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733929 | https://en.wikipedia.org/wiki/Chemical%20physics | Chemical physics | Chemical physics is a branch of physics that studies chemical processes from a physical point of view. It focuses on understanding the physical properties and behavior of chemical systems, using principles from both physics and chemistry. This field investigates physicochemical phenomena using techniques from atomic an... | Physical sciences | Physics basics: General | Physics |
734256 | https://en.wikipedia.org/wiki/Molecular%20modelling | Molecular modelling | Molecular modelling encompasses all methods, theoretical and computational, used to model or mimic the behaviour of molecules. The methods are used in the fields of computational chemistry, drug design, computational biology and materials science to study molecular systems ranging from small chemical systems to large b... | Physical sciences | Subdisciplines | Chemistry |
20505600 | https://en.wikipedia.org/wiki/Maternity%20den | Maternity den | In the animal kingdom, a maternity den is a lair where a mother gives birth and nurtures her young when they are in a vulnerable life stage. While dens are typically subterranean, they may also be snow caves or simply beneath rock ledges. Characteristically there is an entrance, and optionally an exit corridor, in addi... | Biology and health sciences | Ecology | Biology |
3407706 | https://en.wikipedia.org/wiki/Environmental%20policy | Environmental policy | Environmental policy is the commitment of an organization or government to the laws, regulations, and other policy mechanisms concerning environmental issues. These issues generally include air and water pollution, waste management, ecosystem management, maintenance of biodiversity, the management of natural resources,... | Physical sciences | Earth science basics: General | Earth science |
3408427 | https://en.wikipedia.org/wiki/Credible%20interval | Credible interval | In Bayesian statistics, a credible interval is an interval used to characterize a probability distribution. It is defined such that an unobserved parameter value has a particular probability to fall within it. For example, in an experiment that determines the distribution of possible values of the parameter , if the p... | Mathematics | Statistics | null |
3408660 | https://en.wikipedia.org/wiki/Microscopic%20reversibility | Microscopic reversibility | The principle of microscopic reversibility in physics and chemistry is twofold:
First, it states that the microscopic detailed dynamics of particles and fields is time-reversible because the microscopic equations of motion are symmetric with respect to inversion in time (T-symmetry);
Second, it relates to the statist... | Physical sciences | Reaction | Chemistry |
10280304 | https://en.wikipedia.org/wiki/Malaria%20vaccine | Malaria vaccine | Malaria vaccines are vaccines that prevent malaria, a mosquito-borne infectious disease which affected an estimated 249 million people globally in 85 malaria-endemic countries and areas and caused 608,000 deaths in 2022. The first approved vaccine for malaria is RTS,S, known by the brand name Mosquirix. , the vaccine h... | Biology and health sciences | Vaccines | Health |
19333613 | https://en.wikipedia.org/wiki/Sea%20anemone | Sea anemone | Sea anemones ( ) are a group of predatory marine invertebrates constituting the order Actiniaria. Because of their colourful appearance, they are named after the Anemone, a terrestrial flowering plant. Sea anemones are classified in the phylum Cnidaria, class Anthozoa, subclass Hexacorallia. As cnidarians, sea anemones... | Biology and health sciences | Cnidarians | Animals |
19336290 | https://en.wikipedia.org/wiki/Planter%20%28farm%20implement%29 | Planter (farm implement) | A planter is a farm implement, usually towed behind a tractor, that sows (plants) seeds in rows throughout a field. It is connected to the tractor with a drawbar or a three-point hitch. Planters lay the seeds down in precise manner along rows. Planters vary greatly in size, from 1 row to 54, with the biggest in the wor... | Technology | Farm and garden machinery | null |
19337310 | https://en.wikipedia.org/wiki/Rodent | Rodent | Rodents (from Latin , 'to gnaw') are mammals of the order Rodentia ( ), which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents. They are native to all major land masses except for Antarctica, and several oceanic islands,... | Biology and health sciences | Biology | null |
19344125 | https://en.wikipedia.org/wiki/Riemann%20hypothesis | Riemann hypothesis | In mathematics, the Riemann hypothesis is the conjecture that the Riemann zeta function has its zeros only at the negative even integers and complex numbers with real part . Many consider it to be the most important unsolved problem in pure mathematics. It is of great interest in number theory because it implies result... | Mathematics | Other | null |
19344418 | https://en.wikipedia.org/wiki/Bovine%20spongiform%20encephalopathy | Bovine spongiform encephalopathy | Bovine spongiform encephalopathy (BSE), commonly known as mad cow disease, is an incurable and invariably fatal neurodegenerative disease of cattle. Symptoms include abnormal behavior, trouble walking, and weight loss. Later in the course of the disease, the cow becomes unable to function normally. There is conflicting... | Biology and health sciences | Prion diseases | Health |
19346761 | https://en.wikipedia.org/wiki/Glyptodon | Glyptodon | {{Automatic taxobox
| fossil_range = Pliocene?-Pleistocene (Montehermosan?–Lujanian)~
| image = Glyptodon-1.jpg
| image_caption = Skeleton of G. clavipes at the Naturhistorisches Museum, Vienna
| taxon = Glyptodon
| authority = Owen, 1839
| type_species = Glyptodon clavipes
| type_species_authority = Owen, 1839
| subdi... | Biology and health sciences | Xenarthra | Animals |
19347033 | https://en.wikipedia.org/wiki/Breastfeeding | Breastfeeding | Breastfeeding, also known as nursing, is the process where breast milk is fed to a child. Breast milk may be from the breast, or may be pumped and fed to the infant. The World Health Organization (WHO) recommend that breastfeeding begin within the first hour of a baby's birth and continue as the baby wants. Health orga... | Biology and health sciences | Health and fitness | null |
12598694 | https://en.wikipedia.org/wiki/Callorhinchus | Callorhinchus | Callorhinchus, the plough-nosed chimaeras or elephantfish, are the only living genus in the family Callorhinchidae (sometimes spelled Callorhynchidae). A few extinct genera only known from fossil remains are recognized. Callorhinchus spp. are similar in form and habits to other chimaeras, but are distinguished by the p... | Biology and health sciences | Chimaeriformes | Animals |
12605522 | https://en.wikipedia.org/wiki/Condenser%20%28laboratory%29 | Condenser (laboratory) | In chemistry, a condenser is laboratory apparatus used to condense vaporsthat is, turn them into liquidsby cooling them down.
Condensers are routinely used in laboratory operations such as distillation, reflux, and extraction. In distillation, a mixture is heated until the more volatile components boil off, the vapors... | Physical sciences | Phase separations | Chemistry |
2488868 | https://en.wikipedia.org/wiki/Tarbela%20Dam | Tarbela Dam | Tarbela Dam (, ) is an earth-filled dam along the Indus River in Pakistan's Khyber Pakhtunkhwa province. It is mainly located in Haripur Tehsil. It is about from the city of Swabi KPK, northwest of Islamabad, and east of Peshawar. It is the largest earth-filled dam in the world. The dam is high above the riverbed a... | Technology | Dams | null |
2490859 | https://en.wikipedia.org/wiki/Flight%20management%20system | Flight management system | A flight management system (FMS) is a fundamental component of a modern airliner's avionics. An FMS is a specialized computer system that automates a wide variety of in-flight tasks, reducing the workload on the flight crew to the point that modern civilian aircraft no longer carry flight engineers or navigators. A pri... | Technology | Aircraft components | null |
432961 | https://en.wikipedia.org/wiki/Intertropical%20Convergence%20Zone | Intertropical Convergence Zone | The Intertropical Convergence Zone (ITCZ , or ICZ), known by sailors as the doldrums or the calms because of its monotonous windless weather, is the area where the northeast and the southeast trade winds converge. It encircles Earth near the thermal equator though its specific position varies seasonally. When it lies ... | Physical sciences | Winds | Earth science |
432986 | https://en.wikipedia.org/wiki/Physical%20fitness | Physical fitness | Physical fitness is a state of health and well-being and, more specifically, the ability to perform aspects of sports, occupations, and daily activities. Physical fitness is generally achieved through proper nutrition, moderate-vigorous physical exercise, and sufficient rest along with a formal recovery plan.
Before t... | Biology and health sciences | Health and fitness | null |
433085 | https://en.wikipedia.org/wiki/Atmospheric%20circulation | Atmospheric circulation | Atmospheric circulation is the large-scale movement of air and together with ocean circulation is the means by which thermal energy is redistributed on the surface of the Earth. The Earth's atmospheric circulation varies from year to year, but the large-scale structure of its circulation remains fairly constant. The sm... | Physical sciences | Atmospheric circulation | null |
433118 | https://en.wikipedia.org/wiki/Xenon%20hexafluoroplatinate | Xenon hexafluoroplatinate | Xenon hexafluoroplatinate is the product of the reaction of platinum hexafluoride with xenon, in an experiment that proved the chemical reactivity of the noble gases. This experiment was performed by Neil Bartlett at the University of British Columbia, who formulated the product as "Xe+[PtF6]−", although subsequent wor... | Physical sciences | Noble gas compounds | Chemistry |
433892 | https://en.wikipedia.org/wiki/Salvia%20officinalis | Salvia officinalis | Salvia officinalis, the common sage or sage, is a perennial, evergreen subshrub, with woody stems, grayish leaves, and blue to purplish flowers. It is a member of the mint family Lamiaceae and native to the Mediterranean region, though it has been naturalized in many places throughout the world. It has a long history o... | Biology and health sciences | Herbs and spices | Plants |
434188 | https://en.wikipedia.org/wiki/Bioremediation | Bioremediation | Bioremediation broadly refers to any process wherein a biological system (typically bacteria, microalgae, fungi in mycoremediation, and plants in phytoremediation), living or dead, is employed for removing environmental pollutants from air, water, soil, flue gasses, industrial effluents etc., in natural or artificial s... | Technology | Environmental remediation | null |
434221 | https://en.wikipedia.org/wiki/James%20Webb%20Space%20Telescope | James Webb Space Telescope | The James Webb Space Telescope (JWST) is a space telescope designed to conduct infrared astronomy. As the largest telescope in space, it is equipped with high-resolution and high-sensitivity instruments, allowing it to view objects too old, distant, or faint for the Hubble Space Telescope. This enables investigations a... | Technology | Space-based observatories | null |
435078 | https://en.wikipedia.org/wiki/Plant%20nursery | Plant nursery | A nursery is a place where plants are propagated and grown to a desired size. Mostly the plants concerned are for gardening, forestry, or conservation biology, rather than agriculture. They include retail nurseries, which sell to the general public; wholesale nurseries, which sell only to businesses such as other nurse... | Technology | Buildings and infrastructure | null |
435089 | https://en.wikipedia.org/wiki/Noble%20gas%20compound | Noble gas compound | In chemistry, noble gas compounds are chemical compounds that include an element from the noble gases, group 8 or 18 of the periodic table. Although the noble gases are generally unreactive elements, many such compounds have been observed, particularly involving the element xenon.
From the standpoint of chemistry, the... | Physical sciences | Noble gas compounds | Chemistry |
435335 | https://en.wikipedia.org/wiki/Plant%20nutrition | Plant nutrition | Plant nutrition is the study of the chemical elements and compounds necessary for plant growth and reproduction, plant metabolism and their external supply. In its absence the plant is unable to complete a normal life cycle, or that the element is part of some essential plant constituent or metabolite. This is in accor... | Biology and health sciences | Plant anatomy and morphology: General | Biology |
435341 | https://en.wikipedia.org/wiki/Pinus%20taeda | Pinus taeda | Pinus taeda, commonly known as loblolly pine, is one of several pines native to the Southeastern United States, from East Texas to Florida, and north to southern New Jersey. The wood industry classifies the species as a southern yellow pine. U.S. Forest Service surveys found that loblolly pine is the second-most common... | Biology and health sciences | Pinaceae | Plants |
435420 | https://en.wikipedia.org/wiki/Anaerobic%20respiration | Anaerobic respiration | Anaerobic respiration is respiration using electron acceptors other than molecular oxygen (O2). Although oxygen is not the final electron acceptor, the process still uses a respiratory electron transport chain.
In aerobic organisms undergoing respiration, electrons are shuttled to an electron transport chain, and the ... | Biology and health sciences | Metabolic processes | Biology |
18340510 | https://en.wikipedia.org/wiki/Recurve%20bow | Recurve bow | In archery, a recurve bow is one of the main shapes a bow can take, with limbs that curve away from the archer when unstrung. A recurve bow stores more energy and delivers energy more efficiently than the equivalent straight-limbed bow, giving a greater amount of energy and speed to the arrow. A recurve will permit a s... | Technology | Archery | null |
1188676 | https://en.wikipedia.org/wiki/Kelp%20forest | Kelp forest | Kelp forests are underwater areas with a high density of kelp, which covers a large part of the world's coastlines. Smaller areas of anchored kelp are called kelp beds. They are recognized as one of the most productive and dynamic ecosystems on Earth. Although algal kelp forest combined with coral reefs only cover 0.1%... | Physical sciences | Oceanography | Earth science |
1189275 | https://en.wikipedia.org/wiki/Seabed | Seabed | The seabed (also known as the seafloor, sea floor, ocean floor, and ocean bottom) is the bottom of the ocean. All floors of the ocean are known as 'seabeds'.
The structure of the seabed of the global ocean is governed by plate tectonics. Most of the ocean is very deep, where the seabed is known as the abyssal plain. S... | Physical sciences | Oceanography | null |
1189386 | https://en.wikipedia.org/wiki/Horseshoe%20orbit | Horseshoe orbit | In celestial mechanics, a horseshoe orbit is a type of co-orbital motion of a small orbiting body relative to a larger orbiting body. The osculating (instantaneous) orbital period of the smaller body remains very near that of the larger body, and if its orbit is a little more eccentric than that of the larger body, dur... | Physical sciences | Orbital mechanics | Astronomy |
1189582 | https://en.wikipedia.org/wiki/Shivering | Shivering | Shivering (also called shuddering) is a bodily function in response to cold and extreme fear in warm-blooded animals. When the core body temperature drops, the shivering reflex is triggered to maintain homeostasis. Skeletal muscles begin to shake in small movements, creating warmth by expending energy. Shivering can al... | Biology and health sciences | Symptoms and signs | Health |
1190123 | https://en.wikipedia.org/wiki/Adamantane | Adamantane | Adamantane is an organic compound with formula C10H16 or, more descriptively, (CH)4(CH2)6. Adamantane molecules can be described as the fusion of three cyclohexane rings. The molecule is both rigid and virtually stress-free. Adamantane is the most stable isomer of C10H16. The spatial arrangement of carbon atoms in the ... | Physical sciences | Aliphatic hydrocarbons | Chemistry |
1190754 | https://en.wikipedia.org/wiki/Silicate%20mineral | Silicate mineral | Silicate minerals are rock-forming minerals made up of silicate groups. They are the largest and most important class of minerals and make up approximately 90 percent of Earth's crust.
In mineralogy, silica (silicon dioxide, ) is usually considered a silicate mineral rather than an oxide mineral. Silica is found in na... | Physical sciences | Silicate minerals | Earth science |
1190913 | https://en.wikipedia.org/wiki/Air%20brake%20%28aeronautics%29 | Air brake (aeronautics) | In aeronautics, air brakes or speed brakes are a type of flight control surface used on an aircraft to increase the drag on the aircraft. When extended into the airstream, air brakes cause an increase in the drag on the aircraft. When not in use, they conform to the local streamlined profile of the aircraft in order to... | Technology | Aircraft components | null |
1191101 | https://en.wikipedia.org/wiki/Electric%20displacement%20field | Electric displacement field | In physics, the electric displacement field (denoted by D), also called electric flux density, is a vector field that appears in Maxwell's equations. It accounts for the electromagnetic effects of polarization and that of an electric field, combining the two in an auxiliary field. It plays a major role in the physics o... | Physical sciences | Electrostatics | Physics |
1191951 | https://en.wikipedia.org/wiki/Glycated%20hemoglobin | Glycated hemoglobin | Glycated hemoglobin, also called glycohemoglobin, is a form of hemoglobin (Hb) that is chemically linked to a sugar. Most monosaccharides, including glucose, galactose, and fructose, spontaneously (that is, non-enzymatically) bond with hemoglobin when they are present in the bloodstream. However, glucose is only 21% as... | Biology and health sciences | Proteins | Biology |
105200 | https://en.wikipedia.org/wiki/Cancer%20%28constellation%29 | Cancer (constellation) | Cancer is one of the twelve constellations of the zodiac and is located in the Northern celestial hemisphere. Its name is Latin for crab and it is commonly represented as one. Cancer is a medium-size constellation with an area of 506 square degrees and its stars are rather faint, its brightest star Beta Cancri having a... | Physical sciences | Zodiac | Astronomy |
105219 | https://en.wikipedia.org/wiki/Cancer | Cancer | Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. These contrast with benign tumors, which do not spread. Possible signs and symptoms include a lump, abnormal bleeding, prolonged cough, unexplained weight loss, and a change in bowel movements... | Biology and health sciences | Illness and injury | null |
105340 | https://en.wikipedia.org/wiki/Strange%20quark | Strange quark | The strange quark or s quark (from its symbol, s) is the third lightest of all quarks, a type of elementary particle. Strange quarks are found in subatomic particles called hadrons. Examples of hadrons containing strange quarks include kaons (), strange D mesons (), Sigma baryons (), and other strange particles.
Accor... | Physical sciences | Fermions | Physics |
105355 | https://en.wikipedia.org/wiki/Biomechanics | Biomechanics | Biomechanics is the study of the structure, function and motion of the mechanical aspects of biological systems, at any level from whole organisms to organs, cells and cell organelles, using the methods of mechanics. Biomechanics is a branch of biophysics.
Etymology
The word "biomechanics" (1899) and the related "bio... | Biology and health sciences | Basics | null |
105375 | https://en.wikipedia.org/wiki/Student%27s%20t-distribution | Student's t-distribution | In probability theory and statistics, Student's distribution (or simply the distribution) is
a continuous probability distribution that generalizes the standard normal distribution. Like the latter, it is symmetric around zero and bell-shaped.
However, has heavier tails and the amount of probability mass in the ta... | Mathematics | Probability | null |
105659 | https://en.wikipedia.org/wiki/Upwelling | Upwelling | Upwelling is an oceanographic phenomenon that involves wind-driven motion of dense, cooler, and usually nutrient-rich water from deep water towards the ocean surface. It replaces the warmer and usually nutrient-depleted surface water. The nutrient-rich upwelled water stimulates the growth and reproduction of primary pr... | Physical sciences | Oceanography | Earth science |
105709 | https://en.wikipedia.org/wiki/Aerial%20tramway | Aerial tramway | An aerial tramway, aerial tram, sky tram, aerial cablecar, aerial cableway, telepherique, or seilbahn is a type of aerial lift which uses one or two stationary cables for support, with a third moving cable providing propulsion. With this form of lift, the grip of an aerial tramway cabin is fixed onto the propulsion cab... | Technology | Rail and cable transport | null |
105803 | https://en.wikipedia.org/wiki/Remote%20control | Remote control | In electronics, a remote control (also known as a remote or clicker) is an electronic device used to operate another device from a distance, usually wirelessly. In consumer electronics, a remote control can be used to operate devices such as a television set, DVD player or other digital home media appliance. A remote c... | Technology | Basics_4 | null |
105807 | https://en.wikipedia.org/wiki/Infectious%20mononucleosis | Infectious mononucleosis | Infectious mononucleosis (IM, mono), also known as glandular fever, is an infection usually caused by the Epstein–Barr virus (EBV). Most people are infected by the virus as children, when the disease produces few or no symptoms. In young adults, the disease often results in fever, sore throat, enlarged lymph nodes in t... | Biology and health sciences | Viral diseases | Health |
105847 | https://en.wikipedia.org/wiki/Gibbon | Gibbon | Gibbons () are apes in the family Hylobatidae (). The family historically contained one genus, but now is split into four extant genera and 20 species. Gibbons live in subtropical and tropical forests from eastern Bangladesh to Northeast India to southern China and Indonesia (including the islands of Sumatra, Borneo an... | Biology and health sciences | Primates | null |
105849 | https://en.wikipedia.org/wiki/Inter-city%20rail | Inter-city rail | Inter-city rail services are express trains that run services that connect cities over longer distances than commuter or regional trains. They include rail services that are neither short-distance commuter rail trains within one city area nor slow regional rail trains stopping at all stations and covering local journey... | Technology | Rail and cable transport | null |
105908 | https://en.wikipedia.org/wiki/Ford%20Mustang | Ford Mustang | The Ford Mustang is a series of American automobiles manufactured by Ford. In continuous production since 1964, the Mustang is currently the longest-produced Ford car nameplate. Currently in its seventh generation, it is the fifth-best selling Ford car nameplate. The namesake of the "pony car" automobile segment, the M... | Technology | Specific automobiles | null |
105927 | https://en.wikipedia.org/wiki/Charles%20de%20Gaulle%20Airport | Charles de Gaulle Airport | Paris Charles de Gaulle Airport , also known as Roissy Airport, is the primary international airport serving Paris, the capital city of France. The airport opened in 1974 and is located in Roissy-en-France, northeast of Paris. It is named for World War II leader and French President Charles de Gaulle (1890–1970), whos... | Technology | Europe | null |
105953 | https://en.wikipedia.org/wiki/Crab%20louse | Crab louse | The crab louse or pubic louse (Pthirus pubis) is an insect that is an obligate ectoparasite of humans, feeding exclusively on blood. The crab louse usually is found in the person's pubic hair. Although the louse cannot jump, it can also live in other areas of the body that are covered with coarse hair, such as the peri... | Biology and health sciences | Insects: General | Animals |
106001 | https://en.wikipedia.org/wiki/Soil%20pH | Soil pH | Soil pH is a measure of the acidity or basicity (alkalinity) of a soil. Soil pH is a key characteristic that can be used to make informative analysis both qualitative and quantitatively regarding soil characteristics. pH is defined as the negative logarithm (base 10) of the activity of hydronium ions ( or, more precise... | Physical sciences | Soil science | Earth science |
106235 | https://en.wikipedia.org/wiki/Pipette | Pipette | A pipette (sometimes spelled as pipet) is a type of laboratory tool commonly used in chemistry and biology to transport a measured volume of liquid, often as a media dispenser. Pipettes come in several designs for various purposes with differing levels of accuracy and precision, from single piece glass pipettes to mor... | Technology | Containers | null |
106240 | https://en.wikipedia.org/wiki/Aqueous%20solution | Aqueous solution | An aqueous solution is a solution in which the solvent is water. It is mostly shown in chemical equations by appending (aq) to the relevant chemical formula. For example, a solution of table salt, also known as sodium chloride (NaCl), in water would be represented as . The word aqueous (which comes from aqua) means per... | Physical sciences | Mixture | Chemistry |
106269 | https://en.wikipedia.org/wiki/Test%20tube | Test tube | A test tube, also known as a culture tube or sample tube, is a common piece of laboratory glassware consisting of a finger-like length of glass or clear plastic tubing, open at the top and closed at the bottom.
Test tubes are usually placed in special-purpose racks.
Types and usage
Chemistry
Test tubes intended for... | Technology | Containers | null |
106284 | https://en.wikipedia.org/wiki/Centrifuge | Centrifuge | A centrifuge is a device that uses centrifugal force to subject a specimen to a specified constant force - for example, to separate various components of a fluid. This is achieved by spinning the fluid at high speed within a container, thereby separating fluids of different densities (e.g. cream from milk) or liquids f... | Technology | Industrial machinery | null |
106291 | https://en.wikipedia.org/wiki/Ultracentrifuge | Ultracentrifuge | An ultracentrifuge is a centrifuge optimized for spinning a rotor at very high speeds, capable of generating acceleration as high as (approx. ). There are two kinds of ultracentrifuges, the preparative and the analytical ultracentrifuge. Both classes of instruments find important uses in molecular biology, biochemistr... | Technology | Industrial machinery | null |
106293 | https://en.wikipedia.org/wiki/Catecholamine | Catecholamine | A catecholamine (; abbreviated CA) is a monoamine neurotransmitter, an organic compound that has a catechol (benzene with two hydroxyl side groups next to each other) and a side-chain amine.
Catechol can be either a free molecule or a substituent of a larger molecule, where it represents a 1,2-dihydroxybenzene group.
... | Biology and health sciences | Neurotransmitters | Biology |
106364 | https://en.wikipedia.org/wiki/Algebraic%20structure | Algebraic structure | In mathematics, an algebraic structure or algebraic system consists of a nonempty set A (called the underlying set, carrier set or domain), a collection of operations on A (typically binary operations such as addition and multiplication), and a finite set of identities (known as axioms) that these operations must satis... | Mathematics | Abstract algebra | null |
106418 | https://en.wikipedia.org/wiki/Computational%20physics | Computational physics | Computational physics is the study and implementation of numerical analysis to solve problems in physics. Historically, computational physics was the first application of modern computers in science, and is now a subset of computational science. It is sometimes regarded as a subdiscipline (or offshoot) of theoretical p... | Physical sciences | Physics basics: General | Physics |
106421 | https://en.wikipedia.org/wiki/Library%20%28computing%29 | Library (computing) | In computer science, a library is a collection of resources that is leveraged during software development to implement a computer program.
Historically, a library consisted of subroutines (generally called functions today). The concept now includes other forms of executable code including classes and non-executable da... | Technology | Software development: General | null |
7951270 | https://en.wikipedia.org/wiki/Sign%20%28mathematics%29 | Sign (mathematics) | In mathematics, the sign of a real number is its property of being either positive, negative, or 0. Depending on local conventions, zero may be considered as having its own unique sign, having no sign, or having both positive and negative sign. In some contexts, it makes sense to distinguish between a positive and a ne... | Mathematics | Basics | null |
7953419 | https://en.wikipedia.org/wiki/Restoring%20force | Restoring force | In physics, the restoring force is a force that acts to bring a body to its equilibrium position. The restoring force is a function only of position of the mass or particle, and it is always directed back toward the equilibrium position of the system. The restoring force is often referred to in simple harmonic motion. ... | Physical sciences | Classical mechanics | Physics |
7955016 | https://en.wikipedia.org/wiki/Montreal%20Metro | Montreal Metro | The Montreal Metro (, ) is a rubber-tired underground rapid transit system serving Greater Montreal, Quebec, Canada. The metro, operated by the Société de transport de Montréal (STM), was inaugurated on October 14, 1966, during the tenure of Mayor Jean Drapeau.
It has expanded since its opening from 22 stations on two... | Technology | Canada | null |
7959065 | https://en.wikipedia.org/wiki/Trophic%20cascade | Trophic cascade | Trophic cascades are powerful indirect interactions that can control entire ecosystems, occurring when a trophic level in a food web is suppressed. For example, a top-down cascade will occur if predators are effective enough in predation to reduce the abundance, or alter the behavior of their prey, thereby releasing th... | Biology and health sciences | Ecology | Biology |
1799818 | https://en.wikipedia.org/wiki/Sea%20eagle | Sea eagle | A sea eagle or fish eagle (also called erne or ern, mostly in reference to the white-tailed eagle) is any of the birds of prey in the subfamily Haliaeetinae of the bird of prey family Accipitridae. Ten extant species exist, currently described with this label.
The subfamily has a significant reach, with a scholarly ar... | Biology and health sciences | Accipitrimorphae | Animals |
1800732 | https://en.wikipedia.org/wiki/Second%20messenger%20system | Second messenger system | Second messengers are intracellular signaling molecules released by the cell in response to exposure to extracellular signaling molecules—the first messengers. (Intercellular signals, a non-local form of cell signaling, encompassing both first messengers and second messengers, are classified as autocrine, juxtacrine, p... | Biology and health sciences | Cell processes | Biology |
12610483 | https://en.wikipedia.org/wiki/Android%20%28operating%20system%29 | Android (operating system) | Android is a mobile operating system based on a modified version of the Linux kernel and other open-source software, designed primarily for touchscreen-based mobile devices such as smartphones and tablets. Android has historically been developed by a consortium of developers known as the Open Handset Alliance, but its ... | Technology | Operating systems | null |
18348679 | https://en.wikipedia.org/wiki/Magnoliids | Magnoliids | Magnoliids, Magnoliidae or Magnolianae are a clade of flowering plants. With more than 10,000 species, including magnolias, nutmeg, bay laurel, cinnamon, avocado, black pepper, tulip tree and many others, it is the third-largest group of angiosperms after the eudicots and monocots. The group is characterized by trimero... | Biology and health sciences | Magnoliids | null |
10297736 | https://en.wikipedia.org/wiki/Rover%20%28space%20exploration%29 | Rover (space exploration) | A rover (or sometimes planetary rover) is a planetary surface exploration device designed to move over the rough surface of a planet or other planetary mass celestial bodies. Some rovers have been designed as land vehicles to transport members of a human spaceflight crew; others have been partially or fully autonomous ... | Technology | Rovers | null |
234328 | https://en.wikipedia.org/wiki/Stellar%20association | Stellar association | A stellar association is a very loose star cluster, looser than both open clusters and globular clusters. Stellar associations will normally contain from 10 to 100 or more visible stars. An association is primarily identified by commonalities in its member stars' movement vectors, ages, and chemical compositions. These... | Physical sciences | Stellar astronomy | Astronomy |
234417 | https://en.wikipedia.org/wiki/Rebar | Rebar | Rebar (short for reinforcement bar or reinforcing bar), known when massed as reinforcing steel or steel reinforcement, is a tension device added to concrete to form reinforced concrete and reinforced masonry structures to strengthen and aid the concrete under tension. Concrete is strong under compression, but has low t... | Technology | Building materials | null |
234571 | https://en.wikipedia.org/wiki/European%20eel | European eel | The European eel (Anguilla anguilla) is a species of eel. Their life history was a mystery for thousands of years, and mating in the wild has not yet been observed. The five stages of their development were originally thought to be different species. They are critically endangered due to hydroelectric dams, overfishing... | Biology and health sciences | Anguilliformes | Animals |
234665 | https://en.wikipedia.org/wiki/Viverridae | Viverridae | Viverridae is a family of small to medium-sized feliform mammals, comprising 14 genera with 33 species. This family was named and first described by John Edward Gray in 1821. Viverrids occur all over Africa, southern Europe, South and Southeast Asia across the Wallace Line. The word viverridae comes from the Latin word... | Biology and health sciences | Other carnivora | Animals |
234714 | https://en.wikipedia.org/wiki/Medical%20imaging | Medical imaging | Medical imaging is the technique and process of imaging the interior of a body for clinical analysis and medical intervention, as well as visual representation of the function of some organs or tissues (physiology). Medical imaging seeks to reveal internal structures hidden by the skin and bones, as well as to diagnose... | Technology | Food and health | null |
234802 | https://en.wikipedia.org/wiki/Blackboard | Blackboard | A blackboard or a chalkboard is a reusable writing surface on which text or drawings are made with sticks of calcium sulphate or calcium carbonate, known, when used for this purpose, as chalk. Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone.
Design
A blackboard can simply be ... | Technology | Writing tools | null |
234803 | https://en.wikipedia.org/wiki/Heart%20valve | Heart valve | A heart valve is a biological one-way valve that allows blood to flow in one direction through the chambers of the heart. A mammalian heart usually has four valves. Together, the valves determine the direction of blood flow through the heart. Heart valves are opened or closed by a difference in blood pressure on each s... | Biology and health sciences | Circulatory system | Biology |
234806 | https://en.wikipedia.org/wiki/Diazepam | Diazepam | {{Infobox drug
| Verifiedfields = changed
| Watchedfields = changed
| verifiedrevid = 443634166
| image = Diazepam structure.svg
| image_class = skin-invert-image
| width = 200
| alt =
| caption =
| image2 = Diazepam-from-xtal-3D-balls.png
| alt2 =
| pronounce =
| tradename = Valium, others
| Drugs.com =
| Medli... | Biology and health sciences | Psychiatric drugs | Health |
234857 | https://en.wikipedia.org/wiki/Yawn | Yawn | A yawn is a reflex in vertebrate animals characterized by a long inspiratory phase with gradual mouth gaping, followed by a brief climax (or acme) with muscle stretching, and a rapid expiratory phase with muscle relaxation, which typically lasts a few seconds. For fish and birds, this is described as gradual mouth gapi... | Biology and health sciences | Ethology | Biology |
234880 | https://en.wikipedia.org/wiki/Loriini | Loriini | Loriini is a tribe of small to medium-sized arboreal parrots characterized by their specialized brush-tipped tongues for feeding on nectar of various blossoms and soft fruits, preferably berries. The species form a monophyletic group within the parrot family Psittaculidae. The group consists of the lories and lorikeets... | Biology and health sciences | Psittaciformes | Animals |
234901 | https://en.wikipedia.org/wiki/Wrist | Wrist | In human anatomy, the wrist is variously defined as (1) the carpus or carpal bones, the complex of eight bones forming the proximal skeletal segment of the hand; (2) the wrist joint or radiocarpal joint, the joint between the radius and the carpus and; (3) the anatomical region surrounding the carpus including the dist... | Biology and health sciences | Skeletal system | Biology |
235029 | https://en.wikipedia.org/wiki/Nth%20root | Nth root | In mathematics, an th root of a number is a number (the root) which, when raised to the power of the positive integer , yields :
The integer is called the index or degree, and the number of which the root is taken is the radicand. A root of degree 2 is called a square root and a root of degree 3, a cube root. Roo... | Mathematics | Arithmetic | null |
235083 | https://en.wikipedia.org/wiki/Chainsaw | Chainsaw | A chainsaw (or chain saw) is a portable handheld power saw that cuts with a set of teeth attached to a rotating chain driven along a guide bar.
Modern chainsaws are typically gasoline or electric and are used in activities such as tree felling, limbing, bucking, pruning, cutting firebreaks in wildland fire suppressio... | Technology | Farm and garden machinery | null |
235175 | https://en.wikipedia.org/wiki/Trace%20element | Trace element |
A trace element is a chemical element of a minute quantity, a trace amount, especially used in referring to a micronutrient, but is also used to refer to minor elements in the composition of a rock, or other chemical substance.
In nutrition, trace elements are classified into two groups: essential trace elements, and... | Physical sciences | Geochemistry | Earth science |
235195 | https://en.wikipedia.org/wiki/Mineral%20%28nutrient%29 | Mineral (nutrient) | In the context of nutrition, a mineral is a chemical element. Some "minerals" are essential for life, but most are not. Minerals are one of the four groups of essential nutrients; the others are vitamins, essential fatty acids, and essential amino acids. The five major minerals in the human body are calcium, phosphoru... | Biology and health sciences | Health and fitness: General | Health |
235248 | https://en.wikipedia.org/wiki/Transmissible%20spongiform%20encephalopathy | Transmissible spongiform encephalopathy | Transmissible spongiform encephalopathies (TSEs), also known as prion diseases, are a group of progressive, incurable, and fatal conditions that are associated with the prion hypothesis and affect the brain and nervous system of many animals, including humans, cattle, and sheep. According to the most widespread hypothe... | Biology and health sciences | Prion diseases | Health |
235255 | https://en.wikipedia.org/wiki/Wrench | Wrench | A wrench or spanner is a tool used to provide grip and mechanical advantage in applying torque to turn objects—usually rotary fasteners, such as nuts and bolts—or keep them from turning.
In the UK, Ireland, Australia, and New Zealand spanner is the standard term. The most common shapes are called open-ended spanner a... | Technology | Hand tools | null |
235287 | https://en.wikipedia.org/wiki/Nitric%20oxide | Nitric oxide | Nitric oxide (nitrogen oxide or nitrogen monoxide) is a colorless gas with the formula . It is one of the principal oxides of nitrogen. Nitric oxide is a free radical: it has an unpaired electron, which is sometimes denoted by a dot in its chemical formula (•N=O or •NO). Nitric oxide is also a heteronuclear diatomic ... | Physical sciences | Covalent oxides | Chemistry |
235343 | https://en.wikipedia.org/wiki/Potassium%20hydroxide | Potassium hydroxide | Potassium hydroxide is an inorganic compound with the formula KOH, and is commonly called caustic potash.
Along with sodium hydroxide (NaOH), KOH is a prototypical strong base. It has many industrial and niche applications, most of which utilize its caustic nature and its reactivity toward acids. An estimated 700,000 ... | Physical sciences | Inorganic compounds | null |
235393 | https://en.wikipedia.org/wiki/Amenorrhea | Amenorrhea | Amenorrhea or amenorrhoea is the absence of a menstrual period in a female who has reached reproductive age. Physiological states of amenorrhoea are most commonly seen during pregnancy and lactation (breastfeeding).
Amenorrhoea is a symptom with many potential causes. Primary amenorrhea is defined as an absence of se... | Biology and health sciences | Symptoms and signs | Health |
235436 | https://en.wikipedia.org/wiki/Sardine | Sardine | Sardine and pilchard are common names for various species of small, oily forage fish in the herring suborder Clupeoidei. The term 'sardine' was first used in English during the early 15th century; a somewhat dubious etymology says it comes from the Italian island of Sardinia, around which sardines were once supposedly ... | Biology and health sciences | Clupeiformes | null |
235451 | https://en.wikipedia.org/wiki/Random%20walk | Random walk | In mathematics, a random walk, sometimes known as a drunkard's walk, is a stochastic process that describes a path that consists of a succession of random steps on some mathematical space.
An elementary example of a random walk is the random walk on the integer number line which starts at 0, and at each step moves +1... | Mathematics | Probability | null |
235475 | https://en.wikipedia.org/wiki/Western%20grey%20kangaroo | Western grey kangaroo | The western grey kangaroo (Macropus fuliginosus), also referred to as a western grey giant kangaroo, black-faced kangaroo, mallee kangaroo, sooty kangaroo and (when referring to the Kangaroo Island subspecies) Kangaroo Island grey kangaroo, is a large and very common kangaroo found across almost the entire southern par... | Biology and health sciences | Diprotodontia | Animals |
235548 | https://en.wikipedia.org/wiki/Appetite | Appetite | Appetite is the desire to eat food items, usually due to hunger. Appealing foods can stimulate appetite even when hunger is absent, although appetite can be greatly reduced by satiety. Appetite exists in all higher life-forms, and serves to regulate adequate energy intake to maintain metabolic needs. It is regulated by... | Biology and health sciences | Health and fitness: General | Health |
235562 | https://en.wikipedia.org/wiki/Fatigue | Fatigue | Fatigue is a state of tiredness (which is not sleepiness), exhaustion or loss of energy.
Fatigue (in the medical sense) is sometimes associated with medical conditions including autoimmune disease, organ failure, chronic pain conditions, mood disorders, heart disease, infectious diseases, and post-infectious-disease s... | Biology and health sciences | Symptoms and signs | Health |
235589 | https://en.wikipedia.org/wiki/Axolotl | Axolotl | The axolotl (; from ) (Ambystoma mexicanum) is a paedomorphic salamander closely related to the tiger salamander. It is unusual among amphibians in that it reaches adulthood without undergoing metamorphosis. Instead of taking to the land, adults remain aquatic and gilled. The species was originally found in several la... | Biology and health sciences | Salamanders and newts | Animals |
235757 | https://en.wikipedia.org/wiki/Sensor | Sensor | A sensor is a device that produces an output signal for the purpose of detecting a physical phenomenon.
In the broadest definition, a sensor is a device, module, machine, or subsystem that detects events or changes in its environment and sends the information to other electronics, frequently a computer processor.
Se... | Technology | Basics_4 | null |
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