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147572 | https://en.wikipedia.org/wiki/Camshaft | Camshaft | A camshaft is a shaft that contains a row of pointed cams in order to convert rotational motion to reciprocating motion. Camshafts are used in piston engines (to operate the intake and exhaust valves), mechanically controlled ignition systems and early electric motor speed controllers.
Camshafts in piston engines are ... | Technology | Mechanisms | null |
147685 | https://en.wikipedia.org/wiki/Geomagnetic%20storm | Geomagnetic storm | A geomagnetic storm, also known as a magnetic storm, is a temporary disturbance of the Earth's magnetosphere caused by a solar wind shock wave.
The disturbance that drives the magnetic storm may be a solar coronal mass ejection (CME) or (much less severely) a corotating interaction region (CIR), a high-speed stream of... | Physical sciences | Storms | Earth science |
147699 | https://en.wikipedia.org/wiki/Laundry | Laundry | Laundry is the washing of clothing and other textiles, and, more broadly, their drying and ironing as well. Laundry has been part of history since humans began to wear clothes, so the methods by which different cultures have dealt with this universal human need are of interest to several branches of scholarship.
Laund... | Technology | Food, water and health | null |
147728 | https://en.wikipedia.org/wiki/Toothbrush | Toothbrush | A toothbrush is a special type of brush used to clean the teeth, gums, and tongue. It consists of a head of tightly clustered bristles, atop of which toothpaste can be applied, mounted on a handle which facilitates the cleaning of hard-to-reach areas of the mouth. They should be used in conjunction with something to cl... | Biology and health sciences | Hygiene products | Health |
147735 | https://en.wikipedia.org/wiki/Toothpaste | Toothpaste | Toothpaste is a paste or gel dentifrice used with a toothbrush to clean and maintain the aesthetics and health of teeth. Toothpaste is used to promote oral hygiene: it is an abrasive that aids in removing dental plaque and food from the teeth, assists in suppressing halitosis, and delivers active ingredients (most comm... | Biology and health sciences | Hygiene products | Health |
870898 | https://en.wikipedia.org/wiki/Firing%20pin | Firing pin | A firing pin or striker is a part of the firing mechanism of a firearm that impacts the primer in the base of a cartridge and causes it to fire. In firearms terminology, a striker is a particular type of firing pin where a compressed spring acts directly on the firing pin to provide the impact force rather than it bei... | Technology | Mechanisms_2 | null |
871210 | https://en.wikipedia.org/wiki/Utricularia | Utricularia | Utricularia, commonly and collectively called the bladderworts, is a genus of carnivorous plants consisting of approximately 233 species (precise counts differ based on classification opinions; a 2001 publication lists 215 species). They occur in fresh water and wet soil as terrestrial or aquatic species across every c... | Biology and health sciences | Lamiales | Plants |
871330 | https://en.wikipedia.org/wiki/Aldrovanda%20vesiculosa | Aldrovanda vesiculosa | Aldrovanda vesiculosa, commonly known as the waterwheel plant, is the sole extant species in the flowering plant genus Aldrovanda of the family Droseraceae. The plant captures small aquatic invertebrates using traps similar to those of the Venus flytrap. The traps are arranged in whorls around a central, free-floating ... | Biology and health sciences | Caryophyllales | Plants |
873021 | https://en.wikipedia.org/wiki/Present | Present | The present is the period of time that is occurring now. The present is contrasted with the past, the period of time that has already occurred, and the future, the period of time that has yet to occur.
It is sometimes represented as a hyperplane in space-time, typically called "now", although modern physics demonstrat... | Technology | Timekeeping | null |
874073 | https://en.wikipedia.org/wiki/Siren%20%28alarm%29 | Siren (alarm) | A siren is a loud noise-making device. There are two general types: mechanical and electronic. Civil defense sirens are mounted in fixed locations and used to warn of natural disasters or attacks. Sirens are used on emergency service vehicles such as ambulances, police cars, and fire engines.
Many fire sirens (used f... | Technology | Mechanisms | null |
20077968 | https://en.wikipedia.org/wiki/Hyssopus%20officinalis | Hyssopus officinalis | Hyssopus officinalis or hyssop is a shrub in the Lamiaceae or mint family native to Southern Europe, the Middle East, and the region surrounding the Caspian Sea. Due to its purported properties as an antiseptic, cough reliever, and expectorant, it has been used in traditional herbal medicine.
Description
Hyssop is a b... | Biology and health sciences | Herbs and spices | Plants |
8543506 | https://en.wikipedia.org/wiki/Cave%20hyena | Cave hyena | Cave hyena (Crocuta (crocuta) spelaea and Crocuta (crocuta) ultima) are extinct species or subspecies of hyena known from Eurasia, which ranged from Western Europe to eastern Asia and Siberia during the Pleistocene epoch. It is well represented in many European caves, primarily dating to the Last Glacial Period. It was... | Biology and health sciences | Other carnivora | Animals |
519679 | https://en.wikipedia.org/wiki/Diol | Diol | A diol is a chemical compound containing two hydroxyl groups ( groups). An aliphatic diol may also be called a glycol. This pairing of functional groups is pervasive, and many subcategories have been identified. They are used as protecting groups of carbonyl groups, making them essential in synthesis of organic chemis... | Physical sciences | Alcohols | Chemistry |
519796 | https://en.wikipedia.org/wiki/Iodide | Iodide | An iodide ion is the ion I−. Compounds with iodine in formal oxidation state −1 are called iodides. In everyday life, iodide is most commonly encountered as a component of iodized salt, which many governments mandate. Worldwide, iodine deficiency affects two billion people and is the leading preventable cause of intell... | Physical sciences | Halide salts | Chemistry |
519841 | https://en.wikipedia.org/wiki/Nucleophilic%20addition | Nucleophilic addition | In organic chemistry, a nucleophilic addition (AN) reaction is an addition reaction where a chemical compound with an electrophilic double or triple bond reacts with a nucleophile, such that the double or triple bond is broken. Nucleophilic additions differ from electrophilic additions in that the former reactions invo... | Physical sciences | Organic reactions | Chemistry |
519887 | https://en.wikipedia.org/wiki/Fiber%20crop | Fiber crop | Fiber crops are field crops grown for their fibers, which are traditionally used to make paper, cloth, or rope.
Fiber crops are characterized by having a large concentration of cellulose, which is what gives them their strength. The fibers may be chemically modified, like in viscose (used to make rayon and cellophane)... | Technology | Basics_2 | null |
519903 | https://en.wikipedia.org/wiki/Spaniel | Spaniel | A spaniel is a type of gun dog. Spaniels were especially bred to flush game out of denser brush. By the late 17th century, spaniels had been specialized into water and land breeds. The extinct English Water Spaniel was used to retrieve water fowl shot down with arrows. Land spaniels were setting spaniels—those that cre... | Biology and health sciences | Dogs | Animals |
519924 | https://en.wikipedia.org/wiki/Marattiaceae | Marattiaceae | Marattiaceae is the only family of extant (living) ferns in the order Marattiales. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), Marattiales is the only order in the subclass Marattiidae. The family has six genera and about 110 species. Many are different in appearance from other ferns, having lar... | Biology and health sciences | Ferns | Plants |
520222 | https://en.wikipedia.org/wiki/Antarctic%20plate | Antarctic plate | The Antarctic plate is a tectonic plate containing the continent of Antarctica, the Kerguelen Plateau, and some remote islands in the Southern Ocean and other surrounding oceans. After breakup from Gondwana (the southern part of the supercontinent Pangea), the Antarctic plate began moving the continent of Antarctica so... | Physical sciences | Tectonic plates | Earth science |
520289 | https://en.wikipedia.org/wiki/Hearing%20aid | Hearing aid | A hearing aid is a device designed to improve hearing by making sound audible to a person with hearing loss. Hearing aids are classified as medical devices in most countries, and regulated by the respective regulations. Small audio amplifiers such as personal sound amplification products (PSAPs) or other plain sound re... | Technology | Devices | null |
520449 | https://en.wikipedia.org/wiki/Pacific%20plate | Pacific plate | The Pacific plate is an oceanic tectonic plate that lies beneath the Pacific Ocean. At , it is the largest tectonic plate.
The plate first came into existence as a microplate 190 million years ago, at the triple junction between the Farallon, Phoenix, and Izanagi plates. The Pacific plate subsequently grew to where it... | Physical sciences | Tectonic plates | Earth science |
520635 | https://en.wikipedia.org/wiki/Solifugae | Solifugae | Solifugae is an order of arachnids known variously as solifuges, sun spiders, camel spiders, and wind scorpions. The order includes more than 1,000 described species in about 147 genera. Despite the common names, they are neither true scorpions (order Scorpiones) nor true spiders (order Araneae). Because of this, it i... | Biology and health sciences | Arachnids | Animals |
521047 | https://en.wikipedia.org/wiki/Cocos%20plate | Cocos plate | The Cocos plate is a young oceanic tectonic plate beneath the Pacific Ocean off the west coast of Central America, named for Cocos Island, which rides upon it. The Cocos plate was created approximately 23 million years ago when the Farallon plate broke into two pieces, which also created the Nazca plate. The Cocos plat... | Physical sciences | Tectonic plates | Earth science |
521060 | https://en.wikipedia.org/wiki/Philippine%20Sea%20plate | Philippine Sea plate | The Philippine Sea plate or the Philippine plate is a tectonic plate comprising oceanic lithosphere that lies beneath the Philippine Sea, to the east of the Philippines. Most segments of the Philippines, including northern Luzon, are part of the Philippine Mobile Belt, which is geologically and tectonically separate f... | Physical sciences | Tectonic plates | Earth science |
521081 | https://en.wikipedia.org/wiki/African%20plate | African plate | The African plate, also known as the Nubian plate, is a major tectonic plate that includes much of the continent of Africa (except for its easternmost part) and the adjacent oceanic crust to the west and south. It also includes a narrow strip of Western Asia along the Mediterranean Sea, including much of Israel and Leb... | Physical sciences | Tectonic plates | Earth science |
521248 | https://en.wikipedia.org/wiki/Tropical%20forest | Tropical forest | Tropical forests are forested ecoregions with tropical climates – that is, land areas approximately bounded by the tropics of Cancer and Capricorn, but possibly affected by other factors such as prevailing winds.
Some tropical forest types are difficult to categorize. While forests in temperate areas are readily categ... | Physical sciences | Forests | Earth science |
521267 | https://en.wikipedia.org/wiki/Reflection%20%28physics%29 | Reflection (physics) | Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves. The law of reflection says that for specular reflection (for example at a mirro... | Physical sciences | Optics | null |
521369 | https://en.wikipedia.org/wiki/Proboscis | Proboscis | A proboscis () is an elongated appendage from the head of an animal, either a vertebrate or an invertebrate. In invertebrates, the term usually refers to tubular mouthparts used for feeding and sucking. In vertebrates, a proboscis is an elongated nose or snout.
Etymology
First attested in English in 1609 from Latin , ... | Biology and health sciences | External anatomy and regions of the body | Biology |
521801 | https://en.wikipedia.org/wiki/Water%20heating | Water heating | Water heating is a heat transfer process that uses an energy source to heat water above its initial temperature. Typical domestic uses of hot water include cooking, cleaning, bathing, and space heating. In industry, hot water and water heated to steam have many uses.
Domestically, water is traditionally heated in vess... | Technology | Household appliances | null |
521830 | https://en.wikipedia.org/wiki/Orthorhombic%20crystal%20system | Orthorhombic crystal system | In crystallography, the orthorhombic crystal system is one of the 7 crystal systems. Orthorhombic lattices result from stretching a cubic lattice along two of its orthogonal pairs by two different factors, resulting in a rectangular prism with a rectangular base (a by b) and height (c), such that a, b, and c are distin... | Physical sciences | Crystallography | Physics |
521843 | https://en.wikipedia.org/wiki/Hydraulic%20engineering | Hydraulic engineering | Hydraulic engineering as a sub-discipline of civil engineering is concerned with the flow and conveyance of fluids, principally water and sewage. One feature of these systems is the extensive use of gravity as the motive force to cause the movement of the fluids. This area of civil engineering is intimately related to ... | Technology | Disciplines | null |
521877 | https://en.wikipedia.org/wiki/Sodium%20hydride | Sodium hydride | Sodium hydride is the chemical compound with the empirical formula NaH. This alkali metal hydride is primarily used as a strong yet combustible base in organic synthesis. NaH is a saline (salt-like) hydride, composed of Na+ and H− ions, in contrast to molecular hydrides such as borane, silane, germane, ammonia, and met... | Physical sciences | Hydride salts | Chemistry |
521948 | https://en.wikipedia.org/wiki/Zingiber | Zingiber | Zingiber is a genus of flowering plants in the family Zingiberaceae. It is native to China, the Indian Subcontinent, New Guinea, and Southeast Asia, especially Thailand. It contains the true gingers, plants grown the world over for their culinary value. The most well known species are Z. officinale and Z. mioga, two ga... | Biology and health sciences | Zingiberales | Plants |
521970 | https://en.wikipedia.org/wiki/Oxonium%20ion | Oxonium ion | In chemistry, an oxonium ion is any cation containing an oxygen atom that has three bonds and 1+ formal charge. The simplest oxonium ion is the hydronium ion ().
Alkyloxonium
Hydronium is one of a series of oxonium ions with the formula RnH3−nO+.
Oxygen is usually pyramidal with an sp3 hybridization. Those with n = 1 ... | Physical sciences | Atomic physics | Physics |
522130 | https://en.wikipedia.org/wiki/Protonation | Protonation | In chemistry, protonation (or hydronation) is the adding of a proton (or hydron, or hydrogen cation), usually denoted by H+, to an atom, molecule, or ion, forming a conjugate acid. (The complementary process, when a proton is removed from a Brønsted–Lowry acid, is deprotonation.) Some examples include
The protonation o... | Physical sciences | Concepts | Chemistry |
522274 | https://en.wikipedia.org/wiki/Deprotonation | Deprotonation | Deprotonation (or dehydronation) is the removal (transfer) of a proton (or hydron, or hydrogen cation), (H+) from a Brønsted–Lowry acid in an acid–base reaction. The species formed is the conjugate base of that acid. The complementary process, when a proton is added (transferred) to a Brønsted–Lowry base, is protonatio... | Physical sciences | Concepts | Chemistry |
522347 | https://en.wikipedia.org/wiki/Pelagic%20zone | Pelagic zone | The pelagic zone consists of the water column of the open ocean and can be further divided into regions by depth. The word pelagic is derived . The pelagic zone can be thought of as an imaginary cylinder or water column between the surface of the sea and the bottom. Conditions in the water column change with depth: pre... | Physical sciences | Oceanography | Earth science |
522449 | https://en.wikipedia.org/wiki/Requirements%20analysis | Requirements analysis | In systems engineering and software engineering, requirements analysis focuses on the tasks that determine the needs or conditions to meet the new or altered product or project, taking account of the possibly conflicting requirements of the various stakeholders, analyzing, documenting, validating, and managing software... | Technology | Basics | null |
522476 | https://en.wikipedia.org/wiki/Stereocenter | Stereocenter | In stereochemistry, a stereocenter of a molecule is an atom (center), axis or plane that is the focus of stereoisomerism; that is, when having at least three different groups bound to the stereocenter, interchanging any two different groups creates a new stereoisomer. Stereocenters are also referred to as stereogenic c... | Physical sciences | Stereochemistry | Chemistry |
522519 | https://en.wikipedia.org/wiki/Diastereomer | Diastereomer | In stereochemistry, diastereomers (sometimes called diastereoisomers) are a type of stereoisomer. Diastereomers are defined as non-mirror image, non-identical stereoisomers. Hence, they occur when two or more stereoisomers of a compound have different configurations at one or more (but not all) of the equivalent (relat... | Physical sciences | Stereochemistry | Chemistry |
522690 | https://en.wikipedia.org/wiki/Oxalic%20acid | Oxalic acid | Oxalic acid is an organic acid with the systematic name ethanedioic acid and chemical formula , also written as or or . It is the simplest dicarboxylic acid. It is a white crystalline solid that forms a colorless solution in water. Its name comes from the fact that early investigators isolated oxalic acid from flower... | Physical sciences | Specific acids | Chemistry |
522835 | https://en.wikipedia.org/wiki/Naegleriasis | Naegleriasis | Naegleriasis, also known as primary amoebic meningoencephalitis (PAM), is an almost invariably fatal infection of the brain by the free-living unicellular eukaryote Naegleria fowleri. Symptoms are meningitis-like and include headache, fever, nausea, vomiting, a stiff neck, confusion, hallucinations and seizures. Sympto... | Biology and health sciences | Protozoan infections | Health |
522868 | https://en.wikipedia.org/wiki/Centaurus%20A | Centaurus A | Centaurus A (also known as NGC 5128 or Caldwell 77) is a galaxy in the constellation of Centaurus. It was discovered in 1826 by Scottish astronomer James Dunlop from his home in Parramatta, in New South Wales, Australia. There is considerable debate in the literature regarding the galaxy's fundamental properties such a... | Physical sciences | Notable galaxies | null |
522921 | https://en.wikipedia.org/wiki/Very%20Long%20Baseline%20Array | Very Long Baseline Array | The Very Long Baseline Array (VLBA) is a system of ten radio telescopes which are operated remotely from their Array Operations Center located in Socorro, New Mexico, as a part of the National Radio Astronomy Observatory (NRAO). These ten radio antennas work together as an array that forms the longest system in the wo... | Technology | Ground-based observatories | null |
522941 | https://en.wikipedia.org/wiki/Convention%20center | Convention center | A convention center (American English; or conference centre in British English) is a large building that is designed to hold a convention, where individuals and groups gather to promote and share common interests. Convention centers typically offer sufficient floor area to accommodate several thousand attendees. Very l... | Technology | Commercial buildings | null |
303437 | https://en.wikipedia.org/wiki/Tenant%20farmer | Tenant farmer | A tenant farmer is a person (farmer or farmworker) who resides on land owned by a landlord. Tenant farming is an agricultural production system in which landowners contribute their land and often a measure of operating capital and management, while tenant farmers contribute their labor along with at times varying amoun... | Technology | Agriculture_2 | null |
303469 | https://en.wikipedia.org/wiki/Teak | Teak | Teak (Tectona grandis) is a tropical hardwood tree species in the family Lamiaceae. It is a large, deciduous tree that occurs in mixed hardwood forests. Tectona grandis has small, fragrant white flowers arranged in dense clusters (panicles) at the end of the branches. These flowers contain both types of reproductive or... | Biology and health sciences | Lamiales | Plants |
303612 | https://en.wikipedia.org/wiki/Homo%20rudolfensis | Homo rudolfensis | Homo rudolfensis is an extinct species of archaic human from the Early Pleistocene of East Africa about 2 million years ago (mya). Because H. rudolfensis coexisted with several other hominins, it is debated what specimens can be confidently assigned to this species beyond the lectotype skull KNM-ER 1470 and other parti... | Biology and health sciences | Homo | Biology |
303731 | https://en.wikipedia.org/wiki/Risso%27s%20dolphin | Risso's dolphin | Risso's dolphin (Grampus griseus) is a marine mammal and dolphin, the only species of the genus Grampus. Some of the most closely related species to these dolphins include: pilot whales (Globicephala spp.), pygmy killer whales (Feresa attenuata), melon-headed whales (Peponocephala electra), and false killer whales (Pse... | Biology and health sciences | Toothed whale | Animals |
303802 | https://en.wikipedia.org/wiki/Phase%20rule | Phase rule | In thermodynamics, the phase rule is a general principle governing multi-component, multi-phase systems in thermodynamic equilibrium. For a system without chemical reactions, it relates the number of freely varying intensive properties () to the number of components (), the number of phases (), and number of ways of pe... | Physical sciences | Phase transitions | Physics |
304011 | https://en.wikipedia.org/wiki/Onyx | Onyx | Onyx is the parallel-banded variety of chalcedony, a silicate mineral. Agate and onyx are both varieties of layered chalcedony that differ only in the form of the bands. Onyx has parallel bands, while agate has curved bands. The colors of its bands range from black to almost every color. Specimens of onyx commonly cont... | Physical sciences | Silicate minerals | Earth science |
304091 | https://en.wikipedia.org/wiki/Annatto | Annatto | Annatto ( or ) is an orange-red condiment and food coloring derived from the seeds of the achiote tree (Bixa orellana), native to tropical parts of the Americas. It is often used to impart a yellow to red-orange color to foods, but sometimes also for its flavor and aroma. Its scent is described as "slightly peppery wit... | Biology and health sciences | Herbs and spices | Plants |
304471 | https://en.wikipedia.org/wiki/Case%20study | Case study | A case study is an in-depth, detailed examination of a particular case (or cases) within a real-world context. For example, case studies in medicine may focus on an individual patient or ailment; case studies in business might cover a particular firm's strategy or a broader market; similarly, case studies in politics c... | Physical sciences | Research methods | Basics and measurement |
304588 | https://en.wikipedia.org/wiki/Brain%20injury | Brain injury | Brain injury (BI) is the destruction or degeneration of brain cells. Brain injuries occur due to a wide range of internal and external factors. In general, brain damage refers to significant, undiscriminating trauma-induced damage.
A common category with the greatest number of injuries is traumatic brain injury (TBI) ... | Biology and health sciences | Injury | null |
304604 | https://en.wikipedia.org/wiki/Mechatronics | Mechatronics | Mechatronics engineering, also called mechatronics, is an interdisciplinary branch of engineering that focuses on the integration of mechanical engineering, electrical engineering, electronic engineering and software engineering, and also includes a combination of robotics, computer science, telecommunications, systems... | Technology | Disciplines | null |
304684 | https://en.wikipedia.org/wiki/Agaricus%20bisporus | Agaricus bisporus | Agaricus bisporus, commonly known as the cultivated mushroom, is a basidiomycete mushroom native to grasslands in Eurasia and North America. It is cultivated in more than 70 countries and is one of the most commonly and widely consumed mushrooms in the world. It has two color states while immature – white and brown – b... | Biology and health sciences | Edible fungi | Plants |
304875 | https://en.wikipedia.org/wiki/Blogger%20%28service%29 | Blogger (service) | Blogger is an American online content management system founded in 1999 that enables its users to write blogs with time-stamped entries. Pyra Labs developed it before being acquired by Google in 2003. Google hosts the blogs, which can be accessed through a subdomain of blogspot.com. Blogs can also be accessed from a us... | Technology | Social network and blogging | null |
304942 | https://en.wikipedia.org/wiki/Heart%20rate | Heart rate | Heart rate is the frequency of the heartbeat measured by the number of contractions of the heart per minute (beats per minute, or bpm). The heart rate varies according to the body's physical needs, including the need to absorb oxygen and excrete carbon dioxide. It is also modulated by numerous factors, including (but n... | Biology and health sciences | Symptoms and signs | Health |
305136 | https://en.wikipedia.org/wiki/Visual%20system | Visual system | The visual system is the physiological basis of visual perception (the ability to detect and process light). The system detects, transduces and interprets information concerning light within the visible range to construct an image and build a mental model of the surrounding environment. The visual system is associated ... | Biology and health sciences | Nervous system | null |
305225 | https://en.wikipedia.org/wiki/Manganese%20dioxide | Manganese dioxide | Manganese dioxide is the inorganic compound with the formula . This blackish or brown solid occurs naturally as the mineral pyrolusite, which is the main ore of manganese and a component of manganese nodules. The principal use for is for dry-cell batteries, such as the alkaline battery and the zinc–carbon battery. is... | Physical sciences | Oxide salts | Chemistry |
305286 | https://en.wikipedia.org/wiki/Legume | Legume | Legumes () are plants in the family Fabaceae (or Leguminosae), or the fruit or seeds of such plants. When used as a dry grain for human consumption, the seeds are also called pulses. Legumes are grown agriculturally, primarily for human consumption, but also as livestock forage and silage, and as soil-enhancing green m... | Biology and health sciences | Pulses | Plants |
305303 | https://en.wikipedia.org/wiki/Multiset | Multiset | In mathematics, a multiset (or bag, or mset) is a modification of the concept of a set that, unlike a set, allows for multiple instances for each of its elements. The number of instances given for each element is called the multiplicity of that element in the multiset. As a consequence, an infinite number of multisets ... | Mathematics | Set theory | null |
305313 | https://en.wikipedia.org/wiki/Viscacha | Viscacha | Viscacha or vizcacha (, ) are rodents of two genera (Lagidium and Lagostomus) in the family Chinchillidae. They are native to South America and convergently resemble rabbits.
The five extant species of viscacha are:
The plains viscacha (Lagostomus maximus), a resident of the Pampas of Argentina, is easily different... | Biology and health sciences | Rodents | Animals |
305399 | https://en.wikipedia.org/wiki/Porphyry%20%28geology%29 | Porphyry (geology) | Porphyry ( ) is any of various granites or igneous rocks with coarse-grained crystals such as feldspar or quartz dispersed in a fine-grained silicate-rich, generally aphanitic matrix or groundmass. In its non-geologic, traditional use, the term porphyry usually refers to the purple-red form of this stone, valued for it... | Physical sciences | Igneous rocks | Earth science |
305405 | https://en.wikipedia.org/wiki/Extrusive%20rock | Extrusive rock | Extrusive rock refers to the mode of igneous volcanic rock formation in which hot magma from inside the Earth flows out (extrudes) onto the surface as lava or explodes violently into the atmosphere to fall back as pyroclastics or tuff. In contrast, intrusive rock refers to rocks formed by magma which cools below the su... | Physical sciences | Igneous rocks | Earth science |
305413 | https://en.wikipedia.org/wiki/Amphibolite | Amphibolite | Amphibolite () is a metamorphic rock that contains amphibole, especially hornblende and actinolite, as well as plagioclase feldspar, but with little or no quartz. It is typically dark-colored and dense, with a weakly foliated or schistose (flaky) structure. The small flakes of black and white in the rock often give it ... | Physical sciences | Metamorphic rocks | Earth science |
305429 | https://en.wikipedia.org/wiki/Feldspathoid | Feldspathoid | The feldspathoids are a group of tectosilicate minerals which resemble feldspars but have a different structure and much lower silica content. They occur in rare and unusual types of igneous rocks, and are usually not found in rocks containing primary quartz. A notable exception where feldspathoids and quartz-bearing r... | Physical sciences | Silicate minerals | Earth science |
305465 | https://en.wikipedia.org/wiki/Lens%20%28vertebrate%20anatomy%29 | Lens (vertebrate anatomy) | The lens, or crystalline lens, is a transparent biconvex structure in most land vertebrate eyes. Relatively long, thin fiber cells make up the majority of the lens. These cells vary in architecture and are arranged in concentric layers. New layers of cells are recruited from a thin epithelium at the front of the lens, ... | Biology and health sciences | Visual system | Biology |
305649 | https://en.wikipedia.org/wiki/Oceanic%20dolphin | Oceanic dolphin | Oceanic dolphins or Delphinidae are a widely distributed family of dolphins that live in the sea. Close to forty extant species are recognised. They include several big species whose common names contain "whale" rather than "dolphin", such as the Globicephalinae (round-headed whales, which include the false killer whal... | Biology and health sciences | Toothed whale | Animals |
305715 | https://en.wikipedia.org/wiki/Lupinus | Lupinus | Lupinus, commonly known as lupin, lupine, or regionally bluebonnet, is a genus of plants in the legume family Fabaceae. The genus includes over 199 species, with centres of diversity in North and South America. Smaller centres occur in North Africa and the Mediterranean. They are widely cultivated, both as a food sourc... | Biology and health sciences | Fabales | Plants |
305742 | https://en.wikipedia.org/wiki/Squamata | Squamata | Squamata (, Latin squamatus, 'scaly, having scales') is the largest order of reptiles, comprising lizards and snakes. With over 12,162 species, it is also the second-largest order of extant (living) vertebrates, after the perciform fish. Squamates are distinguished by their skins, which bear horny scales or shields, an... | Biology and health sciences | Lizards and other Squamata | Animals |
305746 | https://en.wikipedia.org/wiki/Sauria | Sauria | Sauria is the clade of diapsids containing the most recent common ancestor of Archosauria (which includes crocodilians and birds) and Lepidosauria (which includes squamates and the tuatara), and all its descendants. Since most molecular phylogenies recover turtles as more closely related to archosaurs than to lepidosau... | Biology and health sciences | Reptiles: General | Animals |
305854 | https://en.wikipedia.org/wiki/Text%20messaging | Text messaging | Text messaging, or simply texting, is the act of composing and sending electronic messages, typically consisting of alphabetic and numeric characters, between two or more users of mobile phones, tablet computers, smartwatches, desktops/laptops, or another type of compatible computer. Text messages may be sent over a ce... | Technology | Media and communication | null |
305924 | https://en.wikipedia.org/wiki/Computational%20fluid%20dynamics | Computational fluid dynamics | Computational fluid dynamics (CFD) is a branch of fluid mechanics that uses numerical analysis and data structures to analyze and solve problems that involve fluid flows. Computers are used to perform the calculations required to simulate the free-stream flow of the fluid, and the interaction of the fluid (liquids and... | Physical sciences | Fluid mechanics | Physics |
3694774 | https://en.wikipedia.org/wiki/Formal%20science | Formal science | Formal science is a branch of science studying disciplines concerned with abstract structures described by formal systems, such as logic, mathematics, statistics, theoretical computer science, artificial intelligence, information theory, game theory, systems theory, decision theory and theoretical linguistics. Whereas ... | Physical sciences | Science basics | Basics and measurement |
3696045 | https://en.wikipedia.org/wiki/African%20wild%20ass | African wild ass | The African wild ass (Equus africanus) or African wild donkey is a wild member of the horse family, Equidae. This species is thought to be the ancestor of the domestic donkey (Equus asinus), which is sometimes placed within the same species. They live in the deserts and other arid areas of the Horn of Africa, in Eritre... | Biology and health sciences | Equidae | Animals |
2736310 | https://en.wikipedia.org/wiki/Domestic%20goose | Domestic goose | A domestic goose is a goose that humans have domesticated and kept for their meat, eggs, or down feathers, or as companion animals. Domestic geese have been derived through selective breeding from the wild greylag goose (Anser anser domesticus) and swan goose (Anser cygnoides domesticus).
Origins
In Europe, northern A... | Biology and health sciences | Anseriformes | Animals |
2737484 | https://en.wikipedia.org/wiki/English%20landscape%20garden | English landscape garden | The English landscape garden, also called English landscape park or simply the English garden (, , , , ), is a style of "landscape" garden which emerged in England in the early 18th century, and spread across Europe, replacing the more formal, symmetrical French formal garden which had emerged in the 17th century as th... | Technology | Buildings and infrastructure | null |
21171721 | https://en.wikipedia.org/wiki/Sea%20level%20rise | Sea level rise | Between 1901 and 2018, the average sea level rose by , with an increase of per year since the 1970s. This was faster than the sea level had ever risen over at least the past 3,000 years. The rate accelerated to /yr for the decade 2013–2022. Climate change due to human activities is the main cause. Between 1993 and 201... | Physical sciences | Oceanography | Earth science |
21174200 | https://en.wikipedia.org/wiki/Gonggong%20%28dwarf%20planet%29 | Gonggong (dwarf planet) | Gonggong (minor-planet designation: 225088 Gonggong) is a dwarf planet and a member of the scattered disc beyond Neptune. It has a highly eccentric and inclined orbit during which it ranges from from the Sun. , its distance from the Sun is , and it is the sixth-farthest known Solar System object. According to the Deep... | Physical sciences | Solar System | Astronomy |
5010838 | https://en.wikipedia.org/wiki/Sine%20and%20cosine | Sine and cosine | In mathematics, sine and cosine are trigonometric functions of an angle. The sine and cosine of an acute angle are defined in the context of a right triangle: for the specified angle, its sine is the ratio of the length of the side that is opposite that angle to the length of the longest side of the triangle (the hypot... | Mathematics | Specific functions | null |
5012175 | https://en.wikipedia.org/wiki/Albatross | Albatross | Albatrosses, of the biological family Diomedeidae, are large seabirds related to the procellariids, storm petrels, and diving petrels in the order Procellariiformes (the tubenoses). They range widely in the Southern Ocean and the North Pacific. They are absent from the North Atlantic, although fossil remains of short-t... | Biology and health sciences | Procellariiformes | null |
27051151 | https://en.wikipedia.org/wiki/Big%20data | Big data | Big data primarily refers to data sets that are too large or complex to be dealt with by traditional data-processing software. Data with many entries (rows) offer greater statistical power, while data with higher complexity (more attributes or columns) may lead to a higher false discovery rate.
Big data analysis chall... | Technology | Computer software | null |
27051968 | https://en.wikipedia.org/wiki/Indigenous%20horticulture | Indigenous horticulture | Indigenous horticulture is practised in various ways across all inhabited continents. Indigenous refers to the native peoples of a given area and horticulture is the practice of small-scale intercropping.
Africa
North Africa
In North Africa, one such example is the farming practices of the Eggon, a Nigerian hill farm... | Technology | Horticulture | null |
22661773 | https://en.wikipedia.org/wiki/Animal-free%20agriculture | Animal-free agriculture | Animal-free agriculture, also known as plant agriculture, plant-based agriculture, veganic agriculture, stockfree farming, plant farming or veganic farming, consists of farming methods that do not use animals or animal products.
Animal-free growers do not keep domesticated animals and do not use animal products such a... | Technology | Agriculture_2 | null |
20082214 | https://en.wikipedia.org/wiki/Obsessive%E2%80%93compulsive%20disorder | Obsessive–compulsive disorder | Obsessive–compulsive disorder (OCD) is a mental and behavioral disorder in which an individual has intrusive thoughts (an obsession) and feels the need to perform certain routines (compulsions) repeatedly to relieve the distress caused by the obsession, to the extent where it impairs general function.
Obsessions are p... | Biology and health sciences | Mental disorders | Health |
6587493 | https://en.wikipedia.org/wiki/Candareen | Candareen | A candareen (; ; Singapore English usage: hoon) is a traditional measurement of weight in East Asia. It is equal to 10 cash and is of a mace. It is approximately 378 milligrams. A troy candareen is approximately .
In Hong Kong, one candareen is 0.3779936375 grams and, in the Weights and Measures Ordinance, it is ou... | Physical sciences | Chinese | Basics and measurement |
6587584 | https://en.wikipedia.org/wiki/Mace%20%28unit%29 | Mace (unit) | A mace (; Hong Kong English usage: tsin; Southeast Asian English usage: chee) is a traditional Chinese measurement of weight in East Asia that was also used as a currency denomination. It is equal to 10 candareens and is of a tael or approximately 3.78 grams. A troy mace is approximately 3.7429 grams. In Hong Kong, on... | Physical sciences | Chinese | Basics and measurement |
6588022 | https://en.wikipedia.org/wiki/Lithium%20borohydride | Lithium borohydride | Lithium borohydride (LiBH4) is a borohydride and known in organic synthesis as a reducing agent for esters. Although less common than the related sodium borohydride, the lithium salt offers some advantages, being a stronger reducing agent and highly soluble in ethers, whilst remaining safer to handle than lithium alum... | Physical sciences | Borohydride salts | Chemistry |
1340551 | https://en.wikipedia.org/wiki/Crown%20%28dental%20restoration%29 | Crown (dental restoration) | In dentistry, a crown or a dental cap is a type of dental restoration that completely caps or encircles a tooth or dental implant. A crown may be needed when a large dental cavity threatens the health of a tooth. Some dentists will also finish root canal treatment by covering the exposed tooth with a crown. A crown is... | Biology and health sciences | Dental treatments | Health |
1343446 | https://en.wikipedia.org/wiki/Pandanus | Pandanus | Pandanus is a genus of monocots with about 578 accepted species. They are palm-like, dioecious trees and shrubs native to the Old World tropics and subtropics. Common names include pandan, screw palm and screw pine. They are classified in the order Pandanales, family Pandanaceae.
Description
The species vary in size... | Biology and health sciences | Monocots | null |
1343550 | https://en.wikipedia.org/wiki/P%20wave | P wave | A P wave (primary wave or pressure wave) is one of the two main types of elastic body waves, called seismic waves in seismology. P waves travel faster than other seismic waves and hence are the first signal from an earthquake to arrive at any affected location or at a seismograph. P waves may be transmitted through gas... | Physical sciences | Seismology | Earth science |
30125638 | https://en.wikipedia.org/wiki/Cubic%20metre | Cubic metre | The cubic metre (in Commonwealth English and international spelling as used by the International Bureau of Weights and Measures) or cubic meter (in American English) is the unit of volume in the International System of Units (SI). Its symbol is m3. It is the volume of a cube with edges one metre in length. An alternat... | Physical sciences | Volume | Basics and measurement |
28691804 | https://en.wikipedia.org/wiki/Mineral%20physics | Mineral physics | Mineral physics is the science of materials that compose the interior of planets, particularly the Earth. It overlaps with petrophysics, which focuses on whole-rock properties. It provides information that allows interpretation of surface measurements of seismic waves, gravity anomalies, geomagnetic fields and electrom... | Physical sciences | Minerals | Earth science |
28691929 | https://en.wikipedia.org/wiki/Protective%20relay | Protective relay | In electrical engineering, a protective relay is a relay device designed to trip a circuit breaker when a fault is detected. The first protective relays were electromagnetic devices, relying on coils operating on moving parts to provide detection of abnormal operating conditions such as over-current, overvoltage, rever... | Technology | Electrical protective devices | null |
27072071 | https://en.wikipedia.org/wiki/Unit%20circle | Unit circle | In mathematics, a unit circle is a circle of unit radius—that is, a radius of 1. Frequently, especially in trigonometry, the unit circle is the circle of radius 1 centered at the origin (0, 0) in the Cartesian coordinate system in the Euclidean plane. In topology, it is often denoted as because it is a one-dimensiona... | Mathematics | Trigonometry | null |
27077017 | https://en.wikipedia.org/wiki/Flocculent%20spiral%20galaxy | Flocculent spiral galaxy | A flocculent spiral galaxy is a type of spiral galaxy. Unlike the well-defined spiral architecture of a grand design spiral galaxy, flocculent (meaning "flaky") galaxies are patchy, with discontinuous spiral arms. Self-propagating star formation is the apparent explanation for the structure of flocculent spirals. Appro... | Physical sciences | Galaxy classification | Astronomy |
1972407 | https://en.wikipedia.org/wiki/Neritic%20zone | Neritic zone | The neritic zone (or sublittoral zone) is the relatively shallow part of the ocean above the drop-off of the continental shelf, approximately in depth.
From the point of view of marine biology it forms a relatively stable and well-illuminated environment for marine life, from plankton up to large fish and corals, whil... | Physical sciences | Oceanography | Earth science |
1973155 | https://en.wikipedia.org/wiki/Parasaurolophus | Parasaurolophus | Parasaurolophus (; meaning "beside crested lizard" in reference to Saurolophus) is a genus of hadrosaurid "duck-billed" dinosaur that lived in what is now western North America and possibly Asia during the Late Cretaceous period, about 76.9–73.5 million years ago. It was a large herbivore that could reach over long an... | Biology and health sciences | Ornitischians | Animals |
1974142 | https://en.wikipedia.org/wiki/Depletion%20region | Depletion region | In semiconductor physics, the depletion region, also called depletion layer, depletion zone, junction region, space charge region, or space charge layer, is an insulating region within a conductive, doped semiconductor material where the mobile charge carriers have diffused away, or been forced away by an electric fiel... | Physical sciences | Electrical circuits | Physics |
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