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3958005 | https://en.wikipedia.org/wiki/Availability%20factor | Availability factor | The availability factor of a power plant is the duration it achieves production of electricity divided by the duration that it was planned to produce electricity. In the field of reliability engineering, availability factor is known as operational availability, . The capacity factor of a plant includes numerous other f... | Technology | Concepts | null |
40083369 | https://en.wikipedia.org/wiki/Land | Land | Land, also known as dry land, ground, or earth, is the solid terrestrial surface of Earth not submerged by the ocean or another body of water. It makes up 29.2% of Earth's surface and includes all continents and islands. Earth's land surface is almost entirely covered by regolith, a layer of rock, soil, and minerals th... | Physical sciences | Geography | null |
33264696 | https://en.wikipedia.org/wiki/Stab%20wound | Stab wound | A stab wound is a specific form of penetrating trauma to the skin that results from a knife or a similar pointed object. While stab wounds are typically known to be caused by knives, they can also occur from a variety of implements, including broken bottles and ice picks. Most stabbings occur because of intentional vio... | Biology and health sciences | Types | Health |
24631368 | https://en.wikipedia.org/wiki/Tunable%20metamaterial | Tunable metamaterial | A tunable metamaterial is a metamaterial with a variable response to an incident electromagnetic wave. This includes remotely controlling how an incident electromagnetic wave (EM wave) interacts with a metamaterial. This translates into the capability to determine whether the EM wave is transmitted, reflected, or abs... | Physical sciences | Basics_3 | Physics |
1466489 | https://en.wikipedia.org/wiki/Neonatology | Neonatology | Neonatology is a subspecialty of pediatrics that consists of the medical care of newborn infants, especially the ill or premature newborn. It is a hospital-based specialty and is usually practised in neonatal intensive care units (NICUs). The principal patients of neonatologists are newborn infants who are ill or requi... | Biology and health sciences | Fields of medicine | Health |
1466591 | https://en.wikipedia.org/wiki/Rotary%20switch | Rotary switch | A rotary switch is a switch operated by rotation. These are often chosen when more than 2 positions are needed, such as a three-speed fan or a CB radio with multiple frequencies of reception or "channels".
A rotary switch consists of a spindle or "rotor" that has a contact arm or "spoke" which projects from its surfac... | Technology | Components | null |
1467948 | https://en.wikipedia.org/wiki/Problem%20solving | Problem solving | Problem solving is the process of achieving a goal by overcoming obstacles, a frequent part of most activities. Problems in need of solutions range from simple personal tasks (e.g. how to turn on an appliance) to complex issues in business and technical fields. The former is an example of simple problem solving (SPS) a... | Technology | General | null |
1467960 | https://en.wikipedia.org/wiki/Cobaltite | Cobaltite | Cobaltite is an arsenide and sulfide mineral with the mineral formula CoAsS. It is the naming mineral of the cobaltite group of minerals, whose members structurally resemble pyrite (FeS2).
History
Cobaltite was first described in 1797 by Klaproth. Its name stems from the contained element cobalt, whose name is attrib... | Physical sciences | Minerals | Earth science |
1468845 | https://en.wikipedia.org/wiki/Mud%20dauber | Mud dauber | Mud dauber (or "mud wasp") is a name commonly applied to a number of wasps from either the family Sphecidae or Crabronidae which build their nests from mud; this excludes members of the family Vespidae (especially the subfamily Eumeninae), which are instead referred to as "potter wasps". Mud daubers are variable in app... | Biology and health sciences | Hymenoptera | Animals |
1470034 | https://en.wikipedia.org/wiki/Snap%20pea | Snap pea | The snap pea, also known as the sugar snap pea, is an edible-pod pea with rounded pods and thick pod walls, in contrast to snow pea pods, which are flat with thin walls. The name mangetout (French for "eat all") can apply to snap peas and snow peas.
A snap pea named "butter pea" was described in French literature in t... | Biology and health sciences | Pulses | Plants |
1470503 | https://en.wikipedia.org/wiki/Paleoarchean | Paleoarchean | The Paleoarchean ( ), also spelled Palaeoarchaean (formerly known as the early Archean), is a geologic era within the Archean Eon. The name derives from Greek "Palaios" ancient. It spans the period of time . The era is defined chronometrically and is not referenced to a specific level of a rock section on Earth. The ea... | Physical sciences | Geological timescale | Earth science |
2127679 | https://en.wikipedia.org/wiki/Number%20density | Number density | The number density (symbol: n or ρN) is an intensive quantity used to describe the degree of concentration of countable objects (particles, molecules, phonons, cells, galaxies, etc.) in physical space: three-dimensional volumetric number density, two-dimensional areal number density, or one-dimensional linear number de... | Physical sciences | Mixture | Chemistry |
2128113 | https://en.wikipedia.org/wiki/Australopithecus%20garhi | Australopithecus garhi | Australopithecus garhi is a species of australopithecine from the Bouri Formation in the Afar Region of Ethiopia 2.6–2.5 million years ago (mya) during the Early Pleistocene. The first remains were described in 1999 based on several skeletal elements uncovered in the three years preceding. A. garhi was originally consi... | Biology and health sciences | Australopithecines | Biology |
29247528 | https://en.wikipedia.org/wiki/Earth%27s%20shadow | Earth's shadow | Earth's shadow (or Earth shadow) is the shadow that Earth itself casts through its atmosphere and into outer space, toward the antisolar point. During the twilight period (both early dusk and late dawn), the shadow's visible fringe – sometimes called the dark segment or twilight wedge – appears as a dark and diffuse ba... | Physical sciences | Solar System | Astronomy |
3966982 | https://en.wikipedia.org/wiki/Noise%20%28electronics%29 | Noise (electronics) | In electronics, noise is an unwanted disturbance in an electrical signal.
Noise generated by electronic devices varies greatly as it is produced by several different effects.
In particular, noise is inherent in physics and central to thermodynamics. Any conductor with electrical resistance will generate thermal noise... | Technology | Signal processing | null |
24644691 | https://en.wikipedia.org/wiki/Freshwater%20snail | Freshwater snail | Freshwater snails are gastropod mollusks that live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs to major rivers. The great majority of freshwater gastropods have a shell, wi... | Biology and health sciences | Gastropods | Animals |
26051975 | https://en.wikipedia.org/wiki/Cattle | Cattle | Cattle (Bos taurus) are large, domesticated, bovid ungulates widely kept as livestock. They are prominent modern members of the subfamily Bovinae and the most widespread species of the genus Bos. Mature female cattle are called cows and mature male cattle are bulls. Young female cattle are called heifers, young male ca... | Biology and health sciences | Biology | null |
2129702 | https://en.wikipedia.org/wiki/Phototube | Phototube | A phototube or photoelectric cell is a type of gas-filled or vacuum tube that is sensitive to light. Such a tube is more correctly called a 'photoemissive cell' to distinguish it from photovoltaic or photoconductive cells. Phototubes were previously more widely used but are now replaced in many applications by solid ... | Technology | Components | null |
2133664 | https://en.wikipedia.org/wiki/Rogun%20Dam | Rogun Dam | The Roghun Dam (; ) is an embankment dam under construction on the Vakhsh River in southern Tajikistan. The dam is situated 110 km from Dushanbe. It is one of the planned hydroelectric power plants of Vakhsh Cascade.
Construction of the dam began in the Soviet era, in 1976, but was abandoned in 1993 after the collapse... | Technology | Dams | null |
23170058 | https://en.wikipedia.org/wiki/Samsung%20Galaxy | Samsung Galaxy | Samsung Galaxy (; stylized as SΛMSUNG Galaxy since 2015 (except Japan where it omitted the Samsung branding up until 2023), previously stylized as Samsung GALAXY; abbreviated as SG) is a series of computing, Android mobile computing and wearable devices that are designed, manufactured and marketed by Samsung Electronic... | Technology | Specific hardware | null |
23173149 | https://en.wikipedia.org/wiki/Staphylococcus | Staphylococcus | Staphylococcus is a genus of Gram-positive bacteria in the family Staphylococcaceae from the order Bacillales. Under the microscope, they appear spherical (cocci), and form in grape-like clusters. Staphylococcus species are facultative anaerobic organisms (capable of growth both aerobically and anaerobically).
The nam... | Biology and health sciences | Gram-positive bacteria | Plants |
23174230 | https://en.wikipedia.org/wiki/Calf%20%28leg%29 | Calf (leg) | The calf (: calves; Latin: sura) is the back portion of the lower leg in human anatomy. The muscles within the calf correspond to the posterior compartment of the leg. The two largest muscles within this compartment are known together as the calf muscle and attach to the heel via the Achilles tendon. Several other, sma... | Biology and health sciences | Human anatomy | Health |
1471115 | https://en.wikipedia.org/wiki/Sandfly | Sandfly | Sandfly or sand fly is a colloquial name for any species or genus of flying, biting, blood-sucking dipteran (fly) encountered in sandy areas. In the United States, sandfly may refer to certain horse flies that are also known as "greenheads" (family Tabanidae), or to members of the family Ceratopogonidae. The bites usua... | Biology and health sciences | Flies (Diptera) | Animals |
1471182 | https://en.wikipedia.org/wiki/Crutch | Crutch | A crutch is a mobility aid that transfers weight from the legs to the upper body. It is often used by people who cannot use their legs to support their weight, for reasons ranging from short-term injuries to lifelong disabilities.
History
Crutches were used in ancient Egypt. In 1917, Emile Schlick patented the first c... | Technology | Mobility aids | null |
1471836 | https://en.wikipedia.org/wiki/Blood%20orange | Blood orange | The blood orange is a variety of orange with crimson, near blood-colored flesh. It is one of the sweet orange varieties (Citrus × sinensis). It is also known as the raspberry orange.
The dark flesh color is due to the presence of anthocyanins, a family of polyphenol pigments common to many flowers and fruit, but uncom... | Biology and health sciences | Citrus fruits | Plants |
1473803 | https://en.wikipedia.org/wiki/Pleurotus%20ostreatus | Pleurotus ostreatus | Pleurotus ostreatus, the oyster mushroom, oyster fungus, hiratake, or pearl oyster mushroom is a common edible mushroom.
It is one of the more commonly sought wild mushrooms, though it can also be cultivated on straw and other media.
Description
The mushroom has a broad, fan or oyster-shaped cap spanning ; natural sp... | Biology and health sciences | Edible fungi | null |
1474467 | https://en.wikipedia.org/wiki/Compton%20wavelength | Compton wavelength | The Compton wavelength is a quantum mechanical property of a particle, defined as the wavelength of a photon whose energy is the same as the rest energy of that particle (see mass–energy equivalence). It was introduced by Arthur Compton in 1923 in his explanation of the scattering of photons by electrons (a process kno... | Physical sciences | Quantum mechanics | Physics |
1474542 | https://en.wikipedia.org/wiki/Animal%20embryonic%20development | Animal embryonic development | In developmental biology, animal embryonic development, also known as animal embryogenesis, is the developmental stage of an animal embryo. Embryonic development starts with the fertilization of an egg cell (ovum) by a sperm cell (spermatozoon). Once fertilized, the ovum becomes a single diploid cell known as a zygote.... | Biology and health sciences | Animal reproduction | Biology |
1474961 | https://en.wikipedia.org/wiki/Adverse%20effect | Adverse effect | An adverse effect is an undesired harmful effect resulting from a medication or other intervention, such as surgery. An adverse effect may be termed a "side effect", when judged to be secondary to a main or therapeutic effect. The term complication is similar to adverse effect, but the latter is typically used in pharm... | Biology and health sciences | General concepts_2 | Health |
1475860 | https://en.wikipedia.org/wiki/Green%20bean | Green bean | Green beans are young, unripe fruits of various cultivars of the common bean (Phaseolus vulgaris), although immature or young pods of the runner bean (Phaseolus coccineus), yardlong bean (Vigna unguiculata subsp. sesquipedalis), and hyacinth bean (Lablab purpureus) are used in a similar way. Green beans are known by ma... | Biology and health sciences | Fabales | null |
33284883 | https://en.wikipedia.org/wiki/Tetraethyl%20pyrophosphate | Tetraethyl pyrophosphate | Tetraethyl pyrophosphate, abbreviated TEPP, is an organophosphate compound with the formula . It is the tetraethyl derivative of pyrophosphate (P2O74-). It is a colorless oil that solidifies near room temperature. It is used as an insecticide. The compound hydrolyzes rapidly.
Applications
TEPP is an insecticide to ap... | Technology | Pest and disease control | null |
5337437 | https://en.wikipedia.org/wiki/Gradient%20theorem | Gradient theorem | The gradient theorem, also known as the fundamental theorem of calculus for line integrals, says that a line integral through a gradient field can be evaluated by evaluating the original scalar field at the endpoints of the curve. The theorem is a generalization of the second fundamental theorem of calculus to any curv... | Mathematics | Multivariable and vector calculus | null |
40119056 | https://en.wikipedia.org/wiki/Crustacean | Crustacean | Crustaceans (from Latin meaning: "those with shells" or "crusted ones") are invertebrate animals that constitute one group of arthropods that are a part of the subphylum Crustacea (), a large, diverse group of mainly aquatic arthropods including decapods (shrimps, prawns, crabs, lobsters and crayfish), seed shrimp, bra... | Biology and health sciences | Biology | null |
26064288 | https://en.wikipedia.org/wiki/Lebesgue%20integral | Lebesgue integral | In mathematics, the integral of a non-negative function of a single variable can be regarded, in the simplest case, as the area between the graph of that function and the axis. The Lebesgue integral, named after French mathematician Henri Lebesgue, is one way to make this concept rigorous and to extend it to more gene... | Mathematics | Integral calculus | null |
31747219 | https://en.wikipedia.org/wiki/Chromebook | Chromebook | Chromebook (sometimes stylized in lowercase as chromebook) is a line of laptops, desktops, tablets and all-in-one computers that run ChromeOS, a proprietary operating system developed by Google.
Chromebooks are optimised for web access. They also run Android apps, Linux applications, and Progressive web apps which do... | Technology | Specific hardware | null |
44503418 | https://en.wikipedia.org/wiki/Cretaceous%E2%80%93Paleogene%20extinction%20event | Cretaceous–Paleogene extinction event | The Cretaceous–Paleogene (K–Pg) extinction event, also known as the K–T extinction, was the mass extinction of three-quarters of the plant and animal species on Earth approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs. Most other tetrapods weighing more than also became exti... | Physical sciences | Geological history | null |
3968480 | https://en.wikipedia.org/wiki/Disturbance%20%28ecology%29 | Disturbance (ecology) | In ecology, a disturbance is a temporary change in environmental conditions that causes a pronounced change in an ecosystem. Disturbances often act quickly and with great effect, to alter the physical structure or arrangement of biotic and abiotic elements. A disturbance can also occur over a long period of time and ca... | Biology and health sciences | Ecology | Biology |
3969819 | https://en.wikipedia.org/wiki/Evolution%20of%20insects | Evolution of insects | The most recent understanding of the evolution of insects is based on studies of the following branches of science: molecular biology, insect morphology, paleontology, insect taxonomy, evolution, embryology, bioinformatics and scientific computing. It is estimated that the class of insects originated on Earth about 480... | Biology and health sciences | Basics_4 | Biology |
30777141 | https://en.wikipedia.org/wiki/WASH | WASH | WASH (or WatSan, WaSH; stemming from the first letters of "water, sanitation and hygiene") is a sector in development cooperation, or within local governments, that provides water, sanitation, and hygiene services to communities. The main purposes of providing access to WASH services are to achieve public health gains,... | Biology and health sciences | Fields of medicine | Health |
30778041 | https://en.wikipedia.org/wiki/Particle | Particle | In the physical sciences, a particle (or corpuscule in older texts) is a small localized object which can be described by several physical or chemical properties, such as volume, density, or mass. They vary greatly in size or quantity, from subatomic particles like the electron, to microscopic particles like atoms and ... | Physical sciences | Particle physics: General | null |
30780223 | https://en.wikipedia.org/wiki/Coptotermes%20gestroi | Coptotermes gestroi | Coptotermes gestroi, commonly known as the Asian subterranean termite is a small species of termite that lives underground. Both this species and the Formosan subterranean termite (Coptotermes formosanus) are destructive pests native to Asia, but have spread to other parts of the world including the United States. In A... | Biology and health sciences | Cockroaches & Termites (Blattodea) | Animals |
41560816 | https://en.wikipedia.org/wiki/Acid%20anhydride | Acid anhydride | An acid anhydride is a type of chemical compound derived by the removal of water molecules from an acid.
In organic chemistry, organic acid anhydrides contain the functional group . Organic acid anhydrides often form when one equivalent of water is removed from two equivalents of an organic acid in a dehydration react... | Physical sciences | Concepts | Chemistry |
41561062 | https://en.wikipedia.org/wiki/Base%20anhydride | Base anhydride | A base anhydride is an oxide of a chemical element from group 1 or 2 (the alkali metals and alkaline earth metals, respectively). They are obtained by removing water from the corresponding hydroxide base. If water is added to a base anhydride, a corresponding hydroxide salt can be [re]-formed.
Base anhydrides are not ... | Physical sciences | Concepts | Chemistry |
38807433 | https://en.wikipedia.org/wiki/Deep-focus%20earthquake | Deep-focus earthquake | A deep-focus earthquake in seismology (also called a plutonic earthquake) is an earthquake with a hypocenter depth exceeding 300 km. They occur almost exclusively at convergent boundaries in association with subducted oceanic lithosphere. They occur along a dipping tabular zone beneath the subduction zone known as the ... | Physical sciences | Seismology | Earth science |
29287934 | https://en.wikipedia.org/wiki/Hydrophile | Hydrophile | A hydrophile is a molecule or other molecular entity that is attracted to water molecules and tends to be dissolved by water.
In contrast, hydrophobes are not attracted to water and may seem to be repelled by it. Hygroscopics are attracted to water, but are not dissolved by water.
Molecules
A hydrophilic molecule or ... | Physical sciences | Supramolecular chemistry | Chemistry |
29289333 | https://en.wikipedia.org/wiki/Foreskin | Foreskin | In male human anatomy, the foreskin, also known as the prepuce (), is the double-layered fold of skin, mucosal and muscular tissue at the distal end of the human penis that covers the glans and the urinary meatus. The foreskin is attached to the glans by an elastic band of tissue, known as the frenulum. The outer skin ... | Biology and health sciences | Reproductive system | Biology |
24670148 | https://en.wikipedia.org/wiki/Herschel%20graph | Herschel graph | In graph theory, a branch of mathematics, the Herschel graph is a bipartite undirected graph with 11 vertices and 18 edges. It is a polyhedral graph (the graph of a convex polyhedron), and is the smallest polyhedral graph that does not have a Hamiltonian cycle, a cycle passing through all its vertices. It is named afte... | Mathematics | Graph theory | null |
5339220 | https://en.wikipedia.org/wiki/Automobile%20repair%20shop | Automobile repair shop | An automobile repair shop (also known regionally as a garage or a workshop) is an establishment where automobiles are repaired by auto mechanics and technicians. The customer interface is typically a service advisor, traditionally called a service writer.
Types
Automotive garages and repair shops can be divided into... | Technology | Concepts of ground transport | null |
5340299 | https://en.wikipedia.org/wiki/Glass%20knifefish | Glass knifefish | Glass knifefishes are fishes in the family Sternopygidae in the order Gymnotiformes. Species are also known as rattail knifefishes.
These fishes inhabit freshwater streams and rivers in Panama and South America. Many species are specialized for life in the deep (more than ) swiftly moving waters of large river channel... | Biology and health sciences | Gymnotiformes | Animals |
5340351 | https://en.wikipedia.org/wiki/Crystal%20engineering | Crystal engineering | Crystal engineering studies the design and synthesis of solid-state structures with desired properties through deliberate control of intermolecular interactions. It is an interdisciplinary academic field, bridging solid-state and supramolecular chemistry.
The main engineering strategies currently in use are hydrogen... | Physical sciences | Crystallography | Physics |
43062570 | https://en.wikipedia.org/wiki/Mesotherm | Mesotherm | A mesotherm (from Greek μέσος mesos "intermediate" and thermē "heat") is a type of animal with a thermoregulatory strategy intermediate to cold-blooded ectotherms and warm-blooded endotherms.
Definition
Mesotherms have two basic characteristics:
Elevation of body temperature via metabolic production of heat.
Weak o... | Biology and health sciences | Basics | Biology |
3976493 | https://en.wikipedia.org/wiki/Vanadate | Vanadate | In chemistry, a vanadate is an anionic coordination complex of vanadium. Often vanadate refers to oxoanions of vanadium, most of which exist in its highest oxidation state of +5. The complexes and are referred to as hexacyanovanadate(III) and nonachlorodivanadate(III), respectively.
A simple vanadate ion is the tetr... | Physical sciences | Metallic oxyanions | Chemistry |
3978897 | https://en.wikipedia.org/wiki/Soil%20texture | Soil texture | Soil texture is a classification instrument used both in the field and laboratory to determine soil classes based on their physical texture. Soil texture can be determined using qualitative methods such as texture by feel, and quantitative methods such as the hydrometer method based on Stokes' law. Soil texture has ag... | Physical sciences | Soil science | Earth science |
21694580 | https://en.wikipedia.org/wiki/Interstellar%20object | Interstellar object | An interstellar object is an astronomical object (such as an asteroid, a comet, or a rogue planet, but not a star or stellar remnant) in interstellar space that is not gravitationally bound to a star. This term can also be applied to an object that is on an interstellar trajectory but is temporarily passing close to a ... | Physical sciences | Astronomy basics | Astronomy |
33307786 | https://en.wikipedia.org/wiki/Supercapacitor | Supercapacitor | A supercapacitor (SC), also called an ultracapacitor, is a high-capacity capacitor, with a capacitance value much higher than solid-state capacitors but with lower voltage limits. It bridges the gap between electrolytic capacitors and rechargeable batteries. It typically stores 10 to 100 times more energy per unit volu... | Technology | Components | null |
38815769 | https://en.wikipedia.org/wiki/Stellar%20core | Stellar core | A stellar core is the extremely hot, dense region at the center of a star. For an ordinary main sequence star, the core region is the volume where the temperature and pressure conditions allow for energy production through thermonuclear fusion of hydrogen into helium. This energy in turn counterbalances the mass of the... | Physical sciences | Stellar astronomy | Astronomy |
1476259 | https://en.wikipedia.org/wiki/Megaloptera | Megaloptera | Megaloptera is an order of insects. It contains the alderflies, dobsonflies and fishflies, and there are about 300 known species.
The order's name comes from Ancient Greek, from mega- (μέγα-) "large" + pteryx (πτέρυξ) "wing", in reference to the large, clumsy wings of these insects. Megaloptera are relatively unknown ... | Biology and health sciences | Insects: General | Animals |
1476975 | https://en.wikipedia.org/wiki/Dangerous%20goods | Dangerous goods | Dangerous goods (DG) are substances that are a risk to health, safety, property or the environment during transport. Certain dangerous goods that pose risks even when not being transported are known as hazardous materials (syllabically abbreviated as HAZMAT or hazmat). An example for dangerous goods is hazardous waste ... | Physical sciences | Basics: General | Chemistry |
1477183 | https://en.wikipedia.org/wiki/Lancetfish | Lancetfish | Lancetfishes are large oceanic predatory ray-finned fishes in the genus Alepisaurus ("scaleless lizard") in the monogeneric family Alepisauridae.
Lancetfishes grow up to in length. Very little is known about their biology, though they are widely distributed in all oceans, except the polar seas. Specimens have been r... | Biology and health sciences | Aulopiformes | Animals |
1477664 | https://en.wikipedia.org/wiki/Fort%20Peck%20Dam | Fort Peck Dam | The Fort Peck Dam is the highest of six major dams along the Missouri River, located in northeast Montana in the United States, near Glasgow, and adjacent to the community of Fort Peck. At in length and over in height, it is the largest hydraulically filled dam in the United States, and creates Fort Peck Lake, the fi... | Technology | Dams | null |
1478144 | https://en.wikipedia.org/wiki/Cyclopentane | Cyclopentane | Cyclopentane (also called C pentane) is a highly flammable alicyclic hydrocarbon with chemical formula C5H10 and CAS number 287-92-3, consisting of a ring of five carbon atoms each bonded with two hydrogen atoms above and below the plane. It is a colorless liquid with a petrol-like odor. Its freezing point is −94 °C an... | Physical sciences | Aliphatic hydrocarbons | Chemistry |
1480601 | https://en.wikipedia.org/wiki/Power%20cable | Power cable | A power cable is an electrical cable, an assembly of one or more electrical conductors, usually held together with an overall sheath. The assembly is used for transmission of electrical power. Power cables may be installed as permanent wiring within buildings, buried in the ground, run overhead, or exposed. Power cable... | Technology | Power transmission | null |
26096048 | https://en.wikipedia.org/wiki/Infestation | Infestation | Infestation is the state of being invaded or overrun by pests or parasites. It can also refer to the actual organisms living on or within a host.
Terminology
In general, the term "infestation" refers to parasitic diseases caused by animals such as arthropods (i.e. mites, ticks, and lice) and worms, but excluding (exc... | Biology and health sciences | Helminthic diseases and infestations | Health |
5348550 | https://en.wikipedia.org/wiki/Evolution%20of%20molluscs | Evolution of molluscs | The evolution of the molluscs is the way in which the Mollusca, one of the largest groups of invertebrate animals, evolved. This phylum includes gastropods, bivalves, scaphopods, cephalopods, and several other groups.
The fossil record of mollusks is relatively complete, and they are well represented in most fossil-bea... | Biology and health sciences | Basics_4 | Biology |
5353692 | https://en.wikipedia.org/wiki/Metriorhynchidae | Metriorhynchidae | Metriorhynchidae is an extinct family of specialized, aquatic metriorhynchoid crocodyliforms from the Middle Jurassic to the Early Cretaceous period (Bajocian to early Aptian) of Europe, North America and South America. The name Metriorhynchidae was coined by the Austrian zoologist Leopold Fitzinger in 1843. The group ... | Biology and health sciences | Other prehistoric archosaurs | Animals |
1481498 | https://en.wikipedia.org/wiki/Personal%20flotation%20device | Personal flotation device | A personal flotation device (PFD; also referred to as a life jacket, life preserver, life belt, Mae West, life vest, life saver, cork jacket, buoyancy aid or flotation suit) is a flotation device in the form of a vest or suit that is worn by a user to prevent the wearer from drowning in a body of water. The device will... | Technology | Basics_7 | null |
1481660 | https://en.wikipedia.org/wiki/Anomura | Anomura | Anomura (sometimes Anomala) is a group of decapod crustaceans, including hermit crabs and others. Although the names of many anomurans include the word crab, all true crabs are in the sister group to the Anomura, the Brachyura (the two groups together form the clade Meiura).
Description
The name Anomura derives from a... | Biology and health sciences | Crabs and hermit crabs | Animals |
1481873 | https://en.wikipedia.org/wiki/Copper%28II%29%20chloride | Copper(II) chloride | Copper(II) chloride, also known as cupric chloride, is an inorganic compound with the chemical formula . The monoclinic yellowish-brown anhydrous form slowly absorbs moisture to form the orthorhombic blue-green dihydrate , with two water molecules of hydration. It is industrially produced for use as a co-catalyst in th... | Physical sciences | Halide salts | Chemistry |
1481886 | https://en.wikipedia.org/wiki/Cannabis%20%28drug%29 | Cannabis (drug) | Cannabis (), commonly known as marijuana (), weed, and pot, among other names, is a non-chemically uniform drug from the cannabis plant. Native to Central or South Asia, the cannabis plant has been used as a drug for both recreational and entheogenic purposes and in various traditional medicines for centuries. Tetrahyd... | Biology and health sciences | Drugs and pharmacology | null |
1483403 | https://en.wikipedia.org/wiki/Carbon%20planet | Carbon planet | A carbon planet is a hypothetical type of planet that contains more carbon than oxygen. Carbon is the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen.
Marc Kuchner and Sara Seager coined the term "carbon planet" in 2005 and investigated such planets following the suggestion of K... | Physical sciences | Planetary science | Astronomy |
3983697 | https://en.wikipedia.org/wiki/Belt%20of%20Venus | Belt of Venus | The Belt of Venusalso called Venus's Girdle, the antitwilight arch, or antitwilightis an atmospheric phenomenon visible shortly before sunrise or after sunset, during civil twilight. It is a pinkish glow that surrounds the observer, extending roughly 10–20° above the horizon. It appears opposite to the afterglow, which... | Physical sciences | Celestial mechanics | Astronomy |
3988315 | https://en.wikipedia.org/wiki/Late%20Paleozoic%20icehouse | Late Paleozoic icehouse | The late Paleozoic icehouse, also known as the Late Paleozoic Ice Age (LPIA) and formerly known as the Karoo ice age, was an ice age that began in the Late Devonian and ended in the Late Permian, occurring from 360 to 255 million years ago (Mya), and large land-based ice sheets were then present on Earth's surface. It ... | Physical sciences | Events | Earth science |
23210152 | https://en.wikipedia.org/wiki/Tarpon | Tarpon | Tarpon are fish of the genus Megalops. They are the only members of the family Megalopidae. Of the two species, one (M. atlanticus) is native to the Atlantic, and the other (M. cyprinoides) to the Indo-Pacific Oceans.
Species and habitats
The two species of tarpon are M. atlanticus (Atlantic tarpon) and M. cyprinoid... | Biology and health sciences | Anguilliformes | Animals |
23215561 | https://en.wikipedia.org/wiki/Gram%20per%20cubic%20centimetre | Gram per cubic centimetre | The gram per cubic centimetre is a unit of density in the CGS system, and is commonly used in chemistry. It is defined by dividing the CGS unit of mass, the gram, by the CGS unit of volume, the cubic centimetre. The official SI symbols are g/cm3, g·cm−3, or g cm−3. It is equivalent to the units gram per millilitre (g/m... | Physical sciences | Density | Basics and measurement |
29320146 | https://en.wikipedia.org/wiki/Event%20horizon | Event horizon | In astrophysics, an event horizon is a boundary beyond which events cannot affect an outside observer. Wolfgang Rindler coined the term in the 1950s.
In 1784, John Michell proposed that gravity can be strong enough in the vicinity of massive compact objects that even light cannot escape. At that time, the Newtonian th... | Physical sciences | Basics_3 | null |
29322627 | https://en.wikipedia.org/wiki/Completeness%20of%20the%20real%20numbers | Completeness of the real numbers | Completeness is a property of the real numbers that, intuitively, implies that there are no "gaps" (in Dedekind's terminology) or "missing points" in the real number line. This contrasts with the rational numbers, whose corresponding number line has a "gap" at each irrational value. In the decimal number system, comp... | Mathematics | Real analysis | null |
30826411 | https://en.wikipedia.org/wiki/Walnut | Walnut | A walnut is the edible seed of any tree of the genus Juglans (family Juglandaceae), particularly the Persian or English walnut, Juglans regia. They are accessory fruit because the outer covering of the fruit is technically an involucre and thus not morphologically part of the carpel; this means it cannot be a drupe but... | Biology and health sciences | Fagales | null |
27973777 | https://en.wikipedia.org/wiki/ISCC%E2%80%93NBS%20system | ISCC–NBS system | The ISCC–NBS System of Color Designation is a system for naming colors based on a set of 13 basic color terms and a small set of adjective modifiers. It was first established in the 1930s by a joint effort of the Inter-Society Color Council (ISCC), made up of delegates from various American trade organizations, and the... | Physical sciences | Basics | Physics |
21732545 | https://en.wikipedia.org/wiki/Aerospace%20engineering | Aerospace engineering | Aerospace engineering is the primary field of engineering concerned with the development of aircraft and spacecraft. It has two major and overlapping branches: aeronautical engineering and astronautical engineering. Avionics engineering is similar, but deals with the electronics side of aerospace engineering.
"Aeron... | Technology | Disciplines | null |
5358570 | https://en.wikipedia.org/wiki/Coxeter%20graph | Coxeter graph | In the mathematical field of graph theory, the Coxeter graph is a 3-regular graph with 28 vertices and 42 edges. It is one of the 13 known cubic distance-regular graphs. It is named after Harold Scott MacDonald Coxeter.
Properties
The Coxeter graph has chromatic number 3, chromatic index 3, radius 4, diameter 4 and gi... | Mathematics | Graph theory | null |
5363452 | https://en.wikipedia.org/wiki/Nurse%20shark | Nurse shark | The nurse shark (Ginglymostoma cirratum) is an elasmobranch fish in the family Ginglymostomatidae. The conservation status of the nurse shark is globally assessed as Vulnerable in the IUCN List of Threatened Species. They are considered to be a species of least concern in the United States and in The Bahamas, but consi... | Biology and health sciences | Sharks | null |
23218956 | https://en.wikipedia.org/wiki/Vector%20%28mathematics%20and%20physics%29 | Vector (mathematics and physics) | In mathematics and physics, vector is a term that refers to quantities that cannot be expressed by a single number (a scalar), or to elements of some vector spaces. They have to be expressed by both magnitude and direction.
Historically, vectors were introduced in geometry and physics (typically in mechanics) for quan... | Mathematics | Linear algebra | null |
3991810 | https://en.wikipedia.org/wiki/Berry%20%28botany%29 | Berry (botany) | In botany, a berry is a fleshy fruit without a stone (pit) produced from a single flower containing one ovary. Berries so defined include grapes, currants, and tomatoes, as well as cucumbers, eggplants (aubergines), persimmons and bananas, but exclude certain fruits that meet the culinary definition of berries, such as... | Biology and health sciences | Plant: General | null |
3992446 | https://en.wikipedia.org/wiki/Effigia | Effigia | Effigia is an extinct genus of shuvosaurid known from the Late Triassic of New Mexico, south-western USA. With a bipedal stance, long neck, and a toothless beaked skull, Effigia and other shuvosaurids bore a resemblance to the ornithomimid dinosaurs of the Cretaceous Period. However, shuvosaurids were not dinosaurs, bu... | Biology and health sciences | Other prehistoric archosaurs | Animals |
3994623 | https://en.wikipedia.org/wiki/Medulloblastoma | Medulloblastoma | Medulloblastoma is a common type of primary brain cancer in children. It originates in the part of the brain that is towards the back and the bottom, on the floor of the skull, in the cerebellum, or posterior fossa.
The brain is divided into two main parts, the larger cerebrum on top and the smaller cerebellum below t... | Biology and health sciences | Cancer | Health |
3998129 | https://en.wikipedia.org/wiki/Grey%20junglefowl | Grey junglefowl | The gray junglefowl (Gallus sonneratii), also known as Sonnerat's junglefowl, is one of the wild ancestors of the domestic chicken together with the red junglefowl and other junglefowls.
The species epithet commemorates the French explorer Pierre Sonnerat. Local names include Komri in Rajasthan, Geera kur or Parda kom... | Biology and health sciences | Galliformes | Animals |
24706093 | https://en.wikipedia.org/wiki/Photonic%20metamaterial | Photonic metamaterial | A photonic metamaterial (PM), also known as an optical metamaterial, is a type of electromagnetic metamaterial, that interacts with light, covering terahertz (THz), infrared (IR) or visible wavelengths. The materials employ a periodic, cellular structure.
The subwavelength periodicity distinguishes photonic metamateri... | Physical sciences | Basics_3 | Physics |
34880278 | https://en.wikipedia.org/wiki/Separation%20process | Separation process | A separation process is a method that converts a mixture or a solution of chemical substances into two or more distinct product mixtures, a scientific process of separating two or more substances in order to obtain purity. At least one product mixture from the separation is enriched in one or more of the source mixture... | Physical sciences | Separation processes | Chemistry |
34888669 | https://en.wikipedia.org/wiki/Endospore%20staining | Endospore staining | Endospore staining is a technique used in bacteriology to identify the presence of endospores in a bacterial sample. Within bacteria, endospores are protective structures used to survive extreme conditions, including high temperatures making them highly resistant to chemicals. Endospores contain little or no ATP which ... | Biology and health sciences | Basics_3 | Biology |
41597450 | https://en.wikipedia.org/wiki/Poisson%20point%20process | Poisson point process | In probability theory, statistics and related fields, a Poisson point process (also known as: Poisson random measure, Poisson random point field and Poisson point field) is a type of mathematical object that consists of points randomly located on a mathematical space with the essential feature that the points occur ind... | Mathematics | Probability | null |
5369676 | https://en.wikipedia.org/wiki/Paleo-Tethys%20Ocean | Paleo-Tethys Ocean | The Paleo-Tethys or Palaeo-Tethys Ocean was an ocean located along the northern margin of the paleocontinent Gondwana that started to open during the Middle Cambrian, grew throughout the Paleozoic, and finally closed during the Late Triassic; existing for about 400 million years.
Paleo-Tethys was a precursor to the Te... | Physical sciences | Paleogeography | Earth science |
5377010 | https://en.wikipedia.org/wiki/Anurognathidae | Anurognathidae | Anurognathidae is a family of small, short-tailed pterosaurs that lived in Europe, Asia, and possibly North America during the Jurassic and Cretaceous periods. Five genera are known: Anurognathus, from the Late Jurassic of Germany; Jeholopterus, from the Middle to Late Jurassic of China; Dendrorhynchoides, from the Mid... | Biology and health sciences | Pterosaurs | Animals |
37405934 | https://en.wikipedia.org/wiki/Wild%20Bactrian%20camel | Wild Bactrian camel | The wild Bactrian camel (Camelus ferus) is an endangered species of camel endemic to Northwest China and southwestern Mongolia. It is closely related but not ancestral to the domestic Bactrian camel (Camelus bactrianus). Genetic studies have established it as a separate species which diverged from the Bactrian camel ab... | Biology and health sciences | Camelidae | Animals |
24712184 | https://en.wikipedia.org/wiki/Igneous%20rock | Igneous rock | Igneous rock ( ), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rocks are formed through the cooling and solidification of magma or lava.
The magma can be derived from partial melts of existing rocks in either a planet's mantle or crust. Typically, the mel... | Physical sciences | Petrology | null |
23229753 | https://en.wikipedia.org/wiki/Coconut%20crab | Coconut crab | The coconut crab (Birgus latro) is a terrestrial species of giant hermit crab, and is also known as the robber crab or palm thief. It is the largest terrestrial arthropod known, with a weight of up to . The distance from the tip of one leg to the tip of another can be as wide as . It is found on islands across the Indi... | Biology and health sciences | Crabs and hermit crabs | Animals |
40167806 | https://en.wikipedia.org/wiki/Kilonova | Kilonova | A kilonova (also called a macronova) is a transient astronomical event that occurs in a compact binary system when two neutron stars or a neutron star and a black hole merge. These mergers are thought to produce gamma-ray bursts and emit bright electromagnetic radiation, called "kilonovae", due to the radioactive decay... | Physical sciences | Stellar astronomy | Astronomy |
3999979 | https://en.wikipedia.org/wiki/Fulgoridae | Fulgoridae | The family Fulgoridae is a large group of hemipteran insects, especially abundant and diverse in the tropics, containing over 125 genera worldwide. They are mostly of moderate to large size, many with a superficial resemblance to Lepidoptera due to their brilliant and varied coloration. Various genera and species (espe... | Biology and health sciences | Hemiptera (true bugs) | Animals |
4004214 | https://en.wikipedia.org/wiki/Palaeotherium | Palaeotherium | Palaeotherium is an extinct genus of equoid that lived in Europe and possibly the Middle East from the Middle Eocene to the Early Oligocene. It is the type genus of the Palaeotheriidae, a group exclusive to the Palaeogene that was closest in relation to the Equidae, which contains horses plus their closest relatives an... | Biology and health sciences | Perissodactyla | Animals |
26137572 | https://en.wikipedia.org/wiki/Plant%20litter | Plant litter | Plant litter (also leaf litter, tree litter, soil litter, litterfall or duff) is dead plant material (such as leaves, bark, needles, twigs, and cladodes) that have fallen to the ground. This detritus or dead organic material and its constituent nutrients are added to the top layer of soil, commonly known as the litter ... | Physical sciences | Soil science | Earth science |
5381102 | https://en.wikipedia.org/wiki/Ammonium%20ferric%20citrate | Ammonium ferric citrate | Ammonium ferric citrate (also known as ferric ammonium citrate or ammoniacal ferrous citrate) has the formula . The iron in this compound is trivalent. All three carboxyl groups and the central hydroxyl group of citric acid are deprotonated. A distinguishing feature of this compound is that it is very soluble in water,... | Physical sciences | Citrates | Chemistry |
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