They were used extensively from the late 18th to the early 20th century in the mills of Lancashire and elsewhere. Mules were worked in pairs by a minder, with the help of two boys: the little piecer and the big or side piecer. The carriage carried up ... | Technology | Spinning | null |
2776778 | https://en.wikipedia.org/wiki/Barbary%20sheep | Barbary sheep | The Barbary sheep (Ammotragus lervia), also known as aoudad (pronounced [ˈɑʊdæd]), is a species of caprine native to rocky mountains in North Africa and parts of West Africa. While this is the only species in genus Ammotragus, six subspecies have been described. Although it is rare in its native North Africa, it has b... | Biology and health sciences | Bovidae | Animals |
34311891 | https://en.wikipedia.org/wiki/Cephalopod%20beak | Cephalopod beak | All extant cephalopods have a two-part beak, or rostrum, situated in the buccal mass and surrounded by the muscular head appendages. The dorsal (upper) mandible fits into the ventral (lower) mandible and together they function in a scissor-like fashion. The beak may also be referred to as the mandibles or jaws. These b... | Biology and health sciences | Gastrointestinal tract | Biology |
34317494 | https://en.wikipedia.org/wiki/QED%20vacuum | QED vacuum | The QED vacuum or quantum electrodynamic vacuum is the field-theoretic vacuum of quantum electrodynamics. It is the lowest energy state (the ground state) of the electromagnetic field when the fields are quantized. When the Planck constant is hypothetically allowed to approach zero, QED vacuum is converted to classical... | Physical sciences | Quantum mechanics | Physics |
5063242 | https://en.wikipedia.org/wiki/Potassium%20acetate | Potassium acetate | Potassium acetate (also called potassium ethanoate), (CH3COOK) is the potassium salt of acetic acid. It is a hygroscopic solid at room temperature.
Preparation
It can be prepared by treating a potassium-containing base such as potassium hydroxide or potassium carbonate with acetic acid:
CH3COOH + KOH → CH3COOK + H2O
... | Physical sciences | Acetates | Chemistry |
5064554 | https://en.wikipedia.org/wiki/Lead%28II%29%20chromate | Lead(II) chromate | Lead(II) chromate is an inorganic compound with the chemical formula . It is a bright yellow solid that is very poorly soluble in water. It occurs also as the mineral crocoite. It is used as a pigment.
Structure
Two polymorphs of lead chromate are known, orthorhombic and the more stable monoclinic form. Monoclinic ... | Physical sciences | Metallic oxyanions | Chemistry |
21242393 | https://en.wikipedia.org/wiki/Musa%20balbisiana | Musa balbisiana | Musa balbisiana, also known simply as plantain, is a wild-type species of banana. It is one of the ancestors of modern cultivated bananas, along with Musa acuminata.
Description
It grows lush leaves in clumps with a more upright habit than most cultivated bananas. Flowers grow in inflorescences coloured red to maroon... | Biology and health sciences | Tropical and tropical-like fruit | Plants |
21244265 | https://en.wikipedia.org/wiki/Sense%20of%20smell | Sense of smell | The sense of smell, or olfaction, is the special sense through which smells (or odors) are perceived. The sense of smell has many functions, including detecting desirable foods, hazards, and pheromones, and plays a role in taste.
In humans, it occurs when an odor binds to a receptor within the nasal cavity, transmitt... | Biology and health sciences | Nervous system | null |
21244409 | https://en.wikipedia.org/wiki/VY%20Canis%20Majoris | VY Canis Majoris | VY Canis Majoris (abbreviated to VY CMa) is an extreme oxygen-rich red hypergiant or red supergiant (O-rich RHG or RSG) and pulsating variable star from the Solar System in the slightly southern constellation of Canis Major. It is one of the largest known stars, one of the most luminous and massive red supergiants, an... | Physical sciences | Notable stars | Astronomy |
21244416 | https://en.wikipedia.org/wiki/Hypergiant | Hypergiant | A hypergiant (luminosity class 0 or Ia+) is a very rare type of star that has an extremely high luminosity, mass, size and mass loss because of its extreme stellar winds. The term hypergiant is defined as luminosity class 0 (zero) in the MKK system. However, this is rarely seen in literature or in published spectral cl... | Physical sciences | Stellar astronomy | Astronomy |
21245414 | https://en.wikipedia.org/wiki/Line%20integral | Line integral | In mathematics, a line integral is an integral where the function to be integrated is evaluated along a curve. The terms path integral, curve integral, and curvilinear integral are also used; contour integral is used as well, although that is typically reserved for line integrals in the complex plane.
The function to... | Mathematics | Multivariable and vector calculus | null |
21245707 | https://en.wikipedia.org/wiki/Red%20giant | Red giant | A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses ()) in a late phase of stellar evolution. The outer atmosphere is inflated and tenuous, making the radius large and the surface temperature around or lower. The appearance of the red giant is from yellow-white to reddish-orang... | Physical sciences | Stellar astronomy | null |
886766 | https://en.wikipedia.org/wiki/Bell%20test | Bell test | A Bell test, also known as Bell inequality test or Bell experiment, is a real-world physics experiment designed to test the theory of quantum mechanics in relation to Albert Einstein's concept of local realism. Named for John Stewart Bell, the experiments test whether or not the real world satisfies local realism, whic... | Physical sciences | Quantum mechanics | Physics |
887427 | https://en.wikipedia.org/wiki/WinRAR | WinRAR | WinRAR is a trialware file archiver utility, developed by Eugene Roshal of win.rar GmbH. It can create and view archives in RAR or ZIP file formats, and unpack numerous archive file formats. To enable the user to test the integrity of archives, WinRAR embeds CRC32 or BLAKE2 checksums for each file in each archive. WinR... | Technology | Office and data management | null |
887815 | https://en.wikipedia.org/wiki/Hair%20conditioner | Hair conditioner | Hair conditioner is a hair care cosmetic product used to improve the feel, texture, appearance and manageability of hair. Its main purpose is to reduce friction between strands of hair to allow smoother brushing or combing, which might otherwise cause damage to the scalp. Various other benefits are often advertised, su... | Biology and health sciences | Hygiene products | Health |
888273 | https://en.wikipedia.org/wiki/Cantilever%20bridge | Cantilever bridge | A cantilever bridge is a bridge built using structures that project horizontally into space, supported on only one end (called cantilevers). For small footbridges, the cantilevers may be simple beams; however, large cantilever bridges designed to handle road or rail traffic use trusses built from structural steel, or b... | Technology | Transport infrastructure | null |
888711 | https://en.wikipedia.org/wiki/Mathematical%20statistics | Mathematical statistics | Mathematical statistics is the application of probability theory and other mathematical concepts to statistics, as opposed to techniques for collecting statistical data. Specific mathematical techniques that are commonly used in statistics include mathematical analysis, linear algebra, stochastic analysis, differential... | Mathematics | Statistics | null |
889183 | https://en.wikipedia.org/wiki/Inclinometer | Inclinometer | An inclinometer or clinometer is an instrument used for measuring angles of slope, elevation, or depression of an object with respect to gravity's direction. It is also known as a tilt indicator, tilt sensor, tilt meter, slope alert, slope gauge, gradient meter, gradiometer, level gauge, level meter, declinometer, and... | Technology | Surveying tools | null |
889856 | https://en.wikipedia.org/wiki/Superheated%20steam | Superheated steam | Superheated steam is steam at a temperature higher than its vaporization point at the absolute pressure where the temperature is measured.
Superheated steam can therefore cool (lose internal energy) by some amount, resulting in a lowering of its temperature without changing state (i.e., condensing) from a gas to a mix... | Physical sciences | Phase transitions | Physics |
889940 | https://en.wikipedia.org/wiki/Trivial%20name | Trivial name | In chemistry, a trivial name is a non-systematic name for a chemical substance. That is, the name is not recognized according to the rules of any formal system of chemical nomenclature such as IUPAC inorganic or IUPAC organic nomenclature. A trivial name is not a formal name and is usually a common name.
Generally, tr... | Physical sciences | Nomenclature | Chemistry |
890069 | https://en.wikipedia.org/wiki/Thymol | Thymol | Thymol (also known as 2-isopropyl-5-methylphenol, IPMP), , is a natural monoterpenoid phenol derivative of p-Cymene, isomeric with carvacrol. It occurs naturally in the oil of thyme, and it is extracted from Thymus vulgaris (common thyme), ajwain, and various other plants as a white crystalline substance of a pleasant ... | Physical sciences | Terpenes and terpenoids | Chemistry |
890149 | https://en.wikipedia.org/wiki/Alpine%20ibex | Alpine ibex | The Alpine ibex (Capra ibex), also known as the steinbock, is a European species of goat that lives in the Alps. It is one of ten species in the genus Capra and its closest living relative is the Iberian ibex. The Alpine ibex is a sexually dimorphic species; males are larger and carry longer horns than females. Its coa... | Biology and health sciences | Bovidae | Animals |
890232 | https://en.wikipedia.org/wiki/Hair%20cell | Hair cell | Hair cells are the sensory receptors of both the auditory system and the vestibular system in the ears of all vertebrates, and in the lateral line organ of fishes. Through mechanotransduction, hair cells detect movement in their environment.
In mammals, the auditory hair cells are located within the spiral organ of C... | Biology and health sciences | Sensory nervous system | Biology |
890259 | https://en.wikipedia.org/wiki/European%20mink | European mink | The European mink (Mustela lutreola), also known as the Russian mink and Eurasian mink, is a semiaquatic species of mustelid native to Europe.
It is similar in colour to the American mink, but is slightly smaller and has a less specialized skull. Despite having a similar name, build and behaviour, the European mink is... | Biology and health sciences | Mustelidae | Animals |
890314 | https://en.wikipedia.org/wiki/Brittle%20star | Brittle star | Brittle stars, serpent stars, or ophiuroids (; ; referring to the serpent-like arms of the brittle star) are echinoderms in the class Ophiuroidea, closely related to starfish. They crawl across the sea floor using their flexible arms for locomotion. The ophiuroids generally have five long, slender, whip-like arms which... | Biology and health sciences | Echinoderms | Animals |
20159769 | https://en.wikipedia.org/wiki/Droop%20speed%20control | Droop speed control | Droop speed control is a control mode used for AC electrical power generators, whereby the power output of a generator reduces as the line frequency increases. It is commonly used as the speed control mode of the governor of a prime mover driving a synchronous generator connected to an electrical grid. It works by cont... | Technology | Concepts | null |
1996352 | https://en.wikipedia.org/wiki/Bridge%20of%20the%20Americas | Bridge of the Americas | The Bridge of the Americas (; originally known as the Thatcher Ferry Bridge) is a road bridge in Panama which spans the Pacific entrance to the Panama Canal. Designed by Sverdrup & Parcel, it was completed in 1962 at a cost of US$20 million, connecting the north and south American land masses (hence its name), connecti... | Technology | Bridges | null |
1996536 | https://en.wikipedia.org/wiki/Grain%20boundary | Grain boundary | In materials science, a grain boundary is the interface between two grains, or crystallites, in a polycrystalline material. Grain boundaries are two-dimensional defects in the crystal structure, and tend to decrease the electrical and thermal conductivity of the material. Most grain boundaries are preferred sites for t... | Physical sciences | Crystallography | Physics |
1996903 | https://en.wikipedia.org/wiki/Cassiopeia%20A | Cassiopeia A | Cassiopeia A (Cas A) () is a supernova remnant (SNR) in the constellation Cassiopeia and the brightest extrasolar radio source in the sky at frequencies above 1 GHz. The supernova occurred approximately away within the Milky Way; given the width of the Orion Arm, it lies in the next-nearest arm outwards, the Perseus A... | Physical sciences | Notable nebulae | Astronomy |
1997989 | https://en.wikipedia.org/wiki/Crystal%20twinning | Crystal twinning | Crystal twinning occurs when two or more adjacent crystals of the same mineral are oriented so that they share some of the same crystal lattice points in a symmetrical manner. The result is an intergrowth of two separate crystals that are tightly bonded to each other. The surface along which the lattice points are shar... | Physical sciences | Crystallography | Physics |
1998254 | https://en.wikipedia.org/wiki/Granary | Granary | A granary, also known as a grain house and historically as a granarium in Latin, is a post-harvest storage building primarily for grains or seeds. Granaries are typically built above the ground to prevent spoilage and protect the stored grains or seeds from rodents, pests, floods, and adverse weather conditions. They a... | Technology | Buildings and infrastructure | null |
1998561 | https://en.wikipedia.org/wiki/Scorpius%20X-1 | Scorpius X-1 | Scorpius X-1 is an X-ray source located roughly 9000 light years away in the constellation Scorpius. Scorpius X-1 was the first extrasolar X-ray source discovered, and, aside from the Sun, it is the strongest apparent non-transient source of X-rays in the sky. The X-ray flux varies day-to-day, and is associated with an... | Physical sciences | Notable stars | Astronomy |
1999394 | https://en.wikipedia.org/wiki/Sand%20shark | Sand shark | Sand sharks, also known as sand tiger sharks, gray nurse sharks or ragged tooth sharks, are mackerel sharks of the family Odontaspididae. They are found worldwide in temperate and tropical waters. The three species are in two genera.
Description
The body tends to be brown with dark markings in the upper half. These m... | Biology and health sciences | Sharks | Animals |
1999621 | https://en.wikipedia.org/wiki/Styrax | Styrax | Styrax (common names storax or snowbell) is a genus of about 130 species of large shrubs or small trees in the family Styracaceae, mostly native to warm temperate to tropical regions of the Northern Hemisphere, with the majority in eastern and southeastern Asia, but also crossing the equator in South America. The resin... | Biology and health sciences | Ericales | Plants |
32826316 | https://en.wikipedia.org/wiki/Pinterest | Pinterest | Pinterest is an American social media service for publishing and discovery of information in the form of pinboards. This includes recipes, home, style, motivation, and inspiration on the Internet using image sharing. Pinterest, Inc. was founded by Ben Silbermann, Paul Sciarra, and Evan Sharp, and is headquartered in Sa... | Technology | Social network and blogging | null |
30231169 | https://en.wikipedia.org/wiki/Interbreeding%20between%20archaic%20and%20modern%20humans | Interbreeding between archaic and modern humans | Interbreeding between archaic and modern humans occurred during the Middle Paleolithic and early Upper Paleolithic. The interbreeding happened in several independent events that included Neanderthals and Denisovans, as well as several unidentified hominins.
In Europe, Asia and North Africa, interbreeding between archa... | Biology and health sciences | Homo | Biology |
3738572 | https://en.wikipedia.org/wiki/Combustion%20analysis | Combustion analysis | Combustion analysis is a method used in both organic chemistry and analytical chemistry to determine the elemental composition (more precisely empirical formula) of a pure organic compound by combusting the sample under conditions where the resulting combustion products can be quantitatively analyzed. Once the number o... | Physical sciences | Basics_2 | Chemistry |
3739627 | https://en.wikipedia.org/wiki/Yellow-lipped%20sea%20krait | Yellow-lipped sea krait | The yellow-lipped sea krait (Laticauda colubrina), also known as the banded sea krait or colubrine sea krait, is a species of venomous snake found in tropical Indo-Pacific oceanic waters. The snake has distinctive black stripes and a yellow snout, with a paddle-like tail for use in swimming.
It spends much of its time... | Biology and health sciences | Snakes | Animals |
3739933 | https://en.wikipedia.org/wiki/Turing%27s%20proof | Turing's proof | Turing's proof is a proof by Alan Turing, first published in November 1936 with the title "On Computable Numbers, with an Application to the ". It was the second proof (after Church's theorem) of the negation of Hilbert's ; that is, the conjecture that some purely mathematical yes–no questions can never be answered by ... | Mathematics | Computability theory | null |
3741200 | https://en.wikipedia.org/wiki/Asian%20water%20monitor | Asian water monitor | The Asian water monitor (Varanus salvator) is a large varanid lizard native to South and Southeast Asia. It is widely considered to be the second-largest lizard species, after the Komodo dragon. It is distributed from eastern and northeastern India and Bangladesh, the Andaman and Nicobar Islands, Sri Lanka, through sou... | Biology and health sciences | Lizards and other Squamata | Animals |
3741564 | https://en.wikipedia.org/wiki/Type%20%28model%20theory%29 | Type (model theory) | In model theory and related areas of mathematics, a type is an object that describes how a (real or possible) element or finite collection of elements in a mathematical structure might behave. More precisely, it is a set of first-order formulas in a language L with free variables x1, x2,..., xn that are true of a set ... | Mathematics | Model theory | null |
6670017 | https://en.wikipedia.org/wiki/Bornean%20orangutan | Bornean orangutan | The Bornean orangutan (Pongo pygmaeus) is an orangutan species endemic to the island of Borneo. It belongs to the only genus of great apes native to Asia and is the largest of the three Pongo species. It has a coarse, reddish coat and up to long arms. It is sexually dimorphic, with females ranging in body length from ... | Biology and health sciences | Apes | Animals |
1359660 | https://en.wikipedia.org/wiki/Giant%20pouched%20rat | Giant pouched rat | The giant pouched rats (genus Cricetomys) of sub-Saharan Africa are large muroid rodents.
Description
Their head and body lengths range from with scaly tails ranging from . They weigh between .
Taxonomy
Giant pouched rats are only distantly related to the true rats, although until recently they had been placed in th... | Biology and health sciences | Rodents | Animals |
1359960 | https://en.wikipedia.org/wiki/Pomology | Pomology | Pomology (from Latin , "fruit", + , "study") is a branch of botany that studies fruits and their cultivation. Someone who researches and practices the science of pomology is called a pomologist. The term fruticulture (from Latin , "fruit", + , "care") is also used to describe the agricultural practice of growing fruits... | Technology | Horticulture | null |
1360138 | https://en.wikipedia.org/wiki/Corythosaurus | Corythosaurus | Corythosaurus (; ) is a genus of hadrosaurid "duck-billed" dinosaur from the Late Cretaceous period, about 77–75.7 million years ago, in what is now western North America. Its name is derived from the Greek word κόρυς, meaning "helmet", named and described in 1914 by Barnum Brown. Corythosaurus is now thought to be a ... | Biology and health sciences | Ornitischians | Animals |
1361581 | https://en.wikipedia.org/wiki/Mechanical%20television | Mechanical television | Mechanical television or mechanical scan television is an obsolete television system that relies on a mechanical scanning device, such as a rotating disk with holes in it or a rotating mirror drum, to scan the scene and generate the video signal, and a similar mechanical device at the receiver to display the picture. T... | Technology | Broadcasting | null |
1362038 | https://en.wikipedia.org/wiki/Quaternary%20ammonium%20cation | Quaternary ammonium cation | In organic chemistry, quaternary ammonium cations, also known as quats, are positively-charged polyatomic ions of the structure , where R is an alkyl group, an aryl group or organyl group. Unlike the ammonium ion () and the primary, secondary, or tertiary ammonium cations, the quaternary ammonium cations are permanentl... | Physical sciences | Salts and ions: General | Chemistry |
1362114 | https://en.wikipedia.org/wiki/Aluminium%20chloride | Aluminium chloride | Aluminium chloride, also known as aluminium trichloride, is an inorganic compound with the formula . It forms a hexahydrate with the formula , containing six water molecules of hydration. Both the anhydrous form and the hexahydrate are colourless crystals, but samples are often contaminated with iron(III) chloride, gi... | Physical sciences | Halide salts | Chemistry |
1362656 | https://en.wikipedia.org/wiki/Eugenol | Eugenol | Eugenol is an allyl chain-substituted guaiacol, a member of the allylbenzene class of chemical compounds. It is a colorless to pale yellow, aromatic oily liquid extracted from certain essential oils especially from clove, nutmeg, cinnamon, basil and bay leaf. It is present in concentrations of 80–90% in clove bud oil ... | Physical sciences | Phenylpropanoids | Chemistry |
1362795 | https://en.wikipedia.org/wiki/4-manifold | 4-manifold | In mathematics, a 4-manifold is a 4-dimensional topological manifold. A smooth 4-manifold is a 4-manifold with a smooth structure. In dimension four, in marked contrast with lower dimensions, topological and smooth manifolds are quite different. There exist some topological 4-manifolds which admit no smooth structure,... | Mathematics | Topology | null |
1363291 | https://en.wikipedia.org/wiki/Medical%20device | Medical device | A medical device is any device intended to be used for medical purposes. Significant potential for hazards are inherent when using a device for medical purposes and thus medical devices must be proved safe and effective with reasonable assurance before regulating governments allow marketing of the device in their count... | Biology and health sciences | General concepts | Health |
1363657 | https://en.wikipedia.org/wiki/Rad%20%28radiation%20unit%29 | Rad (radiation unit) | The rad is a unit of absorbed radiation dose, defined as 1 rad = 0.01 Gy = 0.01 J/kg. It was originally defined in CGS units in 1953 as the dose causing 100 ergs of energy to be absorbed by one gram of matter. The material absorbing the radiation can be human tissue, air, water, or any other substance.
It has been rep... | Physical sciences | Absorbed dose | Basics and measurement |
1364340 | https://en.wikipedia.org/wiki/Cape%20%28geography%29 | Cape (geography) | In geography, a cape is a headland, peninsula or promontory extending into a body of water, usually a sea. A cape usually represents a marked change in trend of the coastline, often making them important landmarks in sea navigation. This also makes them prone to natural forms of erosion, mainly tidal actions, resulting... | Physical sciences | Oceanic and coastal landforms | Earth science |
18949797 | https://en.wikipedia.org/wiki/File%20sharing | File sharing | File sharing is the practice of distributing or providing access to digital media, such as computer programs, multimedia (audio, images and video), documents or electronic books. Common methods of storage, transmission and dispersion include removable media, centralized servers on computer networks, Internet-based hype... | Technology | Basics_4 | null |
18949896 | https://en.wikipedia.org/wiki/Computer%20cluster | Computer cluster | A computer cluster is a set of computers that work together so that they can be viewed as a single system. Unlike grid computers, computer clusters have each node set to perform the same task, controlled and scheduled by software. The newest manifestation of cluster computing is cloud computing.
The components of a cl... | Technology | Computer architecture concepts | null |
18950865 | https://en.wikipedia.org/wiki/Assault%20rifle | Assault rifle | An assault rifle is a select fire rifle that uses an intermediate-rifle cartridge and a detachable magazine. Assault rifles were first put into mass production and accepted into widespread service during World War II. The first assault rifle to see major usage was the German StG 44, a development of the earlier Mkb 42.... | Technology | Projectile weapons | null |
18952324 | https://en.wikipedia.org/wiki/Pitaya | Pitaya | A pitaya () or pitahaya () is the fruit of several cactus species indigenous to the region of southern Mexico and along the Pacific coasts of Guatemala, Costa Rica, and El Salvador. Pitaya is cultivated in East Asia, South Asia, Southeast Asia, the United States, the Caribbean, Australia, Brazil, and throughout tropica... | Biology and health sciences | Other culinary fruits | Plants |
18952443 | https://en.wikipedia.org/wiki/Osmoregulation | Osmoregulation | Osmoregulation is the active regulation of the osmotic pressure of an organism's body fluids, detected by osmoreceptors, to maintain the homeostasis of the organism's water content; that is, it maintains the fluid balance and the concentration of electrolytes (salts in solution which in this case is represented by bod... | Biology and health sciences | Basics | Biology |
18952492 | https://en.wikipedia.org/wiki/Anthocyanin | Anthocyanin | Anthocyanins (), also called anthocyans, are water-soluble vacuolar pigments that, depending on their pH, may appear red, purple, blue, or black. In 1835, the German pharmacist Ludwig Clamor Marquart named a chemical compound that gives flowers a blue color, Anthokyan, in his treatise "Die Farben der Blüthen" (English:... | Physical sciences | Polyphenols | Chemistry |
18952520 | https://en.wikipedia.org/wiki/Euphorbiaceae | Euphorbiaceae | Euphorbiaceae (), the spurge family, is a large family of flowering plants. In English, they are also commonly called euphorbias, which is also the name of the type genus of the family. Most spurges, such as Euphorbia paralias, are herbs, but some, especially in the tropics, are shrubs or trees, such as Hevea brasilien... | Biology and health sciences | Malpighiales | null |
18952649 | https://en.wikipedia.org/wiki/Pronghorn | Pronghorn | The pronghorn (, ) (Antilocapra americana) is a species of artiodactyl (even-toed, hoofed) mammal indigenous to interior western and central North America. Though not an antelope, it is known colloquially in North America as the American antelope, prong buck, pronghorn antelope and prairie antelope, because it closely ... | Biology and health sciences | Artiodactyla | null |
18952693 | https://en.wikipedia.org/wiki/Plant%20stem | Plant stem | A stem is one of two main structural axes of a vascular plant, the other being the root. It supports leaves, flowers and fruits, transports water and dissolved substances between the roots and the shoots in the xylem and phloem, engages in photosynthesis, stores nutrients, and produces new living tissue. The stem can a... | Biology and health sciences | Plant stem | null |
18952739 | https://en.wikipedia.org/wiki/Carnivorous%20plant | Carnivorous plant | Carnivorous plants are plants that derive some or most of their nutrients from trapping and consuming animals or protozoans, typically insects and other arthropods, and occasionally small mammals and birds. They still generate all of their energy from photosynthesis. They have adapted to grow in waterlogged sunny place... | Biology and health sciences | Botany | null |
18952748 | https://en.wikipedia.org/wiki/Cuticle | Cuticle | A cuticle (), or cuticula, is any of a variety of tough but flexible, non-mineral outer coverings of an organism, or parts of an organism, that provide protection. Various types of "cuticle" are non-homologous, differing in their origin, structure, function, and chemical composition.
Human anatomy
In human anatomy, "... | Biology and health sciences | Animal ontogeny | null |
18952853 | https://en.wikipedia.org/wiki/Agave | Agave | Agave (; ; ) is a genus of monocots native to the arid regions of the Americas. The genus is primarily known for its succulent and xerophytic species that typically form large rosettes of strong, fleshy leaves.
Many plants in this genus may be considered perennial, because they require several to many years to mature... | Biology and health sciences | Monocots | null |
18952860 | https://en.wikipedia.org/wiki/Transpiration | Transpiration | Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers. It is a passive process that requires no energy expense by the plant. Transpiration also cools plants, changes osmotic pressure of cells, and enables mass flow of mineral nutrients. ... | Biology and health sciences | Basics_3 | null |
18952932 | https://en.wikipedia.org/wiki/Hallucinogen | Hallucinogen | Hallucinogens are a large and diverse class of psychoactive drugs that can produce altered states of consciousness characterized by major alterations in thought, mood, and perception as well as other changes. Most hallucinogens can be categorized as either being psychedelics, dissociatives, or deliriants.
Etymology
Th... | Biology and health sciences | General concepts_2 | Health |
18952991 | https://en.wikipedia.org/wiki/Gila%20monster | Gila monster | The Gila monster (Heloderma suspectum, ) is a species of venomous lizard native to the Southwestern United States and the northwestern Mexican state of Sonora. It is a heavy, slow-moving reptile, up to long, and it is the only venomous lizard native to the United States. Its venomous close relatives, the four beaded ... | Biology and health sciences | Reptiles | null |
18953024 | https://en.wikipedia.org/wiki/Paleocene | Paleocene | The Paleocene ( ), or Palaeocene, is a geological epoch that lasted from about 66 to 56 million years ago (mya). It is the first epoch of the Paleogene Period in the modern Cenozoic Era. The name is a combination of the Ancient Greek palaiós meaning "old" and the Eocene Epoch (which succeeds the Paleocene), translatin... | Physical sciences | Geological timescale | Earth science |
18953991 | https://en.wikipedia.org/wiki/Bagheera%20kiplingi | Bagheera kiplingi | Bagheera kiplingi is a species of jumping spider found in Central America, including Mexico, Costa Rica, and Guatemala. It is the type species of the genus Bagheera, which includes three other species, including B. prosper. B. kiplingi is notable for its peculiar diet, which is mostly herbivorous. No other known specie... | Biology and health sciences | Spiders | Animals |
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