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50469 | https://en.wikipedia.org/wiki/Garlic | Garlic | Garlic (Allium sativum) is a species of bulbous flowering plants in the genus Allium. Its close relatives include the onion, shallot, leek, chives, Welsh onion, and Chinese onion. It is native to Central Asia, South Asia, and northeastern Iran. It has long been used as a seasoning and culinary ingredient worldwide, wit... | Biology and health sciences | Monocots | null |
50482 | https://en.wikipedia.org/wiki/Flood | Flood | A flood is an overflow of water (or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are of significant concern in agriculture, civil engineering and public health. Human changes to the environment often increas... | Physical sciences | Earth science | null |
50484 | https://en.wikipedia.org/wiki/Goose | Goose | A goose (: geese) is a bird of any of several waterfowl species in the family Anatidae. This group comprises the genera Anser (grey geese and white geese) and Branta (black geese). Some members of the Tadorninae subfamily (e.g., Egyptian goose, Orinoco goose) are commonly called geese, but are not considered "true gees... | Biology and health sciences | Anseriformes | null |
50505 | https://en.wikipedia.org/wiki/Mule | Mule | The mule is a domestic equine hybrid between a donkey and a horse. It is the offspring of a male donkey (a jack) and a female horse (a mare). The horse and the donkey are different species, with different numbers of chromosomes; of the two possible first-generation hybrids between them, the mule is easier to obtain and... | Biology and health sciences | Hybrids | null |
50510 | https://en.wikipedia.org/wiki/Kilometre | Kilometre | The kilometre (SI symbol: km; or ), spelt kilometer in American and Philippine English, is a unit of length in the International System of Units (SI), equal to one thousand metres (kilo- being the SI prefix for ). It is the preferred measurement unit to express distances between geographical places on land in most of ... | Physical sciences | Metric | Basics and measurement |
50513 | https://en.wikipedia.org/wiki/Melanin | Melanin | Melanin (; ) is a family of biomolecules organized as oligomers or polymers, which among other functions provide the pigments of many organisms. Melanin pigments are produced in a specialized group of cells known as melanocytes.
There are five basic types of melanin: eumelanin, pheomelanin, neuromelanin, allomelanin a... | Biology and health sciences | Biochemistry and molecular biology | null |
50530 | https://en.wikipedia.org/wiki/Mole%20%28animal%29 | Mole (animal) | Moles are small, subterranean mammals. They have cylindrical bodies, velvety fur, very small, inconspicuous eyes and ears, reduced hindlimbs, and short, powerful forelimbs with large paws adapted for digging.
The word "mole" most commonly refers to many species in the family Talpidae (which are named after the Latin w... | Biology and health sciences | Soricomorpha | null |
50557 | https://en.wikipedia.org/wiki/Phytoplankton | Phytoplankton | Phytoplankton () are the autotrophic (self-feeding) components of the plankton community and a key part of ocean and freshwater ecosystems. The name comes from the Greek words (), meaning 'plant', and (), meaning 'wanderer' or 'drifter'.
Phytoplankton obtain their energy through photosynthesis, as trees and other pl... | Biology and health sciences | Other organisms: General | Plants |
50558 | https://en.wikipedia.org/wiki/Zooplankton | Zooplankton | Zooplankton are the heterotrophic component of the planktonic community (the "zoo-" prefix comes from ), having to consume other organisms to thrive. Plankton are aquatic organisms that are unable to swim effectively against currents. Consequently, they drift or are carried along by currents in the ocean, or by current... | Biology and health sciences | Other organisms: General | Plants |
50563 | https://en.wikipedia.org/wiki/Sucrose | Sucrose | Sucrose, a disaccharide, is a sugar composed of glucose and fructose subunits. It is produced naturally in plants and is the main constituent of white sugar. It has the molecular formula .
For human consumption, sucrose is extracted and refined from either sugarcane or sugar beet. Sugar mills – typically located in tr... | Biology and health sciences | Carbohydrates | Biology |
50571 | https://en.wikipedia.org/wiki/Transportation%20engineering | Transportation engineering | Transportation engineering or transport engineering is the application of technology and scientific principles to the planning, functional design, operation and management of facilities for any mode of transportation to provide for the safe, efficient, rapid, comfortable, convenient, economical, and environmentally com... | Technology | Disciplines | null |
50582 | https://en.wikipedia.org/wiki/Zircon | Zircon | Zircon () is a mineral belonging to the group of nesosilicates and is a source of the metal zirconium. Its chemical name is zirconium(IV) silicate, and its corresponding chemical formula is ZrSiO4. An empirical formula showing some of the range of substitution in zircon is (Zr1–y, REEy)(SiO4)1–x(OH)4x–y. Zircon precipi... | Physical sciences | Silicate minerals | Earth science |
50595 | https://en.wikipedia.org/wiki/Flash%20memory | Flash memory | Flash memory is an electronic non-volatile computer memory storage medium that can be electrically erased and reprogrammed. The two main types of flash memory, NOR flash and NAND flash, are named for the NOR and NAND logic gates. Both use the same cell design, consisting of floating-gate MOSFETs. They differ at the cir... | Technology | Non-volatile memory | null |
50601 | https://en.wikipedia.org/wiki/Cystic%20fibrosis | Cystic fibrosis | Cystic fibrosis (CF) is a genetic disorder inherited in an autosomal recessive manner that impairs the normal clearance of mucus from the lungs, which facilitates the colonization and infection of the lungs by bacteria, notably Staphylococcus aureus. CF is a rare genetic disorder that affects mostly the lungs, but also... | Biology and health sciences | Specific diseases | Health |
50603 | https://en.wikipedia.org/wiki/Multiple%20sclerosis | Multiple sclerosis | Multiple sclerosis (MS) is an autoimmune disease resulting in damage to the insulating covers of nerve cells in the brain and spinal cord. As a demyelinating disease, MS disrupts the nervous system's ability to transmit signals, resulting in a range of signs and symptoms, including physical, mental, and sometimes psych... | Biology and health sciences | Non-infectious disease | null |
50605 | https://en.wikipedia.org/wiki/Cerebral%20palsy | Cerebral palsy | Cerebral palsy (CP) is a group of movement disorders that appear in early childhood. Signs and symptoms vary among people and over time, but include poor coordination, stiff muscles, weak muscles, and tremors. There may be problems with sensation, vision, hearing, and speech. Often, babies with cerebral palsy do not ro... | Biology and health sciences | Disability | null |
50620 | https://en.wikipedia.org/wiki/Scyphozoa | Scyphozoa | The Scyphozoa are an exclusively marine class of the phylum Cnidaria, referred to as the true jellyfish (or "true jellies").
The class name Scyphozoa comes from the Greek word skyphos (), denoting a kind of drinking cup and alluding to the cup shape of the organism.
Scyphozoans have existed from the earliest Cambrian... | Biology and health sciences | Cnidarians | Animals |
50627 | https://en.wikipedia.org/wiki/Conformal%20map | Conformal map | In mathematics, a conformal map is a function that locally preserves angles, but not necessarily lengths.
More formally, let and be open subsets of . A function is called conformal (or angle-preserving) at a point if it preserves angles between directed curves through , as well as preserving orientation. Conformal... | Mathematics | Complex analysis | null |
50637 | https://en.wikipedia.org/wiki/Sequoiadendron%20giganteum | Sequoiadendron giganteum | Sequoiadendron giganteum (also known as the giant sequoia, giant redwood, Sierra redwood or Wellingtonia) is a species of coniferous tree, classified in the family Cupressaceae in the subfamily Sequoioideae. Giant sequoia specimens are the most massive trees on Earth. They are native to the groves on the western slopes... | Biology and health sciences | Cupressaceae | Plants |
50640 | https://en.wikipedia.org/wiki/Texas%20Longhorn | Texas Longhorn | The Texas Longhorn is an American breed of beef cattle, characterized by its long horns, which can span more than from tip to tip. It derives from cattle brought from the Iberian Peninsula to the Americas by Spanish conquistadors from the time of the Second Voyage of Christopher Columbus until about 1512. For hundreds... | Biology and health sciences | Cattle | Animals |
50650 | https://en.wikipedia.org/wiki/Astronomy | Astronomy | Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, meteoroids, asteroids, and comets. Rel... | Physical sciences | Science and medicine | null |
50652 | https://en.wikipedia.org/wiki/Uniform%20convergence | Uniform convergence | In the mathematical field of analysis, uniform convergence is a mode of convergence of functions stronger than pointwise convergence. A sequence of functions converges uniformly to a limiting function on a set as the function domain if, given any arbitrarily small positive number , a number can be found such that e... | Mathematics | Mathematical analysis | null |
50680 | https://en.wikipedia.org/wiki/Funicular | Funicular | A funicular ( ) is a type of cable railway system that connects points along a railway track laid on a steep slope. The system is characterized by two counterbalanced carriages (also called cars or trains) permanently attached to opposite ends of a haulage cable, which is looped over a pulley at the upper end of the tr... | Technology | Rail and cable transport | null |
50691 | https://en.wikipedia.org/wiki/Douglas%20fir | Douglas fir | The Douglas fir (Pseudotsuga menziesii) is an evergreen conifer species in the pine family, Pinaceae. It is native to western North America and is also known as Douglas-fir, Douglas spruce, Oregon pine, and Columbian pine. There are three varieties: coast Douglas-fir (P. menziesii var. menziesii), Rocky Mountain Dougla... | Biology and health sciences | Gymnosperms | null |
50702 | https://en.wikipedia.org/wiki/Environmental%20engineering | Environmental engineering | Environmental engineering is a professional engineering discipline related to environmental science. It encompasses broad scientific topics like chemistry, biology, ecology, geology, hydraulics, hydrology, microbiology, and mathematics to create solutions that will protect and also improve the health of living organism... | Technology | Disciplines | null |
50705 | https://en.wikipedia.org/wiki/Construction%20engineering | Construction engineering | Construction engineering, also known as construction operations, is a professional subdiscipline of civil engineering that deals with the designing, planning, construction, and operations management of infrastructure such as roadways, tunnels, bridges, airports, railroads, facilities, buildings, dams, utilities and oth... | Technology | Disciplines | null |
50719 | https://en.wikipedia.org/wiki/Quantum%20harmonic%20oscillator | Quantum harmonic oscillator | The quantum harmonic oscillator is the quantum-mechanical analog of the classical harmonic oscillator. Because an arbitrary smooth potential can usually be approximated as a harmonic potential at the vicinity of a stable equilibrium point, it is one of the most important model systems in quantum mechanics. Furthermore... | Physical sciences | Quantum mechanics | Physics |
50748 | https://en.wikipedia.org/wiki/Paris%20M%C3%A9tro | Paris Métro | The Paris Métro (, ), short for Métropolitain (), is a rapid transit system serving the Paris metropolitan area in France. A symbol of the city, it is known for its density within the capital's territorial limits, uniform architecture and historical entrances influenced by Art Nouveau. The system is long, mostly under... | Technology | France | null |
50771 | https://en.wikipedia.org/wiki/Ferry | Ferry | A ferry is a boat that transports passengers, and occasionally vehicles and cargo, across a body of water. A small passenger ferry with multiple stops, like those in Venice, Italy, is sometimes referred to as a water taxi or water bus.
Ferries form a part of the public transport systems of many waterside cities and is... | Technology | Maritime transport | null |
50798 | https://en.wikipedia.org/wiki/Insomnia | Insomnia | Insomnia, also known as sleeplessness, is a sleep disorder where people have trouble sleeping. They may have difficulty falling asleep, or staying asleep for as long as desired. Insomnia is typically followed by daytime sleepiness, low energy, irritability, and a depressed mood. It may result in an increased risk of ac... | Biology and health sciences | Mental disorders | Health |
50838 | https://en.wikipedia.org/wiki/Manta%20ray | Manta ray | Manta rays are large rays belonging to the genus Mobula (formerly its own genus Manta). The larger species, M. birostris, reaches in width, while the smaller, M. alfredi, reaches . Both have triangular pectoral fins, horn-shaped cephalic fins and large, forward-facing mouths. They are classified among the Myliobatifor... | Biology and health sciences | Batoidea | null |
50873 | https://en.wikipedia.org/wiki/Feather | Feather | Feathers are epidermal growths that form a distinctive outer covering, or plumage, on both avian (bird) and some non-avian dinosaurs and other archosaurs. They are the most complex integumentary structures found in vertebrates and an example of a complex evolutionary novelty. They are among the characteristics that dis... | Biology and health sciences | Integumentary system | null |
50884 | https://en.wikipedia.org/wiki/Chelicerata | Chelicerata | The subphylum Chelicerata (from Neo-Latin, , ) constitutes one of the major subdivisions of the phylum Arthropoda. Chelicerates include the sea spiders, horseshoe crabs, and arachnids (including harvestmen, scorpions, spiders, solifuges, ticks, and mites, among many others), as well as a number of extinct lineages, suc... | Biology and health sciences | Chelicerata | null |
50896 | https://en.wikipedia.org/wiki/Space%20station | Space station | A space station (or orbital station) is a spacecraft which remains in orbit and hosts humans for extended periods of time. It therefore is an artificial satellite featuring habitation facilities. The purpose of maintaining a space station varies depending on the program. Most often space stations have been research sta... | Technology | Space | null |
50903 | https://en.wikipedia.org/wiki/Wavelet | Wavelet | A wavelet is a wave-like oscillation with an amplitude that begins at zero, increases or decreases, and then returns to zero one or more times. Wavelets are termed a "brief oscillation". A taxonomy of wavelets has been established, based on the number and direction of its pulses. Wavelets are imbued with specific prope... | Mathematics | Harmonic analysis | null |
50943 | https://en.wikipedia.org/wiki/Light%20rail | Light rail | Light rail (or light rail transit, abbreviated to LRT) is a form of passenger urban rail transit that uses rolling stock derived from tram technology while also having some features from heavy rapid transit.
The term was coined in 1972 in the United States as an English equivalent for the German word Stadtbahn, meanin... | Technology | Rail and cable transport | null |
50952 | https://en.wikipedia.org/wiki/Swan | Swan | Swans are birds of the genus Cygnus within the family Anatidae. The swans' closest relatives include the geese and ducks. Swans are grouped with the closely related geese in the subfamily Anserinae where they form the tribe Cygnini. Sometimes, they are considered a distinct subfamily, Cygninae.
There are six living an... | Biology and health sciences | Anseriformes | null |
50958 | https://en.wikipedia.org/wiki/Sulfur%20dioxide | Sulfur dioxide | Sulfur dioxide (IUPAC-recommended spelling) or sulphur dioxide (traditional Commonwealth English) is the chemical compound with the formula . It is a colorless gas with a pungent smell that is responsible for the odor of burnt matches. It is released naturally by volcanic activity and is produced as a by-product of cop... | Physical sciences | Covalent oxides | Chemistry |
50982 | https://en.wikipedia.org/wiki/CT%20scan | CT scan | A computed tomography scan (CT scan), formerly called computed axial tomography scan (CAT scan), is a medical imaging technique used to obtain detailed internal images of the body. The personnel that perform CT scans are called radiographers or radiology technologists.
CT scanners use a rotating X-ray tube and a row ... | Technology | Imaging | null |
51025 | https://en.wikipedia.org/wiki/Electroplating | Electroplating | Electroplating, also known as electrochemical deposition or electrodeposition, is a process for producing a metal coating on a solid substrate through the reduction of cations of that metal by means of a direct electric current. The part to be coated acts as the cathode (negative electrode) of an electrolytic cell; the... | Technology | Metallurgy | null |
51042 | https://en.wikipedia.org/wiki/Paleoclimatology | Paleoclimatology | Paleoclimatology (British spelling, palaeoclimatology) is the scientific study of climates predating the invention of meteorological instruments, when no direct measurement data were available. As instrumental records only span a tiny part of Earth's history, the reconstruction of ancient climate is important to unders... | Physical sciences | Paleoclimate | Earth science |
51054 | https://en.wikipedia.org/wiki/American%20black%20bear | American black bear | The American black bear (Ursus americanus), or simply black bear, is a species of medium-sized bear endemic to North America. It is the continent's smallest and most widely distributed bear species. It is an omnivore, with a diet varying greatly depending on season and location. It typically lives in largely forested a... | Biology and health sciences | Bears | Animals |
51079 | https://en.wikipedia.org/wiki/Magnet | Magnet | A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, steel, nickel, cobalt, etc. and attracts or repels other magnets.
A permanent magnet is an o... | Physical sciences | Basics_9 | null |
51108 | https://en.wikipedia.org/wiki/Poison | Poison | A poison is any chemical substance that is harmful or lethal to living organisms. The term is used in a wide range of scientific fields and industries, where it is often specifically defined. It may also be applied colloquially or figuratively, with a broad sense.
Whether something is considered a poison or not may d... | Biology and health sciences | Miscellaneous | null |
51111 | https://en.wikipedia.org/wiki/Pipeline | Pipeline | A pipeline is a system of pipes for long-distance transportation of a liquid or gas, typically to a market area for consumption. The latest data from 2014 gives a total of slightly less than of pipeline in 120 countries around the world. The United States had 65%, Russia had 8%, and Canada had 3%, thus 76% of all pipe... | Technology | Other | null |
51124 | https://en.wikipedia.org/wiki/Pangolin | Pangolin | Pangolins, sometimes known as scaly anteaters, are mammals of the order Pholidota (). The one extant family, the Manidae, has three genera: Manis, Phataginus, and Smutsia. Manis comprises four species found in Asia, while Phataginus and Smutsia include two species each, all found in sub-Saharan Africa. These species ra... | Biology and health sciences | Mammals | null |
51138 | https://en.wikipedia.org/wiki/Mail | Mail | The mail or post is a system for physically transporting postcards, letters, and parcels. A postal service can be private or public, though many governments place restrictions on private systems. Since the mid-19th century, national postal systems have generally been established as a government monopoly, with a fee on ... | Technology | Media and communication | null |
51143 | https://en.wikipedia.org/wiki/Giant-impact%20hypothesis | Giant-impact hypothesis | The giant-impact hypothesis, sometimes called the Theia Impact, is an astrogeology hypothesis for the formation of the Moon first proposed in 1946 by Canadian geologist Reginald Daly. The hypothesis suggests that the Early Earth collided with a Mars-sized protoplanet of the same orbit approximately 4.5 billion years ag... | Physical sciences | Solar System | Astronomy |
51215 | https://en.wikipedia.org/wiki/Airliner | Airliner | An airliner is a type of airplane for transporting passengers and air cargo. Such aircraft are most often operated by airlines. The modern and most common variant of the airliner is a long, tube shaped, and jet powered aircraft. The largest of them are wide-body jets which are also called twin-aisle because they gen... | Technology | Types of aircraft | null |
51257 | https://en.wikipedia.org/wiki/Peach | Peach | The peach (Prunus persica) is a deciduous tree first domesticated and cultivated in China. It bears edible juicy fruits with various characteristics, most called peaches and the glossy-skinned, non-fuzzy varieties called nectarines. Peaches and nectarines are the same species, though they are regarded commercially as d... | Biology and health sciences | Rosales | null |
51258 | https://en.wikipedia.org/wiki/Onion | Onion | An onion (Allium cepa L., from Latin cepa meaning "onion"), also known as the bulb onion or common onion, is a vegetable that is the most widely cultivated species of the genus Allium. The shallot is a botanical variety of the onion which was classified as a separate species until 2011. The onion's close relatives incl... | Biology and health sciences | Monocots | null |
51260 | https://en.wikipedia.org/wiki/Bulb | Bulb | In botany, a bulb is a short underground stem with fleshy leaves or leaf bases that function as food storage organs during dormancy. In gardening, plants with other kinds of storage organ are also called ornamental bulbous plants or just bulbs.
Description
The bulb's leaf bases, also known as scales, generally do not... | Biology and health sciences | Plant anatomy and morphology: General | Biology |
51303 | https://en.wikipedia.org/wiki/Cowpox | Cowpox | Cowpox is an infectious disease caused by the cowpox virus (CPXV). It presents with large blisters in the skin, a fever and swollen glands, historically typically following contact with an infected cow, though in the last several decades more often (though overall rarely) from infected cats. The hands and face are most... | Biology and health sciences | Viral diseases | Health |
51346 | https://en.wikipedia.org/wiki/Coconut | Coconut | The coconut tree (Cocos nucifera) is a member of the palm tree family (Arecaceae) and the only living species of the genus Cocos. The term "coconut" (or the archaic "cocoanut") can refer to the whole coconut palm, the seed, or the fruit, which botanically is a drupe, not a nut. They are ubiquitous in coastal tropical ... | Biology and health sciences | Monocots | null |
51399 | https://en.wikipedia.org/wiki/Buckingham%20%CF%80%20theorem | Buckingham π theorem | In engineering, applied mathematics, and physics, the Buckingham theorem is a key theorem in dimensional analysis. It is a formalisation of Rayleigh's method of dimensional analysis. Loosely, the theorem states that if there is a physically meaningful equation involving a certain number n physical variables, then the... | Physical sciences | Basics | Basics and measurement |
51414 | https://en.wikipedia.org/wiki/Fundamental%20theorem%20of%20algebra | Fundamental theorem of algebra | The fundamental theorem of algebra, also called d'Alembert's theorem or the d'Alembert–Gauss theorem, states that every non-constant single-variable polynomial with complex coefficients has at least one complex root. This includes polynomials with real coefficients, since every real number is a complex number with its ... | Mathematics | Algebra | null |
51420 | https://en.wikipedia.org/wiki/Carbonic%20acid | Carbonic acid | Carbonic acid is a chemical compound with the chemical formula . The molecule rapidly converts to water and carbon dioxide in the presence of water. However, in the absence of water, it is quite stable at room temperature. The interconversion of carbon dioxide and carbonic acid is related to the breathing cycle of anim... | Physical sciences | Specific acids | Chemistry |
51423 | https://en.wikipedia.org/wiki/P-adic%20number | P-adic number | In number theory, given a prime number , the -adic numbers form an extension of the rational numbers which is distinct from the real numbers, though with some similar properties; -adic numbers can be written in a form similar to (possibly infinite) decimals, but with digits based on a prime number rather than ten, and... | Mathematics | Prime numbers | null |
51426 | https://en.wikipedia.org/wiki/Cantor%27s%20diagonal%20argument | Cantor's diagonal argument | Cantor's diagonal argument (among various similar names) is a mathematical proof that there are infinite sets which cannot be put into one-to-one correspondence with the infinite set of natural numbersinformally, that there are sets which in some sense contain more elements than there are positive integers. Such sets ... | Mathematics | Set theory | null |
51440 | https://en.wikipedia.org/wiki/Quaternion | Quaternion | In mathematics, the quaternion number system extends the complex numbers. Quaternions were first described by the Irish mathematician William Rowan Hamilton in 1843 and applied to mechanics in three-dimensional space. The algebra of quaternions is often denoted by (for Hamilton), or in blackboard bold by Quaternions ... | Mathematics | Linear algebra | null |
51442 | https://en.wikipedia.org/wiki/Zorn%27s%20lemma | Zorn's lemma | Zorn's lemma, also known as the Kuratowski–Zorn lemma, is a proposition of set theory. It states that a partially ordered set containing upper bounds for every chain (that is, every totally ordered subset) necessarily contains at least one maximal element.
The lemma was proved (assuming the axiom of choice) by Kazimie... | Mathematics | Axiomatic systems | null |
51462 | https://en.wikipedia.org/wiki/Machine | Machine | A machine is a physical system that uses power to apply forces and control movement to perform an action. The term is commonly applied to artificial devices, such as those employing engines or motors, but also to natural biological macromolecules, such as molecular machines. Machines can be driven by animals and people... | Technology | Basics_8 | null |
51469 | https://en.wikipedia.org/wiki/Mold | Mold | A mold () or mould () is one of the structures that certain fungi can form. The dust-like, colored appearance of molds is due to the formation of spores containing fungal secondary metabolites. The spores are the dispersal units of the fungi. Not all fungi form molds. Some fungi form mushrooms; others grow as single ce... | Biology and health sciences | Basics | Plants |
51470 | https://en.wikipedia.org/wiki/Mycelium | Mycelium | Mycelium (: mycelia) is a root-like structure of a fungus consisting of a mass of branching, thread-like hyphae. Its normal form is that of branched, slender, entangled, anastomosing, hyaline threads. Fungal colonies composed of mycelium are found in and on soil and many other substrates. A typical single spore germina... | Biology and health sciences | Fungus | null |
51472 | https://en.wikipedia.org/wiki/Spore | Spore | In biology, a spore is a unit of sexual (in fungi) or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores form part of the life cycles of many plants, algae, fungi and protozoa. They were thought to have appeared as early as the... | Biology and health sciences | Biological reproduction | null |
51474 | https://en.wikipedia.org/wiki/Seat%20belt | Seat belt | A seat belt, also known as a safety belt or spelled seatbelt, is a vehicle safety device designed to secure the driver or a passenger of a vehicle against harmful movement that may result during a collision or a sudden stop. A seat belt reduces the likelihood of death or serious injury in a traffic collision by reducin... | Technology | Basics_7 | null |
51480 | https://en.wikipedia.org/wiki/Hypha | Hypha | A hypha (; : hyphae) is a long, branching, filamentous structure of a fungus, oomycete, or actinobacterium. In most fungi, hyphae are the main mode of vegetative growth, and are collectively called a mycelium.
Structure
A hypha consists of one or more cells surrounded by a tubular cell wall. In most fungi, hyphae are... | Biology and health sciences | Fungus | null |
51483 | https://en.wikipedia.org/wiki/Mutualism%20%28biology%29 | Mutualism (biology) | Mutualism describes the ecological interaction between two or more species where each species has a net benefit. Mutualism is a common type of ecological interaction. Prominent examples are:
the nutrient exchange between vascular plants and mycorrhizal fungi,
the fertilization of flowering plants by pollinators,
the... | Biology and health sciences | Ecology | Biology |
51510 | https://en.wikipedia.org/wiki/Silk | Silk | Silk is a natural protein fiber, some forms of which can be woven into textiles. The protein fiber of silk is composed mainly of fibroin and is most commonly produced by certain insect larvae to form cocoons. The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in c... | Technology | Fabrics and fibers | null |
51513 | https://en.wikipedia.org/wiki/Arrow | Arrow | An arrow is a fin-stabilized projectile launched by a bow. A typical arrow usually consists of a long, stiff, straight shaft with a weighty (and usually sharp and pointed) arrowhead attached to the front end, multiple fin-like stabilizers called fletchings mounted near the rear, and a slot at the rear end called a nock... | Technology | Archery | null |
51518 | https://en.wikipedia.org/wiki/Dam | Dam | A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams t... | Technology | Structures | null |
51628 | https://en.wikipedia.org/wiki/Sweet%20potato | Sweet potato | The sweet potato or sweetpotato (Ipomoea batatas) is a dicotyledonous plant that belongs to the bindweed or morning glory family, Convolvulaceae. Its large, starchy, sweet-tasting tuberous roots are used as a root vegetable. The young shoots and leaves are sometimes eaten as greens. Cultivars of the sweet potato have b... | Biology and health sciences | Solanales | null |
51632 | https://en.wikipedia.org/wiki/Puffball | Puffball | Puffballs are a type of fungus featuring a ball-shaped fruit body that (when mature) bursts on contact or impact, releasing a cloud of dust-like spores into the surrounding area. Puffballs belong to the division Basidiomycota and encompass several genera, including Calvatia, Calbovista and Lycoperdon. The puffballs wer... | Biology and health sciences | Basics | Plants |
51698 | https://en.wikipedia.org/wiki/Extended%20real%20number%20line | Extended real number line | In mathematics, the extended real number system is obtained from the real number system by adding two elements denoted and that are respectively greater and lower than every real number. This allows for treating the potential infinities of infinitely increasing sequences and infinitely decreasing series as actual in... | Mathematics | Real analysis | null |
51706 | https://en.wikipedia.org/wiki/Very%20long%20instruction%20word | Very long instruction word | Very long instruction word (VLIW) refers to instruction set architectures that are designed to exploit instruction-level parallelism (ILP). A VLIW processor allows programs to explicitly specify instructions to execute in parallel, whereas conventional central processing units (CPUs) mostly allow programs to specify in... | Technology | Computer architecture concepts | null |
51714 | https://en.wikipedia.org/wiki/Taylor%27s%20theorem | Taylor's theorem | In calculus, Taylor's theorem gives an approximation of a -times differentiable function around a given point by a polynomial of degree , called the -th-order Taylor polynomial. For a smooth function, the Taylor polynomial is the truncation at the order of the Taylor series of the function. The first-order Taylor poly... | Mathematics | Differential calculus | null |
51727 | https://en.wikipedia.org/wiki/Moped | Moped | A moped () is a type of small motorcycle, generally having a less stringent licensing requirement than full motorcycles or automobiles. Historically, the term exclusively meant a similar vehicle with both bicycle pedals and a motorcycle engine. Mopeds typically travel only slightly faster than bicycles on public roads.... | Technology | Motorized road transport | null |
51734 | https://en.wikipedia.org/wiki/Conveyor%20belt | Conveyor belt | A conveyor belt is the carrying medium of a belt conveyor system (often shortened to belt conveyor). A belt conveyor system is one of many types of conveyor systems. A belt conveyor system consists of two or more pulleys (sometimes referred to as drums), with a closed loop of carrying medium—the conveyor belt—that rota... | Technology | Industry: General | null |
51736 | https://en.wikipedia.org/wiki/Blimp | Blimp | A non-rigid airship, commonly called a blimp (/blɪmp/), is an airship (dirigible) without an internal structural framework or a keel. Unlike semi-rigid and rigid airships (e.g. Zeppelins), blimps rely on the pressure of their lifting gas (usually helium, rather than flammable hydrogen) and the strength of the envelope ... | Technology | Types of aircraft | null |
51742 | https://en.wikipedia.org/wiki/Drawing%20board | Drawing board | A drawing board (also drawing table, drafting table or architect's table) is, in its antique form, a kind of multipurpose desk which can be used for any kind of drawing, writing or impromptu sketching on a large sheet of paper or for reading a large format book or other oversized document or for drafting precise techni... | Technology | Artist's and drafting tools | null |
51776 | https://en.wikipedia.org/wiki/Hydrostatic%20equilibrium | Hydrostatic equilibrium | In fluid mechanics, hydrostatic equilibrium (hydrostatic balance, hydrostasy) is the condition of a fluid or plastic solid at rest, which occurs when external forces, such as gravity, are balanced by a pressure-gradient force. In the planetary physics of Earth, the pressure-gradient force prevents gravity from collapsi... | Physical sciences | Fluid mechanics | Physics |
51829 | https://en.wikipedia.org/wiki/Rodinia | Rodinia | Rodinia (from the Russian родина, rodina, meaning "motherland, birthplace") was a Mesoproterozoic and Neoproterozoic supercontinent that assembled 1.26–0.90 billion years ago (Ga) and broke up 750–633 million years ago (Ma). were probably the first to recognise a Precambrian supercontinent, which they named "Pangaea I... | Physical sciences | Paleogeography | Earth science |
5540732 | https://en.wikipedia.org/wiki/Microsauria | Microsauria | Microsauria ("small lizards") is an extinct, possibly polyphyletic order of tetrapods from the late Carboniferous and early Permian periods. It is the most diverse and species-rich group of lepospondyls. Recently, Microsauria has been considered paraphyletic, as several other non-microsaur lepospondyl groups such as Ly... | Biology and health sciences | Prehistoric amphibians | Animals |
5543603 | https://en.wikipedia.org/wiki/Tripedalism | Tripedalism | Tripedalism (from the Latin tri = three + ped = foot) is locomotion by the use of three limbs. Real-world tripedalism is rare, in contrast to the common bipedalism of two-legged animals and quadrupedalism of four-legged animals. Bilateral symmetry seems to have become entrenched very early in evolution, appearing even ... | Biology and health sciences | Ethology | Biology |
2196648 | https://en.wikipedia.org/wiki/Lithium%20hydride | Lithium hydride | Lithium hydride is an inorganic compound with the formula LiH. This alkali metal hydride is a colorless solid, although commercial samples are grey. Characteristic of a salt-like (ionic) hydride, it has a high melting point, and it is not soluble but reactive with all protic organic solvents. It is soluble and nonreact... | Physical sciences | Hydride salts | Chemistry |
2197089 | https://en.wikipedia.org/wiki/Lithostratigraphy | Lithostratigraphy | Lithostratigraphy is a sub-discipline of stratigraphy, the geological science associated with the study of strata or rock layers. Major focuses include geochronology, comparative geology, and petrology.
In general, strata are primarily igneous or sedimentary relating to how the rock was formed. Sedimentary layers are ... | Physical sciences | Stratigraphy | Earth science |
2198661 | https://en.wikipedia.org/wiki/Trypanosoma%20brucei | Trypanosoma brucei | Trypanosoma brucei is a species of parasitic kinetoplastid belonging to the genus Trypanosoma that is present in sub-Saharan Africa. Unlike other protozoan parasites that normally infect blood and tissue cells, it is exclusively extracellular and inhabits the blood plasma and body fluids. It causes deadly vector-borne ... | Biology and health sciences | Excavata | Plants |
2198678 | https://en.wikipedia.org/wiki/Wet%20wipe | Wet wipe | A wet wipe, also known as a wet towel, wet one, moist towelette, disposable wipe, disinfecting wipe, or a baby wipe (in specific circumstances) is a small to medium-sized moistened piece of plastic or cloth that either comes folded and individually wrapped for convenience or, in the case of dispensers, as a large roll ... | Biology and health sciences | Hygiene products | Health |
2198997 | https://en.wikipedia.org/wiki/Acacia%20pycnantha | Acacia pycnantha | Acacia pycnantha, most commonly known as the golden wattle, is a tree of the family Fabaceae. It grows to a height of and has phyllodes (flattened leaf stalks) instead of true leaves. The profuse fragrant, golden flowers appear in late winter and spring, followed by long seed pods. Explorer Thomas Mitchell collected t... | Biology and health sciences | Fabales | Plants |
2199066 | https://en.wikipedia.org/wiki/Paraceratherium | Paraceratherium | Paraceratherium is an extinct genus of hornless rhinocerotoids belonging to the family Paraceratheriidae. It is one of the largest terrestrial mammals that has ever existed and lived from the early to late Oligocene epoch (34–23 million years ago). The first fossils were discovered in what is now Pakistan, and remains ... | Biology and health sciences | Perissodactyla | Animals |
2200368 | https://en.wikipedia.org/wiki/Geology%20of%20Venus | Geology of Venus | The geology of Venus is the scientific study of the surface, crust, and interior of the planet Venus. Within the Solar System, it is the one nearest to Earth and most like it in terms of mass, but has no magnetic field or recognizable plate tectonic system. Much of the ground surface is exposed volcanic bedrock, some ... | Physical sciences | Solar System | Astronomy |
2201190 | https://en.wikipedia.org/wiki/Billfish | Billfish | The billfish are a group (Xiphioidea) of saltwater predatory fish characterised by prominent pointed bills (rostra), and by their large size; some are longer than . Extant billfish include sailfish and marlin, which make up the family Istiophoridae; and swordfish, sole member of the family Xiphiidae. They are often ape... | Biology and health sciences | Acanthomorpha | Animals |
331731 | https://en.wikipedia.org/wiki/Plaster | Plaster | Plaster is a building material used for the protective or decorative coating of walls and ceilings and for moulding and casting decorative elements. In English, "plaster" usually means a material used for the interiors of buildings, while "render" commonly refers to external applications. The term stucco refers to pla... | Technology | Building materials | null |
331755 | https://en.wikipedia.org/wiki/Transitional%20fossil | Transitional fossil | A transitional fossil is any fossilized remains of a life form that exhibits traits common to both an ancestral group and its derived descendant group. This is especially important where the descendant group is sharply differentiated by gross anatomy and mode of living from the ancestral group. These fossils serve as a... | Biology and health sciences | Paleontology | Biology |
331784 | https://en.wikipedia.org/wiki/Drywall | Drywall | Drywall (also called plasterboard, dry lining, wallboard, sheet rock, gib board, gypsum board, buster board, turtles board, slap board, custard board, gypsum panel and gyprock) is a panel made of calcium sulfate dihydrate (gypsum), with or without additives, typically extruded between thick sheets of facer and backer p... | Technology | Building materials | null |
331824 | https://en.wikipedia.org/wiki/Wrasse | Wrasse | The wrasses are a family, Labridae, of marine ray-finned fish, many of which are brightly colored. The family is large and diverse, with over 600 species in 81 genera, which are divided into nine subgroups or tribes.
They are typically small, most of them less than long, although the largest, the humphead wrasse, can... | Biology and health sciences | Acanthomorpha | null |
331826 | https://en.wikipedia.org/wiki/Prime-counting%20function | Prime-counting function | In mathematics, the prime-counting function is the function counting the number of prime numbers less than or equal to some real number . It is denoted by (unrelated to the number ).
A symmetric variant seen sometimes is , which is equal to if is exactly a prime number, and equal to otherwise. That is, the number... | Mathematics | Specific functions | null |
331884 | https://en.wikipedia.org/wiki/Particle%20horizon | Particle horizon | The particle horizon (also called the cosmological horizon, the comoving horizon (in Scott Dodelson's text), or the cosmic light horizon) is the maximum distance from which light from particles could have traveled to the observer in the age of the universe. Much like the concept of a terrestrial horizon, it represents ... | Physical sciences | Physical cosmology | Astronomy |
331907 | https://en.wikipedia.org/wiki/Archerfish | Archerfish | The archerfish (also known as spinner fish or archer fish) or Toxotidae are a monotypic family (although some include a second genus) of perciform tropical fish known for their unique predation technique of "shooting down" land-based insects and other small prey with jets of water spit from their specialized mouths. T... | Biology and health sciences | Acanthomorpha | Animals |
331951 | https://en.wikipedia.org/wiki/Fish%20anatomy | Fish anatomy | Fish anatomy is the study of the form or morphology of fish. It can be contrasted with fish physiology, which is the study of how the component parts of fish function together in the living fish. In practice, fish anatomy and fish physiology complement each other, the former dealing with the structure of a fish, its or... | Biology and health sciences | Basic anatomy | Biology |
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