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54195817 | https://en.wikipedia.org/wiki/Korean%20units%20of%20measurement | Korean units of measurement | Korean units of measurement, called cheokgwan-beop () or cheokgeun-beop () in Korean, is the traditional system of measurement used by the people of the Korean peninsula. It is largely based on the Chinese system, with influence from Japanese standards imposed following its annexation of the Korean Empire in 1910. Both... | Physical sciences | Measurement systems | Basics and measurement | 2,282 |
52855912 | https://en.wikipedia.org/wiki/Sodium%20calcium%20edetate | Sodium calcium edetate | Sodium calcium edetate (sodium calcium EDTA), also known as edetate calcium disodium among other names, is a medication primarily used to treat lead poisoning, including both short-term and long-term lead poisoning. Sodium calcium edetate came into medical use in the United States in 1953.
Chelation agent
Sodium calc... | Physical sciences | Organic salts | Chemistry | 322 |
47262026 | https://en.wikipedia.org/wiki/Ultra-high-definition%20television | Ultra-high-definition television | Ultra-high-definition television (also known as Ultra HD television, Ultra HD, UHDTV, UHD and Super Hi-Vision) today includes 4K UHD and 8K UHD, which are two digital video formats with an aspect ratio of 16:9. These were first proposed by NHK Science & Technology Research Laboratories and later defined and approved by... | Technology | Broadcasting | null | 9,146 |
52871617 | https://en.wikipedia.org/wiki/Bomdong | Bomdong | Bomdong (), also known as spring cabbage, is a hardy cabbage with tough, sweet leaves. The leaves of bomdong, unlike those of regular napa cabbages, fall to the sides, giving the plant a flat shape. This cabbage is primarily used in the making of kimchi and salads. 70% of the bomdong grown in Korea comes from South Jeo... | Biology and health sciences | Leafy vegetables | Plants | 135 |
59107356 | https://en.wikipedia.org/wiki/Unbiquadium | Unbiquadium | Unbiquadium, also known as element 124 or eka-uranium, is a hypothetical chemical element; it has placeholder symbol Ubq and atomic number 124. Unbiquadium and Ubq are the temporary IUPAC name and symbol, respectively, until the element is discovered, confirmed, and a permanent name is decided upon. In the periodic tab... | Physical sciences | Periods | Chemistry | 3,113 |
59107367 | https://en.wikipedia.org/wiki/Unbihexium | Unbihexium | Unbihexium, also known as element 126 or eka-plutonium, is a hypothetical chemical element; it has atomic number 126 and placeholder symbol Ubh. Unbihexium and Ubh are the temporary IUPAC name and symbol, respectively, until the element is discovered, confirmed, and a permanent name is decided upon. In the periodic tab... | Physical sciences | Periods | Chemistry | 3,177 |
61747300 | https://en.wikipedia.org/wiki/2I/Borisov | 2I/Borisov | 2I/Borisov, originally designated C/2019 Q4 (Borisov), is the first observed rogue comet and the second observed interstellar interloper after ʻOumuamua. It was discovered by the Crimean amateur astronomer and telescope maker Gennadiy Borisov on 29 August 2019 UTC (30 August local time).
2I/Borisov has a heliocentric ... | Physical sciences | Other notable objects | Astronomy | 2,841 |
50530370 | https://en.wikipedia.org/wiki/Neon%20compounds | Neon compounds | Neon compounds are chemical compounds containing the element neon (Ne) with other molecules or elements from the periodic table. Compounds of the noble gas neon were believed not to exist, but there are now known to be molecular ions containing neon, as well as temporary excited neon-containing molecules called excimer... | Physical sciences | Noble gas compounds | Chemistry | 2,746 |
44163394 | https://en.wikipedia.org/wiki/486958%20Arrokoth | 486958 Arrokoth | 486958 Arrokoth (provisional designation ; formerly nicknamed Ultima Thule) is a trans-Neptunian object located in the Kuiper belt. Arrokoth became the farthest and most primitive object in the Solar System visited by a spacecraft when the NASA space probe New Horizons conducted a flyby on 1 January 2019. Arrokoth is a... | Physical sciences | Solar System | Astronomy | 7,408 |
39913055 | https://en.wikipedia.org/wiki/Imperial%20and%20US%20customary%20measurement%20systems | Imperial and US customary measurement systems | The imperial and US customary measurement systems are both derived from an earlier English system of measurement which in turn can be traced back to Ancient Roman units of measurement, and Carolingian and Saxon units of measure.
The US Customary system of units was developed and used in the United States after the Ame... | Physical sciences | Measurement systems | Basics and measurement | 6,747 |
54210779 | https://en.wikipedia.org/wiki/Berman%20flow | Berman flow | In fluid dynamics, Berman flow is a steady flow created inside a rectangular channel with two equally porous walls. The concept is named after a scientist Abraham S. Berman who formulated the problem in 1953.
Flow description
Consider a rectangular channel of width much longer than the height. Let the distance between... | Physical sciences | Fluid mechanics | Physics | 412 |
52880788 | https://en.wikipedia.org/wiki/Hypernova | Hypernova | A hypernova is a very energetic supernova which is believed to result from an extreme core collapse scenario. In this case, a massive star (>30 solar masses) collapses to form a rotating black hole emitting twin astrophysical jets and surrounded by an accretion disk. It is a type of stellar explosion that ejects materi... | Physical sciences | Stellar astronomy | Astronomy | 1,641 |
59126142 | https://en.wikipedia.org/wiki/Open%20source | Open source | Open source is source code that is made freely available for possible modification and redistribution. Products include permission to use and view the source code, design documents, or content of the product. The open source model is a decentralized software development model that encourages open collaboration.
A main ... | Technology | Basics_4 | null | 6,286 |
39923620 | https://en.wikipedia.org/wiki/Lithium%20%28medication%29 | Lithium (medication) | Certain lithium compounds, also known as lithium salts, are used as psychiatric medication, primarily for bipolar disorder and for major depressive disorder. Lithium is taken orally (by mouth).
Common side effects include increased urination, shakiness of the hands, and increased thirst. Serious side effects include h... | Biology and health sciences | Psychiatric drugs | Health | 7,613 |
51367694 | https://en.wikipedia.org/wiki/Pnictogen%20hydride | Pnictogen hydride | Pnictogen hydrides or hydrogen pnictides are binary compounds of hydrogen with pnictogen ( or ; from "to choke" and -gen, "generator") atoms (elements of group 15: nitrogen, phosphorus, arsenic, antimony, bismuth, and moscovium) covalently bonded to hydrogen.
Pnictogen trihydrides
The simplest series has the chemical... | Physical sciences | Hydrogen compounds | Chemistry | 960 |
49037459 | https://en.wikipedia.org/wiki/Domesticated%20quail | Domesticated quail | A domesticated quail is a domestic form of the quail, a collective name which refers to a group of several small species of fowl. Thousands of years of breeding and domestication have guided the bird's evolution. Humans domesticated quails for meat and egg production; additionally, quails can be kept as pets. Domestica... | Biology and health sciences | Galliformes | Animals | 797 |
54241771 | https://en.wikipedia.org/wiki/Biblical%20mile | Biblical mile | Biblical mile () is a unit of distance on land, or linear measure, principally used by Jews during the Herodian dynasty to ascertain distances between cities and to mark the Sabbath limit, equivalent to about ⅔ of an English statute mile, or what was about four furlongs (four stadia). The basic Jewish traditional unit ... | Physical sciences | Other | Basics and measurement | 771 |
57557247 | https://en.wikipedia.org/wiki/Seismic%20zone | Seismic zone | In seismology, a seismic zone or seismic belt is an area of seismicity potentially sharing a common cause. It can be referred to as an earthquake belt as well. It may also be a region on a map for which a common areal rate of seismicity is assumed for the purpose of calculating probabilistic ground motions. An obsolete... | Physical sciences | Seismology | Earth science | 270 |
41347987 | https://en.wikipedia.org/wiki/Infectious%20diseases%20%28medical%20specialty%29 | Infectious diseases (medical specialty) | Infectious diseases (ID), also known as infectiology, is a medical specialty dealing with the diagnosis and treatment of infections. An infectious diseases specialist's practice consists of managing nosocomial (healthcare-acquired) infections or community-acquired infections. An ID specialist investigates and determine... | Biology and health sciences | Fields of medicine | Health | 1,497 |
54258215 | https://en.wikipedia.org/wiki/Local%20Hole | Local Hole | The KBC Void (or Local Hole) is an immense, comparatively empty region of space, named after astronomers Ryan Keenan, Amy Barger, and Lennox Cowie, who studied it in 2013. The existence of a local underdensity has been the subject of many pieces of literature and research articles.
The underdensity is proposed to be r... | Physical sciences | Notable patches of universe | Astronomy | 432 |
62786585 | https://en.wikipedia.org/wiki/SARS-CoV-2 | SARS-CoV-2 | Severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2) is a strain of coronavirus that causes COVID-19, the respiratory illness responsible for the COVID-19 pandemic. The virus previously had the provisional name 2019 novel coronavirus (2019-nCoV), and has also been called human coronavirus 2019 (HCoV-19 or hCoV-... | Biology and health sciences | Infectious disease | null | 5,425 |
47318223 | https://en.wikipedia.org/wiki/Kepler-452b | Kepler-452b | Kepler-452b (sometimes quoted to be an Earth 2.0 or Earth's Cousin based on its characteristics; also known by its Kepler object of interest designation KOI-7016.01) is a candidate super-Earth exoplanet orbiting within the inner edge of the habitable zone of the sun-like star Kepler-452 and is the only planet in the sy... | Physical sciences | Notable exoplanets | Astronomy | 1,557 |
64179842 | https://en.wikipedia.org/wiki/Metallization%20pressure | Metallization pressure | Metallization pressure is the pressure required for a non-metallic chemical element to become a metal. Every material is predicted to turn into a metal if the pressure is high enough, and temperature low enough. Some of these pressures are beyond the reach of diamond anvil cells, and are thus theoretical predictions. N... | Physical sciences | Phase transitions | Physics | 131 |
52968860 | https://en.wikipedia.org/wiki/Biodiversity%20loss | Biodiversity loss | Biodiversity loss happens when plant or animal species disappear completely from Earth (extinction) or when there is a decrease or disappearance of species in a specific area. Biodiversity loss means that there is a reduction in biological diversity in a given area. The decrease can be temporary or permanent. It is tem... | Biology and health sciences | Ecology | Biology | 5,641 |
55865352 | https://en.wikipedia.org/wiki/Seismic%20intensity%20scales | Seismic intensity scales | Seismic intensity scales categorize the intensity or severity of ground shaking (quaking) at a given location, such as resulting from an earthquake. They are distinguished from seismic magnitude scales, which measure the magnitude or overall strength of an earthquake, which may, or perhaps may not, cause perceptible sh... | Physical sciences | Seismology | Earth science | 885 |
60705059 | https://en.wikipedia.org/wiki/Paleotempestology | Paleotempestology | Paleotempestology is the study of past tropical cyclone activity by means of geological proxies as well as historical documentary records. The term was coined by American meteorologist Kerry Emanuel.
The usual approach in paleotempestology is the identification of deposits left by storms. Most commonly, these are over... | Physical sciences | Paleoclimate | Earth science | 6,022 |
65681263 | https://en.wikipedia.org/wiki/Repeating%20firearm | Repeating firearm | A repeating firearm or repeater is any firearm (either a handgun or long gun) that is designed for multiple, repeated firings before the gun has to be reloaded with new ammunition.
Unlike single-shot firearms, which can only hold and fire a single round of ammunition, a repeating firearm can store multiple cartridges ... | Technology | Mechanisms_2 | null | 7,568 |
52970582 | https://en.wikipedia.org/wiki/Diagnostic%20microbiology | Diagnostic microbiology | Diagnostic microbiology is the study of microbial identification. Since the discovery of the germ theory of disease, scientists have been finding ways to harvest specific organisms. Using methods such as differential media or genome sequencing, physicians and scientists can observe novel functions in organisms for more... | Biology and health sciences | Diagnostics | Health | 4,985 |
42814957 | https://en.wikipedia.org/wiki/Green%20iguana | Green iguana | The green iguana (Iguana iguana), also known as the American iguana or the common green iguana, is a large, arboreal, mostly herbivorous species of lizard of the genus Iguana. Usually, this animal is simply called the iguana. The green iguana ranges over a large geographic area; it is native from southern Brazil and P... | Biology and health sciences | Reptiles | null | 4,721 |
61880639 | https://en.wikipedia.org/wiki/Climate%20change%20in%20India | Climate change in India | India was ranked seventh among the list of countries most affected by climate change in 2019. India emits about 3 gigatonnes (Gt) CO2eq of greenhouse gases each year; about two and a half tons per person, which is less than the world average. The country emits 7% of global emissions, despite having 17% of the world pop... | Physical sciences | Climate change | Earth science | 4,310 |
53002210 | https://en.wikipedia.org/wiki/Bouncing%20ball | Bouncing ball | The physics of a bouncing ball concerns the physical behaviour of bouncing balls, particularly its motion before, during, and after impact against the surface of another body. Several aspects of a bouncing ball's behaviour serve as an introduction to mechanics in high school or undergraduate level physics courses. Howe... | Physical sciences | Classical mechanics | Physics | 3,584 |
59267487 | https://en.wikipedia.org/wiki/Climate%20change%20in%20Indonesia | Climate change in Indonesia | Due to its geographical and natural diversity, Indonesia is one of the countries most susceptible to the impacts of climate change. This is supported by the fact that Jakarta has been listed as the world's most vulnerable city, regarding climate change. It is also a major contributor as of the countries that has contri... | Physical sciences | Climate change | Earth science | 4,983 |
47376875 | https://en.wikipedia.org/wiki/Past%20sea%20level | Past sea level | Global or eustatic sea level has fluctuated significantly over Earth's history. The main factors affecting sea level are the amount and volume of available water and the shape and volume of the ocean basins. The primary influences on water volume are the temperature of the seawater, which affects density, and the amoun... | Physical sciences | Stratigraphy | Earth science | 2,909 |
47398884 | https://en.wikipedia.org/wiki/African%20wolf | African wolf | The African wolf (see below for other names; Canis lupaster) is a canine native to North Africa, West Africa, the Sahel, northern East Africa, and the Horn of Africa. It is listed as least concern on the IUCN Red List. In the Middle Atlas in Morocco, it was sighted in elevations as high as . It is primarily a predator ... | Biology and health sciences | Canines | Animals | 5,765 |
42870316 | https://en.wikipedia.org/wiki/Ghost%20pepper | Ghost pepper | The ghost pepper, also known as bhüt jolokia ( or 'Ghost pepper' in Assamese), is an interspecific hybrid chili pepper cultivated in Northeast India. It is a hybrid of Capsicum chinense and Capsicum frutescens.
In 2007, Guinness World Records certified that the ghost pepper was the world's hottest chili pepper, 170 ti... | Biology and health sciences | Botanical fruits used as culinary vegetables | Plants | 951 |
41451915 | https://en.wikipedia.org/wiki/Solid%20acid | Solid acid | Solid acids are acids that are insoluble in the reaction medium. They are often used as heterogeneous catalysts. Many solid acids are zeolites. A variety of techniques are used to quantify the strength of solid acids.
Examples
Examples of inorganic solid acids include silico-aluminates (zeolites, alumina, silico-alu... | Physical sciences | Concepts | Chemistry | 306 |
53037756 | https://en.wikipedia.org/wiki/Dipole%20repeller | Dipole repeller | The dipole repeller is a center of effective repulsion in the large-scale flow of galaxies in the neighborhood of the Milky Way, first detected in 2017.
It is thought to represent a large supervoid, the Dipole Repeller Void.
The dipole repeller is directly opposed to the Shapley Attractor, an over-density of galaxies ... | Physical sciences | Other notable objects | Astronomy | 631 |
70103301 | https://en.wikipedia.org/wiki/Environmental%20conflict | Environmental conflict | Environmental conflicts, socio-environmental conflict or ecological distribution conflicts (EDCs) are social conflicts caused by environmental degradation or by unequal distribution of environmental resources. The Environmental Justice Atlas documented 3,100 environmental conflicts worldwide as of April 2020 and emphas... | Physical sciences | Earth science basics: General | Earth science | 2,440 |
49168255 | https://en.wikipedia.org/wiki/Planet%20Nine | Planet Nine | Planet Nine is a hypothetical ninth planet in the outer region of the Solar System. Its gravitational effects could explain the peculiar clustering of orbits for a group of extreme trans-Neptunian objects (ETNOs), bodies beyond Neptune that orbit the Sun at distances averaging more than 250 times that of the Earth i.e.... | Physical sciences | Solar System | Astronomy | 13,301 |
68611391 | https://en.wikipedia.org/wiki/Aquamarine%20%28gem%29 | Aquamarine (gem) | Aquamarine is a pale-blue to light-green variety of the beryl family, with its name relating to water and sea. The color of aquamarine can be changed by heat, with a goal to enhance its physical appearance (though this practice is frowned upon by collectors and jewelers). It is the birth stone of March.
Aquamarine is ... | Physical sciences | Silicate minerals | Earth science | 2,147 |
51503872 | https://en.wikipedia.org/wiki/Free%20neutron%20decay | Free neutron decay | When embedded in an atomic nucleus, neutrons are (usually) stable particles. Outside the nucleus, free neutrons are unstable and have a mean lifetime of or (about and or , respectively). Therefore, the half-life for this process (which differs from the mean lifetime by a factor of ) is (about , ).
The beta decay... | Physical sciences | Particle physics: General | Physics | 1,300 |
41465868 | https://en.wikipedia.org/wiki/Shannon%20%28unit%29 | Shannon (unit) | The shannon (symbol: Sh) is a unit of information named after Claude Shannon, the founder of information theory. IEC 80000-13 defines the shannon as the information content associated with an event when the probability of the event occurring is . It is understood as such within the realm of information theory, and is c... | Physical sciences | Information | Basics and measurement | 935 |
57687117 | https://en.wikipedia.org/wiki/Rare-earth%20barium%20copper%20oxide | Rare-earth barium copper oxide | Rare-earth barium copper oxide (ReBCO) is a family of chemical compounds known for exhibiting high-temperature superconductivity (HTS). ReBCO superconductors have the potential to sustain stronger magnetic fields than other superconductor materials. Due to their high critical temperature and critical magnetic field, th... | Physical sciences | Ceramic compounds | Chemistry | 710 |
61981357 | https://en.wikipedia.org/wiki/Ribose | Ribose | Ribose is a simple sugar and carbohydrate with molecular formula C5H10O5 and the linear-form composition H−(C=O)−(CHOH)4−H. The naturally occurring form, , is a component of the ribonucleotides from which RNA is built, and so this compound is necessary for coding, decoding, regulation and expression of genes. It has ... | Biology and health sciences | Carbohydrates | Biology | 3,021 |
44362809 | https://en.wikipedia.org/wiki/Symmetry%20%28geometry%29 | Symmetry (geometry) | In geometry, an object has symmetry if there is an operation or transformation (such as translation, scaling, rotation or reflection) that maps the figure/object onto itself (i.e., the object has an invariance under the transform). Thus, a symmetry can be thought of as an immunity to change. For instance, a circle rota... | Mathematics | Other | null | 3,611 |
57718573 | https://en.wikipedia.org/wiki/Mainshock | Mainshock | In seismology, the mainshock is the largest earthquake in a sequence, sometimes preceded by one or more foreshocks, and almost always followed by many aftershocks.
Foreshock
A foreshock is an earthquake that occurs before a larger seismic event (the mainshock) and is related to it in both time and space. The designat... | Physical sciences | Seismology | Earth science | 228 |
49242352 | https://en.wikipedia.org/wiki/AlphaGo | AlphaGo | AlphaGo is a computer program that plays the board game Go. It was developed by the London-based DeepMind Technologies, an acquired subsidiary of Google. Subsequent versions of AlphaGo became increasingly powerful, including a version that competed under the name Master. After retiring from competitive play, AlphaGo Ma... | Technology | Artificial Intelligence | null | 5,872 |
55984460 | https://en.wikipedia.org/wiki/Halszkaraptor | Halszkaraptor | Halszkaraptor (; meaning "Halszka's seizer") is a genus of waterfowl-like dromaeosaurid dinosaurs from Mongolia that lived during the Late Cretaceous period. It contains only one known species, Halszkaraptor escuilliei.
The type specimen (holotype) has been compared to the bones of extant crocodilians and aquatic bird... | Biology and health sciences | Theropods | Animals | 2,682 |
51556830 | https://en.wikipedia.org/wiki/Southern%20giraffe | Southern giraffe | The southern giraffe (Giraffa giraffa), also known as two-horned giraffe, is a species of giraffe native to Southern Africa. However, the IUCN currently recognizes only one species of giraffe with nine subspecies.
Southern giraffes have rounded or blotched spots, some with star-like extensions on a light tan backgrou... | Biology and health sciences | Giraffidae | Animals | 466 |
53120575 | https://en.wikipedia.org/wiki/Disodium%20helide | Disodium helide | Disodium helide (Na2He) is a compound of helium and sodium that is stable at high pressures above . It was first predicted using the USPEX crystal structure prediction algorithm and then synthesised in 2016.
Synthesis
Na2He was predicted to be thermodynamically stable over 160 GPa and dynamically stable over 100 GPa.... | Physical sciences | Noble gas compounds | Chemistry | 495 |
42946389 | https://en.wikipedia.org/wiki/Swift%20%28programming%20language%29 | Swift (programming language) | Swift is a high-level general-purpose, multi-paradigm, compiled programming language created by Chris Lattner in 2010 for Apple Inc. and maintained by the open-source community. Swift compiles to machine code and uses an LLVM-based compiler. Swift was first released in June 2014 and the Swift toolchain has shipped in X... | Technology | Programming languages | null | 8,850 |
49271581 | https://en.wikipedia.org/wiki/Discord | Discord | Discord is an instant messaging and VoIP social platform which allows communication through voice calls, video calls, text messaging, and media. Communication can be private or take place in virtual communities called "servers". A server is a collection of persistent chat rooms and voice channels which can be accessed ... | Technology | Social network and blogging | null | 5,992 |
47490358 | https://en.wikipedia.org/wiki/Solar%20phenomena | Solar phenomena | Solar phenomena are natural phenomena which occur within the atmosphere of the Sun. They take many forms, including solar wind, radio wave flux, solar flares, coronal mass ejections, coronal heating and sunspots.
These phenomena are believed to be generated by a helical dynamo, located near the center of the Sun's mas... | Physical sciences | Solar System | Astronomy | 4,223 |
47491846 | https://en.wikipedia.org/wiki/Solar%20activity%20and%20climate | Solar activity and climate | Patterns of solar irradiance and solar variation have been a main driver of climate change over the millions to billions of years of the geologic time scale.
Evidence that this is the case comes from analysis on many timescales and from many sources, including: direct observations; composites from baskets of different... | Physical sciences | Climate change | Earth science | 4,328 |
42964218 | https://en.wikipedia.org/wiki/Balinese%20cat | Balinese cat | The Balinese is a long-haired breed of domestic cat with Siamese-style point coloration and sapphire-blue eyes. The Balinese is also known as the purebred long-haired Siamese since it originated as a natural mutation of that breed and hence is essentially the same cat but with a medium-length silky coat and a distincti... | Biology and health sciences | Cats | Animals | 1,820 |
53147698 | https://en.wikipedia.org/wiki/Metascience | Metascience | Metascience (also known as meta-research) is the use of scientific methodology to study science itself. Metascience seeks to increase the quality of scientific research while reducing inefficiency. It is also known as "research on research" and "the science of science", as it uses research methods to study how research... | Physical sciences | Science basics | Basics and measurement | 8,111 |
51596724 | https://en.wikipedia.org/wiki/Anatomical%20variation | Anatomical variation | An anatomical variation, anatomical variant, or anatomical variability is a presentation of body structure with morphological features different from those that are typically described in the majority of individuals. Anatomical variations are categorized into three types including morphometric (size or shape), consiste... | Biology and health sciences | Basic anatomy | Biology | 410 |
44419326 | https://en.wikipedia.org/wiki/Bitter%20taste%20evolution | Bitter taste evolution | The evolution of bitter taste receptors has been one of the most dynamic evolutionary adaptations to arise in multiple species. This phenomenon has been widely studied in the field of evolutionary biology because of its role in the identification of toxins often found on the leaves of inedible plants. A palate more sen... | Biology and health sciences | Sensory nervous system | Biology | 1,597 |
47512577 | https://en.wikipedia.org/wiki/Effects%20of%20climate%20change%20on%20agriculture | Effects of climate change on agriculture | There are numerous effects of climate change on agriculture, many of which are making it harder for agricultural activities to provide global food security. Rising temperatures and changing weather patterns often result in lower crop yields due to water scarcity caused by drought, heat waves and flooding. These effects... | Physical sciences | Climate change | Earth science | 10,778 |
53165654 | https://en.wikipedia.org/wiki/Descriptor%20%28chemistry%29 | Descriptor (chemistry) | In chemical nomenclature, a descriptor is a notational prefix placed before the systematic substance name, which describes the configuration or the stereochemistry of the molecule. Some of the listed descriptors should not be used in publications, as they no longer accurately correspond with the recommendations of the... | Physical sciences | Nomenclature | Chemistry | 2,853 |
68728719 | https://en.wikipedia.org/wiki/Central%20Asian%20Orogenic%20Belt | Central Asian Orogenic Belt | The Central Asian Orogenic Belt (CAOB), also called the Altaids, is one of the world's largest Phanerozoic accretionary orogens, and thus a leading laboratory of geologically recent crustal growth. The orogenic belt is bounded by the East European Craton and the North China Craton in the Northwest-Southeast direction, ... | Physical sciences | Geologic features | Earth science | 3,278 |
60871168 | https://en.wikipedia.org/wiki/Body%20%28biology%29 | Body (biology) | A body () is the physical material of an organism. It is only used for organisms which are in one part or whole. There are organisms which change from single cells to whole organisms: for example, slime molds. For them the term 'body' would mean the multicellular stage. Other uses:
Plant body: plants are modular, with ... | Biology and health sciences | Animal anatomy and morphology | Biology | 340 |
54476844 | https://en.wikipedia.org/wiki/Boolean%20algebra | Boolean algebra | In mathematics and mathematical logic, Boolean algebra is a branch of algebra. It differs from elementary algebra in two ways. First, the values of the variables are the truth values true and false, usually denoted 1 and 0, whereas in elementary algebra the values of the variables are numbers. Second, Boolean algebra u... | Mathematics | Algebra | null | 10,964 |
63030231 | https://en.wikipedia.org/wiki/COVID-19 | COVID-19 | Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2. In January 2020 the disease spread worldwide, resulting in the COVID-19 pandemic.
The symptoms of COVID‑19 can vary but often include fever, fatigue, cough, breathing difficulties, loss of smell, and loss of taste. Sympto... | Biology and health sciences | Viral diseases | Health | 15,209 |
47562547 | https://en.wikipedia.org/wiki/MicroLED | MicroLED | MicroLED, also known as micro-LED, mLED or μLED is an emerging flat-panel display technology consisting of arrays of microscopic LEDs forming the individual pixel elements. Inorganic semiconductor microLED (μLED) technology was first invented in 2000 by the research group of Hongxing Jiang and Jingyu Lin of Texas Tech ... | Technology | Media and communication: Basics | null | 2,192 |
51664225 | https://en.wikipedia.org/wiki/Antigone%20%28bird%29 | Antigone (bird) | Antigone is a genus of large birds in the crane family. The species in this genus were formerly placed in the genus Grus.
Taxonomy
The genus was named by Carl Linnaeus to be used for the sarus crane or its old name Grus major Indica because he was confused between Greek princesses Antigone of Troy who turned into a s... | Biology and health sciences | Gruiformes | Animals | 161 |
47577681 | https://en.wikipedia.org/wiki/Be%20star | Be star | Be stars are a heterogeneous set of stars with B spectral types and emission lines. A narrower definition, sometimes referred to as classical Be stars, is a non-supergiant B star whose spectrum has, or had at some time, one or more Balmer emission lines.
Definition and classification
Many stars have B-type spectra an... | Physical sciences | Stellar astronomy | Astronomy | 550 |
51711705 | https://en.wikipedia.org/wiki/Approximate%20measures | Approximate measures | Approximate measures are units of volumetric measurement which are not defined by a government or government-sanctioned organization, or which were previously defined and are now repealed, yet which remain in use.
It may be that all English-unit derived capacity measurements are derived from one original approximate m... | Physical sciences | Measurement systems | Basics and measurement | 704 |
51721949 | https://en.wikipedia.org/wiki/Argon%20compounds | Argon compounds | Argon compounds, the chemical compounds that contain the element argon, are rarely encountered due to the inertness of the argon atom. However, compounds of argon have been detected in inert gas matrix isolation, cold gases, and plasmas, and molecular ions containing argon have been made and also detected in space. One... | Physical sciences | Noble gas compounds | Chemistry | 12,949 |
63074081 | https://en.wikipedia.org/wiki/Climate%20change%20in%20the%20Middle%20East%20and%20North%20Africa | Climate change in the Middle East and North Africa | Climate change in the Middle East and North Africa (MENA) refers to changes in the climate of the MENA region and the subsequent response, adaption and mitigation strategies of countries in the region. In 2018, the MENA region emitted 3.2 billion tonnes of carbon dioxide and produced 8.7% of global greenhouse gas emiss... | Physical sciences | Climate change | Earth science | 3,306 |
73165062 | https://en.wikipedia.org/wiki/Lithophane | Lithophane | A lithophane is a thin plaque of translucent material, normally porcelain, which has been moulded to varying thickness, such that when lit from behind the different thicknesses show as different shades, forming an image. Only when lit from behind does the image display properly. They were invented in the 19th century ... | Technology | Materials | null | 1,110 |
51726398 | https://en.wikipedia.org/wiki/Detrital%20zircon%20geochronology | Detrital zircon geochronology | Detrital zircon geochronology is the science of analyzing the age of zircons deposited within a specific sedimentary unit by examining their inherent radioisotopes, most commonly the uranium–lead ratio. Zircon is a common accessory or trace mineral constituent of most granite and felsic igneous rocks. Due to its hardne... | Physical sciences | Geochronology | Earth science | 2,640 |
54561126 | https://en.wikipedia.org/wiki/Basic%20lead%20phosphite | Basic lead phosphite | Basic lead phosphite is an inorganic compound with the proposed composition Pb3O(OH)2(HPO3). The compound contains the phosphite anion, which provides the reducing properties associated with the application of this material.
It is widely used as a stabilizer for chlorine-containing polymers, especially polyvinylchlor... | Physical sciences | Phosphoric oxyanions | Chemistry | 108 |
64469899 | https://en.wikipedia.org/wiki/Uroplatinae | Uroplatinae | Uroplatinae is a subfamily of geckos in the family Gekkonidae. At least 28 genera have been found to be cluster in a clade together. In the past this was once a monotypic subfamily that included Uroplatus.
Below are the following genera:
| Biology and health sciences | Lizards and other Squamata | Animals | 58 |
47640103 | https://en.wikipedia.org/wiki/HCL%20color%20space | HCL color space | HCL (Hue-Chroma-Luminance) or LCh refers to any of the many cylindrical color space models that are designed to accord with human perception of color with the three parameters. Lch has been adopted by information visualization practitioners to present data without the bias implicit in using varying saturation. They are... | Physical sciences | Basics | Physics | 990 |
65970498 | https://en.wikipedia.org/wiki/Marine%20coastal%20ecosystem | Marine coastal ecosystem | A marine coastal ecosystem is a marine ecosystem which occurs where the land meets the ocean. Worldwide there is about of coastline. Coastal habitats extend to the margins of the continental shelves, occupying about 7 percent of the ocean surface area. Marine coastal ecosystems include many very different types of mar... | Physical sciences | Oceanography | Earth science | 8,757 |
77591639 | https://en.wikipedia.org/wiki/1 | 1 | 1 (one, unit, unity) is a number, numeral, and glyph. It is the first and smallest positive integer of the infinite sequence of natural numbers. This fundamental property has led to its unique uses in other fields, ranging from science to sports, where it commonly denotes the first, leading, or top thing in a group. 1 ... | Mathematics | Basics | null | 2,221 |
60987806 | https://en.wikipedia.org/wiki/Stretch%20sensor | Stretch sensor | A stretch sensor is a sensor which can be used to measure deformation and stretching forces such as tension or bending. They are usually made from a material that is itself soft and stretchable.
Most stretch sensors fall into one of three categories. The first type consists of an electrical conductor for which the ele... | Technology | Components | null | 293 |
56164172 | https://en.wikipedia.org/wiki/Anthias%20anthias | Anthias anthias | Anthias anthias, the swallowtail sea perch or marine goldfish, is a species of marine ray-finned fish from the family Anthiadidae. It is native to the eastern Atlantic Ocean and the Mediterranean Sea where it is associated with reefs. It is found in the aquarium trade.
Description
Anthias anthias has a rather deep bod... | Biology and health sciences | Acanthomorpha | Animals | 672 |
51807646 | https://en.wikipedia.org/wiki/Peninsula | Peninsula | A peninsula is a landform that extends from a mainland and is surrounded by water on most sides. Peninsulas exist on each continent. The largest peninsula in the world is the Arabian Peninsula.
Etymology
The word peninsula derives , . The word entered English in the 16th century.
Definitions
A peninsula is generall... | Physical sciences | Oceanic and coastal landforms | null | 739 |
71840293 | https://en.wikipedia.org/wiki/Height%20above%20mean%20sea%20level | Height above mean sea level | Height above mean sea level is a measure of a location's vertical distance (height, elevation or altitude) in reference to a vertical datum based on a historic mean sea level. In geodesy, it is formalized as orthometric height. The zero level varies in different countries due to different reference points and historic ... | Physical sciences | Metric | Basics and measurement | 485 |
59580357 | https://en.wikipedia.org/wiki/Yoga%20as%20exercise | Yoga as exercise | Yoga as exercise is a physical activity consisting mainly of postures, often connected by flowing sequences, sometimes accompanied by breathing exercises, and frequently ending with relaxation lying down or meditation. Yoga in this form has become familiar across the world, especially in the US and Europe. It is derive... | Biology and health sciences | Physical fitness | Health | 7,798 |
53365898 | https://en.wikipedia.org/wiki/Earliest%20known%20life%20forms | Earliest known life forms | The earliest known life forms on Earth may be as old as 4.1 billion years (or Ga) according to biologically fractionated graphite inside a single zircon grain in the Jack Hills range of Australia. The earliest evidence of life found in a stratigraphic unit, not just a single mineral grain, is the 3.7 Ga metasedimentary... | Biology and health sciences | Biology basics | Biology | 2,963 |
73248112 | https://en.wikipedia.org/wiki/Large%20language%20model | Large language model | A large language model (LLM) is a type of machine learning model designed for natural language processing tasks such as language generation. LLMs are language models with many parameters, and are trained with self-supervised learning on a vast amount of text.
The largest and most capable LLMs are generative pretrained... | Technology | Computer science | null | 8,098 |
47690389 | https://en.wikipedia.org/wiki/Hook | Hook | A hook is a tool consisting of a length of material, typically metal, that contains a portion that is curved/bent back or has a deeply grooved indentation, which serves to grab, latch or in any way attach itself onto another object. The hook's design allows traction forces to be relayed through the curved/indented port... | Technology | Rigid components | null | 564 |
57939963 | https://en.wikipedia.org/wiki/Random%20column%20packing | Random column packing | Random column packing is the practice of packing a distillation column with randomly fitting filtration material in order to optimize surface area over which reactants can interact while minimizing the complexity of construction of such columns. Random column packing is an alternative to structured column packing.
Pac... | Physical sciences | Phase separations | Chemistry | 705 |
64514823 | https://en.wikipedia.org/wiki/South%20Pole%20Wall | South Pole Wall | The South Pole Wall (SPW or The South Pole Wall) is a massive cosmic structure formed by a giant wall of galaxies (a galaxy filament) that extends across at least 1.37 billion light-years of space, the nearest light (and consequently part) of which is aged about half a billion light-years. The structure, in its astrono... | Physical sciences | Notable patches of universe | Astronomy | 461 |
61044116 | https://en.wikipedia.org/wiki/Upper%20mantle | Upper mantle | The upper mantle of Earth is a very thick layer of rock inside the planet, which begins just beneath the crust (at about under the oceans and about under the continents) and ends at the top of the lower mantle at . Temperatures range from approximately at the upper boundary with the crust to approximately at the bo... | Physical sciences | Tectonics | Earth science | 2,563 |
73291755 | https://en.wikipedia.org/wiki/Generative%20artificial%20intelligence | Generative artificial intelligence | Generative artificial intelligence (generative AI, GenAI, or GAI) is a subset of artificial intelligence that uses generative models to produce text, images, videos, or other forms of data. These models learn the underlying patterns and structures of their training data and use them to produce new data based on the inp... | Technology | Artificial intelligence concepts | null | 6,854 |
53409225 | https://en.wikipedia.org/wiki/Copulation%20%28zoology%29 | Copulation (zoology) | In zoology, copulation is animal sexual behavior in which a male introduces sperm into the female's body, especially directly into her reproductive tract. This is an aspect of mating. Many aquatic animals use external fertilization, whereas internal fertilization may have developed from a need to maintain gametes in a ... | Biology and health sciences | Ethology | Biology | 1,004 |
54691944 | https://en.wikipedia.org/wiki/Tunnel%20construction | Tunnel construction | Tunnels are dug in types of materials varying from soft clay to hard rock. The method of tunnel construction depends on such factors as the ground conditions, the ground water conditions, the length and diameter of the tunnel drive, the depth of the tunnel, the logistics of supporting the tunnel excavation, the final u... | Technology | Transport infrastructure | null | 2,537 |
71886336 | https://en.wikipedia.org/wiki/Nucleon%20magnetic%20moment | Nucleon magnetic moment | The nucleon magnetic moments are the intrinsic magnetic dipole moments of the proton and neutron, symbols μp and μn. The nucleus of an atom comprises protons and neutrons, both nucleons that behave as small magnets. Their magnetic strengths are measured by their magnetic moments. The nucleons interact with normal matt... | Physical sciences | Physical constants | Physics | 4,291 |
47734015 | https://en.wikipedia.org/wiki/Parakaryon | Parakaryon | Parakaryon myojinensis, also known as the Myojin parakaryote, is a highly unusual species of single-celled organism known only from a single specimen, described in 2012. It has features of both prokaryotes and eukaryotes but is apparently distinct from either group, making it unique among organisms discovered thus far.... | Biology and health sciences | Other organisms: General | Plants | 868 |
53426369 | https://en.wikipedia.org/wiki/Scotoplanes%20globosa | Scotoplanes globosa | Scotoplanes globosa, commonly known as the sea pig, is a species of sea cucumber that lives in the deep sea. It was first described by Hjalmar Théel, a Swedish scientist. Scotoplanes globosa, along with numerous other sea cucumbers were discovered by Théel during an expedition on between the years of 1873-1876. Scotop... | Biology and health sciences | Echinoderms | Animals | 1,062 |
59623952 | https://en.wikipedia.org/wiki/Lower%20mantle | Lower mantle | The lower mantle, historically also known as the mesosphere, represents approximately 56% of Earth's total volume, and is the region from 660 to 2900 km below Earth's surface; between the transition zone and the outer core. The preliminary reference Earth model (PREM) separates the lower mantle into three sections, the... | Physical sciences | Tectonics | Earth science | 1,544 |
53437703 | https://en.wikipedia.org/wiki/Iron%28III%29%20citrate | Iron(III) citrate | Ferric citrate or iron(III) citrate describes any of several complexes formed upon binding any of the several conjugate bases derived from citric acid with ferric ions. Most of these complexes are orange or red-brown. They contain two or more Fe(III) centers.
Ferric citrates contribute to the metabolism of iron by s... | Physical sciences | Citrates | Chemistry | 504 |
77669791 | https://en.wikipedia.org/wiki/Boranes | Boranes | A borane is a compound with the formula although examples include multi-boron derivatives. A large family of boron hydride clusters is also known. In addition to some applications in organic chemistry, the boranes have attracted much attention as they exhibit structures and bonding that differs strongly from the patte... | Physical sciences | Hydrogen compounds | Chemistry | 709 |
71930047 | https://en.wikipedia.org/wiki/Calcarisporiellales | Calcarisporiellales | Calcarisporiellaceae is a family of fungi within the subkingdom Mucoromycota. It is the only family in the order Calcarisporiellales, class Calcarisporiellomycetes, subphylum Calcarisporiellomycotina and phylum Calcarisporiellomycota. It contains two known genera, Calcarisporiella and Echinochlamydosporium. The two gen... | Biology and health sciences | Basics | Plants | 693 |
56272178 | https://en.wikipedia.org/wiki/Carbon%20budget | Carbon budget | A carbon budget is a concept used in climate policy to help set emissions reduction targets in a fair and effective way. It examines the "maximum amount of cumulative net global anthropogenic carbon dioxide () emissions that would result in limiting global warming to a given level". It can be expressed relative to the ... | Physical sciences | Climate change | Earth science | 2,328 |
47774240 | https://en.wikipedia.org/wiki/Homo%20naledi | Homo naledi | Homo naledi is an extinct species of archaic human discovered in 2013 in the Rising Star Cave system, Gauteng province, South Africa (See Cradle of Humankind), dating to the Middle Pleistocene 335,000–236,000 years ago. The initial discovery comprises 1,550 specimens of bone, representing 737 different skeletal element... | Biology and health sciences | Homo | Biology | 5,051 |
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