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61577 | https://en.wikipedia.org/wiki/Electrical%20resistance%20and%20conductance | Electrical resistance and conductance | The electrical resistance of an object is a measure of its opposition to the flow of electric current. Its reciprocal quantity is , measuring the ease with which an electric current passes. Electrical resistance shares some conceptual parallels with mechanical friction. The SI unit of electrical resistance is the ohm (... | Physical sciences | Electrical circuits | null |
61580 | https://en.wikipedia.org/wiki/Electrical%20resistivity%20and%20conductivity | Electrical resistivity and conductivity | Electrical resistivity (also called volume resistivity or specific electrical resistance) is a fundamental specific property of a material that measures its electrical resistance or how strongly it resists electric current. A low resistivity indicates a material that readily allows electric current. Resistivity is comm... | Physical sciences | Electrodynamics | Physics |
61604 | https://en.wikipedia.org/wiki/Tradescantia | Tradescantia | Tradescantia () is a genus of 85 species of herbaceous perennial wildflowers in the family Commelinaceae, native to the Americas from southern Canada to northern Argentina, including the West Indies. Members of the genus are known by many common names, including inchplant, wandering jew, spiderwort, dayflower and trad.... | Biology and health sciences | Commelinales | Plants |
61692 | https://en.wikipedia.org/wiki/PC%20Card | PC Card | PC Card is a parallel peripheral interface for laptop computers and PDAs. The PCMCIA originally introduced the 16-bit ISA-based PCMCIA Card in 1990, but renamed it to PC Card in March 1995 to avoid confusion with the name of the organization. The CardBus PC Card was introduced as a 32-bit version of the original PC Car... | Technology | Computer hardware | null |
61697 | https://en.wikipedia.org/wiki/Aye-aye | Aye-aye | The aye-aye (Daubentonia madagascariensis) is a long-fingered lemur, a strepsirrhine primate native to Madagascar with rodent-like teeth that perpetually grow and a special thin middle finger that they can use to catch grubs and larvae out of tree trunks.
It is the world's largest nocturnal primate. It is characterize... | Biology and health sciences | Strepsirrhini | Animals |
61700 | https://en.wikipedia.org/wiki/Sahelanthropus | Sahelanthropus | Sahelanthropus is an extinct genus of hominid dated to about during the Late Miocene. The type species, Sahelanthropus tchadensis, was first announced in 2002, based mainly on a partial cranium, nicknamed Toumaï, discovered in northern Chad.
The definitive phylogenetic position of Sahelanthropus within hominids is un... | Biology and health sciences | Australopithecines | Biology |
61701 | https://en.wikipedia.org/wiki/Venn%20diagram | Venn diagram | A Venn diagram is a widely used diagram style that shows the logical relation between sets, popularized by John Venn (1834–1923) in the 1880s. The diagrams are used to teach elementary set theory, and to illustrate simple set relationships in probability, logic, statistics, linguistics and computer science. A Venn diag... | Mathematics | Discrete mathematics | null |
61708 | https://en.wikipedia.org/wiki/Shrub | Shrub | A shrub or bush is a small-to-medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees by their multiple stems and shorter height, less than tall. Small shrubs, less than 2 m (6.6 ft... | Biology and health sciences | Plant: General | null |
61762 | https://en.wikipedia.org/wiki/Class%20%28biology%29 | Class (biology) | In biological classification, class () is a taxonomic rank, as well as a taxonomic unit, a taxon, in that rank. It is a group of related taxonomic orders. Other well-known ranks in descending order of size are life, domain, kingdom, phylum, order, family, genus, and species, with class ranking between phylum and order... | Biology and health sciences | Taxonomic rank | Biology |
61763 | https://en.wikipedia.org/wiki/Order%20%28biology%29 | Order (biology) | Order () is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. An immediately higher rank, superorder, is somet... | Biology and health sciences | Taxonomic rank | Biology |
61836 | https://en.wikipedia.org/wiki/Treponema%20pallidum | Treponema pallidum | Treponema pallidum, formerly known as Spirochaeta pallida, is a microaerophilic, gram-negative, spirochaete bacterium with subspecies that cause the diseases syphilis, bejel (also known as endemic syphilis), and yaws. It is known to be transmitted only among humans and baboons. T. pallidum can enter the host through mu... | Biology and health sciences | Spirochaetes | Plants |
61837 | https://en.wikipedia.org/wiki/Neisseria%20gonorrhoeae | Neisseria gonorrhoeae | Neisseria gonorrhoeae, also known as gonococcus (singular) or gonococci (plural), is a species of Gram-negative diplococci bacteria first isolated by Albert Neisser in 1879. An obligate human pathogen, it primarily colonizes the mucosal lining of the urogenital tract; however, it is also capable of adhering to the muc... | Biology and health sciences | Gram-negative bacteria | Plants |
61899 | https://en.wikipedia.org/wiki/Phloem | Phloem | Phloem (, ) is the living tissue in vascular plants that transports the soluble organic compounds made during photosynthesis and known as photosynthates, in particular the sugar sucrose, to the rest of the plant. This transport process is called translocation. In trees, the phloem is the innermost layer of the bark, he... | Biology and health sciences | Plant tissues | Biology |
61962 | https://en.wikipedia.org/wiki/Mikoyan-Gurevich%20MiG-21 | Mikoyan-Gurevich MiG-21 | The Mikoyan-Gurevich MiG-21 (; NATO reporting name: Fishbed) is a supersonic jet fighter and interceptor aircraft, designed by the Mikoyan-Gurevich Design Bureau in the Soviet Union. Its nicknames include: "Balalaika", because its planform resembles the stringed musical instrument of the same name; "Ołówek", Polish for... | Technology | Specific aircraft | null |
61967 | https://en.wikipedia.org/wiki/Detonator | Detonator | A detonator is a device used to make an explosive or explosive device explode. Detonators come in a variety of types, depending on how they are initiated (chemically, mechanically, or electrically) and details of their inner working, which often involve several stages. Types of detonators include non-electric and elec... | Technology | Explosive weapons | null |
61983 | https://en.wikipedia.org/wiki/Tannin | Tannin | Tannins (or tannoids) are a class of astringent, polyphenolic biomolecules that bind to and precipitate proteins and various other organic compounds including amino acids and alkaloids. The term tannin is widely applied to any large polyphenolic compound containing sufficient hydroxyls and other suitable groups (such a... | Physical sciences | Carbon–oxygen bond | null |
61990 | https://en.wikipedia.org/wiki/Trilobite | Trilobite | Trilobites (; meaning "three-lobed entities") are extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the Atdabanian stage of the Early Cambrian period () and they flourished ... | Biology and health sciences | Arthropoda, others | null |
62158 | https://en.wikipedia.org/wiki/Convolvulaceae | Convolvulaceae | Convolvulaceae (), commonly called the bindweeds or morning glories, is a family of about 60 genera and more than 1,650 species. These species are primarily herbaceous vines, but also include trees, shrubs and herbs. The tubers of several species are edible, the best known of which is the sweet potato.
Description
Co... | Biology and health sciences | Solanales | Plants |
62166 | https://en.wikipedia.org/wiki/Rotifer | Rotifer | The rotifers (, from Latin 'wheel' and 'bearing'), sometimes called wheel animals or wheel animalcules, make up a phylum (Rotifera ) of microscopic and near-microscopic pseudocoelomate animals.
They were first described by Rev. John Harris in 1696, and other forms were described by Antonie van Leeuwenhoek in 1703. M... | Biology and health sciences | Platyzoa | Animals |
62175 | https://en.wikipedia.org/wiki/Crinoid | Crinoid | Crinoids are marine invertebrates that make up the class Crinoidea. Crinoids that remain attached to the sea floor by a stalk in their adult form are commonly called sea lilies, while the unstalked forms, called feather stars or comatulids, are members of the largest crinoid order, Comatulida. Crinoids are echinoderms ... | Biology and health sciences | Echinoderms | Animals |
62187 | https://en.wikipedia.org/wiki/Bilateria | Bilateria | Bilateria () is a large clade or infrakingdom of animals called bilaterians (), characterised by bilateral symmetry (i.e. having a left and a right side that are mirror images of each other) during embryonic development. This means their body plans are laid around a longitudinal axis (rostral–caudal axis) with a front ... | Biology and health sciences | General classification | null |
62198 | https://en.wikipedia.org/wiki/Livermorium | Livermorium | Livermorium is a synthetic chemical element; it has symbol Lv and atomic number 116. It is an extremely radioactive element that has only been created in a laboratory setting and has not been observed in nature. The element is named after the Lawrence Livermore National Laboratory in the United States, which collaborat... | Physical sciences | Group 16 | Chemistry |
62200 | https://en.wikipedia.org/wiki/Oganesson | Oganesson | Oganesson is a synthetic chemical element; it has symbol Og and atomic number 118. It was first synthesized in 2002 at the Joint Institute for Nuclear Research (JINR) in Dubna, near Moscow, Russia, by a joint team of Russian and American scientists. In December 2015, it was recognized as one of four new elements by the... | Physical sciences | Group 18 | Chemistry |
62247 | https://en.wikipedia.org/wiki/Backus%E2%80%93Naur%20form | Backus–Naur form | In computer science, BackusNaur form (BNF; ; Backus normal form) is a notation used to describe the syntax of programming languages or other formal languages. It was developed by John Backus and Peter Naur. BNF can be described as a metasyntax notation for context-free grammars. Backus–Naur form is applied wherever exa... | Technology | Programming languages | null |
62251 | https://en.wikipedia.org/wiki/Ctenophora | Ctenophora | Ctenophora ( ; : ctenophore ; )
comprise a phylum of marine invertebrates, commonly known as comb jellies, that inhabit sea waters worldwide. They are notable for the groups of cilia they use for swimming (commonly referred to as "combs"), and they are the largest animals to swim with the help of cilia.
Depending on ... | Biology and health sciences | Other | Animals |
62263 | https://en.wikipedia.org/wiki/Macaw | Macaw | Macaws are a group of New World parrots that are long-tailed and often colorful, in the tribe Arini. They are popular in aviculture or as companion parrots, although there are conservation concerns about several species in the wild.
Biology
Of the many different Psittacidae (true parrots) genera, six are classified a... | Biology and health sciences | Psittaciformes | Animals |
62289 | https://en.wikipedia.org/wiki/Monosodium%20glutamate | Monosodium glutamate | Monosodium glutamate (MSG), also known as sodium glutamate, is a sodium salt of glutamic acid. MSG is found naturally in some foods including tomatoes and cheese in this glutamic acid form. MSG is used in cooking as a flavor enhancer with a savory taste that intensifies the umami flavor of food, as naturally occurri... | Physical sciences | Glutamates | Chemistry |
62290 | https://en.wikipedia.org/wiki/Dinoflagellate | Dinoflagellate | The dinoflagellates () are a monophyletic group of single-celled eukaryotes constituting the phylum Dinoflagellata and are usually considered protists. Dinoflagellates are mostly marine plankton, but they are also common in freshwater habitats. Their populations vary with sea surface temperature, salinity, and depth. M... | Biology and health sciences | Other organisms | null |
62297 | https://en.wikipedia.org/wiki/Alveolate | Alveolate | The alveolates (meaning "pitted like a honeycomb") are a group of protists, considered a major clade and superphylum within Eukarya. They are currently grouped with the stramenopiles and Rhizaria among the protists with tubulocristate mitochondria into the SAR supergroup.
Characteristics
The most notable shared charac... | Biology and health sciences | Other organisms | null |
62299 | https://en.wikipedia.org/wiki/Cryptomonad | Cryptomonad | The cryptomonads (or cryptophytes) are a group of algae, most of which have plastids. They are traditionally considered a division of algae among phycologists, under the name of Cryptophyta. They are common in freshwater, and also occur in marine and brackish habitats. Each cell is around 10–50 μm in size and flattened... | Biology and health sciences | Other organisms | null |
62329 | https://en.wikipedia.org/wiki/Meta-analysis | Meta-analysis | Meta-analysis is a method of synthesis of quantitative data from multiple independent studies addressing a common research question. An important part of this method involves computing a combined effect size across all of the studies. As such, this statistical approach involves extracting effect sizes and variance meas... | Mathematics | Statistics and probability | null |
4261505 | https://en.wikipedia.org/wiki/Houndshark | Houndshark | The Triakidae or houndsharks are a family of ground sharks, consisting of about 40 species in nine genera. In some classifications, the family is split into two subfamilies, with the genera Mustelus, Scylliogaleus and Triakis in the subfamily Triakinae, and the remainders in the subfamily Galeorhininae.
Houndsharks ar... | Biology and health sciences | Sharks | Animals |
13632049 | https://en.wikipedia.org/wiki/Gamma-ray%20burst%20emission%20mechanisms | Gamma-ray burst emission mechanisms | Gamma-ray burst emission mechanisms are theories that explain how the energy from a gamma-ray burst progenitor (regardless of the actual nature of the progenitor) is turned into radiation. These mechanisms are a major topic of research as of 2007. Neither the light curves nor the early-time spectra of GRBs show resembl... | Physical sciences | Stellar astronomy | Astronomy |
13636218 | https://en.wikipedia.org/wiki/Alaska%20pollock | Alaska pollock | The Alaska pollock or walleye pollock (Gadus chalcogrammus) is a marine fish species of the cod genus Gadus and family Gadidae.
It is a semi-pelagic schooling fish widely distributed in the North Pacific, with largest concentrations found in the eastern Bering Sea.
Name and differentiation
Alaska pollock was in 1956 ... | Biology and health sciences | Acanthomorpha | null |
13640867 | https://en.wikipedia.org/wiki/Gamma-ray%20burst%20progenitors | Gamma-ray burst progenitors | Gamma-ray burst progenitors are the types of celestial objects that can emit gamma-ray bursts (GRBs). GRBs show an extraordinary degree of diversity. They can last anywhere from a fraction of a second to many minutes. Bursts could have a single profile or oscillate wildly up and down in intensity, and their spectra ar... | Physical sciences | Stellar astronomy | Astronomy |
3126375 | https://en.wikipedia.org/wiki/Axiidea | Axiidea | Axiidea is an infraorder of decapod crustaceans. They are colloquially known as mud shrimp, ghost shrimp, or burrowing shrimp; however, these decapods are only distantly related to true shrimp. Axiidea and Gebiidea are divergent infraorders of the former infraorder Thalassinidea. These infraorders have converged ecolog... | Biology and health sciences | Decapoda | Animals |
3128803 | https://en.wikipedia.org/wiki/Drying | Drying | Drying is a mass transfer process consisting of the removal of water or another solvent by evaporation from a solid, semi-solid or liquid. This process is often used as a final production step before selling or packaging products. To be considered "dried", the final product must be solid, in the form of a continuous sh... | Physical sciences | Phase separations | Chemistry |
3130999 | https://en.wikipedia.org/wiki/Japanese%20rhinoceros%20beetle | Japanese rhinoceros beetle | The Japanese rhinoceros beetle (Allomyrina dichotoma), also known as the Japanese rhino beetle, the Japanese horned beetle, or by its Japanese name ( or ), is a species of rhinoceros beetle. They are commonly found in continental Asia in countries such as China, the Korean peninsula, Japan, and Taiwan. In these areas,... | Biology and health sciences | Beetles (Coleoptera) | Animals |
11084869 | https://en.wikipedia.org/wiki/Gravitational-wave%20observatory | Gravitational-wave observatory | A gravitational-wave detector (used in a gravitational-wave observatory) is any device designed to measure tiny distortions of spacetime called gravitational waves. Since the 1960s, various kinds of gravitational-wave detectors have been built and constantly improved. The present-day generation of laser interferometers... | Technology | Telescope | null |
11084989 | https://en.wikipedia.org/wiki/Gravitational-wave%20astronomy | Gravitational-wave astronomy | Gravitational-wave astronomy is a subfield of astronomy concerned with the detection and study of gravitational waves emitted by astrophysical sources.
Gravitational waves are minute distortions or ripples in spacetime caused by the acceleration of massive objects. They are produced by cataclysmic events such as the m... | Physical sciences | Basics | Astronomy |
9615240 | https://en.wikipedia.org/wiki/Nitazoxanide | Nitazoxanide | Nitazoxanide, sold under the brand name Alinia among others, is a broad-spectrum antiparasitic and broad-spectrum antiviral medication that is used in medicine for the treatment of various helminthic, protozoal, and viral infections. It is indicated for the treatment of infection by Cryptosporidium parvum and Giardia ... | Biology and health sciences | Antiparasitic | Health |
12935 | https://en.wikipedia.org/wiki/Gram%20stain | Gram stain | Gram stain (Gram staining or Gram's method), is a method of staining used to classify bacterial species into two large groups: gram-positive bacteria and gram-negative bacteria. It may also be used to diagnose a fungal infection. The name comes from the Danish bacteriologist Hans Christian Gram, who developed the techn... | Biology and health sciences | Basics_3 | Biology |
12936 | https://en.wikipedia.org/wiki/Gram-positive%20bacteria | Gram-positive bacteria | In bacteriology, gram-positive bacteria are bacteria that give a positive result in the Gram stain test, which is traditionally used to quickly classify bacteria into two broad categories according to their type of cell wall.
The Gram stain is used by microbiologists to place bacteria into two main categories, Gram-po... | Biology and health sciences | Gram-positive bacteria | Plants |
12937 | https://en.wikipedia.org/wiki/Gram-negative%20bacteria | Gram-negative bacteria | Gram-negative bacteria are bacteria that, unlike gram-positive bacteria, do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. Their defining characteristic is that their cell envelope consists of a thin peptidoglycan cell wall sandwiched between an inner (cytoplasmic) me... | Biology and health sciences | Gram-negative bacteria | Plants |
12938 | https://en.wikipedia.org/wiki/Greyhound | Greyhound | The English Greyhound, or simply the Greyhound, is a breed of dog, a sighthound which has been bred for coursing, greyhound racing and hunting. Since the rise in large-scale adoption of retired racing Greyhounds, the breed has seen a resurgence in popularity as a family pet.
Greyhounds are defined as a tall, muscular,... | Biology and health sciences | Dogs | Animals |
12950 | https://en.wikipedia.org/wiki/Glucose | Glucose | Glucose is a sugar with the molecular formula . It is overall the most abundant monosaccharide, a subcategory of carbohydrates. It is mainly made by plants and most algae during photosynthesis from water and carbon dioxide, using energy from sunlight. It is used by plants to make cellulose, the most abundant carbohydra... | Biology and health sciences | Biochemistry and molecular biology | null |
12967 | https://en.wikipedia.org/wiki/Geologic%20time%20scale | Geologic time scale | The geologic time scale or geological time scale (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochronology (a scientific branch of geology that aims to determine the age of rocks). I... | Physical sciences | Geological history | null |
12976 | https://en.wikipedia.org/wiki/Gastroenterology | Gastroenterology | Gastroenterology (from the Greek gastḗr- "belly", -énteron "intestine", and -logía "study of") is the branch of medicine focused on the digestive system and its disorders. The digestive system consists of the gastrointestinal tract, sometimes referred to as the GI tract, which includes the esophagus, stomach, small int... | Biology and health sciences | Fields of medicine | null |
12984 | https://en.wikipedia.org/wiki/Geiger%20counter | Geiger counter | A Geiger counter (, ; also known as a Geiger–Müller counter or G-M counter) is an electronic instrument used for detecting and measuring ionizing radiation. It is widely used in applications such as radiation dosimetry, radiological protection, experimental physics and the nuclear industry.
"Geiger counter" is often u... | Technology | Measuring instruments | null |
13009 | https://en.wikipedia.org/wiki/Galileo%20%28satellite%20navigation%29 | Galileo (satellite navigation) | Galileo is a global navigation satellite system (GNSS) created by the European Union through the European Space Agency (ESA) and operated by the European Union Agency for the Space Programme (EUSPA). It is headquartered in Prague, Czechia, with two ground operations centres in Oberpfaffenhofen, Germany (mostly responsi... | Technology | Navigation | null |
13026 | https://en.wikipedia.org/wiki/Gray%20whale | Gray whale | The gray whale (Eschrichtius robustus), also known as the grey whale, is a baleen whale that migrates between feeding and breeding grounds yearly. It reaches a length of , a weight of up to and lives between 55 and 70 years, although one female was estimated to be 75–80 years of age. The common name of the whale come... | Biology and health sciences | Baleen whales | Animals |
13034 | https://en.wikipedia.org/wiki/Geyser | Geyser | A geyser (, ) is a spring with an intermittent discharge of water ejected turbulently and accompanied by steam. The formation of geysers is fairly rare, and is caused by particular hydrogeological conditions that exist only in a few places on Earth.
Generally, geyser field sites are located near active volcanic areas,... | Physical sciences | Volcanic landforms | null |
13035 | https://en.wikipedia.org/wiki/Gaussian%20elimination | Gaussian elimination | In mathematics, Gaussian elimination, also known as row reduction, is an algorithm for solving systems of linear equations. It consists of a sequence of row-wise operations performed on the corresponding matrix of coefficients. This method can also be used to compute the rank of a matrix, the determinant of a square ma... | Mathematics | Algebra | null |
13040 | https://en.wikipedia.org/wiki/Gypsum | Gypsum | Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula . It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, drywall and blackboard or sidewalk chalk. Gypsum also crystallizes as translucent crystals of selenite. It forms as an ... | Physical sciences | Mineralogy | null |
13046 | https://en.wikipedia.org/wiki/Geometric%20mean | Geometric mean | In mathematics, the geometric mean is a mean or average which indicates a central tendency of a finite collection of positive real numbers by using the product of their values (as opposed to the arithmetic mean which uses their sum). The geometric mean of numbers is the th root of their product, i.e., for a collectio... | Mathematics | Statistics | null |
13057 | https://en.wikipedia.org/wiki/Gatling%20gun | Gatling gun | The Gatling gun is a rapid-firing multiple-barrel firearm invented in 1861 by Richard Jordan Gatling. It is an early machine gun and a forerunner of the modern electric motor-driven rotary cannon.
The Gatling gun's operation centered on a cyclic multi-barrel design which facilitated cooling and synchronized the firing... | Technology | Specific firearms | null |
13077 | https://en.wikipedia.org/wiki/Galileo%20project | Galileo project | Galileo was an American robotic space program that studied the planet Jupiter and its moons, as well as several other Solar System bodies. Named after the Italian astronomer Galileo Galilei, the Galileo spacecraft consisted of an orbiter and an atmospheric entry probe. It was delivered into Earth orbit on October 18, 1... | Technology | Unmanned spacecraft | null |
13088 | https://en.wikipedia.org/wiki/Granite | Granite | Granite ( ) is a coarse-grained (phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground. It is common in the continental crust of Earth, where it is found in ig... | Physical sciences | Petrology | null |
13115 | https://en.wikipedia.org/wiki/Gametophyte | Gametophyte | A gametophyte () is one of the two alternating multicellular phases in the life cycles of plants and algae. It is a haploid multicellular organism that develops from a haploid spore that has one set of chromosomes. The gametophyte is the sexual phase in the life cycle of plants and algae. It develops sex organs that pr... | Biology and health sciences | Plant reproduction | null |
13134 | https://en.wikipedia.org/wiki/Gecko | Gecko | Geckos are small, mostly carnivorous lizards that have a wide distribution, found on every continent except Antarctica. Belonging to the infraorder Gekkota, geckos are found in warm climates throughout the world. They range from .
Geckos are unique among lizards for their vocalisations, which differ from species to sp... | Biology and health sciences | Reptiles | null |
13146 | https://en.wikipedia.org/wiki/Gabbro | Gabbro | Gabbro ( ) is a phaneritic (coarse-grained and magnesium- and iron-rich), mafic intrusive igneous rock formed from the slow cooling magma into a holocrystalline mass deep beneath the Earth's surface. Slow-cooling, coarse-grained gabbro is chemically equivalent to rapid-cooling, fine-grained basalt. Much of the Earth's ... | Physical sciences | Igneous rocks | Earth science |
13152 | https://en.wikipedia.org/wiki/Gluten | Gluten | Gluten is a structural protein naturally found in certain cereal grains. The term gluten usually refers to the elastic network of a wheat grain's proteins, gliadin and glutenin primarily, that forms readily with the addition of water and often kneading in the case of bread dough. The types of grains that contain gluten... | Biology and health sciences | Proteins | Biology |
13160 | https://en.wikipedia.org/wiki/Gelatin | Gelatin | Gelatin or gelatine () is a translucent, colorless, flavorless food ingredient, commonly derived from collagen taken from animal body parts. It is brittle when dry and rubbery when moist. It may also be referred to as hydrolyzed collagen, collagen hydrolysate, gelatine hydrolysate, hydrolyzed gelatine, and collagen pep... | Biology and health sciences | Proteins | Biology |
13169 | https://en.wikipedia.org/wiki/Gneiss | Gneiss | Gneiss ( ) is a common and widely distributed type of metamorphic rock. It is formed by high-temperature and high-pressure metamorphic processes acting on formations composed of igneous or sedimentary rocks. This rock is formed under pressures ranging from 2 to 15 kbar, sometimes even more, and temperatures over 300 °C... | Physical sciences | Petrology | null |
13191 | https://en.wikipedia.org/wiki/HTML | HTML | Hypertext Markup Language (HTML) is the standard markup language for documents designed to be displayed in a web browser. It defines the content and structure of web content. It is often assisted by technologies such as Cascading Style Sheets (CSS) and scripting languages such as JavaScript, a programming language.
We... | Technology | Programming | null |
13255 | https://en.wikipedia.org/wiki/Hydrogen | Hydrogen | Hydrogen is a chemical element; it has symbol H and atomic number 1. It is the lightest element and, at standard conditions, is a gas of diatomic molecules with the formula , sometimes called dihydrogen, hydrogen gas, molecular hydrogen, or simply hydrogen. It is colorless, odorless, non-toxic, and highly combustible. ... | Physical sciences | Chemistry | null |
13256 | https://en.wikipedia.org/wiki/Helium | Helium | Helium (from ) is a chemical element; it has symbol He and atomic number 2. It is a colorless, odorless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table. Its boiling point is the lowest among all the elements, and it does not have a melting point at standard pressures. It is t... | Physical sciences | Chemical elements_2 | null |
13257 | https://en.wikipedia.org/wiki/Hydrocarbon | Hydrocarbon | In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon. Hydrocarbons are examples of group 14 hydrides. Hydrocarbons are generally colourless and hydrophobic; their odor is usually faint, and may be similar to that of gasoline or lighter fluid. They occur in a diverse rang... | Physical sciences | Hydrocarbons | null |
13258 | https://en.wikipedia.org/wiki/Halogen | Halogen | |-
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The halogens () are a group in the periodic table consisting of six chemically related elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and the radioactive elemen... | Physical sciences | Chemical element groups | null |
13259 | https://en.wikipedia.org/wiki/Home%20page | Home page | A home page (or homepage) is the main web page of a website. Usually, the home page is located at the root of the website's domain or subdomain. For example, if the domain is example.com, the home page is likely located at the URL www.example.com/.
The term may also refer to the start page shown in a web browser when ... | Technology | Internet | null |
13263 | https://en.wikipedia.org/wiki/Hexadecimal | Hexadecimal | Hexadecimal (also known as base-16 or simply hex) is a positional numeral system that represents numbers using a radix (base) of sixteen. Unlike the decimal system representing numbers using ten symbols, hexadecimal uses sixteen distinct symbols, most often the symbols "0"–"9" to represent values 0 to 9 and "A"–"F" to ... | Mathematics | Basics | null |
13266 | https://en.wikipedia.org/wiki/Histogram | Histogram | A histogram is a visual representation of the distribution of quantitative data. To construct a histogram, the first step is to "bin" (or "bucket") the range of values— divide the entire range of values into a series of intervals—and then count how many values fall into each interval. The bins are usually specified as... | Mathematics | Statistics | null |
13292 | https://en.wikipedia.org/wiki/Hypoxia%20%28medicine%29 | Hypoxia (medicine) | Hypoxia is a condition in which the body or a region of the body is deprived of adequate oxygen supply at the tissue level. Hypoxia may be classified as either generalized, affecting the whole body, or local, affecting a region of the body. Although hypoxia is often a pathological condition, variations in arterial oxyg... | Biology and health sciences | Injury | null |
13311 | https://en.wikipedia.org/wiki/Hormone | Hormone | A hormone (from the Greek participle , "setting in motion") is a class of signaling molecules in multicellular organisms that are sent to distant organs or tissues by complex biological processes to regulate physiology and behavior. Hormones are required for the correct development of animals, plants and fungi. Due to ... | Biology and health sciences | Chemistry | null |
13435 | https://en.wikipedia.org/wiki/Hydrology | Hydrology | Hydrology () is the scientific study of the movement, distribution, and management of water on Earth and other planets, including the water cycle, water resources, and drainage basin sustainability. A practitioner of hydrology is called a hydrologist. Hydrologists are scientists studying earth or environmental science,... | Physical sciences | Hydrology | null |
13443 | https://en.wikipedia.org/wiki/HTTP | HTTP | HTTP (Hypertext Transfer Protocol) is an application layer protocol in the Internet protocol suite model for distributed, collaborative, hypermedia information systems. HTTP is the foundation of data communication for the World Wide Web, where hypertext documents include hyperlinks to other resources that the user can ... | Technology | Internet | null |
13457 | https://en.wikipedia.org/wiki/Heredity | Heredity | Heredity, also called inheritance or biological inheritance, is the passing on of traits from parents to their offspring; either through asexual reproduction or sexual reproduction, the offspring cells or organisms acquire the genetic information of their parents. Through heredity, variations between individuals can ac... | Biology and health sciences | Biology | null |
13465 | https://en.wikipedia.org/wiki/Holmium | Holmium | Holmium is a chemical element; it has symbol Ho and atomic number 67. It is a rare-earth element and the eleventh member of the lanthanide series. It is a relatively soft, silvery, fairly corrosion-resistant and malleable metal. Like many other lanthanides, holmium is too reactive to be found in native form, as pure ho... | Physical sciences | Chemical elements_2 | null |
13466 | https://en.wikipedia.org/wiki/Hafnium | Hafnium | Hafnium is a chemical element; it has symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. Its existence was predicted by Dmitri Mendeleev in 1869, though it was not identified until 1922, by Dirk Coster a... | Physical sciences | Chemical elements_2 | null |
13471 | https://en.wikipedia.org/wiki/Holocene | Holocene | The Holocene () is the current geological epoch, beginning approximately 11,700 years ago. It follows the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene together form the Quaternary period. The Holocene is an interglacial period within the ongoing glac... | Physical sciences | Geological periods | null |
13475 | https://en.wikipedia.org/wiki/Harbor | Harbor | A harbor (American English), or harbour (Australian English, British English, Canadian English, Irish English, New Zealand English; see spelling differences), is a sheltered body of water where ships, boats, and barges can be moored. The term harbor is often used interchangeably with port, which is a man-made facility ... | Technology | Coastal infrastructure | null |
13480 | https://en.wikipedia.org/wiki/Horseshoe | Horseshoe | A horseshoe is a product designed to protect a horse hoof from wear. Shoes are attached on the palmar surface (ground side) of the hooves, usually nailed through the insensitive hoof wall that is anatomically akin to the human toenail, although much larger and thicker. However, there are also cases where shoes are glue... | Technology | Animal husbandry | null |
13483 | https://en.wikipedia.org/wiki/Hemoglobin | Hemoglobin | Hemoglobin (haemoglobin, Hb or Hgb) is a protein containing iron that facilitates the transportation of oxygen in red blood cells. Almost all vertebrates contain hemoglobin, with the sole exception of the fish family Channichthyidae. Hemoglobin in the blood carries oxygen from the respiratory organs (lungs or gills) to... | Biology and health sciences | Biochemistry and molecular biology | null |
13492 | https://en.wikipedia.org/wiki/Hyperthyroidism | Hyperthyroidism | Hyperthyroidism is the condition that occurs due to excessive production of thyroid hormones by the thyroid gland. Thyrotoxicosis is the condition that occurs due to excessive thyroid hormone of any cause and therefore includes hyperthyroidism. Some, however, use the terms interchangeably. Signs and symptoms vary betwe... | Biology and health sciences | Specific diseases | Health |
13564 | https://en.wikipedia.org/wiki/Homomorphism | Homomorphism | In algebra, a homomorphism is a structure-preserving map between two algebraic structures of the same type (such as two groups, two rings, or two vector spaces). The word homomorphism comes from the Ancient Greek language: () meaning "same" and () meaning "form" or "shape". However, the word was apparently introduced... | Mathematics | Abstract algebra | null |
13570 | https://en.wikipedia.org/wiki/Histology | Histology | Histology,
also known as microscopic anatomy or microanatomy, is the branch of biology that studies the microscopic anatomy of biological tissues. Histology is the microscopic counterpart to gross anatomy, which looks at larger structures visible without a microscope. Although one may divide microscopic anatomy into or... | Biology and health sciences | Basic anatomy | Biology |
13586 | https://en.wikipedia.org/wiki/HTTPS | HTTPS | Hypertext Transfer Protocol Secure (HTTPS) is an extension of the Hypertext Transfer Protocol (HTTP). It uses encryption for secure communication over a computer network, and is widely used on the Internet. In HTTPS, the communication protocol is encrypted using Transport Layer Security (TLS) or, formerly, Secure Socke... | Technology | Internet | null |
13595 | https://en.wikipedia.org/wiki/Heathrow%20Airport | Heathrow Airport | London Heathrow Airport colloquially known as Heathrow () and named London Airport until 1966, is the primary and largest international airport serving London, the capital and most populous city of England and the United Kingdom. It is the largest of the six international airports in the London airport system (the oth... | Technology | Europe | null |
13606 | https://en.wikipedia.org/wiki/Half-life | Half-life | Half-life (symbol ) is the time required for a quantity (of substance) to reduce to half of its initial value. The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo radioactive decay or how long stable atoms survive. The term is also used more generally to characterize any type of ... | Physical sciences | Nuclear physics | Physics |
13607 | https://en.wikipedia.org/wiki/Humus | Humus | In classical soil science, humus is the dark organic matter in soil that is formed by the decomposition of plant and animal matter. It is a kind of soil organic matter. It is rich in nutrients and retains moisture in the soil. Humus is the Latin word for "earth" or "ground".
In agriculture, "humus" sometimes also is u... | Physical sciences | Soil science | Earth science |
13609 | https://en.wikipedia.org/wiki/Hydrogen%20bond | Hydrogen bond | In chemistry, a hydrogen bond (or H-bond) is primarily an electrostatic force of attraction between a hydrogen (H) atom which is covalently bonded to a more electronegative "donor" atom or group (Dn), and another electronegative atom bearing a lone pair of electrons—the hydrogen bond acceptor (Ac). Such an interacting ... | Physical sciences | Chemical bonds | null |
13645 | https://en.wikipedia.org/wiki/Horse | Horse | The horse (Equus ferus caballus) is a domesticated, one-toed, hoofed mammal. It belongs to the taxonomic family Equidae and is one of two extant subspecies of Equus ferus. The horse has evolved over the past 45 to 55 million years from a small multi-toed creature, Eohippus, into the large, single-toed animal of today. ... | Biology and health sciences | Biology | null |
13654 | https://en.wikipedia.org/wiki/Heat%20engine | Heat engine | A heat engine is a system that converts heat to usable energy, particularly mechanical energy, which can then be used to do mechanical work. While originally conceived in the context of mechanical energy, the concept of the heat engine has been applied to various other kinds of energy, particularly electrical, since at... | Physical sciences | Thermodynamics | Physics |
13660 | https://en.wikipedia.org/wiki/Homeomorphism | Homeomorphism | In mathematics and more specifically in topology, a homeomorphism (from Greek roots meaning "similar shape", named by Henri Poincaré), also called topological isomorphism, or bicontinuous function, is a bijective and continuous function between topological spaces that has a continuous inverse function. Homeomorphisms a... | Mathematics | Topology | null |
13711 | https://en.wikipedia.org/wiki/Hydroxide | Hydroxide | Hydroxide is a diatomic anion with chemical formula OH−. It consists of an oxygen and hydrogen atom held together by a single covalent bond, and carries a negative electric charge. It is an important but usually minor constituent of water. It functions as a base, a ligand, a nucleophile, and a catalyst. The hydroxide i... | Physical sciences | Hydroxy anion | Chemistry |
13733 | https://en.wikipedia.org/wiki/Hilbert%27s%20basis%20theorem | Hilbert's basis theorem | In mathematics Hilbert's basis theorem asserts that every ideal of a polynomial ring over a field has a finite generating set (a finite basis in Hilbert's terminology).
In modern algebra, rings whose ideals have this property are called Noetherian rings. Every field, and the ring of integers are Noetherian rings. So, ... | Mathematics | Abstract algebra | null |
13761 | https://en.wikipedia.org/wiki/Hydrofoil | Hydrofoil | A hydrofoil is a lifting surface, or foil, that operates in water. They are similar in appearance and purpose to aerofoils used by aeroplanes. Boats that use hydrofoil technology are also simply termed hydrofoils. As a hydrofoil craft gains speed, the hydrofoils lift the boat's hull out of the water, decreasing drag an... | Technology | Naval transport | null |
13764 | https://en.wikipedia.org/wiki/Hassium | Hassium | Hassium is a synthetic chemical element; it has symbol Hs and atomic number 108. It is highly radioactive: its most stable known isotopes have half-lives of about ten seconds. One of its isotopes, Hs, has magic numbers of protons and neutrons for deformed nuclei, giving it greater stability against spontaneous fission.... | Physical sciences | Group 8 | Chemistry |
13767 | https://en.wikipedia.org/wiki/Hydra%20%28genus%29 | Hydra (genus) | Hydra ( ) is a genus of small freshwater hydrozoans of the phylum Cnidaria. They are native to the temperate and tropical regions. The genus was named by Linnaeus in 1758 after the Hydra, which was the many-headed beast of myth defeated by Heracles, as when the animal has a part severed, it will regenerate much like th... | Biology and health sciences | Cnidarians | Animals |
13768 | https://en.wikipedia.org/wiki/Hydrus | Hydrus | Hydrus is a small constellation in the deep southern sky. It was one of twelve constellations created by Petrus Plancius from the observations of Pieter Dirkszoon Keyser and Frederick de Houtman and it first appeared on a 35-cm (14 in) diameter celestial globe published in late 1597 (or early 1598) in Amsterdam by Pla... | Physical sciences | Other | Astronomy |
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