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21438200 | https://en.wikipedia.org/wiki/Synesthesia | Synesthesia | Synesthesia (American English) or synaesthesia (British English) is a perceptual phenomenon in which stimulation of one sensory or cognitive pathway leads to involuntary experiences in a second sensory or cognitive pathway. People with synesthesia may experience colors when listening to music, see shapes when smelling ... | Biology and health sciences | Sensory nervous system | Biology |
21438242 | https://en.wikipedia.org/wiki/Lava | Lava | Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or underwater, usually at temperatures from . The volcanic rock resulting from subsequ... | Physical sciences | Volcanic landforms | null |
21438807 | https://en.wikipedia.org/wiki/Oncology | Oncology | Oncology is a branch of medicine that deals with the study, treatment, diagnosis, and prevention of cancer. A medical professional who practices oncology is an oncologist. The name's etymological origin is the Greek word ὄγκος (ónkos), meaning "tumor", "volume" or "mass". Oncology is concerned with:
The diagnosis of a... | Biology and health sciences | Fields of medicine | null |
2858897 | https://en.wikipedia.org/wiki/Demersal%20fish | Demersal fish | Demersal fish, also known as groundfish, live and feed on or near the bottom of seas or lakes (the demersal zone). They occupy the sea floors and lake beds, which usually consist of mud, sand, gravel or rocks. In coastal waters, they are found on or near the continental shelf, and in deep waters, they are found on or n... | Biology and health sciences | Fishes by habitat | Animals |
2859751 | https://en.wikipedia.org/wiki/Pouch%20%28marsupial%29 | Pouch (marsupial) | The pouch is a distinguishing feature of female marsupials and monotremes, and rarely in males as well, such as in the yapok and the extinct thylacine. The name marsupial is derived from the Latin marsupium, meaning "pouch". This is due to the occurrence of epipubic bones, a pair of bones projecting forward from the pe... | Biology and health sciences | Reproductive system | Biology |
2863567 | https://en.wikipedia.org/wiki/The%20Iron%20Bridge | The Iron Bridge | The Iron Bridge is a cast iron arch bridge that crosses the River Severn in Shropshire, England. Opened in 1781, it was the first major bridge in the world to be made of cast iron. Its success inspired the widespread use of cast iron as a structural material, and today the bridge is celebrated as a symbol of the Indust... | Technology | Bridges | null |
3833397 | https://en.wikipedia.org/wiki/Influenza%20B%20virus | Influenza B virus | Influenza B virus is the only species in the genus Betainfluenzavirus in the virus family Orthomyxoviridae.
Influenza B virus is only known to infect certain mammal species, including humans, ferrets, pigs, and seals. This limited host range is apparently responsible for the lack of influenza pandemics associated with... | Biology and health sciences | Specific viruses | Health |
3837188 | https://en.wikipedia.org/wiki/Grapsus%20grapsus | Grapsus grapsus | Grapsus grapsus is one of the most common crabs along the western coast of the Americas. It is known as the red rock crab, or, along with other crabs such as Percnon gibbesi, as the Sally Lightfoot crab.
Distribution
Grapsus grapsus is found along the Pacific coast of Mexico, Central America, and South America (as far... | Biology and health sciences | Crabs and hermit crabs | Animals |
3838790 | https://en.wikipedia.org/wiki/Arthropleura | Arthropleura | is an extinct genus of massive myriapod that lived in what is now Europe and North America around 345 to 290 million years ago, from the Viséan stage of the lower Carboniferous Period to the Sakmarian stage of the lower Permian Period. It is related to millipedes, and was capable of reaching at least in length, possib... | Biology and health sciences | Fossil arthropods | Animals |
3839250 | https://en.wikipedia.org/wiki/Common%20bream | Common bream | The common bream (Abramis brama), also known as the freshwater bream, bream, bronze bream, carp bream or sweaty bream, is a European species of freshwater fish in the family Cyprinidae. It is now considered to be the only species in the genus Abramis.
Range and habitat
The common bream's home range is Europe north of... | Biology and health sciences | Cypriniformes | Animals |
24412554 | https://en.wikipedia.org/wiki/Anoplotheriidae | Anoplotheriidae | Anoplotheriidae is an extinct family of artiodactyl ungulates. They were endemic to Europe during the Eocene and Oligocene epochs about 44—30 million years ago. Its name is derived from the ("unarmed") and θήριον ("beast"), translating as "unarmed beast".
Ecology
Species of Anoplotheriidae varied substantially in si... | Biology and health sciences | Other artiodactyla | Animals |
1417480 | https://en.wikipedia.org/wiki/Rome%20Metro | Rome Metro | The Rome Metro () is a rapid transit system that operates in Rome, Italy. It started operation in 1955, making it the oldest in the country.
The Metro comprises three lines – A (orange), B (blue) and C (green) – which operate on of route, serving 73 stations. It has a daily ridership of approximately 820,000 passenge... | Technology | Italy | null |
1419898 | https://en.wikipedia.org/wiki/Ribbon%20eel | Ribbon eel | The ribbon eel (Rhinomuraena quaesita), also known as the leaf-nosed moray eel or bernis eel, is a species of moray eel, the only member of the genus Rhinomuraena. The ribbon eel is found in sand burrows and reefs in the Indo-Pacific Ocean. Although generally placed in the moray eel family Muraenidae, it has several di... | Biology and health sciences | Anguilliformes | Animals |
1420406 | https://en.wikipedia.org/wiki/Sex%20linkage | Sex linkage | Sex linked describes the sex-specific reading patterns of inheritance and presentation when a gene mutation (allele) is present on a sex chromosome (allosome) rather than a non-sex chromosome (autosome). In humans, these are termed X-linked recessive, X-linked dominant and Y-linked. The inheritance and presentation of ... | Biology and health sciences | Genetics | Biology |
1421035 | https://en.wikipedia.org/wiki/Giant%20otter%20shrew | Giant otter shrew | The giant otter shrew (Potamogale velox) is a semiaquatic, carnivorous afrotherian mammal. It is found in the main rainforest block of central Africa from Nigeria to Zambia, with a few isolated populations in Kenya and Uganda. It lives in streams, wetlands and slow flowing larger rivers. It is the only species in the g... | Biology and health sciences | Other afrotheres | Animals |
27697009 | https://en.wikipedia.org/wiki/API | API | An application programming interface (API) is a connection between computers or between computer programs. It is a type of software interface, offering a service to other pieces of software. A document or standard that describes how to build such a connection or interface is called an API specification. A computer syst... | Technology | Software development: General | null |
28981081 | https://en.wikipedia.org/wiki/LibreOffice | LibreOffice | LibreOffice () is a free and open-source office productivity software suite, a project of The Document Foundation (TDF). It was forked in 2010 from OpenOffice.org, an open-sourced version of the earlier StarOffice. It consists of programs for word processing; creating and editing spreadsheets, slideshows, diagrams, and... | Technology | Office and data management | null |
922939 | https://en.wikipedia.org/wiki/Acorn | Acorn | The acorn is the nut of the oaks and their close relatives (genera Quercus, Notholithocarpus and Lithocarpus, in the family Fagaceae). It usually contains a seedling surrounded by two cotyledons (seedling leaves), enclosed in a tough shell known as the pericarp, and borne in a cup-shaped cupule. Acorns are long and o... | Biology and health sciences | Nuts | Plants |
923714 | https://en.wikipedia.org/wiki/Antiaromaticity | Antiaromaticity | Antiaromaticity is a chemical property of a cyclic molecule with a π electron system that has higher energy, i.e., it is less stable due to the presence of 4n delocalised (π or lone pair) electrons in it, as opposed to aromaticity. Unlike aromatic compounds, which follow Hückel's rule ([4n+2] π electrons) and are highl... | Physical sciences | Aromatic hydrocarbons | Chemistry |
923872 | https://en.wikipedia.org/wiki/Quern-stone | Quern-stone | Quern-stones are stone tools for hand-grinding a wide variety of materials, especially for various types of grains. They are used in pairs. The lower stationary stone of early examples is called a saddle quern, while the upper mobile stone is called a muller, rubber, or handstone. The upper stone was moved in a back-an... | Technology | Industrial machinery | null |
924328 | https://en.wikipedia.org/wiki/Mole%20cricket | Mole cricket | Mole crickets are members of the insect family Gryllotalpidae, in the order Orthoptera (grasshoppers, locusts, and crickets). Mole crickets are cylindrical-bodied, fossorial insects about long as adults, with small eyes and shovel-like fore limbs highly developed for burrowing. They are present in many parts of the wo... | Biology and health sciences | Orthoptera | null |
924422 | https://en.wikipedia.org/wiki/Hump-winged%20grig | Hump-winged grig | Hump-winged grigs are insects belonging to the genus Cyphoderris, in the family Prophalangopsidae, and superfamily Grylloidea (crickets). In modern times they are known only in northwestern North America and central Asia, but the fossil record indicates a wider distribution in the past.
There are three species in Nort... | Biology and health sciences | Orthoptera | Animals |
925570 | https://en.wikipedia.org/wiki/Skutterudite | Skutterudite | Skutterudite is a cobalt arsenide mineral containing variable amounts of nickel and iron substituting for cobalt with the ideal formula CoAs3. Some references give the arsenic a variable formula subscript of 2–3. High nickel varieties are referred to as nickel-skutterudite, previously chloanthite. It is a hydrothermal ... | Physical sciences | Minerals | Earth science |
925638 | https://en.wikipedia.org/wiki/Forsterite | Forsterite | Forsterite (Mg2SiO4; commonly abbreviated as Fo; also known as white olivine) is the magnesium-rich end-member of the olivine solid solution series. It is isomorphous with the iron-rich end-member, fayalite. Forsterite crystallizes in the orthorhombic system (space group Pbnm) with cell parameters a 4.75 Å (0.475 nm), ... | Physical sciences | Silicate minerals | Earth science |
33051527 | https://en.wikipedia.org/wiki/Cell%20membrane | Cell membrane | The cell membrane (also known as the plasma membrane or cytoplasmic membrane, and historically referred to as the plasmalemma) is a biological membrane that separates and protects the interior of a cell from the outside environment (the extracellular space). The cell membrane consists of a lipid bilayer, made up of two... | Biology and health sciences | Organelles and other cell parts | null |
3842182 | https://en.wikipedia.org/wiki/Cord%20%28unit%29 | Cord (unit) | The cord is a unit of measure of dry volume used to measure firewood and pulpwood in the United States and Canada.
A cord is the amount of wood that, when "racked and well stowed" (arranged so pieces are aligned, parallel, touching, and compact), occupies a volume of . This corresponds to a well-stacked woodpile high... | Physical sciences | Volume | Basics and measurement |
3842527 | https://en.wikipedia.org/wiki/Dry%20measure | Dry measure | Dry measures are units of volume to measure bulk commodities that are not fluids and that were typically shipped and sold in standardized containers such as barrels. They have largely been replaced by the units used for measuring volumes in the metric system and liquid volumes in the imperial system but are still used ... | Physical sciences | Basics | Basics and measurement |
3842768 | https://en.wikipedia.org/wiki/Network%20on%20a%20chip | Network on a chip | A network on a chip or network-on-chip (NoC or ) is a network-based communications subsystem on an integrated circuit ("microchip"), most typically between modules in a system on a chip (SoC). The modules on the IC are typically semiconductor IP cores schematizing various functions of the computer system, and are d... | Technology | Semiconductors | null |
24425329 | https://en.wikipedia.org/wiki/Belt%20Supergroup | Belt Supergroup | The Belt Supergroup is an assemblage of primarily fine-grained sedimentary rocks and mafic intrusive rocks of late Precambrian (Mesoproterozoic) age. It is more than thick, covers an area of some 200,000 km2 (77,220 sq. mi), and is considered to be one of the world's best-exposed and most accessible sequences of Mesop... | Physical sciences | Geologic features | Earth science |
2866340 | https://en.wikipedia.org/wiki/Equipotential | Equipotential | In mathematics and physics, an equipotential or isopotential refers to a region in space where every point is at the same potential. This usually refers to a scalar potential (in that case it is a level set of the potential), although it can also be applied to vector potentials. An equipotential of a scalar potential ... | Physical sciences | Classical mechanics | Physics |
2063011 | https://en.wikipedia.org/wiki/Love%20wave | Love wave | In elastodynamics, Love waves, named after Augustus Edward Hough Love, are horizontally polarized surface waves. The Love wave is a result of the interference of many shear waves (S-waves) guided by an elastic layer, which is welded to an elastic half space on one side while bordering a vacuum on the other side. In sei... | Physical sciences | Seismology | Earth science |
2063352 | https://en.wikipedia.org/wiki/Mechanised%20agriculture | Mechanised agriculture | Mechanised agriculture or agricultural mechanization is the use of machinery and equipment, ranging from simple and basic hand tools to more sophisticated, motorized equipment and machinery, to perform agricultural operations. In modern times, powered machinery has replaced many farm task formerly carried out by manual... | Technology | Agriculture_2 | null |
2063359 | https://en.wikipedia.org/wiki/Chi%20%28unit%29 | Chi (unit) | The chi (Tongyong Pinyin chih) is a traditional Chinese unit of length. Although it is often translated as the "", its length was originally derived from the distance measured by a human hand, from the tip of the thumb to the tip of the forefinger, and is similar to the ancient span. It first appeared during China's Sh... | Physical sciences | East Asian | Basics and measurement |
2064083 | https://en.wikipedia.org/wiki/Layering | Layering | Layering is a vegetative propagation technique where the stem or branch of a plant is manipulated to promote root development while still attached to the parent plant. Once roots are established, the new plant can be detached from the parent and planted. Layering is utilized by horticulturists to propagate desirable pl... | Technology | Horticulture | null |
2065886 | https://en.wikipedia.org/wiki/BET%20theory | BET theory | Brunauer–Emmett–Teller (BET) theory aims to explain the physical adsorption of gas molecules on a solid surface and serves as the basis for an important analysis technique for the measurement of the specific surface area of materials. The observations are very often referred to as physical adsorption or physisorption.... | Physical sciences | Other separations | Chemistry |
2067207 | https://en.wikipedia.org/wiki/Kolkata%20Metro | Kolkata Metro | The Kolkata Metro is a rapid transit system serving the city of Kolkata and the Kolkata Metropolitan Region in West Bengal, India. Opened in 1984, it was the first operational rapid transit system in India. Currently it is the second busiest and fifth longest rapid transit system in India. As of now, it has one fully o... | Technology | India | null |
33067333 | https://en.wikipedia.org/wiki/Splinter | Splinter | A splinter (also known as a sliver) is a fragment of a larger object, or a foreign body that penetrates or is purposely injected into a body. The foreign body must be lodged inside tissue to be considered a splinter. Splinters may cause initial pain through ripping of flesh and muscle, or infection through bacteria on ... | Biology and health sciences | Types | Health |
1423441 | https://en.wikipedia.org/wiki/Free%20range | Free range | Free range denotes a method of farming husbandry where the animals can roam freely outdoors for at least part of the day, rather than being confined in an enclosure for 24 hours each day.
On many farms, the outdoors ranging area is fenced, thereby technically making this an enclosure, however, free range systems usuall... | Technology | Agriculture_2 | null |
1424029 | https://en.wikipedia.org/wiki/Fucus | Fucus | Fucus is a genus of brown algae found in the intertidal zones of rocky seashores almost throughout the world.
Description and life cycle
The thallus is perennial with an irregular or disc-shaped holdfast or with haptera. The erect portion of the thallus is dichotomous or subpinnately branched, flattened and with a dis... | Biology and health sciences | SAR supergroup | Plants |
1424309 | https://en.wikipedia.org/wiki/Differential%20equation | Differential equation | In mathematics, a differential equation is an equation that relates one or more unknown functions and their derivatives. In applications, the functions generally represent physical quantities, the derivatives represent their rates of change, and the differential equation defines a relationship between the two. Such rel... | Mathematics | Calculus and analysis | null |
1424877 | https://en.wikipedia.org/wiki/Scotia%20plate | Scotia plate | The Scotia plate () is a minor tectonic plate on the edge of the South Atlantic and Southern oceans. Thought to have formed during the early Eocene with the opening of the Drake Passage that separates Antarctica and South America, it is a minor plate whose movement is largely controlled by the two major plates that su... | Physical sciences | Tectonic plates | Earth science |
1425422 | https://en.wikipedia.org/wiki/Electric%20arc%20furnace | Electric arc furnace | An electric arc furnace (EAF) is a furnace that heats material by means of an electric arc.
Industrial arc furnaces range in size from small units of approximately one-tonne capacity (used in foundries for producing cast iron products) up to about 400-tonne units used for secondary steelmaking. Arc furnaces used in re... | Technology | Metallurgy | null |
1425534 | https://en.wikipedia.org/wiki/Multipole%20expansion | Multipole expansion | A multipole expansion is a mathematical series representing a function that depends on angles—usually the two angles used in the spherical coordinate system (the polar and azimuthal angles) for three-dimensional Euclidean space, . Multipole expansions are useful because, similar to Taylor series, oftentimes only the fi... | Mathematics | Sequences and series | null |
31557892 | https://en.wikipedia.org/wiki/Ductility%20%28Earth%20science%29 | Ductility (Earth science) | In Earth science, ductility refers to the capacity of a rock to deform to large strains without macroscopic fracturing. Such behavior may occur in unlithified or poorly lithified sediments, in weak materials such as halite or at greater depths in all rock types where higher temperatures promote crystal plasticity and h... | Physical sciences | Structural geology | Earth science |
6832171 | https://en.wikipedia.org/wiki/Saurischia | Saurischia | Saurischia ( , meaning "reptile-hipped" from the Greek () meaning 'lizard' and () meaning 'hip joint') is one of the two basic divisions of dinosaurs (the other being Ornithischia), classified by their hip structure. Saurischia and Ornithischia were originally called orders by Harry Seeley in 1888 though today most ... | Biology and health sciences | Dinosaurs | Animals |
3853380 | https://en.wikipedia.org/wiki/Stem-cell%20therapy | Stem-cell therapy | Stem-cell therapy uses stem cells to treat or prevent a disease or condition. , the only FDA-approved therapy using stem cells is hematopoietic stem cell transplantation. This usually takes the form of a bone marrow or peripheral blood stem cell transplantation, but the cells can also be derived from umbilical cord blo... | Technology | Biotechnology | null |
3854225 | https://en.wikipedia.org/wiki/Waveguide%20%28radio%20frequency%29 | Waveguide (radio frequency) | In radio-frequency engineering and communications engineering, a waveguide is a hollow metal pipe used to carry radio waves. This type of waveguide is used as a transmission line mostly at microwave frequencies, for such purposes as connecting microwave transmitters and receivers to their antennas, in equipment such as... | Physical sciences | Electromagnetic radiation | Physics |
21464996 | https://en.wikipedia.org/wiki/Hospice | Hospice | Hospice care is a type of health care that focuses on the palliation of a terminally ill patient's pain and symptoms and attending to their emotional and spiritual needs at the end of life. Hospice care prioritizes comfort and quality of life by reducing pain and suffering. Hospice care provides an alternative to thera... | Biology and health sciences | Medical procedures: General | Health |
27716891 | https://en.wikipedia.org/wiki/Morphism | Morphism | In mathematics, a morphism is a concept of category theory that generalizes structure-preserving maps such as homomorphism between algebraic structures, functions from a set to another set, and continuous functions between topological spaces. Although many examples of morphisms are structure-preserving maps, morphisms ... | Mathematics | Category theory | null |
927051 | https://en.wikipedia.org/wiki/RYB%20color%20model | RYB color model | RYB (an abbreviation of red–yellow–blue) is a subtractive color model used in art and applied design in which red, yellow, and blue pigments are considered primary colors. Under traditional color theory, this set of primary colors was advocated by Moses Harris, Michel Eugène Chevreul, Johannes Itten and Josef Albers, a... | Physical sciences | Basics | Physics |
927572 | https://en.wikipedia.org/wiki/Guernsey%20cattle | Guernsey cattle | The Guernsey is a breed of dairy cattle from the island of Guernsey in the Channel Islands. It is fawn or red and white in colour, and is hardy and docile. Its milk is rich in flavour, high in fat and protein, and has a golden-yellow tinge due to its high β-carotene content. The Guernsey is one of three Channel Island ... | Biology and health sciences | Cattle | Animals |
927752 | https://en.wikipedia.org/wiki/HFS%20Plus | HFS Plus | HFS Plus or HFS+ (also known as Mac OS Extended or HFS Extended) is a journaling file system developed by Apple Inc. It replaced the Hierarchical File System (HFS) as the primary file system of Apple computers with the 1998 release of Mac OS 8.1. HFS+ continued as the primary Mac OS X file system until it was itself ... | Technology | Data storage and memory | null |
928680 | https://en.wikipedia.org/wiki/Grass%20snake | Grass snake | The grass snake (Natrix natrix), sometimes called the ringed snake or water snake, is a Eurasian semi-aquatic non-venomous colubrid snake. It is often found near water and feeds almost exclusively on amphibians.
Subspecies
Many subspecies are recognized, including:
Natrix natrix helvetica (Lacépède, 1789) was formerl... | Biology and health sciences | Snakes | Animals |
929532 | https://en.wikipedia.org/wiki/Haemophilus%20influenzae | Haemophilus influenzae | Haemophilus influenzae (formerly called Pfeiffer's bacillus or Bacillus influenzae) is a Gram-negative, non-motile, coccobacillary, facultatively anaerobic, capnophilic pathogenic bacterium of the family Pasteurellaceae. The bacteria are mesophilic and grow best at temperatures between 35 and 37 °C.
H. influenzae was ... | Biology and health sciences | Gram-negative bacteria | Plants |
930016 | https://en.wikipedia.org/wiki/Ascidiacea | Ascidiacea | Ascidiacea, commonly known as the ascidians or sea squirts, is a paraphyletic class in the subphylum Tunicata of sac-like marine invertebrate filter feeders. Ascidians are characterized by a tough outer test or "tunic" made of the polysaccharide cellulose.
Ascidians are found all over the world, usually in shallow wat... | Biology and health sciences | Chordata (except vertebrates) | Animals |
25853144 | https://en.wikipedia.org/wiki/Frecciarossa | Frecciarossa | Frecciarossa (; from , "red arrow") is a high-speed train of the Italian national train operator, Trenitalia, as well as a member of the train category Le Frecce. The name was introduced in 2008 after it had previously been known as Eurostar Italia. Frecciarossa trains operate at speeds of up to . Frecciarossa is the p... | Technology | High-speed rail | null |
2875647 | https://en.wikipedia.org/wiki/Energy%E2%80%93momentum%20relation | Energy–momentum relation | In physics, the energy–momentum relation, or relativistic dispersion relation, is the relativistic equation relating total energy (which is also called relativistic energy) to invariant mass (which is also called rest mass) and momentum. It is the extension of mass–energy equivalence for bodies or systems with non-zero... | Physical sciences | Theory of relativity | Physics |
2876360 | https://en.wikipedia.org/wiki/Potassium%20manganate | Potassium manganate | Potassium manganate is the inorganic compound with the formula . This green-colored salt is an intermediate in the industrial synthesis of potassium permanganate (), a common chemical. Occasionally, potassium manganate and potassium permanganate are confused, but each compound's properties are distinct.
Structure and ... | Physical sciences | Metallic oxyanions | Chemistry |
38540045 | https://en.wikipedia.org/wiki/Aqueduct%20%28water%20supply%29 | Aqueduct (water supply) | An aqueduct is a watercourse constructed to carry water from a source to a distribution point far away. In modern engineering, the term aqueduct is used for any system of pipes, ditches, canals, tunnels, and other structures used for this purpose. The term aqueduct also often refers specifically to a bridge carrying an... | Technology | Food, water and health | null |
28996847 | https://en.wikipedia.org/wiki/Geophysical%20fluid%20dynamics | Geophysical fluid dynamics | Geophysical fluid dynamics, in its broadest meaning, refers to the fluid dynamics of naturally occurring flows, such as lava flows, oceans, and planetary atmospheres, on Earth and other planets.
Two physical features that are common to many of the phenomena studied in geophysical fluid dynamics are rotation of the flu... | Physical sciences | Geophysics | Earth science |
29007035 | https://en.wikipedia.org/wiki/Inkayacu | Inkayacu | Inkayacu is a genus of extinct penguins. It lived in what is now Peru during the Late Eocene, around 36 million years ago. A nearly complete skeleton was discovered in 2008 and includes fossilized feathers, the first known in penguins. A study of the melanosomes, pigment-containing organelles within the feathers, indic... | Biology and health sciences | Prehistoric birds | Animals |
2068726 | https://en.wikipedia.org/wiki/History%20of%20Earth | History of Earth | The natural history of Earth concerns the development of planet Earth from its formation to the present day. Nearly all branches of natural science have contributed to understanding of the main events of Earth's past, characterized by constant geological change and biological evolution.
The geological time scale (GTS)... | Physical sciences | Earth science | null |
2070264 | https://en.wikipedia.org/wiki/Calamine | Calamine | Calamine, also known as calamine lotion, is a medication made from powdered calamine mineral that is used to treat mild itchiness. Conditions treated include sunburn, insect bites, poison ivy, poison oak, and other mild skin conditions. It may also help dry out secretions resulting from skin irritation. It is applied o... | Biology and health sciences | Specific drugs | Health |
2070483 | https://en.wikipedia.org/wiki/Spindle%20%28textiles%29 | Spindle (textiles) | A spindle is a straight spike, usually made from wood, used for spinning, twisting fibers such as wool, flax, hemp, cotton into yarn. It is often weighted at either the bottom, middle, or top, commonly by a disc or spherical object called a whorl; many spindles, however, are weighted simply by thickening their shape to... | Technology | Spinning | null |
2071899 | https://en.wikipedia.org/wiki/Xiphactinus | Xiphactinus | Xiphactinus (from Latin and Greek for "sword-ray") is an extinct genus of large predatory marine ray-finned fish that lived during the late Albian to the late Maastrichtian. The genus grew up to in length, and superficially resembled a gargantuan, fanged tarpon. It is a member of the extinct order Ichthyodectiformes, ... | Biology and health sciences | Prehistoric osteichthyans | Animals |
21476681 | https://en.wikipedia.org/wiki/Scimitar | Scimitar | A scimitar ( or ) is a single-edged sword with a convex curved blade of about 76.2 to 91.44cm (30 to 36 inches) associated with Middle Eastern, South Asian, or North African cultures. A European term, scimitar does not refer to one specific sword type, but an assortment of different Eastern curved swords inspired by ty... | Technology | Swords | null |
21481546 | https://en.wikipedia.org/wiki/Wheelchair | Wheelchair | A wheelchair is a mobilized form of chair using 2 or more wheels, a footrest, and an armrest usually cushioned. It is used when walking is difficult or impossible to do due to illnesses, injury, disabilities, or age-related health conditions. Wheelchairs provide mobility, postural support, and freedom to those who cann... | Technology | Devices | null |
21481963 | https://en.wikipedia.org/wiki/Cricket%20%28insect%29 | Cricket (insect) | Crickets are orthopteran insects which are related to bush crickets, and, more distantly, to grasshoppers. In older literature, such as Imms, "crickets" were placed at the family level (i.e. Gryllidae), but contemporary authorities including Otte now place them in the superfamily Grylloidea. The word has been used in ... | Biology and health sciences | Orthoptera | null |
3857434 | https://en.wikipedia.org/wiki/Scansoriopterygidae | Scansoriopterygidae | Scansoriopterygidae (meaning "climbing wings") is an extinct family of climbing and gliding maniraptoran dinosaurs. Scansoriopterygids are known from five well-preserved fossils, representing four species, unearthed in the Tiaojishan Formation fossil beds (dating to the mid-late Jurassic Period) of Liaoning and Hebei, ... | Biology and health sciences | Theropods | Animals |
3861311 | https://en.wikipedia.org/wiki/Pupfish | Pupfish | Pupfish are a group of small killifish belonging to ten genera of the family Cyprinodontidae of ray-finned fish. Pupfish are especially noted for being found in extreme and isolated situations. They are primarily found in North America, South America, and the Caribbean region. As of August 2006, 120 nominal species and... | Biology and health sciences | Acanthomorpha | Animals |
34578727 | https://en.wikipedia.org/wiki/Variable%20renewable%20energy | Variable renewable energy | Variable renewable energy (VRE) or intermittent renewable energy sources (IRES) are renewable energy sources that are not dispatchable due to their fluctuating nature, such as wind power and solar power, as opposed to controllable renewable energy sources, such as dammed hydroelectricity or bioenergy, or relatively con... | Technology | Concepts | null |
1427634 | https://en.wikipedia.org/wiki/Rate-determining%20step | Rate-determining step | In chemical kinetics, the overall rate of a reaction is often approximately determined by the slowest step, known as the rate-determining step (RDS or RD-step or r/d step) or rate-limiting step. For a given reaction mechanism, the prediction of the corresponding rate equation (for comparison with the experimental rate ... | Physical sciences | Kinetics | Chemistry |
1427763 | https://en.wikipedia.org/wiki/Collision%20theory | Collision theory | Collision theory is a principle of chemistry used to predict the rates of chemical reactions. It states that when suitable particles of the reactant hit each other with the correct orientation, only a certain amount of collisions result in a perceptible or notable change; these successful changes are called successful... | Physical sciences | Kinetics | Chemistry |
1430910 | https://en.wikipedia.org/wiki/Stolon | Stolon | In biology, stolons (from Latin stolō, genitive stolōnis – "branch"), also known as runners, are horizontal connections between parts of an organism. They may be part of the organism, or of its skeleton. Typically, animal stolons are exoskeletons (external skeletons).
In botany
In botany, stolons are plant stems which... | Biology and health sciences | Plant anatomy and morphology: General | Biology |
1431156 | https://en.wikipedia.org/wiki/Agrochemical | Agrochemical | An agrochemical or agrichemical, a contraction of agricultural chemical, is a chemical product used in industrial agriculture. Agrichemical typically refers to biocides (pesticides including insecticides, herbicides, fungicides and nematicides) alongside synthetic fertilizers. It may also include hormones and other che... | Technology | Pest and disease control | null |
1431342 | https://en.wikipedia.org/wiki/Potential%20theory | Potential theory | In mathematics and mathematical physics, potential theory is the study of harmonic functions.
The term "potential theory" was coined in 19th-century physics when it was realized that two fundamental forces of nature known at the time, namely gravity and the electrostatic force, could be modeled using functions called ... | Mathematics | Harmonic analysis | null |
29018709 | https://en.wikipedia.org/wiki/Correlation%20coefficient | Correlation coefficient | A correlation coefficient is a numerical measure of some type of linear correlation, meaning a statistical relationship between two variables. The variables may be two columns of a given data set of observations, often called a sample, or two components of a multivariate random variable with a known distribution.
Seve... | Mathematics | Probability | null |
5210590 | https://en.wikipedia.org/wiki/Lemniscate | Lemniscate | In algebraic geometry, a lemniscate ( or ) is any of several figure-eight or -shaped curves. The word comes from the Latin , meaning "decorated with ribbons", from the Greek (), meaning "ribbon", or which alternatively may refer to the wool from which the ribbons were made.
Curves that have been called a lemniscate i... | Mathematics | Two-dimensional space | null |
5217516 | https://en.wikipedia.org/wiki/Clothes%20moth | Clothes moth | Clothes moth or clothing moth is the common name for several species of moth considered to be pests, whose larvae eat animal fibres (hairs), including clothing and other fabrics.
These include:
Tineola bisselliella, the common clothes moth or webbing clothes moth
Tinea pellionella, the case-bearing clothes moth. Obs... | Biology and health sciences | Lepidoptera | Animals |
2878626 | https://en.wikipedia.org/wiki/Optical%20computing | Optical computing | Optical computing or photonic computing uses light waves produced by lasers or incoherent sources for data processing, data storage or data communication for computing. For decades, photons have shown promise to enable a higher bandwidth than the electrons used in conventional computers (see optical fibers).
Most rese... | Technology | Computer architecture concepts | null |
2882046 | https://en.wikipedia.org/wiki/Hass%20avocado | Hass avocado | The Hass avocado is a variety of avocado with dark green, bumpy skin. It was first grown and sold by Southern California mail carrier and amateur horticulturist Rudolph Hass, who also gave it his name.
The Hass avocado is a large-sized fruit weighing 200 to 300 grams (7 to 10 oz). When ripe, the skin becomes a dark pu... | Biology and health sciences | Other culinary fruits | Plants |
24458151 | https://en.wikipedia.org/wiki/Planetary%20boundaries | Planetary boundaries | Planetary boundaries are a framework to describe limits to the impacts of human activities on the Earth system. Beyond these limits, the environment may not be able to self-regulate anymore. This would mean the Earth system would leave the period of stability of the Holocene, in which human society developed. The frame... | Physical sciences | Earth science basics: General | Earth science |
24462957 | https://en.wikipedia.org/wiki/Hazard | Hazard | A hazard is a potential source of harm. Substances, events, or circumstances can constitute hazards when their nature would potentially allow them to cause damage to health, life, property, or any other interest of value. The probability of that harm being realized in a specific incident, combined with the magnitude of... | Biology and health sciences | Health and fitness: General | Health |
33087778 | https://en.wikipedia.org/wiki/Pressurized%20heavy-water%20reactor | Pressurized heavy-water reactor | A pressurized heavy-water reactor (PHWR) is a nuclear reactor that uses heavy water (deuterium oxide D2O) as its coolant and neutron moderator. PHWRs frequently use natural uranium as fuel, but sometimes also use very low enriched uranium. The heavy water coolant is kept under pressure to avoid boiling, allowing it to... | Technology | Power generation | null |
33092462 | https://en.wikipedia.org/wiki/Cirrostratus%20nebulosus | Cirrostratus nebulosus | Cirrostratus nebulosus is a type of high-level cirrostratus cloud. The name cirrostratus nebulosus is derived from Latin, the adjective nebulosus meaning "full of vapor, foggy, cloudy, dark". Cirrostratus nebulosus is one of the two most common forms that cirrostratus often takes, with the other being cirrostratus fibr... | Physical sciences | Clouds | Earth science |
33094374 | https://en.wikipedia.org/wiki/Telecommunications | Telecommunications | Telecommunication, often used in its plural form or abbreviated as telecom, is the transmission of information over a distance using electronic means, typically through cables, radio waves, or other communication technologies. These means of transmission may be divided into communication channels for multiplexing, allo... | Technology | Media and communication | null |
930437 | https://en.wikipedia.org/wiki/Sungrazing%20comet | Sungrazing comet | A sungrazing comet is a comet that passes extremely close to the Sun at perihelion – sometimes within a few thousand kilometres of the Sun's surface. Although small sungrazers can completely evaporate during such a close approach to the Sun, larger sungrazers can survive many perihelion passages. However, the strong ev... | Physical sciences | Planetary science | Astronomy |
931370 | https://en.wikipedia.org/wiki/Tropical%20rainforest | Tropical rainforest | Tropical rainforests are dense and warm rainforests with high rainfall typically found between 10° north and south of the Equator. They are a subset of the tropical forest biome that occurs roughly within the 28° latitudes (in the torrid zone between the Tropic of Cancer and Tropic of Capricorn). Tropical rainforests a... | Physical sciences | Forests | null |
931806 | https://en.wikipedia.org/wiki/Greater%20kudu | Greater kudu | The greater kudu (Tragelaphus strepsiceros) is a large woodland antelope, found throughout eastern and southern Africa. Despite occupying such widespread territory, they are sparsely populated in most areas due to declining habitat, deforestation, and poaching. The greater kudu is one of two species commonly known as ... | Biology and health sciences | Bovidae | Animals |
931973 | https://en.wikipedia.org/wiki/Myiasis | Myiasis | Myiasis ( ), also known as flystrike or fly strike, is the parasitic infestation of the body of a live animal by fly larvae (maggots) that grow inside the host while feeding on its tissue. Although flies are most commonly attracted to open wounds and urine- or feces-soaked fur, some species (including the most common m... | Biology and health sciences | Helminthic diseases and infestations | Health |
932217 | https://en.wikipedia.org/wiki/Classical%20unified%20field%20theories | Classical unified field theories | Since the 19th century, some physicists, notably Albert Einstein, have attempted to develop a single theoretical framework that can account for all the fundamental forces of nature – a unified field theory. Classical unified field theories are attempts to create a unified field theory based on classical physics. In par... | Physical sciences | Particle physics: General | Physics |
933173 | https://en.wikipedia.org/wiki/Archelon | Archelon | Archelon is an extinct marine turtle from the Late Cretaceous, and is the largest turtle ever to have been documented, with the biggest specimen measuring from head to tail and in body mass. It is known only from the Pierre Shale and has one species, A. ischyros. In the past, the genus also contained A. marshii and A... | Biology and health sciences | Prehistoric turtles | Animals |
934317 | https://en.wikipedia.org/wiki/Steppe%20bison | Steppe bison | The steppe bison or steppe wisent (Bison priscus) is an extinct species of bison. It was widely distributed across the mammoth steppe, ranging from Western Europe to eastern Beringia in North America during the Late Pleistocene. It is ancestral to all North American bison, including ultimately modern American bison. Th... | Biology and health sciences | Bovidae | Animals |
21491359 | https://en.wikipedia.org/wiki/Quaoar | Quaoar | Quaoar (minor-planet designation: 50000 Quaoar) is a large, ringed dwarf planet in the Kuiper belt, a region of icy planetesimals beyond Neptune. It has an elongated ellipsoidal shape with an average diameter of , about half the size of the dwarf planet Pluto. The object was discovered by American astronomers Chad Truj... | Physical sciences | Solar System | Astronomy |
21491745 | https://en.wikipedia.org/wiki/Argentine%20ant | Argentine ant | The Argentine ant (Linepithema humile, formerly Iridomyrmex humilis) is an ant native to northern Argentina, Uruguay, Paraguay, Bolivia and southern Brazil. This invasive species was inadvertently introduced by humans on a global scale and has become established in many Mediterranean climate areas, including South Afri... | Biology and health sciences | Hymenoptera | Animals |
21492663 | https://en.wikipedia.org/wiki/Asbestos | Asbestos | Asbestos ( ) is a group of naturally occurring, toxic, carcinogenic and fibrous silicate minerals. There are six types, all of which are composed of long and thin fibrous crystals, each fibre (particulate with length substantially greater than width) being composed of many microscopic "fibrils" that can be released int... | Physical sciences | Mineralogy | null |
21492980 | https://en.wikipedia.org/wiki/IMac | IMac | The iMac is a series of all-in-one computers from Apple Inc., sold as part of the company's Mac family of computers. First introduced in 1998, it has remained a primary part of Apple's consumer desktop offerings since and evolved through seven distinct forms. The iMac natively runs the MacOS operating system.
In its o... | Technology | Specific hardware | null |
3864143 | https://en.wikipedia.org/wiki/Igneous%20differentiation | Igneous differentiation | In geology, igneous differentiation, or magmatic differentiation, is an umbrella term for the various processes by which magmas undergo bulk chemical change during the partial melting process, cooling, emplacement, or eruption. The sequence of (usually increasingly silicic) magmas produced by igneous differentiation is... | Physical sciences | Geochemistry | Earth science |
3871014 | https://en.wikipedia.org/wiki/Rainbow | Rainbow | A rainbow is an optical phenomenon caused by refraction, internal reflection and dispersion of light in water droplets resulting in a continuous spectrum of light appearing in the sky. The rainbow takes the form of a multicoloured circular arc. Rainbows caused by sunlight always appear in the section of sky directly op... | Physical sciences | Atmospheric optics | null |
2072335 | https://en.wikipedia.org/wiki/Lambeosaurus | Lambeosaurus | Lambeosaurus ( , meaning "Lambe's lizard") is a genus of hadrosaurid dinosaur that lived about 75 million years ago, in the Late Cretaceous period (Campanian stage) of North America. This bipedal/quadrupedal, herbivorous dinosaur is known for its distinctive hollow cranial crest, which in the best-known species resembl... | Biology and health sciences | Ornitischians | Animals |
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