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36104 | https://en.wikipedia.org/wiki/Nanosecond | Nanosecond | A nanosecond (ns) is a unit of time in the International System of Units (SI) equal to one billionth of a second, that is, of a second, or seconds.
The term combines the SI prefix nano- indicating a 1 billionth submultiple of an SI unit (e.g. nanogram, nanometre, etc.) and second, the primary unit of time in the SI.... | Physical sciences | Time | Basics and measurement |
36153 | https://en.wikipedia.org/wiki/Millisecond | Millisecond | A millisecond (from milli- and second; symbol: ms) is a unit of time in the International System of Units equal to one thousandth (0.001 or 10−3 or 1/1000) of a second or 1000 microseconds.
A millisecond is to one second, as one second is to approximately 16.67 minutes.
A unit of 10 milliseconds may be called a centi... | Physical sciences | Time | Basics and measurement |
36156 | https://en.wikipedia.org/wiki/Microsecond | Microsecond | A microsecond is a unit of time in the International System of Units (SI) equal to one millionth (0.000001 or 10−6 or ) of a second. Its symbol is μs, sometimes simplified to us when Unicode is not available.
A microsecond is to one second, as one second is to approximately 11.57 days.
A microsecond is equal to 1000 ... | Physical sciences | Time | Basics and measurement |
439282 | https://en.wikipedia.org/wiki/Gully | Gully | A gully is a landform created by running water, mass movement, or commonly a combination of both eroding sharply into soil or other relatively erodible material, typically on a hillside or in river floodplains or terraces.
Gullies resemble large ditches or small valleys, but are metres to tens of metres in depth and ... | Physical sciences | Fluvial landforms | Earth science |
439344 | https://en.wikipedia.org/wiki/Right%20whale%20dolphin | Right whale dolphin | Right whale dolphins are cetaceans belonging to the genus Lissodelphis. It contains the northern right whale dolphin (Lissodelphis borealis) and the southern right whale dolphin (Lissodelphis peronii). These cetaceans are predominantly black, white beneath, and some of the few without a dorsal fin or ridge. They are s... | Biology and health sciences | Toothed whale | Animals |
439497 | https://en.wikipedia.org/wiki/Classical%20limit | Classical limit | The classical limit or correspondence limit is the ability of a physical theory to approximate or "recover" classical mechanics when considered over special values of its parameters. The classical limit is used with physical theories that predict non-classical behavior.
Quantum theory
A heuristic postulate called the ... | Physical sciences | Physics basics: General | Physics |
439973 | https://en.wikipedia.org/wiki/Herbal%20medicine | Herbal medicine | Herbal medicine (also called herbalism, phytomedicine or phytotherapy) is the study of pharmacognosy and the use of medicinal plants, which are a basis of traditional medicine. With worldwide research into pharmacology, some herbal medicines have been translated into modern remedies, such as the anti-malarial group of ... | Biology and health sciences | Alternative and traditional medicine | null |
440367 | https://en.wikipedia.org/wiki/Sea%20spider | Sea spider | Sea spiders are marine arthropods of the class Pycnogonida, hence they are also called pycnogonids (; named after Pycnogonum, the type genus; with the suffix ). The class include the only now-living order Pantopoda ( ‘all feet’), alongside a few fossil species which could trace back to the early or mid Paleozoic. They ... | Biology and health sciences | Chelicerata (except arachnids) | Animals |
440479 | https://en.wikipedia.org/wiki/Influenza%20A%20virus | Influenza A virus | Influenza A virus (IAV) is the only species of the genus Alphainfluenzavirus of the virus family Orthomyxoviridae. It is a pathogen with strains that infect birds and some mammals, as well as causing seasonal flu in humans. Mammals in which different strains of IAV circulate with sustained transmission are bats, pigs, ... | Biology and health sciences | Specific viruses | Health |
440649 | https://en.wikipedia.org/wiki/Oligochaeta | Oligochaeta | Oligochaeta () is a subclass of soft-bodied animals in the phylum Annelida, which is made up of many types of aquatic and terrestrial worms, including all of the various earthworms. Specifically, oligochaetes comprise the terrestrial megadrile earthworms (some of which are semiaquatic or fully aquatic), and freshwater... | Biology and health sciences | Lophotrochozoa | Animals |
440789 | https://en.wikipedia.org/wiki/Gyrator | Gyrator | A gyrator is a passive, linear, lossless, two-port electrical network element proposed in 1948 by Bernard D. H. Tellegen as a hypothetical fifth linear element after the resistor, capacitor, inductor and ideal transformer. Unlike the four conventional elements, the gyrator is non-reciprocal. Gyrators permit network rea... | Technology | Functional circuits | null |
440872 | https://en.wikipedia.org/wiki/Common%20snapping%20turtle | Common snapping turtle | The common snapping turtle (Chelydra serpentina) is a species of large freshwater turtle in the family Chelydridae. Its natural range extends from southeastern Canada, southwest to the edge of the Rocky Mountains, as far east as Nova Scotia and Florida. The present-day Chelydra serpentina population in the Middle Rio G... | Biology and health sciences | Reptiles | null |
441046 | https://en.wikipedia.org/wiki/Rove%20beetle | Rove beetle | The rove beetles are a family (Staphylinidae) of beetles, primarily distinguished by their short elytra (wing covers) that typically leave more than half of their abdominal segments exposed. With over 66,000 species in thousands of genera, the group is one of the largest families in the beetle order, and one of the lar... | Biology and health sciences | Beetles (Coleoptera) | Animals |
441135 | https://en.wikipedia.org/wiki/Pauropoda | Pauropoda | Pauropoda is a class of small, pale, millipede-like arthropods in the subphylum Myriapoda. More than 900 species in twelve families are found worldwide, living in soil and leaf mold. Pauropods look like centipedes or millipedes and may be a sister group of the latter, but a close relationship with Symphyla has also bee... | Biology and health sciences | Myriapoda | Animals |
441143 | https://en.wikipedia.org/wiki/Symphyla | Symphyla | Symphylans, also known as garden centipedes or pseudocentipedes, are soil-dwelling arthropods of the class Symphyla in the subphylum Myriapoda. Symphylans resemble centipedes, but are very small, non-venomous, and may or may not form a clade with centipedes. More than 200 species are known worldwide.
Symphyla are prim... | Biology and health sciences | Myriapoda | Animals |
442137 | https://en.wikipedia.org/wiki/Loss%20function | Loss function | In mathematical optimization and decision theory, a loss function or cost function (sometimes also called an error function) is a function that maps an event or values of one or more variables onto a real number intuitively representing some "cost" associated with the event. An optimization problem seeks to minimize a ... | Mathematics | Optimization | null |
18392290 | https://en.wikipedia.org/wiki/Hydrodynamic%20voltammetry | Hydrodynamic voltammetry | In analytical chemistry, hydrodynamic voltammetry is a form of voltammetry in which the analyte solution flows relative to a working electrode. In many voltammetry techniques, the solution is intentionally left still to allow diffusion-controlled mass transfer. When a solution is made to flow, through stirring or some... | Physical sciences | Electrical methods | Chemistry |
18399896 | https://en.wikipedia.org/wiki/Chalk%20line | Chalk line | A chalk line or chalk box is a tool for marking long, straight lines on relatively flat surfaces, much further than is practical by hand or with a straightedge. They may be used to lay out straight lines between two points, or vertical lines by using the weight of the line reel as a plumb line.
It is an important tool... | Technology | Hand tools | null |
2505466 | https://en.wikipedia.org/wiki/Exomoon | Exomoon | An exomoon or extrasolar moon is a natural satellite that orbits an exoplanet or other non-stellar extrasolar body.
Exomoons are difficult to detect and confirm using current techniques, and to date there have been no confirmed exomoon detections. However, observations from missions such as Kepler have observed a numb... | Physical sciences | Planetary science | Astronomy |
2506366 | https://en.wikipedia.org/wiki/Tanker%20%28ship%29 | Tanker (ship) | A tanker (or tank ship or tankship) is a ship designed to transport or store liquids or gases in bulk. Major types of tankship include the oil tanker (or petroleum tanker), the chemical tanker, cargo ships, and a gas carrier. Tankers also carry commodities such as vegetable oils, molasses and wine. In the United State... | Technology | Maritime transport | null |
2506590 | https://en.wikipedia.org/wiki/Flail%20%28tool%29 | Flail (tool) | A flail is an agricultural tool used for threshing, the process of separating grains from their husks.
It is usually made from two or more large sticks attached by a short chain; one stick is held and swung, causing the other (the swipple) to strike a pile of grain, loosening the husks. The precise dimensions and shap... | Technology | Agricultural tools | null |
2508874 | https://en.wikipedia.org/wiki/Longbow | Longbow | A longbow is a type of tall bow that makes a fairly long draw possible. Longbows for hunting and warfare have been made from many different woods in many cultures; in Europe they date from the Paleolithic era and, since the Bronze Age, were made mainly from yew, or from wych elm if yew was unavailable. The historical l... | Technology | Archery | null |
743997 | https://en.wikipedia.org/wiki/Cheek | Cheek | The cheeks () constitute the area of the face below the eyes and between the nose and the left or right ear. Buccal means relating to the cheek. In humans, the region is innervated by the buccal nerve. The area between the inside of the cheek and the teeth and gums is called the vestibule or buccal pouch or buccal cavi... | Biology and health sciences | External anatomy and regions of the body | Biology |
744143 | https://en.wikipedia.org/wiki/Bank%20vault | Bank vault | A bank vault is a secure room used by banks to store and protect valuables, cash, and important documents. Modern bank vaults are typically made of reinforced concrete and steel, with complex locking mechanisms and security systems. This article covers the design, construction, and security features of bank vaults.
Un... | Technology | Containers | null |
744639 | https://en.wikipedia.org/wiki/Thalweg | Thalweg | In geography, hydrography, and fluvial geomorphology, a thalweg or talweg () is the line or curve of lowest elevation within a valley or watercourse. Its vertical position in maps is the nadir (greatest depth, sounding) in the stream profile.
Under international law, a thalweg is instead taken to be the middle of the ... | Physical sciences | Hydrology | Earth science |
745387 | https://en.wikipedia.org/wiki/Malathion | Malathion | Malathion is an organophosphate insecticide which acts as an acetylcholinesterase inhibitor. In the USSR, it was known as carbophos, in New Zealand and Australia as maldison and in South Africa as mercaptothion.
Pesticide use
Malathion is a pesticide that is widely used in agriculture, residential landscaping, public ... | Technology | Pest and disease control | null |
745701 | https://en.wikipedia.org/wiki/Free-radical%20addition | Free-radical addition | In organic chemistry, free-radical addition is an addition reaction which involves free radicals. These reactions can happen due to the free radicals having an unpaired electron in their valence shell, making them highly reactive. Radical additions are known for a variety of unsaturated substrates, both olefinic or a... | Physical sciences | Organic reactions | Chemistry |
746462 | https://en.wikipedia.org/wiki/Tungsten%20carbide | Tungsten carbide | Tungsten carbide (chemical formula: WC) is a chemical compound (specifically, a carbide) containing equal parts of tungsten and carbon atoms. In its most basic form, tungsten carbide is a fine gray powder, but it can be pressed and formed into shapes through sintering for use in industrial machinery, engineering facili... | Physical sciences | Ceramic compounds | Chemistry |
746495 | https://en.wikipedia.org/wiki/Bioreactor | Bioreactor | A bioreactor is any manufactured device or system that supports a biologically active environment. In one case, a bioreactor is a vessel in which a chemical process is carried out which involves organisms or biochemically active substances derived from such organisms. This process can either be aerobic or anaerobic. Th... | Technology | Biotechnology | null |
746513 | https://en.wikipedia.org/wiki/Safflower | Safflower | Safflower (Carthamus tinctorius) is a highly branched, herbaceous, thistle-like annual plant in the family Asteraceae. It is one of the world's oldest crops, and today is commercially cultivated for vegetable oil extracted from the seeds. Plants are tall with globular flower heads having yellow, orange, or red flowers... | Biology and health sciences | Asterales | Plants |
747188 | https://en.wikipedia.org/wiki/Spinosaurus | Spinosaurus | Spinosaurus (; ) is a genus of spinosaurid dinosaur that lived in what now is North Africa during the Cenomanian stage of the Late Cretaceous period, about 100 to 94 million years ago. The genus was known first from Egyptian remains discovered in 1912 and described by German palaeontologist Ernst Stromer in 1915. The o... | Biology and health sciences | Theropods | Animals |
747239 | https://en.wikipedia.org/wiki/Body%20odor | Body odor | Body odor or body odour (BO) is present in all animals and its intensity can be influenced by many factors (behavioral patterns, survival strategies). Body odor has a strong genetic basis, but can also be strongly influenced by various factors, such as sex, diet, health, and medication. The body odor of human males pla... | Biology and health sciences | Hygiene and grooming: General | Health |
747331 | https://en.wikipedia.org/wiki/Limnognathia | Limnognathia | Limnognathia maerski is a microscopic acoelomate freshwater animal, discovered living in cold springs on Disko Island, Greenland, in 1994. Since then, it has also been found on the Crozet Islands of Antarctica as well as in the British Isles, suggesting a worldwide distribution, although there are likely different spec... | Biology and health sciences | Platyzoa | Animals |
747364 | https://en.wikipedia.org/wiki/Lophotrochozoa | Lophotrochozoa | Lophotrochozoa (, "crest/wheel animals") is a clade of protostome animals within the Spiralia. The taxon was established as a monophyletic group based on molecular evidence. The clade includes animals like annelids, molluscs, bryozoans, and brachiopods.
Groups
Lophotrochozoa was defined in 1995 as the "last common an... | Biology and health sciences | Lophotrochozoa | Animals |
747516 | https://en.wikipedia.org/wiki/Tan%20%28color%29 | Tan (color) | Tan is a pale tone of brown. The name is derived from tannum (oak bark) used in the tanning of leather.
The first recorded use of tan as a color name in English was in the year 1590.
Colors which are similar or may be considered synonymous to tan include: tawny, tenné, and fulvous.
Variations of tan
Sandy tan
Dis... | Physical sciences | Colors | Physics |
3444072 | https://en.wikipedia.org/wiki/Push%E2%80%93relabel%20maximum%20flow%20algorithm | Push–relabel maximum flow algorithm | In mathematical optimization, the push–relabel algorithm (alternatively, preflow–push algorithm) is an algorithm for computing maximum flows in a flow network. The name "push–relabel" comes from the two basic operations used in the algorithm. Throughout its execution, the algorithm maintains a "preflow" and gradually c... | Mathematics | Graph theory | null |
3444568 | https://en.wikipedia.org/wiki/Big%20Dipper | Big Dipper | The Big Dipper (US, Canada) or the Plough (UK, Ireland) is an asterism consisting of seven bright stars of the constellation Ursa Major; six of them are of second magnitude and one, Megrez (δ), of third magnitude. Four define a "bowl" or "body" and three define a "handle" or "head". It is recognized as a distinct group... | Physical sciences | Asterism | Astronomy |
3445437 | https://en.wikipedia.org/wiki/Zingiberene | Zingiberene | Zingiberene is a monocyclic sesquiterpene that is the predominant constituent of the oil of ginger (Zingiber officinale), from which it gets its name. It can contribute up to 30% of the essential oils in ginger rhizomes. This is the compound that gives ginger its distinct flavoring.
Biosynthesis
Zingiberene is formed... | Physical sciences | Terpenes and terpenoids | Chemistry |
1202646 | https://en.wikipedia.org/wiki/Tear%20gas | Tear gas | Tear gas, also known as a lachrymatory agent or lachrymator (), sometimes colloquially known as "mace" after the early commercial self-defense spray, is a chemical weapon that stimulates the nerves of the lacrimal gland in the eye to produce tears. In addition, it can cause severe eye and respiratory pain, skin irritat... | Technology | Less-lethal weapons | null |
1202733 | https://en.wikipedia.org/wiki/Sea%20lamprey | Sea lamprey | The sea lamprey (Petromyzon marinus) is a parasitic lamprey native to the Northern Hemisphere. It is sometimes referred to as the "vampire fish". In its original habitats, the sea lamprey coevolved with its hosts, and those hosts evolved a measure of resistance to the sea lampreys.
It was likely introduced to the Gre... | Biology and health sciences | Agnatha | Animals |
1202747 | https://en.wikipedia.org/wiki/Atlantic%20salmon | Atlantic salmon | The Atlantic salmon (Salmo salar) is a species of ray-finned fish in the family Salmonidae. It is the third largest of the Salmonidae, behind Siberian taimen and Pacific Chinook salmon, growing up to a meter in length. Atlantic salmon are found in the northern Atlantic Ocean and in rivers that flow into it. Most popula... | Biology and health sciences | Salmoniformes | Animals |
1203155 | https://en.wikipedia.org/wiki/Pedosphere | Pedosphere | The pedosphere () is the outermost layer of the Earth that is composed of soil and subject to soil formation processes. It exists at the interface of the lithosphere, atmosphere, hydrosphere and biosphere. The pedosphere is the skin of the Earth and only develops when there is a dynamic interaction between the atmosphe... | Physical sciences | Pedology | null |
1204150 | https://en.wikipedia.org/wiki/Chionoecetes | Chionoecetes | Chionoecetes is a genus of crabs that live in the northern Pacific and Atlantic Oceans.
Common names for crabs in this genus include "queen crab" (in Canada) and "spider crab". The generic name Chionoecetes means snow (, ) inhabitant (, ); means shepherd, and C. opilio is the primary species referred to as snow crab.... | Biology and health sciences | Crabs and hermit crabs | Animals |
1204311 | https://en.wikipedia.org/wiki/Autopen | Autopen | An autopen (or signing machine) is a device used for the automatic signing of a signature. Prominent individuals may be asked to provide their signatures many times a day, such as celebrities receiving requests for autographs, or politicians signing documents and correspondence in their official capacities. Consequentl... | Technology | Media and communication: Basics | null |
1204834 | https://en.wikipedia.org/wiki/Deathstalker | Deathstalker | The deathstalker (Leiurus quinquestriatus) is a species of scorpion, a member of the family Buthidae. It is also known as the Palestine yellow scorpion, Omdurman scorpion, and Naqab desert scorpion, as well as by many other colloquial names, which generally originate from the commercial captive trade of the animal. To... | Biology and health sciences | Scorpions | Animals |
1205435 | https://en.wikipedia.org/wiki/Jet%20fuel | Jet fuel | Jet fuel or aviation turbine fuel (ATF, also abbreviated avtur) is a type of aviation fuel designed for use in aircraft powered by gas-turbine engines. It is colorless to straw-colored in appearance. The most commonly used fuels for commercial aviation are Jet A and Jet A-1, which are produced to a standardized interna... | Technology | Fuel | null |
1205637 | https://en.wikipedia.org/wiki/Pyridoxine | Pyridoxine | Pyridoxine (PN) is a form of vitamin B6 found commonly in food and used as a dietary supplement. As a supplement it is used to treat and prevent pyridoxine deficiency, sideroblastic anaemia, pyridoxine-dependent epilepsy, certain metabolic disorders, side effects or complications of isoniazid use, and certain types of ... | Biology and health sciences | Vitamins | Health |
1205877 | https://en.wikipedia.org/wiki/Defoliant | Defoliant | A defoliant is any herbicidal chemical sprayed or dusted on plants to cause their leaves to fall off. Defoliants are widely used for the selective removal of weeds in managing croplands and lawns. Worldwide use of defoliants, along with the development of other herbicides and pesticides, allowed for the Green Revolutio... | Technology | Pest and disease control | null |
4639256 | https://en.wikipedia.org/wiki/Tiktaalik | Tiktaalik | Tiktaalik (; Inuktitut ) is a monospecific genus of extinct sarcopterygian (lobe-finned fish) from the Late Devonian Period, about 375 Mya (million years ago), having many features akin to those of tetrapods (four-legged animals). Tiktaalik is estimated to have had a total length of on the basis of various specimens.... | Biology and health sciences | Prehistoric amphibians | Animals |
4640505 | https://en.wikipedia.org/wiki/Sole%20%28fish%29 | Sole (fish) | Sole is a fish belonging to several families. Generally speaking, they are members of the family Soleidae, but, outside Europe, the name sole is also applied to various other similar flatfish, especially other members of the sole suborder Soleoidei as well as members of the flounder family. In European cookery, there ... | Biology and health sciences | Acanthomorpha | Animals |
4640562 | https://en.wikipedia.org/wiki/Solar%20core | Solar core | The core of the Sun is considered to extend from the center to about 0.2 of the solar radius (). It is the hottest part of the Sun and of the Solar System. It has a density of at the center, and a temperature of 15 million kelvins (15 million degrees Celsius; 27 million degrees Fahrenheit).
The core is made of hot, d... | Physical sciences | Solar System | Astronomy |
4641155 | https://en.wikipedia.org/wiki/Degree%20of%20unsaturation | Degree of unsaturation | In the analysis of the molecular formula of organic molecules, the degree of unsaturation (DU) (also known as the index of hydrogen deficiency (IHD), double bond equivalents (DBE), or unsaturation index) is a calculation that determines the total number of rings and π bonds. A formula is used in organic chemistry to he... | Physical sciences | Concepts_2 | Chemistry |
20584918 | https://en.wikipedia.org/wiki/Saturn%20V | Saturn V | The Saturn V is a retired American super heavy-lift launch vehicle developed by NASA under the Apollo program for human exploration of the Moon. The rocket was human-rated, had three stages, and was powered by liquid fuel. Flown from 1967 to 1973, it was used for nine crewed flights to the Moon, and to launch Skylab, t... | Technology | Crewed spacecraft | null |
20588316 | https://en.wikipedia.org/wiki/Wide%20area%20synchronous%20grid | Wide area synchronous grid | A wide area synchronous grid (also called an "interconnection" in North America) is a three-phase electric power grid that has regional scale or greater that operates at a synchronized utility frequency and is electrically tied together during normal system conditions. Also known as synchronous zones, the most powerfu... | Technology | Electricity transmission and distribution | null |
8008324 | https://en.wikipedia.org/wiki/Cataclasite | Cataclasite | Cataclasite is a cohesive granular fault rock. Comminution, also known as cataclasis, is an important process in forming cataclasites. They fall into the category of cataclastic rocks which are formed through faulting or fracturing in the upper crust. Cataclasites are distinguished from fault gouge, which is incohes... | Physical sciences | Metamorphic rocks | Earth science |
8012316 | https://en.wikipedia.org/wiki/Medium-capacity%20rail%20system | Medium-capacity rail system | A medium-capacity system (MCS), also known as light rapid transit or light metro, is a rail transport system with a capacity greater than light rail, but less than typical heavy-rail rapid transit. MCS trains are usually 1 to 4 cars. Most medium-capacity rail systems are automated or use light-rail type vehicles.
Sinc... | Technology | Rail and cable transport | null |
6087161 | https://en.wikipedia.org/wiki/Graupel | Graupel | Graupel (; ), also called soft hail or snow pellets, is precipitation that forms when supercooled water droplets in air are collected and freeze on falling snowflakes, forming balls of crisp, opaque rime.
Graupel is distinct from hail and ice pellets in both formation and appearance. However, both hail and graupel ar... | Physical sciences | Precipitation | Earth science |
6090525 | https://en.wikipedia.org/wiki/Neglected%20tropical%20diseases | Neglected tropical diseases | Neglected tropical diseases (NTDs) are a diverse group of tropical infections that are common in low-income populations in developing regions of Africa, Asia, and the Americas. They are caused by a variety of pathogens, such as viruses, bacteria, protozoa, and parasitic worms (helminths). These diseases are contrasted ... | Biology and health sciences | Concepts | Health |
10347359 | https://en.wikipedia.org/wiki/NGC%204151 | NGC 4151 | NGC 4151 is an intermediate spiral Seyfert galaxy with weak inner ring structure located from Earth in the constellation Canes Venatici. The galaxy was first mentioned by William Herschel on March 17, 1787; it was one of the six Seyfert galaxies described in the paper which defined the term. It is one of the nearest... | Physical sciences | Notable galaxies | Astronomy |
10356246 | https://en.wikipedia.org/wiki/Standard%20atomic%20weight | Standard atomic weight | The standard atomic weight of a chemical element (symbol Ar°(E) for element "E") is the weighted arithmetic mean of the relative isotopic masses of all isotopes of that element weighted by each isotope's abundance on Earth. For example, isotope 63Cu (Ar = 62.929) constitutes 69% of the copper on Earth, the rest being ... | Physical sciences | Periodic table | Chemistry |
19400075 | https://en.wikipedia.org/wiki/Partial%20melting | Partial melting | Partial melting is the phenomenon that occurs when a rock is subjected to temperatures high enough to cause certain minerals to melt, but not all of them. Partial melting is an important part of the formation of all igneous rocks and some metamorphic rocks (e.g., migmatites), as evidenced by a multitude of geochemical,... | Physical sciences | Geochemistry | Earth science |
18403271 | https://en.wikipedia.org/wiki/Nursing | Nursing | Nursing is a health care profession that "integrates the art and science of caring and focuses on the protection, promotion, and optimization of health and human functioning; prevention of illness and injury; facilitation of healing; and alleviation of suffering through compassionate presence". Nurses practice in many ... | Biology and health sciences | Health, fitness, and medicine | null |
1811906 | https://en.wikipedia.org/wiki/Kapellbr%C3%BCcke | Kapellbrücke | The Kapellbrücke (literally, Chapel Bridge) is a covered wooden footbridge spanning the river Reuss diagonally in the city of Lucerne in central Switzerland. Named after the nearby St. Peter's Chapel, the bridge is unique in containing a number of interior paintings dating back to the 17th century, although many of the... | Technology | Bridges | null |
1812811 | https://en.wikipedia.org/wiki/Tappet | Tappet | A tappet or valve lifter is a valve train component which converts rotational motion into linear motion in activating a valve. It is most commonly found in internal combustion engines, where it converts the rotational motion of the camshaft into linear motion of intake and exhaust valves, either directly or indirectly.... | Technology | Mechanisms | null |
1814677 | https://en.wikipedia.org/wiki/Plasmodesma | Plasmodesma | Plasmodesmata (singular: plasmodesma) are microscopic channels which traverse the cell walls of plant cells and some algal cells, enabling transport and communication between them. Plasmodesmata evolved independently in several lineages, and species that have these structures include members of the Charophyceae, Charal... | Biology and health sciences | Plant cells | Biology |
1815052 | https://en.wikipedia.org/wiki/Pteridospermatophyta | Pteridospermatophyta | Pteridospermatophyta, also called "pteridosperms" or "seed ferns" are a polyphyletic grouping of extinct seed-producing plants. The earliest fossil evidence for plants of this type are the lyginopterids of late Devonian age. They flourished particularly during the Carboniferous and Permian periods. Pteridosperms decli... | Biology and health sciences | Seed plants (except flowering plants) | Plants |
12669091 | https://en.wikipedia.org/wiki/Aphonopelma%20chalcodes | Aphonopelma chalcodes | Aphonopelma chalcodes, commonly known as the western desert tarantula, desert blonde tarantula, Arizona blonde tarantula or Mexican blonde tarantula, is a species of spider belonging to the family Theraphosidae. It has a limited distribution in the deserts of Arizona and adjacent parts of Mexico but can be very common ... | Biology and health sciences | Spiders | Animals |
20596557 | https://en.wikipedia.org/wiki/Watermelon | Watermelon | Watermelon (Citrullus lanatus) is a flowering plant species of the Cucurbitaceae family and the name of its edible fruit. A scrambling and trailing vine-like plant, it is a highly cultivated fruit worldwide, with more than 1,000 varieties.
Watermelon is grown in favorable climates from tropical to temperate regions wo... | Biology and health sciences | Cucurbitales | null |
20597793 | https://en.wikipedia.org/wiki/Diplodocus | Diplodocus | Diplodocus (, , or ) is an extinct genus of diplodocid sauropod dinosaurs known from the Late Jurassic of North America. The first fossils of Diplodocus were discovered in 1877 by S. W. Williston. The generic name, coined by Othniel Charles Marsh in 1878, is a Neo-Latin term derived from Greek διπλός (diplos) "double" ... | Biology and health sciences | Dinosaurs and prehistoric reptiles | null |
20597989 | https://en.wikipedia.org/wiki/African%20bush%20elephant | African bush elephant | The African bush elephant (Loxodonta africana), also known as the African savanna elephant, is a species of elephant native to sub-Saharan Africa. It is one of three extant elephant species and, along with the African forest elephant, one of two extant species of African elephant. It is the largest living terrestrial a... | Biology and health sciences | Proboscidea | Animals |
20598015 | https://en.wikipedia.org/wiki/Brachiosaurus | Brachiosaurus | Brachiosaurus () is a genus of sauropod dinosaur that lived in North America during the Late Jurassic, about 154to 150million years ago. It was first described by American paleontologist Elmer S. Riggs in 1903 from fossils found in the Colorado River valley in western Colorado, United States. Riggs named the dinosaur B... | Biology and health sciences | Sauropods | Animals |
20598060 | https://en.wikipedia.org/wiki/Pando%20%28tree%29 | Pando (tree) | Pando () is the world's largest tree, a quaking aspen (Populus tremuloides) located in Sevier County, Utah, United States, in the Fishlake National Forest. A male clonal organism, Pando has an estimated 47,000 stems (ramets) that appear to be individual trees but are not, because those stems are connected by a root sys... | Biology and health sciences | Malpighiales | Plants |
20598932 | https://en.wikipedia.org/wiki/Hilbert%20space | Hilbert space | In mathematics, Hilbert spaces (named after David Hilbert) allow the methods of linear algebra and calculus to be generalized from (finite-dimensional) Euclidean vector spaces to spaces that may be infinite-dimensional. Hilbert spaces arise naturally and frequently in mathematics and physics, typically as function spac... | Mathematics | Calculus and analysis | null |
3447346 | https://en.wikipedia.org/wiki/Bryopsida | Bryopsida | The Bryopsida constitute the largest class of mosses, containing 95% of all moss species. It consists of approximately 11,500 species, common throughout the whole world.
The group is distinguished by having spore capsules with teeth that are arthrodontous; the teeth are separate from each other and jointed at the base... | Biology and health sciences | Bryophytes | Plants |
3447756 | https://en.wikipedia.org/wiki/Carbon-based%20life | Carbon-based life | Carbon is a primary component of all known life on Earth, and represents approximately 45–50% of all dry biomass. Carbon compounds occur naturally in great abundance on Earth. Complex biological molecules consist of carbon atoms bonded with other elements, especially oxygen and hydrogen and frequently also nitrogen, ph... | Biology and health sciences | Biology basics | Biology |
2510070 | https://en.wikipedia.org/wiki/Dinocaridida | Dinocaridida | Dinocaridida is a proposed fossil taxon of basal arthropods, which flourished during the Cambrian period and survived up to Early Devonian. Characterized by a pair of frontal appendages and series of body flaps, the name of Dinocaridids (Greek for deinos "terrible" and Latin for caris "crab") refers to the suggested ro... | Biology and health sciences | Fossil arthropods | Animals |
2511080 | https://en.wikipedia.org/wiki/Retarded%20time | Retarded time | In electromagnetism, an electromagnetic wave (light) in vacuum travels at a finite speed (the speed of light c). The retarded time is the propagation delay between emission and observation, since it takes time for information to travel between emitter and observer. This arises due to causality.
Retarded and advanced t... | Physical sciences | Electrodynamics | Physics |
2511534 | https://en.wikipedia.org/wiki/Trans-Australian%20Railway | Trans-Australian Railway | The Trans-Australian Railway, opened in 1917, runs from Port Augusta in South Australia to Kalgoorlie in Western Australia, crossing the Nullarbor Plain in the process. As the only rail freight corridor between Western Australia and the eastern states, the line is economically and strategically important. The railway i... | Technology | Railway lines | null |
4645621 | https://en.wikipedia.org/wiki/Biozone | Biozone | In biostratigraphy, biostratigraphic units or biozones are intervals of geological strata that are defined on the basis of their characteristic fossil taxa, as opposed to a lithostratigraphic unit which is defined by the lithological properties of the surrounding rock.
A biostratigraphic unit is defined by the zone fo... | Physical sciences | Stratigraphy | Earth science |
4648679 | https://en.wikipedia.org/wiki/Culex | Culex | Culex or typical mosquitoes are a genus of mosquitoes, several species of which serve as vectors of one or more important diseases of birds, humans, and other animals. The diseases they vector include arbovirus infections such as West Nile virus, Japanese encephalitis, or St. Louis encephalitis, but also filariasis and... | Biology and health sciences | Flies (Diptera) | Animals |
4649165 | https://en.wikipedia.org/wiki/Maple | Maple | Acer is a genus of trees and shrubs commonly known as maples. The genus is placed in the soapberry family Sapindaceae. There are approximately 132 species, most of which are native to Asia, with a number also appearing in Europe, northern Africa, and North America. Only one species, Acer laurinum, extends to the Southe... | Biology and health sciences | Sapindales | null |
4649267 | https://en.wikipedia.org/wiki/Methoxychlor | Methoxychlor | Methoxychlor is a synthetic organochloride insecticide, now obsolete. Tradenames for methoxychlor include Chemform, Maralate, Methoxo, Methoxcide, Metox, and Moxie.
Usage
Methoxychlor was used to protect crops, ornamentals, livestock, and pets against fleas, mosquitoes, cockroaches, and other insects. It was intended ... | Technology | Pest and disease control | null |
4652664 | https://en.wikipedia.org/wiki/Eye%20%28cyclone%29 | Eye (cyclone) | The eye is a region of mostly calm weather at the center of a tropical cyclone. The eye of a storm is a roughly circular area, typically in diameter. It is surrounded by the eyewall, a ring of towering thunderstorms where the most severe weather and highest winds of the cyclone occur. The cyclone's lowest barometric p... | Physical sciences | Storms | Earth science |
18413531 | https://en.wikipedia.org/wiki/Sustainability | Sustainability | Sustainability is a social goal for people to co-exist on Earth over a long period of time. Definitions of this term are disputed and have varied with literature, context, and time. Sustainability usually has three dimensions (or pillars): environmental, economic, and social. Many definitions emphasize the environmenta... | Biology and health sciences | Ecology | null |
19417081 | https://en.wikipedia.org/wiki/Norfolk%20Black | Norfolk Black | The Norfolk Black, also known as the Black Spanish or Black Turkey, is a British breed of domestic turkey. It is thought to derive from birds taken to Britain from Spain, where they had arrived with Spanish explorers returning from the New World.
It is generally considered the oldest turkey breed in the UK.
History ... | Biology and health sciences | Turkeys | Animals |
19419701 | https://en.wikipedia.org/wiki/Pharmaceutical%20engineering | Pharmaceutical engineering | Pharmaceutical engineering is a branch of engineering focused on discovering, formulating, and manufacturing medication, analytical and quality control processes, and on designing, building, and improving manufacturing sites that produce drugs. It utilizes the fields of chemical engineering, biomedical engineering, pha... | Technology | Disciplines | null |
19420000 | https://en.wikipedia.org/wiki/Oryza%20glaberrima | Oryza glaberrima | Oryza glaberrima, commonly known as African rice, is one of the two domesticated rice species. It was first domesticated and grown in West Africa around 3,000 years ago. In agriculture, it has largely been replaced by higher-yielding Asian rice (O. sativa), and the number of varieties grown is declining. It still persi... | Biology and health sciences | Grains | Plants |
6092793 | https://en.wikipedia.org/wiki/Odobenocetops | Odobenocetops | Odobenocetops () is an extinct genus of small toothed whale known from Chile and Peru. Its fossils are found in Miocene-aged marine strata of the Bahía Inglesa Formation and Pisco Formation. Two species of Odobenocetops are currently recognized, O. peruvianus and the slightly younger O. leptodon.
Odobenocetops is most... | Biology and health sciences | Cetaceans | Animals |
6095269 | https://en.wikipedia.org/wiki/G-factor%20%28physics%29 | G-factor (physics) | A g-factor (also called g value) is a dimensionless quantity that characterizes the magnetic moment and angular momentum of an atom, a particle or the nucleus. It is the ratio of the magnetic moment (or, equivalently, the gyromagnetic ratio) of a particle to that expected of a classical particle of the same charge and ... | Physical sciences | Quantum mechanics | Physics |
6097297 | https://en.wikipedia.org/wiki/Linux | Linux | Linux (, ) is a family of open-source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically packaged as a Linux distribution (distro), which includes the kernel and supporting system software and libraries—most of wh... | Technology | Operating systems | null |
240462 | https://en.wikipedia.org/wiki/Spinal%20nerve | Spinal nerve | A spinal nerve is a mixed nerve, which carries motor, sensory, and autonomic signals between the spinal cord and the body. In the human body there are 31 pairs of spinal nerves, one on each side of the vertebral column. These are grouped into the corresponding cervical, thoracic, lumbar, sacral and coccygeal regions of... | Biology and health sciences | Nervous system | Biology |
240496 | https://en.wikipedia.org/wiki/Bus%20stop | Bus stop | A bus stop is a place where buses stop for passengers to get on and off the bus. The construction of bus stops tends to reflect the level of usage, where stops at busy locations may have shelters, seating, and possibly electronic passenger information systems; less busy stops may use a simple pole and flag to mark the ... | Technology | Concepts of ground transport | null |
240512 | https://en.wikipedia.org/wiki/Duiker | Duiker | A duiker is a small to medium-sized brown antelope native to sub-Saharan Africa, found in heavily wooded areas. The 22 extant species, including three sometimes considered to be subspecies of the other species, form the subfamily Cephalophinae or the tribe Cephalophini.
Taxonomy and phylogeny
The tribe Cephalophini ... | Biology and health sciences | Bovidae | Animals |
240616 | https://en.wikipedia.org/wiki/Sea%20cucumber | Sea cucumber | Sea cucumbers are echinoderms from the class Holothuroidea ( ). They are marine animals with a leathery skin and an elongated body containing a single, branched gonad. They are found on the sea floor worldwide. The number of known holothurian ( ) species worldwide is about 1,786, with the greatest number being in the ... | Biology and health sciences | Echinoderms | null |
240717 | https://en.wikipedia.org/wiki/Tangerine | Tangerine | The tangerine is a type of citrus fruit that is orange in color, that is considered either a variety of Citrus reticulata, the mandarin orange, or a closely related species, under the name Citrus tangerina, or yet as a hybrid (Citrus × tangerina) of mandarin orange varieties, with some pomelo contribution.
Etymology
... | Biology and health sciences | Citrus fruits | Plants |
240808 | https://en.wikipedia.org/wiki/Eastern%20copperhead | Eastern copperhead | The eastern copperhead (Agkistrodon contortrix), also known simply as the copperhead, is a species of venomous snake, a pit viper, endemic to eastern North America; it is a member of the subfamily Crotalinae in the family Viperidae.
The eastern copperhead has distinctive, dark brown, hourglass-shaped markings, overlai... | Biology and health sciences | Reptiles | null |
240844 | https://en.wikipedia.org/wiki/Reef | Reef | A reef is a ridge or shoal of rock, coral, or similar relatively stable material lying beneath the surface of a natural body of water. Many reefs result from natural, abiotic (non-living) processes such as deposition of sand or wave erosion planning down rock outcrops. However, reefs such as the coral reefs of tropical... | Physical sciences | Oceanic and coastal landforms | Earth science |
240849 | https://en.wikipedia.org/wiki/Islet | Islet | An islet ( ) is generally a small island. Definitions vary, and are not precise, but some suggest that an islet is a very small, often unnamed, island with little or no vegetation to support human habitation. It may be made of rock, sand and/or hard coral; may be permanent or tidal (i.e. surfaced reef or seamount); and... | Physical sciences | Oceanic and coastal landforms | Earth science |
240920 | https://en.wikipedia.org/wiki/Blue%20shark | Blue shark | The blue shark (Prionace glauca), also known as the great blue shark, is a species of requiem shark, in the family Carcharhinidae and the only member of its genus which inhabits deep waters in the world's temperate and tropical oceans. Averaging around and preferring cooler waters, the blue shark migrates long distanc... | Biology and health sciences | Sharks | Animals |
240935 | https://en.wikipedia.org/wiki/SN1%20reaction | SN1 reaction | {{DISPLAYTITLE:SN1 reaction}}
The unimolecular nucleophilic substitution (SN1) reaction is a substitution reaction in organic chemistry. The Hughes-Ingold symbol of the mechanism expresses two properties—"SN" stands for "nucleophilic substitution", and the "1" says that the rate-determining step is unimolecular. Thus,... | Physical sciences | Organic reactions | Chemistry |
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