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273642 | https://en.wikipedia.org/wiki/Ultraproduct | Ultraproduct | The ultraproduct is a mathematical construction that appears mainly in abstract algebra and mathematical logic, in particular in model theory and set theory. An ultraproduct is a quotient of the direct product of a family of structures. All factors need to have the same signature. The ultrapower is the special case of ... | Mathematics | Model theory | null |
273665 | https://en.wikipedia.org/wiki/Little%20egret | Little egret | The little egret (Egretta garzetta) is a species of small heron in the family Ardeidae. It is a white bird with a slender black beak, long black legs and, in the western race, yellow feet. As an aquatic bird, it feeds in shallow water and on land, consuming a variety of small creatures. It breeds colonially, often with... | Biology and health sciences | Pelecanimorphae | Animals |
273679 | https://en.wikipedia.org/wiki/Astronomical%20spectroscopy | Astronomical spectroscopy | Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, ultraviolet, X-ray, infrared and radio waves that radiate from stars and other celestial objects. A stellar spectrum can reveal many properties of stars... | Physical sciences | Basics | Astronomy |
273706 | https://en.wikipedia.org/wiki/Pallas%27s%20cat | Pallas's cat | The Pallas's cat (Otocolobus manul), also known as the manul, is a small wild cat with long and dense light grey fur, and rounded ears set low on the sides of the head. Its head-and-body length ranges from with a long bushy tail. It is well camouflaged and adapted to the cold continental climate in its native range,... | Biology and health sciences | Felines | Animals |
273978 | https://en.wikipedia.org/wiki/Bandage | Bandage | A bandage is a piece of material used either to support a medical device such as a dressing or splint, or on its own to provide support for the movement of a part of the body. When used with a dressing, the dressing is applied directly on a wound, and a bandage is used to hold the dressing in place. Other bandages are ... | Technology | Equipment | null |
273993 | https://en.wikipedia.org/wiki/Stack%20%28abstract%20data%20type%29 | Stack (abstract data type) | In computer science, a stack is an abstract data type that serves as a collection of elements with two main operations:
Push, which adds an element to the collection, and
Pop, which removes the most recently added element.
Additionally, a peek operation can, without modifying the stack, return the value of the last e... | Mathematics | Data structures and types | null |
273997 | https://en.wikipedia.org/wiki/Stack%20%28geology%29 | Stack (geology) | A stack or sea stack is a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast, formed by wave erosion. Stacks are formed over time by wind and water, processes of coastal geomorphology. They are formed when part of a headland is eroded by hydraulic action, whic... | Physical sciences | Oceanic and coastal landforms | Earth science |
274115 | https://en.wikipedia.org/wiki/Lockheed%20Constellation | Lockheed Constellation | The Lockheed Constellation ("Connie") is a propeller-driven, four-engined airliner built by Lockheed Corporation starting in 1943. The Constellation series was the first civil airliner family to enter widespread use equipped with a pressurized cabin, enabling it to fly well above most bad weather, thus significantly im... | Technology | Specific aircraft_2 | null |
274192 | https://en.wikipedia.org/wiki/Genetic%20linkage | Genetic linkage | Genetic linkage is the tendency of DNA sequences that are close together on a chromosome to be inherited together during the meiosis phase of sexual reproduction. Two genetic markers that are physically near to each other are unlikely to be separated onto different chromatids during chromosomal crossover, and are there... | Biology and health sciences | Genetics | Biology |
274227 | https://en.wikipedia.org/wiki/Sunbird | Sunbird | Sunbirds and spiderhunters make up the family Nectariniidae of passerine birds. They are small, slender passerines from the Old World, usually with downward-curved bills. Many are brightly coloured, often with iridescent feathers, particularly in the males. Many species also have especially long tail feathers. Their ra... | Biology and health sciences | Passerida | null |
274231 | https://en.wikipedia.org/wiki/Cepheus%20%28constellation%29 | Cepheus (constellation) | Cepheus is a constellation in the deep northern sky, named after Cepheus, a king of Aethiopia in Greek mythology. It is one of the 48 constellations listed by the second century astronomer Ptolemy, and it remains one of the 88 constellations in the modern times.
The constellation's brightest star is Alderamin (Alpha ... | Physical sciences | Other | Astronomy |
274471 | https://en.wikipedia.org/wiki/Gunboat | Gunboat | A gunboat is a naval watercraft designed for the express purpose of carrying one or more guns to bombard coastal targets, as opposed to those military craft designed for naval warfare, or for ferrying troops or supplies.
History
Pre-steam era
In the age of sail, a gunboat was usually a small undecked vessel carrying ... | Technology | Naval warfare | null |
274675 | https://en.wikipedia.org/wiki/Maillard%20reaction | Maillard reaction | The Maillard reaction ( ; ) is a chemical reaction between amino acids and reducing sugars to create melanoidins, the compounds that give browned food its distinctive flavor. Seared steaks, fried dumplings, cookies and other kinds of biscuits, breads, toasted marshmallows, falafel and many other foods undergo this reac... | Physical sciences | Organic reactions | Chemistry |
274788 | https://en.wikipedia.org/wiki/Roe%20deer | Roe deer | The roe deer (Capreolus capreolus), also known as the roe, western roe deer, or European roe, is a species of deer. The male of the species is sometimes referred to as a roebuck. The roe is a small deer, reddish and grey-brown, and well-adapted to cold environments. The species is widespread in Europe, from the Mediter... | Biology and health sciences | Deer | Animals |
274810 | https://en.wikipedia.org/wiki/Scientific%20instrument | Scientific instrument | A scientific instrument is a device or tool used for scientific purposes, including the study of both natural phenomena and theoretical research.
History
Historically, the definition of a scientific instrument has varied, based on usage, laws, and historical time period. Before the mid-nineteenth century such tools we... | Technology | General | null |
274833 | https://en.wikipedia.org/wiki/Instant%20camera | Instant camera | An instant camera is a camera which uses self-developing film to create a chemically developed print shortly after taking the picture. Polaroid Corporation pioneered (and patented) consumer-friendly instant cameras and film, and were followed by various other manufacturers.
The invention of commercially viable instant... | Technology | Photography | null |
274951 | https://en.wikipedia.org/wiki/Mesoproterozoic | Mesoproterozoic | The Mesoproterozoic Era is a geologic era that occurred from . The Mesoproterozoic was the first era of Earth's history for which a fairly definitive geological record survives. Continents existed during the preceding era (the Paleoproterozoic), but little is known about them. The continental masses of the Mesoproteroz... | Physical sciences | Geological timescale | Earth science |
275006 | https://en.wikipedia.org/wiki/Autocannon | Autocannon | An autocannon, automatic cannon or machine cannon is a fully automatic gun that is capable of rapid-firing large-caliber ( or more) armour-piercing, explosive or incendiary shells, as opposed to the smaller-caliber kinetic projectiles (bullets) fired by a machine gun. Autocannons have a longer effective range and grea... | Technology | Firearms | null |
275223 | https://en.wikipedia.org/wiki/Serval | Serval | The serval (Leptailurus serval) is a wild cat native to Africa. It is widespread in sub-Saharan countries, where it inhabits grasslands, wetlands, moorlands and bamboo thickets. Across its range, it occurs in protected areas, and hunting it is either prohibited or regulated in range countries.
It is the sole member of... | Biology and health sciences | Felines | Animals |
275334 | https://en.wikipedia.org/wiki/Hermit%20crab | Hermit crab | Hermit crabs are anomuran decapod crustaceans of the superfamily Paguroidea that have adapted to occupy empty scavenged mollusc shells to protect their fragile exoskeletons. There are over 800 species of hermit crab, most of which possess an asymmetric abdomen concealed by a snug-fitting shell. Hermit crabs' soft (non-... | Biology and health sciences | Crabs and hermit crabs | Animals |
275509 | https://en.wikipedia.org/wiki/Palliative%20care | Palliative care | Palliative care (derived from the Latin root , meaning "to cloak") is an interdisciplinary medical caregiving approach aimed at optimising quality of life and mitigating or reducing suffering among people with serious, complex, and often terminal illnesses. Within the published literature, many definitions of palliativ... | Biology and health sciences | Medical procedures | null |
275549 | https://en.wikipedia.org/wiki/GNU%20Project | GNU Project | The GNU Project () is a free software, mass collaboration project announced by Richard Stallman on September 27, 1983. Its goal is to give computer users freedom and control in their use of their computers and computing devices by collaboratively developing and publishing software that gives everyone the rights to free... | Technology | Computer software | null |
15822342 | https://en.wikipedia.org/wiki/Continental%20fragment | Continental fragment | Continental crustal fragments, partly synonymous with microcontinents, are pieces of continents that have broken off from main continental masses to form distinct islands that are often several hundred kilometers from their place of origin.
Causes
Continental fragments and microcontinent crustal compositions are very... | Physical sciences | Tectonics | Earth science |
4839019 | https://en.wikipedia.org/wiki/Frequency%20%28statistics%29 | Frequency (statistics) | In statistics, the frequency or absolute frequency of an event is the number of times the observation has occurred/been recorded in an experiment or study. These frequencies are often depicted graphically or tabular form.
Types
The cumulative frequency is the total of the absolute frequencies of all events at or bel... | Mathematics | Statistics | null |
12956141 | https://en.wikipedia.org/wiki/Squilla%20mantis | Squilla mantis | Squilla mantis is a species of mantis shrimp found in shallow coastal areas of the Mediterranean Sea and the Eastern Atlantic Ocean: it is also known as "pacchero" or "canocchia". Its abundance has led to it being the only commercially fished mantis shrimp in the Mediterranean.
Description
Individuals grow up to long... | Biology and health sciences | Malacostraca | Animals |
484727 | https://en.wikipedia.org/wiki/American%20Brahman | American Brahman | The Brahman is an American breed of zebuine-taurine hybrid beef cattle. It was bred in the United States from 1885 using cattle originating in India, imported at various times from the United Kingdom, India, and Brazil. These were mainly Gir, Guzerá and Nelore stock, with some Indu-Brasil, Krishna Valley and Ongole. Th... | Biology and health sciences | Cattle | null |
484824 | https://en.wikipedia.org/wiki/American%20alligator | American alligator | The American alligator (Alligator mississippiensis), sometimes referred to as a gator, or common alligator is a large crocodilian reptile native to the Southeastern United States and a small section of northeastern Mexico. It is one of the two extant species in the genus Alligator, and is larger than the only other liv... | Biology and health sciences | Crocodilia | Animals |
484939 | https://en.wikipedia.org/wiki/Egg | Egg | An egg is an organic vessel grown by an animal to carry a possibly fertilized egg cell (a zygote) and to incubate from it an embryo within the egg until the embryo has become an animal fetus that can survive on its own, at which point the animal hatches.
Most arthropods, vertebrates (excluding live-bearing mammals), a... | Biology and health sciences | Biology | null |
484942 | https://en.wikipedia.org/wiki/Gelada | Gelada | The gelada (Theropithecus gelada, , ), sometimes called the bleeding-heart monkey or the gelada baboon, is a species of Old World monkey found only in the Ethiopian Highlands, living at elevations of above sea level. It is the only living member of the genus Theropithecus, a name derived from the Greek root words for ... | Biology and health sciences | Old World monkeys | Animals |
486432 | https://en.wikipedia.org/wiki/Processor%20register | Processor register | A processor register is a quickly accessible location available to a computer's processor. Registers usually consist of a small amount of fast storage, although some registers have specific hardware functions, and may be read-only or write-only. In computer architecture, registers are typically addressed by mechanisms ... | Technology | Computer hardware | null |
486436 | https://en.wikipedia.org/wiki/Rotational%E2%80%93vibrational%20spectroscopy | Rotational–vibrational spectroscopy | Rotational–vibrational spectroscopy is a branch of molecular spectroscopy that is concerned with infrared and Raman spectra of molecules in the gas phase. Transitions involving changes in both vibrational and rotational states can be abbreviated as rovibrational (or ro-vibrational) transitions. When such transitions em... | Physical sciences | Molecular physics | Physics |
486527 | https://en.wikipedia.org/wiki/Astrophysics%20Data%20System | Astrophysics Data System | The SAO/NASA Astrophysics Data System (ADS) is a digital library portal for researchers on astronomy and physics, operated for NASA by the Smithsonian Astrophysical Observatory. ADS maintains three bibliographic collections containing over 15 million records, including all arXiv e-prints. Abstracts and full-text of maj... | Physical sciences | Databases | Astronomy |
486873 | https://en.wikipedia.org/wiki/Cowpea | Cowpea | The cowpea (Vigna unguiculata) is an annual herbaceous legume from the genus Vigna. Its tolerance for sandy soil and low rainfall have made it an important crop in the semiarid regions across Africa and Asia. It requires very few inputs, as the plant's root nodules are able to fix atmospheric nitrogen, making it a valu... | Biology and health sciences | Pulses | Plants |
487061 | https://en.wikipedia.org/wiki/Vigna | Vigna | Vigna is a genus of plants in the legume family, Fabaceae, with a pantropical distribution. It includes some well-known cultivated species, including many types of beans. Some are former members of the genus Phaseolus. According to Hortus Third, Vigna differs from Phaseolus in biochemistry and pollen structure, and in... | Biology and health sciences | Pulses | Plants |
487143 | https://en.wikipedia.org/wiki/Midbrain | Midbrain | The midbrain or mesencephalon is the uppermost portion of the brainstem connecting the diencephalon and cerebrum with the pons. It consists of the cerebral peduncles, tegmentum, and tectum.
It is functionally associated with vision, hearing, motor control, sleep and wakefulness, arousal (alertness), and temperature re... | Biology and health sciences | Nervous system | Biology |
487315 | https://en.wikipedia.org/wiki/Weak%20base | Weak base | A weak base is a base that, upon dissolution in water, does not dissociate completely, so that the resulting aqueous solution contains only a small proportion of hydroxide ions and the concerned basic radical, and a large proportion of undissociated molecules of the base.
pH, Kb, and Kw
Bases yield solutions in which ... | Physical sciences | Concepts | Chemistry |
487493 | https://en.wikipedia.org/wiki/Group%208%20element | Group 8 element | |-
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Group 8 is a group (column) of chemical elements in the periodic table. It consists of iron (Fe), ruthenium (Ru), osmium (Os) and hassium (Hs). "Group 8" is the modern standard designation for this ... | Physical sciences | Group 8 | Chemistry |
487497 | https://en.wikipedia.org/wiki/Group%209%20element | Group 9 element | |-
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Group 9, by modern IUPAC numbering, is a group (column) of chemical elements in the d-block of the periodic table. Members of Group 9 include cobalt (Co), rhodium (Rh), iridium (Ir) and meitnerium (... | Physical sciences | Group 9 | Chemistry |
487510 | https://en.wikipedia.org/wiki/Group%2012%20element | Group 12 element | |-
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Group 12, by modern IUPAC numbering, is a group of chemical elements in the periodic table. It includes zinc (Zn), cadmium (Cd), mercury (Hg), and copernicium (Cn). Formerly this group was named IIB... | Physical sciences | Group 12 | Chemistry |
487518 | https://en.wikipedia.org/wiki/Group%2010%20element | Group 10 element | |-
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Group 10, numbered by current IUPAC style, is the group of chemical elements in the periodic table that consists of nickel (Ni), palladium (Pd), platinum (Pt), and darmstadtium (Ds). All are d-block... | Physical sciences | Group 10 | Chemistry |
487691 | https://en.wikipedia.org/wiki/Dental%20floss | Dental floss | Dental floss is a cord of thin filaments, typically made of nylon or silk, used in interdental cleaning to remove food and dental plaque from between teeth or places a toothbrush has difficulty reaching or is unable to reach. Its regular use as part of oral cleaning is intended to maintain oral health.
Use of floss is... | Biology and health sciences | Hygiene products | Health |
25271733 | https://en.wikipedia.org/wiki/Dental%20trauma | Dental trauma | Dental trauma refers to trauma (injury) to the teeth and/or periodontium (gums, periodontal ligament, alveolar bone), and nearby soft tissues such as the lips, tongue, etc. The study of dental trauma is called dental traumatology.
Types
Dental injuries
Dental injuries include:
Enamel infraction
Enamel fracture
Ena... | Biology and health sciences | Types | Health |
1898396 | https://en.wikipedia.org/wiki/Chrome%20yellow | Chrome yellow | Chrome yellow is a bright, warm yellow pigment that has been used in art, fashion, and industry. It is the premier orange pigment for many applications.
Production of chrome yellow and related pigments
The raw pigment precipitates as a fine solid upon mixing lead(II) salts and a source of chromate. Approximately 90,00... | Physical sciences | Metallic oxyanions | Chemistry |
1898401 | https://en.wikipedia.org/wiki/Arc%20length | Arc length | Arc length is the distance between two points along a section of a curve. Development of a formulation of arc length suitable for applications to mathematics and the sciences is a focus of calculus. In the most basic formulation of arc length for a parametric curve (thought of as the trajectory of a particle), the ar... | Mathematics | Measurement | null |
1898647 | https://en.wikipedia.org/wiki/Singlet%20oxygen | Singlet oxygen | Singlet oxygen, systematically named dioxygen(singlet) and dioxidene, is a gaseous inorganic chemical with the formula O=O (also written as or ), which is in a quantum state where all electrons are spin paired. It is kinetically unstable at ambient temperature, but the rate of decay is slow.
The lowest excited state ... | Physical sciences | Group 16 | Chemistry |
1899565 | https://en.wikipedia.org/wiki/Hedenbergite | Hedenbergite | Hedenbergite, CaFeSi2O6, is the iron rich end member of the pyroxene group having a monoclinic crystal system. The mineral is extremely rarely found as a pure substance, and usually has to be synthesized in a lab. It was named in 1819 after M.A. Ludwig Hedenberg, who was the first to define hedenbergite as a mineral. C... | Physical sciences | Silicate minerals | Earth science |
1902021 | https://en.wikipedia.org/wiki/Herrerasaurus | Herrerasaurus | Herrerasaurus is likely a genus of saurischian dinosaur from the Late Triassic period. Measuring long and weighing around , this genus was one of the earliest dinosaurs from the fossil record. Its name means "Herrera's lizard", after the rancher who discovered the first specimen in 1958 in South America. All known fos... | Biology and health sciences | Dinosaurs | Animals |
6332859 | https://en.wikipedia.org/wiki/Intensive%20care%20unit | Intensive care unit | An intensive care unit (ICU), also known as an intensive therapy unit or intensive treatment unit (ITU) or critical care unit (CCU), is a special department of a hospital or health care facility that provides intensive care medicine.
An intensive care unit (ICU) was defined by the task force of the World Federation of... | Biology and health sciences | Health facilities | Health |
2635607 | https://en.wikipedia.org/wiki/Bulldog%20type | Bulldog type | Bulldogs are a type of dog that were traditionally used for the blood sports of baiting and dog fighting, but today are kept for other purposes, including companion dogs, guard dogs and catch dogs. Bulldogs are typically stocky, powerful, square-built animals with large, strong, brachycephalic-type muzzles. "Bull" is a... | Biology and health sciences | Dogs | Animals |
2636111 | https://en.wikipedia.org/wiki/Pelagic%20fish | Pelagic fish | Pelagic fish live in the pelagic zone of ocean or lake waters—being neither close to the bottom nor near the shore—in contrast with demersal fish that live on or near the bottom, and reef fish that are associated with coral reefs.
The marine pelagic environment is the largest aquatic habitat on Earth, occupying 1,370 ... | Biology and health sciences | Fishes by habitat | Animals |
2636840 | https://en.wikipedia.org/wiki/Greenschist | Greenschist | Greenschists are metamorphic rocks that formed under the lowest temperatures and pressures usually produced by regional metamorphism, typically and 2–10 kilobars (). Greenschists commonly have an abundance of green minerals such as chlorite, serpentine, and epidote, and platy minerals such as muscovite and platy serpe... | Physical sciences | Metamorphic rocks | Earth science |
820253 | https://en.wikipedia.org/wiki/Helmholtz%20decomposition | Helmholtz decomposition | In physics and mathematics, the Helmholtz decomposition theorem or the fundamental theorem of vector calculus states that certain differentiable vector fields can be resolved into the sum of an irrotational (curl-free) vector field and a solenoidal (divergence-free) vector field. In physics, often only the decompositio... | Mathematics | Multivariable and vector calculus | null |
821741 | https://en.wikipedia.org/wiki/Lever%20tumbler%20lock | Lever tumbler lock | A lever tumbler lock is a type of lock that uses a set of levers to prevent the bolt from moving in the lock. In the simplest form of these, lifting the tumbler above a certain height will allow the bolt to slide past.
The number of levers may vary, but is usually an odd number for a lock that can be opened from each ... | Technology | Mechanisms | null |
822082 | https://en.wikipedia.org/wiki/European%20dark%20bee | European dark bee | The Apis mellifera mellifera (commonly known as the European dark bee) is a subspecies of the western honey bee, evolving in central Asia, with a proposed origin of the Tien Shan Mountains and later migrating into eastern and then northern Europe after the last ice age from 9,000BC onwards. Its original range included ... | Biology and health sciences | Hymenoptera | Animals |
822244 | https://en.wikipedia.org/wiki/Medicinal%20plants | Medicinal plants | [[File:Swertia perennis 230705.jpg|thumb|Swertia perennis found in high mountain places of Nepal]]
Medicinal plants, also called medicinal herbs, have been discovered and used in traditional medicine practices since prehistoric times. Plants synthesize hundreds of chemical compounds for various functions, including de... | Biology and health sciences | Alternative and traditional medicine | Health |
822307 | https://en.wikipedia.org/wiki/Maglev | Maglev | Maglev (derived from magnetic levitation) is a system of rail transport whose rolling stock is levitated by electromagnets rather than rolled on wheels, eliminating rolling resistance.
Compared to conventional railways, maglev trains can have higher top speeds, superior acceleration and deceleration, lower maintenance... | Technology | Rail and cable transport | null |
822575 | https://en.wikipedia.org/wiki/Biogeochemistry | Biogeochemistry | Biogeochemistry is the scientific discipline that involves the study of the chemical, physical, geological, and biological processes and reactions that govern the composition of the natural environment (including the biosphere, the cryosphere, the hydrosphere, the pedosphere, the atmosphere, and the lithosphere). In pa... | Physical sciences | Geochemistry | Earth science |
824083 | https://en.wikipedia.org/wiki/Cefazolin | Cefazolin | Cefazolin, also known as cefazoline and cephazolin, is a first-generation cephalosporin antibiotic used for the treatment of a number of bacterial infections. Specifically it is used to treat cellulitis, urinary tract infections, pneumonia, endocarditis, joint infection, and biliary tract infections. It is also used to... | Biology and health sciences | Antibiotics | Health |
825162 | https://en.wikipedia.org/wiki/Dog%20crossbreed | Dog crossbreed | Dog crossbreeds (sometimes called designer dogs) are dogs which have been intentionally bred from two or more recognized dog breeds. They are not dogs with no purebred ancestors, but are not otherwise recognised as breeds in their own right, and do not necessarily breed true.
Dog crossbreeds are combinations of lineag... | Biology and health sciences | Dogs | Animals |
825332 | https://en.wikipedia.org/wiki/Purebred | Purebred | Purebreds are like cultivars of an animal species achieved through the process of selective breeding. When the lineage of a purebred animal is recorded, that animal is said to be pedigreed. Purebreds breed true-to-type which means the progeny of like-to-like purebred parents will carry the same phenotype, or observable... | Technology | Animal husbandry | null |
825694 | https://en.wikipedia.org/wiki/Eyepiece | Eyepiece | An eyepiece, or ocular lens, is a type of lens that is attached to a variety of optical devices such as telescopes and microscopes. It is named because it is usually the lens that is closest to the eye when someone looks through an optical device to observe an object or sample. The objective lens or mirror collects lig... | Technology | Telescope | null |
825748 | https://en.wikipedia.org/wiki/Propylene | Propylene | Propylene, also known as propene, is an unsaturated organic compound with the chemical formula . It has one double bond, and is the second simplest member of the alkene class of hydrocarbons. It is a colorless gas with a faint petroleum-like odor.
Propylene is a product of combustion from forest fires, cigarette smoke... | Physical sciences | Hydrocarbons | null |
826216 | https://en.wikipedia.org/wiki/Galaxy%20morphological%20classification | Galaxy morphological classification | Galaxy morphological classification is a system used by astronomers to divide galaxies into groups based on their visual appearance. There are several schemes in use by which galaxies can be classified according to their morphologies, the most famous being the Hubble sequence, devised by Edwin Hubble and later expanded... | Physical sciences | Galaxy morphological classification | null |
826258 | https://en.wikipedia.org/wiki/Scintillation%20%28physics%29 | Scintillation (physics) | In condensed matter physics, scintillation ( ) is the physical process where a material, called a scintillator, emits ultraviolet or visible light under excitation from high energy photons (X-rays or gamma rays) or energetic particles (such as electrons, alpha particles, neutrons, or ions). See scintillator and scintil... | Physical sciences | Electromagnetic radiation | Physics |
826277 | https://en.wikipedia.org/wiki/Ericsson%20cycle | Ericsson cycle | The Ericsson cycle is named after inventor John Ericsson who designed and built many unique heat engines based on various thermodynamic cycles. He is credited with inventing two unique heat engine cycles and developing practical engines based on these cycles. His first cycle is now known as the closed Brayton cycle, ... | Physical sciences | Thermodynamics | Physics |
826435 | https://en.wikipedia.org/wiki/Pannotia | Pannotia | Pannotia (from Greek: pan-, "all", -nótos, "south"; meaning "all southern land"), also known as the Vendian supercontinent, Greater Gondwana, and the Pan-African supercontinent, was a relatively short-lived Neoproterozoic supercontinent that formed at the end of the Precambrian during the Pan-African orogeny (650–500 M... | Physical sciences | Paleogeography | Earth science |
826723 | https://en.wikipedia.org/wiki/Angular%20diameter | Angular diameter | The angular diameter, angular size, apparent diameter, or apparent size is an angular separation (in units of angle) describing how large a sphere or circle appears from a given point of view. In the vision sciences, it is called the visual angle, and in optics, it is the angular aperture (of a lens). The angular diame... | Physical sciences | Basics | Astronomy |
826903 | https://en.wikipedia.org/wiki/Melastomataceae | Melastomataceae | Melastomataceae () is a family of dicotyledonous flowering plants found mostly in the tropics (two-thirds of the genera are from the New World tropics) comprising c. 175 genera and c. 5115 known species. Melastomes are annual or perennial herbs, shrubs, or small trees.
Description
The leaves of melastomes are somewhat... | Biology and health sciences | Myrtales | Plants |
826997 | https://en.wikipedia.org/wiki/Regression%20analysis | Regression analysis | In statistical modeling, regression analysis is a set of statistical processes for estimating the relationships between a dependent variable (often called the outcome or response variable, or a label in machine learning parlance) and one or more error-free independent variables (often called regressors, predictors, cov... | Mathematics | Statistics and probability | null |
827490 | https://en.wikipedia.org/wiki/Tilefish | Tilefish | Tilefishes are mostly small perciform marine fish comprising the family Malacanthidae. They are usually found in sandy areas, especially near coral reefs. They have a long life span, up to 46 years (females) and 39 years (males).
Commercial fisheries exist for the largest species, making them important food fish. Ho... | Biology and health sciences | Acanthomorpha | Animals |
3588331 | https://en.wikipedia.org/wiki/Scalar%20%28mathematics%29 | Scalar (mathematics) | A scalar is an element of a field which is used to define a vector space.
In linear algebra, real numbers or generally elements of a field are called scalars and relate to vectors in an associated vector space through the operation of scalar multiplication (defined in the vector space), in which a vector can be multipl... | Mathematics | Linear algebra | null |
3588425 | https://en.wikipedia.org/wiki/Scalar%20%28physics%29 | Scalar (physics) | Scalar quantities or simply scalars are physical quantities that can be described by a single pure number (a scalar, typically a real number), accompanied by a unit of measurement, as in "10cm" (ten centimeters).
Examples of scalar quantities are length, mass, charge, volume, and time.
Scalars may represent the magnit... | Physical sciences | Physics basics: General | Physics |
3594512 | https://en.wikipedia.org/wiki/River%20island | River island | A river island is any exposed landmass surrounded by river water. Properly defined, it excludes shoals between seasonally varying flows and may exclude semi-coastal islands in river deltas such as Marajó.
These islands result from changes in the course of a river. Such changes may be caused by interactions with a trib... | Physical sciences | Oceanic and coastal landforms | Earth science |
20927048 | https://en.wikipedia.org/wiki/Amoebiasis | Amoebiasis | Amoebiasis, or amoebic dysentery, is an infection of the intestines caused by a parasitic amoeba Entamoeba histolytica. Amoebiasis can be present with no, mild, or severe symptoms. Symptoms may include lethargy, loss of weight, colonic ulcerations, abdominal pain, diarrhea, or bloody diarrhea. Complications can include... | Biology and health sciences | Protozoan infections | Health |
130312 | https://en.wikipedia.org/wiki/Storm | Storm | A storm is any disturbed state of the natural environment or the atmosphere of an astronomical body. It may be marked by significant disruptions to normal conditions such as strong wind, tornadoes, hail, thunder and lightning (a thunderstorm), heavy precipitation (snowstorm, rainstorm), heavy freezing rain (ice storm),... | Physical sciences | Storms | null |
26780222 | https://en.wikipedia.org/wiki/Earth%20analog | Earth analog | An Earth analog, also called an Earth twin or second Earth, is a planet or moon with environmental conditions similar to those found on Earth. The term Earth-like planet is also used, but this term may refer to any terrestrial planet.
The possibility is of particular interest to astrobiologists and astronomers under r... | Physical sciences | Planetary science | Astronomy |
19792392 | https://en.wikipedia.org/wiki/Humid%20subtropical%20climate | Humid subtropical climate | A humid subtropical climate is a subtropical-temperate climate type, characterized by long and hot summers, and cool to mild winters. These climates normally lie on the southeast side of all continents (except Antarctica), generally between latitudes 25° and 40° and are located poleward from adjacent tropical climates,... | Physical sciences | Climates | Earth science |
19799359 | https://en.wikipedia.org/wiki/Nasal%20fracture | Nasal fracture | A nasal fracture, commonly referred to as a broken nose, is a fracture of one of the bones of the nose. Symptoms may include bleeding, swelling, bruising, and an inability to breathe through the nose. They may be complicated by other facial fractures or a septal hematoma.
The most common causes include assault, tra... | Biology and health sciences | Types | Health |
18676889 | https://en.wikipedia.org/wiki/Tropical%20rainforest%20climate | Tropical rainforest climate | A tropical rainforest climate is a tropical climate sub-type usually found within 10 to 15 degrees latitude of the equator. There are some other areas at higher latitudes, such as Bermuda, the coast of southernmost Florida, United States (Fort Lauderdale, West Palm Beach), and Okinawa, Japan that fall into the tropical... | Physical sciences | Climates | Earth science |
27135340 | https://en.wikipedia.org/wiki/Seaweed%20farming | Seaweed farming | Seaweed farming or kelp farming is the practice of cultivating and harvesting seaweed. In its simplest form farmers gather from natural beds, while at the other extreme farmers fully control the crop's life cycle.
The seven most cultivated taxa are Eucheuma spp., Kappaphycus alvarezii, Gracilaria spp., Saccharina jap... | Technology | Aquaculture | null |
1276437 | https://en.wikipedia.org/wiki/Soil%20mechanics | Soil mechanics | Soil mechanics is a branch of soil physics and applied mechanics that describes the behavior of soils. It differs from fluid mechanics and solid mechanics in the sense that soils consist of a heterogeneous mixture of fluids (usually air and water) and particles (usually clay, silt, sand, and gravel) but soil may also c... | Physical sciences | Soil mechanics | Physics |
1277350 | https://en.wikipedia.org/wiki/Names%20of%20the%20days%20of%20the%20week | Names of the days of the week | In many languages, the names given to the seven days of the week are derived from the names of the classical planets in Hellenistic astronomy, which were in turn named after contemporary deities, a system introduced by the Sumerians and later adopted by the Babylonians from whom the Roman Empire adopted the system duri... | Technology | Days of the week | null |
1277893 | https://en.wikipedia.org/wiki/Thermogravimetric%20analysis | Thermogravimetric analysis | Thermogravimetric analysis or thermal gravimetric analysis (TGA) is a method of thermal analysis in which the mass of a sample is measured over time as the temperature changes. This measurement provides information about physical phenomena, such as phase transitions, absorption, adsorption and desorption; as well as ch... | Physical sciences | Chemical methods | Chemistry |
1278389 | https://en.wikipedia.org/wiki/Related%20rates | Related rates | In differential calculus, related rates problems involve finding a rate at which a quantity changes by relating that quantity to other quantities whose rates of change are known. The rate of change is usually with respect to time. Because science and engineering often relate quantities to each other, the methods of r... | Mathematics | Differential calculus | null |
12974846 | https://en.wikipedia.org/wiki/Cadaver | Cadaver | A cadaver, often known as a corpse, is a dead human body. Cadavers are used by medical students, physicians and other scientists to study anatomy, identify disease sites, determine causes of death, and provide tissue to repair a defect in a living human being. Students in medical school study and dissect cadavers as a ... | Biology and health sciences | Human anatomy | Health |
4848707 | https://en.wikipedia.org/wiki/Therocephalia | Therocephalia | Therocephalia is an extinct clade of eutheriodont therapsids (mammals and their close relatives) from the Permian and Triassic periods. The therocephalians ("beast-heads") are named after their large skulls, which, along with the structure of their teeth, suggest that they were carnivores. Like other non-mammalian syna... | Biology and health sciences | Proto-mammals | Animals |
4855071 | https://en.wikipedia.org/wiki/Dispersion%20%28chemistry%29 | Dispersion (chemistry) | A dispersion is a system in which distributed particles of one material are dispersed in a continuous phase of another material. The two phases may be in the same or different states of matter.
Dispersions are classified in a number of different ways, including how large the particles are in relation to the particles... | Physical sciences | Chemical mixtures: General | null |
22438472 | https://en.wikipedia.org/wiki/Conium%20maculatum | Conium maculatum | Conium maculatum, known as hemlock (British English) or poison hemlock (American English), is a highly poisonous flowering plant in the carrot family Apiaceae, native to Europe and North Africa. It is herbaceous without woody parts and has a biennial lifecycle. A hardy plant capable of living in a variety of environmen... | Biology and health sciences | Apiales | Plants |
6341469 | https://en.wikipedia.org/wiki/Pedophilia | Pedophilia | Pedophilia (alternatively spelled paedophilia) is a psychiatric disorder in which an adult or older adolescent experiences a primary or exclusive sexual attraction to prepubescent children. Although girls typically begin the process of puberty at age 10 or 11, and boys at age 11 or 12, psychiatric diagnostic criteria f... | Biology and health sciences | Mental disorder | null |
8327348 | https://en.wikipedia.org/wiki/Earthquake%20early%20warning%20system | Earthquake early warning system | An earthquake warning system or earthquake alarm system is a system of accelerometers, seismometers, communication, computers, and alarms that is devised for rapidly notifying adjoining regions of a substantial earthquake once one begins. This is not the same as earthquake prediction, which is currently not capable of ... | Physical sciences | Seismology | Earth science |
8330236 | https://en.wikipedia.org/wiki/Hiroshima%20Electric%20Railway | Hiroshima Electric Railway | is a Japanese transportation company established on June 18, 1910, that operates streetcars and buses in and around Hiroshima Prefecture. It is known as for short.
The company's rolling stock includes an eclectic range of trams manufactured from across Japan and Europe, earning it the nickname "The Moving Streetcar M... | Technology | Japan | null |
8331759 | https://en.wikipedia.org/wiki/Human%20body%20temperature | Human body temperature | Normal human body temperature (normothermia, euthermia) is the typical temperature range found in humans. The normal human body temperature range is typically stated as .
Human body temperature varies. It depends on sex, age, time of day, exertion level, health status (such as illness and menstruation), what part of t... | Biology and health sciences | Diagnostics | Health |
27139928 | https://en.wikipedia.org/wiki/Antozonite | Antozonite | Antozonite (historically known as Stinkspat, Stinkfluss, Stinkstein, Stinkspar and fetid fluorite) is a radioactive fluorite variety first found in Wölsendorf, Bavaria, in 1841, and named in 1862.
It is characterized by the presence of multiple inclusions containing elemental fluorine; when the crystals are crushed or... | Physical sciences | Minerals | Earth science |
20932853 | https://en.wikipedia.org/wiki/Roystonea%20regia | Roystonea regia | Roystonea regia, commonly known as the royal palm, Cuban royal palm, or Florida royal palm, is a species of palm native to Mexico, the Caribbean, Florida, and parts of Central America. A large and attractive palm, it has been planted throughout the tropics and subtropics as an ornamental tree. Although it is sometimes ... | Biology and health sciences | Arecales (inc. Palms) | Plants |
20936195 | https://en.wikipedia.org/wiki/Acromegaly | Acromegaly | Acromegaly is a disorder that results in excess growth of certain parts of the human body. It is caused by excess growth hormone (GH) after the growth plates have closed. The initial symptom is typically enlargement of the hands and feet. There may also be an enlargement of the forehead, jaw, and nose. Other symptoms m... | Biology and health sciences | Specific diseases | Health |
20940345 | https://en.wikipedia.org/wiki/Rabbit%20fish | Rabbit fish | Chimaera monstrosa, also known as the rabbit fish or rat fish, is a northeast Atlantic and Mediterranean species of cartilaginous fish in the family Chimaeridae. The rabbit fish is known for its characteristically large head and small, tapering body. With large eyes, nostrils, and tooth plates, the head gives them a ra... | Biology and health sciences | Chimaeriformes | Animals |
20941658 | https://en.wikipedia.org/wiki/Anchiornis | Anchiornis | Anchiornis is a genus of small, four-winged paravian dinosaurs, with only one known species, the type species Anchiornis huxleyi, named for its similarity to modern birds. The Latin name Anchiornis derives from a Greek word meaning "near bird", and huxleyi refers to Thomas Henry Huxley, a contemporary of Charles Darwin... | Biology and health sciences | Theropods | Animals |
19817681 | https://en.wikipedia.org/wiki/Tardigrade | Tardigrade | Tardigrades (), known colloquially as water bears or moss piglets, are a phylum of eight-legged segmented micro-animals. They were first described by the German zoologist Johann August Ephraim Goeze in 1773, who called them . In 1776, the Italian biologist Lazzaro Spallanzani named them Tardigrada, which means 'slow w... | Biology and health sciences | Ecdysozoa | null |
19818280 | https://en.wikipedia.org/wiki/Deuterostome | Deuterostome | Deuterostomes (from Greek: ) are bilaterian animals of the superphylum Deuterostomia (), typically characterized by their anus forming before the mouth during embryonic development. Deuterostomia is further divided into four phyla: Chordata, Echinodermata, Hemichordata, and the extinct Vetulicolia known from Cambrian f... | Biology and health sciences | General classifications | Animals |
19818410 | https://en.wikipedia.org/wiki/Phoronid | Phoronid | Phoronids (scientific name Phoronida, sometimes called horseshoe worms) are a small phylum of marine animals that filter-feed with a lophophore (a "crown" of tentacles), and build upright tubes of chitin to support and protect their soft bodies. They live in most of the oceans and seas, including the Arctic Ocean but e... | Biology and health sciences | Lophotrochozoa | Animals |
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