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144553 | https://en.wikipedia.org/wiki/Projectile | Projectile | A projectile is an object that is propelled by the application of an external force and then moves freely under the influence of gravity and air resistance. Although any objects in motion through space are projectiles, they are commonly found in warfare and sports (for example, a thrown baseball, kicked football, fired... | Physical sciences | Classical mechanics | Physics |
144602 | https://en.wikipedia.org/wiki/Active%20transport | Active transport | In cellular biology, active transport is the movement of molecules or ions across a cell membrane from a region of lower concentration to a region of higher concentration—against the concentration gradient. Active transport requires cellular energy to achieve this movement. There are two types of active transport: pri... | Biology and health sciences | Cell processes | null |
144652 | https://en.wikipedia.org/wiki/Riemannian%20manifold | Riemannian manifold | In differential geometry, a Riemannian manifold is a geometric space on which many geometric notions such as distance, angles, length, volume, and curvature are defined. Euclidean space, the -sphere, hyperbolic space, and smooth surfaces in three-dimensional space, such as ellipsoids and paraboloids, are all examples o... | Mathematics | Geometry | null |
144759 | https://en.wikipedia.org/wiki/Cucurbita | Cucurbita | is a genus of herbaceous fruits in the gourd family, Cucurbitaceae (also known as cucurbits or cucurbi), native to the Andes and Mesoamerica. Five edible species are grown and consumed for their flesh and seeds. They are variously known as squash, pumpkin, or gourd, depending on species, variety, and local parlance. Ot... | Biology and health sciences | Cucurbitales | null |
144792 | https://en.wikipedia.org/wiki/Russian%20Blue | Russian Blue | The Russian Blue cat (), commonly referred to as just Russian Blue, is a cat breed with colors that vary from a light shimmering silver to a darker, slate grey. The short, dense coat, which stands out from the body, has been the breed's hallmark for more than a century.
Origin
The Russian Blue is a naturally occurrin... | Biology and health sciences | Cats | Animals |
144837 | https://en.wikipedia.org/wiki/Chronic%20pain | Chronic pain | Chronic pain or chronic pain syndrome is a type of pain that is also known by other titles such as gradual burning pain, electrical pain, throbbing pain, and nauseating pain. This type of pain is sometimes confused with acute pain and can last from three months to several years; various diagnostic manuals such as DSM-5... | Biology and health sciences | Specific diseases | Health |
144865 | https://en.wikipedia.org/wiki/Tendon | Tendon | A tendon or sinew is a tough band of dense fibrous connective tissue that connects muscle to bone. It sends the mechanical forces of muscle contraction to the skeletal system, while withstanding tension.
Tendons, like ligaments, are made of collagen. The difference is that ligaments connect bone to bone, while tendons... | Biology and health sciences | Tissues | null |
144929 | https://en.wikipedia.org/wiki/Boron%20group | Boron group | |-
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The boron group are the chemical elements in group 13 of the periodic table, consisting of boron (B), aluminium (Al), gallium (Ga), indium (In), thallium (Tl) and nihonium (Nh). ... | Physical sciences | Group 13 | Chemistry |
144940 | https://en.wikipedia.org/wiki/Longitudinal%20wave | Longitudinal wave | Longitudinal waves are waves which oscillate in the direction which is parallel to the direction in which the wave travels and displacement of the medium is in the same (or opposite) direction of the wave propagation. Mechanical longitudinal waves are also called compressional or compression waves, because they produce... | Physical sciences | Waves | Physics |
145020 | https://en.wikipedia.org/wiki/Sintering | Sintering | Sintering or frittage is the process of compacting and forming a solid mass of material by pressure or heat without melting it to the point of liquefaction. Sintering happens as part of a manufacturing process used with metals, ceramics, plastics, and other materials. The atoms/molecules in the sintered material diffus... | Technology | Metallurgy | null |
145023 | https://en.wikipedia.org/wiki/Spray%20drying | Spray drying | Spray drying is a method of forming a dry powder from a liquid or slurry by rapidly drying with a hot gas. This is the preferred method of drying of many thermally-sensitive materials such as foods and pharmaceuticals, or materials which may require extremely consistent, fine particle size. Air is most commonly used as... | Physical sciences | Phase separations | Chemistry |
145025 | https://en.wikipedia.org/wiki/Honey%20possum | Honey possum | The honey possum or noolbenger (Tarsipes rostratus), is a tiny species of marsupial that feeds on the nectar and pollen of a diverse range of flowering plants. Found only in southwest Australia, it is an important pollinator for such plants as Banksia attenuata, Banksia coccinea and Adenanthos cuneatus.
Taxonomy
The ... | Biology and health sciences | Diprotodontia | Animals |
145040 | https://en.wikipedia.org/wiki/Conservation%20of%20mass | Conservation of mass | In physics and chemistry, the law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter the mass of the system must remain constant over time.
The law implies that mass can neither be created nor destroyed, although it may be rearranged in space, or the ... | Physical sciences | Chemistry: General | null |
145066 | https://en.wikipedia.org/wiki/Extractive%20metallurgy | Extractive metallurgy | Extractive metallurgy is a branch of metallurgical engineering wherein process and methods of extraction of metals from their natural mineral deposits are studied. The field is a materials science, covering all aspects of the types of ore, washing, concentration, separation, chemical processes and extraction of pure me... | Technology | Metallurgy | null |
145092 | https://en.wikipedia.org/wiki/Blacksmith | Blacksmith | A blacksmith is a metalsmith who creates objects primarily from wrought iron or steel, but sometimes from other metals, by forging the metal, using tools to hammer, bend, and cut (cf. tinsmith). Blacksmiths produce objects such as gates, grilles, railings, light fixtures, furniture, sculpture, tools, agricultural imple... | Technology | Metallurgy | null |
145095 | https://en.wikipedia.org/wiki/Motor%20vehicle | Motor vehicle | A motor vehicle, also known as a motorized vehicle, automotive vehicle, automobile, or road vehicle, is a self-propelled land vehicle, commonly wheeled, that does not operate on rails (such as trains or trams), does not fly (such as airplanes or helicopters), does not float on water (such as boats or ships), and is use... | Technology | Basics_7 | null |
145159 | https://en.wikipedia.org/wiki/Atropine | Atropine | Atropine is a tropane alkaloid and anticholinergic medication used to treat certain types of nerve agent and pesticide poisonings as well as some types of slow heart rate, and to decrease saliva production during surgery. It is typically given intravenously or by injection into a muscle. Eye drops are also available wh... | Biology and health sciences | Anesthetics | Health |
145162 | https://en.wikipedia.org/wiki/Parallel%20computing | Parallel computing | Parallel computing is a type of computation in which many calculations or processes are carried out simultaneously. Large problems can often be divided into smaller ones, which can then be solved at the same time. There are several different forms of parallel computing: bit-level, instruction-level, data, and task para... | Technology | Computer science | null |
145197 | https://en.wikipedia.org/wiki/Metallic%20hydrogen | Metallic hydrogen | Metallic hydrogen is a phase of hydrogen in which it behaves like an electrical conductor. This phase was predicted in 1935 on theoretical grounds by Eugene Wigner and Hillard Bell Huntington.
At high pressure and temperatures, metallic hydrogen can exist as a partial liquid rather than a solid, and researchers think ... | Physical sciences | Phase transitions | Physics |
145243 | https://en.wikipedia.org/wiki/Limnology | Limnology | Limnology ( ; ) is the study of inland aquatic ecosystems.
The study of limnology includes aspects of the biological, chemical, physical, and geological characteristics of fresh and saline, natural and man-made bodies of water. This includes the study of lakes, reservoirs, ponds, rivers, springs, streams, wetlands, an... | Physical sciences | Hydrology | null |
145343 | https://en.wikipedia.org/wiki/Wave%20function | Wave function | In quantum physics, a wave function (or wavefunction) is a mathematical description of the quantum state of an isolated quantum system. The most common symbols for a wave function are the Greek letters and (lower-case and capital psi, respectively). Wave functions are complex-valued. For example, a wave function migh... | Physical sciences | Quantum mechanics | null |
145424 | https://en.wikipedia.org/wiki/Exoskeleton | Exoskeleton | An exoskeleton (from Greek éxō "outer" and skeletós "skeleton") is a skeleton that is on the exterior of an animal in the form of hardened integument, which both supports the body's shape and protects the internal organs, in contrast to an internal endoskeleton (e.g. that of a human) which is enclosed underneath othe... | Biology and health sciences | Skeletal system | Biology |
145440 | https://en.wikipedia.org/wiki/Rare-earth%20element | Rare-earth element | The rare-earth elements (REE), also called the rare-earth metals or rare earths, and sometimes the lanthanides or lanthanoids (although scandium and yttrium, which do not belong to this series, are usually included as rare earths), are a set of 17 nearly indistinguishable lustrous silvery-white soft heavy metals. Compo... | Physical sciences | Lanthanides | Chemistry |
145478 | https://en.wikipedia.org/wiki/TIFF | TIFF | Tag Image File Format or Tagged Image File Format, commonly known by the abbreviations TIFF or TIF, is an image file format for storing raster graphics images, popular among graphic artists, the publishing industry, and photographers. TIFF is widely supported by scanning, faxing, word processing, optical character reco... | Technology | File formats | null |
8507183 | https://en.wikipedia.org/wiki/Vomiting | Vomiting | Vomiting (also known as emesis, puking and throwing up) is the involuntary, forceful expulsion of the contents of one's stomach through the mouth and sometimes the nose.
Vomiting can be the result of ailments like food poisoning, gastroenteritis, pregnancy, motion sickness, or hangover; or it can be an after effect of... | Biology and health sciences | Symptoms and signs | Health |
2711029 | https://en.wikipedia.org/wiki/Physics%20education | Physics education | Physics education or physics teaching refers to the education methods currently used to teach physics. The occupation is called physics educator or physics teacher. Physics education research refers to an area of pedagogical research that seeks to improve those methods. Historically, physics has been taught at the high... | Physical sciences | Physics basics: General | Physics |
2714149 | https://en.wikipedia.org/wiki/Symmetry%20in%20mathematics | Symmetry in mathematics | Symmetry occurs not only in geometry, but also in other branches of mathematics. Symmetry is a type of invariance: the property that a mathematical object remains unchanged under a set of operations or transformations.
Given a structured object X of any sort, a symmetry is a mapping of the object onto itself which pre... | Mathematics | Geometry | null |
2715469 | https://en.wikipedia.org/wiki/Symmetry%20%28physics%29 | Symmetry (physics) | The symmetry of a physical system is a physical or mathematical feature of the system (observed or intrinsic) that is preserved or remains unchanged under some transformation.
A family of particular transformations may be continuous (such as rotation of a circle) or discrete (e.g., reflection of a bilaterally symmetri... | Physical sciences | Basics_6 | null |
1959215 | https://en.wikipedia.org/wiki/Organosulfur%20chemistry | Organosulfur chemistry | Organosulfur chemistry is the study of the properties and synthesis of organosulfur compounds, which are organic compounds that contain sulfur. They are often associated with foul odors, but many of the sweetest compounds known are organosulfur derivatives, e.g., saccharin. Nature is abound with organosulfur compounds—... | Physical sciences | Organic compounds | null |
1960043 | https://en.wikipedia.org/wiki/Abies%20procera | Abies procera | Abies procera, the noble fir, also called red fir and Christmas tree, is a species of fir native to the Cascade Range and Pacific Coast Ranges of the northwestern Pacific Coast of the United States. It occurs at altitudes of .
Description
A. procera is a large evergreen conifer with a narrow conic crown, growing up to... | Biology and health sciences | Pinaceae | Plants |
1960695 | https://en.wikipedia.org/wiki/Spring%20green | Spring green | Spring green is a color that was traditionally considered to be on the yellow side of green, but in modern computer systems based on the RGB color model is halfway between cyan and green on the color wheel.
The modern spring green, when plotted on the CIE chromaticity diagram, corresponds to a visual stimulus of about... | Physical sciences | Colors | Physics |
1961488 | https://en.wikipedia.org/wiki/Ferrocerium | Ferrocerium | Ferrocerium (also known in Europe as Auermetall) is a synthetic pyrophoric alloy of mischmetal (cerium, lanthanum, neodymium, other trace lanthanides and some iron – about 95% lanthanides and 5% iron) hardened by blending in oxides of iron and/or magnesium. When struck with a harder material, friction produces hot frag... | Physical sciences | Specific alloys | Chemistry |
3675281 | https://en.wikipedia.org/wiki/Vector-valued%20function | Vector-valued function | A vector-valued function, also referred to as a vector function, is a mathematical function of one or more variables whose range is a set of multidimensional vectors or infinite-dimensional vectors. The input of a vector-valued function could be a scalar or a vector (that is, the dimension of the domain could be 1 or g... | Mathematics | Functions: General | null |
27376057 | https://en.wikipedia.org/wiki/Trapeziidae | Trapeziidae | Trapeziidae is a family of crabs, commonly known as coral crabs. All the species in the family are found in a close symbiosis with cnidarians. They are found across the Indo-Pacific, and can best be identified to the species level by the colour patterns they display. Members of the family Tetraliidae were previously in... | Biology and health sciences | Crabs and hermit crabs | Animals |
4984440 | https://en.wikipedia.org/wiki/Orange%20%28fruit%29 | Orange (fruit) | The orange, also called sweet orange to distinguish it from the bitter orange (Citrus × aurantium), is the fruit of a tree in the family Rutaceae. Botanically, this is the hybrid Citrus × sinensis, between the pomelo (Citrus maxima) and the mandarin orange (Citrus reticulata). The chloroplast genome, and therefore the ... | Biology and health sciences | Sapindales | null |
4984756 | https://en.wikipedia.org/wiki/Coordination%20sphere | Coordination sphere | In coordination chemistry, the first coordination sphere refers to the array of molecules and ions (the ligands) directly attached to the central metal atom. The second coordination sphere consists of molecules and ions that attached in various ways to the first coordination sphere.
First coordination sphere
The first... | Physical sciences | Bond structure | Chemistry |
25512250 | https://en.wikipedia.org/wiki/Truth%20table | Truth table | A truth table is a mathematical table used in logic—specifically in connection with Boolean algebra, Boolean functions, and propositional calculus—which sets out the functional values of logical expressions on each of their functional arguments, that is, for each combination of values taken by their logical variables. ... | Mathematics | Mathematical logic | null |
21137621 | https://en.wikipedia.org/wiki/Mamenchisauridae | Mamenchisauridae | Mamenchisauridae is a family of sauropod dinosaurs belonging to Eusauropoda known from the Jurassic and Early Cretaceous of Asia and Africa. Some members of the group reached gigantic sizes, amongst the largest of all sauropods.
Classification
The family Mamenchisauridae was first erected by Chinese paleontologists Ya... | Biology and health sciences | Sauropods | Animals |
299939 | https://en.wikipedia.org/wiki/Cyperaceae | Cyperaceae | The Cyperaceae () are a family of graminoid (grass-like), monocotyledonous flowering plants known as sedges. The family is large; botanists have described some 5,500 known species in about 90 generathe largest being the "true sedges" (genus Carex), with over 2,000 species.
Distribution
Cyperaceae species are widely... | Biology and health sciences | Poales | null |
299971 | https://en.wikipedia.org/wiki/Sedative | Sedative | A sedative or tranquilliser is a substance that induces sedation by reducing irritability or excitement. They are CNS depressants and interact with brain activity causing its deceleration. Various kinds of sedatives can be distinguished, but the majority of them affect the neurotransmitter gamma-aminobutyric acid (GABA... | Biology and health sciences | General concepts_2 | Health |
300026 | https://en.wikipedia.org/wiki/Stream%20bed | Stream bed | A streambed or stream bed is the bottom of a stream or river (bathymetry) and is confined within a channel, or the banks of the waterway. Usually, the bed does not contain terrestrial (land) vegetation and instead supports different types of aquatic vegetation (aquatic plant), depending on the type of streambed materia... | Physical sciences | Fluvial landforms | Earth science |
300044 | https://en.wikipedia.org/wiki/Brucite | Brucite | Brucite is the mineral form of magnesium hydroxide, with the chemical formula Mg(OH)2. It is a common alteration product of periclase in marble; a low-temperature hydrothermal vein mineral in metamorphosed limestones and chlorite schists; and formed during serpentinization of dunites. Brucite is often found in associat... | Physical sciences | Minerals | Earth science |
300064 | https://en.wikipedia.org/wiki/Minke%20whale | Minke whale | The minke whale (), or lesser rorqual, is a species complex of baleen whale. The two species of minke whale are the common (or northern) minke whale and the Antarctic (or southern) minke whale. The minke whale was first described by the Danish naturalist Otto Fabricius in 1780, who assumed it must be an already known s... | Biology and health sciences | Baleen whales | Animals |
300082 | https://en.wikipedia.org/wiki/Anechoic%20chamber | Anechoic chamber | An anechoic chamber (an-echoic meaning "non-reflective" or "without echoes") is a room designed to stop reflections or echoes of either sound or electromagnetic waves. They are also often isolated from energy entering from their surroundings. This combination means that a person or detector exclusively hears direct so... | Physical sciences | Research methods | Basics and measurement |
300221 | https://en.wikipedia.org/wiki/Testicular%20cancer | Testicular cancer | Testicular cancer is cancer that develops in the testicles, a part of the male reproductive system. Symptoms may include a lump in the testicle or swelling or pain in the scrotum. Treatment may result in infertility.
Risk factors include an undescended testis, family history of the disease, and previous history of tes... | Biology and health sciences | Cancer | Health |
300295 | https://en.wikipedia.org/wiki/Dichloromethane | Dichloromethane | Dichloromethane (DCM, methylene chloride, or methylene bichloride) is an organochlorine compound with the formula . This colorless, volatile liquid with a chloroform-like, sweet odor is widely used as a solvent. Although it is not miscible with water, it is slightly polar, and miscible with many organic solvents.
Occu... | Physical sciences | Halocarbons | Chemistry |
300321 | https://en.wikipedia.org/wiki/Chloromethane | Chloromethane | Chloromethane, also called methyl chloride, Refrigerant-40, R-40 or HCC 40, is an organic compound with the chemical formula . One of the haloalkanes, it is a colorless, sweet-smelling, flammable gas. Methyl chloride is a crucial reagent in industrial chemistry, although it is rarely present in consumer products, and w... | Physical sciences | Halocarbons | Chemistry |
300381 | https://en.wikipedia.org/wiki/Smooth%20muscle | Smooth muscle | Smooth muscle is one of the three major types of vertebrate muscle tissue, the others being skeletal and cardiac muscle. It can also be found in invertebrates and is controlled by the autonomic nervous system. It is non-striated, so-called because it has no sarcomeres and therefore no striations (bands or stripes). It ... | Biology and health sciences | Muscular system | Biology |
300539 | https://en.wikipedia.org/wiki/Varicella%20zoster%20virus | Varicella zoster virus | Varicella zoster virus (VZV), also known as human herpesvirus 3 (HHV-3, HHV3) or Human alphaherpesvirus 3 (taxonomically), is one of nine known herpes viruses that can infect humans. It causes chickenpox (varicella) commonly affecting children and young adults, and shingles (herpes zoster) in adults but rarely in child... | Biology and health sciences | Specific viruses | Health |
300567 | https://en.wikipedia.org/wiki/Hidden%20camera | Hidden camera | A hidden camera or spy camera is a camera used to photograph or record subjects, often people, without their knowledge. The camera may be considered "hidden" because it is not visible to the subject being filmed, or is disguised as another object. Hidden cameras are often considered a surveillance tool.
The term "hidd... | Technology | Photography | null |
300628 | https://en.wikipedia.org/wiki/Vegetative%20state | Vegetative state | A vegetative state (VS) or post-coma unresponsiveness (PCU) is a disorder of consciousness in which patients with severe brain damage are in a state of partial arousal rather than true awareness. After four weeks in a vegetative state, the patient is classified as being in a persistent vegetative state (PVS). This dia... | Biology and health sciences | Miscellaneous | null |
300659 | https://en.wikipedia.org/wiki/Midnight%20sun | Midnight sun | Midnight sun, also known as polar day, is a natural phenomenon that occurs in the summer months in places north of the Arctic Circle or south of the Antarctic Circle, when the Sun remains visible at the local midnight. When midnight sun is seen in the Arctic, the Sun appears to move from left to right. In Antarctica, t... | Physical sciences | Celestial mechanics | Astronomy |
300664 | https://en.wikipedia.org/wiki/Theropoda | Theropoda | Theropoda (; from ancient Greek [, (therion) "wild beast"; , (pous, podos) "foot"]), whose members are known as theropods, is an extant dinosaur clade that is characterized by hollow bones and three toes and claws on each limb. Theropods are generally classed as a group of saurischian dinosaurs. They were ancestrall... | Biology and health sciences | Theropods | Animals |
300898 | https://en.wikipedia.org/wiki/Scallop | Scallop | Scallop () is a common name that encompasses various species of marine bivalve mollusks in the taxonomic family Pectinidae, the scallops. However, the common name "scallop" is also sometimes applied to species in other closely related families within the superfamily Pectinoidea, which also includes the thorny oysters.
... | Biology and health sciences | Mollusks | null |
301024 | https://en.wikipedia.org/wiki/Silphium | Silphium | Silphium (also known as laserwort or laser; Ancient Greek: , ) is an unidentified plant that was used in classical antiquity as a seasoning, perfume, aphrodisiac, and medicine.
It was the essential item of trade from the ancient North African city of Cyrene, and was so critical to the Cyrenian economy that most of the... | Biology and health sciences | Herbs and spices | Plants |
301108 | https://en.wikipedia.org/wiki/Pan-American%20Highway | Pan-American Highway | The Pan-American Highway is a vast network of roads that stretches approximately 30,000 kilometers (about 19,000 miles) from Prudhoe Bay, Alaska, in the northernmost part of North America to Ushuaia, Argentina, at the southern tip of South America. It is recognized as the longest road in the world and serves as a signi... | Technology | Ground transportation networks | null |
301394 | https://en.wikipedia.org/wiki/Piranha | Piranha | A piranha or piraña (, or ; , ) is any of a number of freshwater fish species in the family Serrasalmidae, or the subfamily Serrasalminae within the tetra family, Characidae in order Characiformes. These fish inhabit South American rivers, floodplains, lakes and reservoirs. Although often described as extremely predat... | Biology and health sciences | Characiformes | null |
301647 | https://en.wikipedia.org/wiki/Barrier%20island | Barrier island | Barrier islands are a coastal landform, a type of dune system and sand island, where an area of sand has been formed by wave and tidal action parallel to the mainland coast. They usually occur in chains, consisting of anything from a few islands to more than a dozen. They are subject to change during storms and other a... | Physical sciences | Oceanic and coastal landforms | Earth science |
301664 | https://en.wikipedia.org/wiki/Watercraft | Watercraft | A watercraft or waterborne vessel is any vehicle designed for travel across or through water bodies, such as a boat, ship, hovercraft, submersible or submarine.
Types
Historically, watercraft have been divided into two main categories.
Rafts, which gain their buoyancy from the fastening together of components that ar... | Technology | Naval transport | null |
301728 | https://en.wikipedia.org/wiki/IRAS | IRAS | The Infrared Astronomical Satellite (Dutch: Infrarood Astronomische Satelliet) (IRAS) was the first space telescope to perform a survey of the entire night sky at infrared wavelengths. Launched on 25 January 1983, its mission lasted ten months. The telescope was a joint project of the United States (NASA), the Netherla... | Technology | Space-based observatories | null |
301737 | https://en.wikipedia.org/wiki/Right%20whale | Right whale | Right whales are three species of large baleen whales of the genus Eubalaena: the North Atlantic right whale (E. glacialis), the North Pacific right whale (E. japonica) and the Southern right whale (E. australis). They are classified in the family Balaenidae with the bowhead whale. Right whales have rotund bodies with ... | Biology and health sciences | Baleen whales | Animals |
301743 | https://en.wikipedia.org/wiki/Southern%20right%20whale | Southern right whale | The southern right whale (Eubalaena australis) is a baleen whale, one of three species classified as right whales belonging to the genus Eubalaena. Southern right whales inhabit oceans south of the Equator, between the latitudes of 20° and 60° south. In 2009 the global population was estimated to be approximately 13,60... | Biology and health sciences | Baleen whales | Animals |
302358 | https://en.wikipedia.org/wiki/Potassium%20chlorate | Potassium chlorate | Potassium chlorate is the inorganic compound with the molecular formula KClO3. In its pure form, it is a white solid. After sodium chlorate, it is the second most common chlorate in industrial use. It is a strong oxidizing agent and its most important application is in safety matches. In other applications it is mostly... | Physical sciences | Halide oxyanions | Chemistry |
302454 | https://en.wikipedia.org/wiki/Mesothelioma | Mesothelioma | Mesothelioma is a type of cancer that develops from the thin layer of tissue that covers many of the internal organs (known as the mesothelium). The area most commonly affected is the lining of the lungs and chest wall. Less commonly the lining of the abdomen and rarely the sac surrounding the heart, or the sac surroun... | Biology and health sciences | Cancer | Health |
302598 | https://en.wikipedia.org/wiki/Vombatiformes | Vombatiformes | The Vombatiformes are one of the three suborders of the large marsupial order Diprotodontia. Seven of the nine known families within this suborder are extinct; only the families Phascolarctidae, with the koala, and Vombatidae, with three extant species of wombat, survive.
Among the extinct families are the Diprotodont... | Biology and health sciences | Diprotodontia | Animals |
302776 | https://en.wikipedia.org/wiki/Float%20glass | Float glass | Float glass is a sheet of glass made by floating molten glass on a bed of molten metal of a low melting point, typically tin, although lead was used for the process in the past. This method gives the sheet uniform thickness and a very flat surface. The float glass process is also known as the Pilkington process, named ... | Technology | Materials | null |
302812 | https://en.wikipedia.org/wiki/Color%20vision | Color vision | Color vision, a feature of visual perception, is an ability to perceive differences between light composed of different frequencies independently of light intensity.
Color perception is a part of the larger visual system and is mediated by a complex process between neurons that begins with differential stimulation of ... | Biology and health sciences | Nervous system | null |
28642445 | https://en.wikipedia.org/wiki/Balaur%20bondoc | Balaur bondoc | Balaur bondoc is a species of paravian theropod dinosaur from the late Cretaceous period, in what is now Romania. It is the type species of the monotypic genus Balaur, after the balaur (), a dragon of Romanian folklore. The specific name bondoc () means "stocky", so Balaur bondoc means "stocky dragon" in Romanian. This... | Biology and health sciences | Prehistoric birds | Animals |
18859466 | https://en.wikipedia.org/wiki/Headland | Headland | A headland, also known as a head, is a coastal landform, a point of land usually high and often with a sheer drop, that extends into a body of water. It is a type of promontory. A headland of considerable size often is called a cape. Headlands are characterised by high, breaking waves, rocky shores, intense erosion, an... | Physical sciences | Oceanic and coastal landforms | Earth science |
515758 | https://en.wikipedia.org/wiki/Fungicide | Fungicide | Fungicides are pesticides used to kill parasitic fungi or their spores. Fungi can cause serious damage in agriculture, resulting in losses of yield and quality. Fungicides are used both in agriculture and to fight fungal infections in animals. Fungicides are also used to control oomycetes, which are not taxonomically/... | Technology | Pest and disease control | null |
515933 | https://en.wikipedia.org/wiki/Charles%20Bridge | Charles Bridge | Charles Bridge ( ) is a medieval stone arch bridge that crosses the Vltava river in Prague, Czech Republic. Its construction started in 1357 under the auspices of King Charles IV, and finished in the early 15th century. The bridge replaced the old Judith Bridge built 1158–1172 that had been severely damaged by a flood ... | Technology | Bridges | null |
516133 | https://en.wikipedia.org/wiki/Equipartition%20theorem | Equipartition theorem | In classical statistical mechanics, the equipartition theorem relates the temperature of a system to its average energies. The equipartition theorem is also known as the law of equipartition, equipartition of energy, or simply equipartition. The original idea of equipartition was that, in thermal equilibrium, energy is... | Physical sciences | Thermodynamics | Physics |
516150 | https://en.wikipedia.org/wiki/Transverse%20mode | Transverse mode | A transverse mode of electromagnetic radiation is a particular electromagnetic field pattern of the radiation in the plane perpendicular (i.e., transverse) to the radiation's propagation direction. Transverse modes occur in radio waves and microwaves confined to a waveguide, and also in light waves in an optical fiber ... | Physical sciences | Electromagnetic radiation | Physics |
516352 | https://en.wikipedia.org/wiki/Nazca%20plate | Nazca plate | The Nazca plate or Nasca plate, named after the Nazca region of southern Peru, is an oceanic tectonic plate in the eastern Pacific Ocean basin off the west coast of South America. The ongoing subduction, along the Peru–Chile Trench, of the Nazca plate under the South American plate is largely responsible for the Andean... | Physical sciences | Tectonic plates | Earth science |
516680 | https://en.wikipedia.org/wiki/Excited%20state | Excited state | In quantum mechanics, an excited state of a system (such as an atom, molecule or nucleus) is any quantum state of the system that has a higher energy than the ground state (that is, more energy than the absolute minimum). Excitation refers to an increase in energy level above a chosen starting point, usually the ground... | Physical sciences | Quantum mechanics | Physics |
516931 | https://en.wikipedia.org/wiki/Map%20%28mathematics%29 | Map (mathematics) | In mathematics, a map or mapping is a function in its general sense. These terms may have originated as from the process of making a geographical map: mapping the Earth surface to a sheet of paper.
The term map may be used to distinguish some special types of functions, such as homomorphisms. For example, a linear ma... | Mathematics | Functions: General | null |
517018 | https://en.wikipedia.org/wiki/Cercozoa | Cercozoa | Cercozoa (now synonymised with Filosa) is a phylum of diverse single-celled eukaryotes. They lack shared morphological characteristics at the microscopic level, and are instead united by molecular phylogenies of rRNA and actin or polyubiquitin. They were the first major eukaryotic group to be recognized mainly through ... | Biology and health sciences | SAR supergroup | Plants |
517253 | https://en.wikipedia.org/wiki/European%20long-distance%20paths | European long-distance paths | The European long-distance paths (E-paths) are a network of long-distance footpaths that traverse Europe. While most long-distance footpaths in Europe are located in just one country or region, each of these numbered European long-distance paths passes through many countries.
The first long-distance hiking trail in Eu... | Technology | Ground transportation networks | null |
517512 | https://en.wikipedia.org/wiki/Draft%20horse | Draft horse | A draft horse (US) or draught horse (UK), also known as dray horse, carthorse, work horse or heavy horse, is a large horse bred to be a working animal hauling freight and doing heavy agricultural tasks such as plowing. There are a number of breeds, with varying characteristics, but all share common traits of strength, ... | Technology | Agriculture, labor and economy | null |
517682 | https://en.wikipedia.org/wiki/Zero-dimensional%20space | Zero-dimensional space | In mathematics, a zero-dimensional topological space (or nildimensional space) is a topological space that has dimension zero with respect to one of several inequivalent notions of assigning a dimension to a given topological space. A graphical illustration of a zero-dimensional space is a point.
Definition
Specifica... | Mathematics | Geometry: General | null |
518211 | https://en.wikipedia.org/wiki/Cloaca | Cloaca | A cloaca ( ), : cloacae ( or ), or vent, is the rear orifice that serves as the only opening for the digestive (rectum), reproductive, and urinary tracts (if present) of many vertebrate animals. All amphibians, reptiles, birds, and a few mammals (monotremes, afrosoricids, and marsupial moles, etc.) have this orifice,... | Biology and health sciences | Gastrointestinal tract | Biology |
518397 | https://en.wikipedia.org/wiki/Angle%20of%20repose | Angle of repose | The angle of repose, or critical angle of repose, of a granular material is the steepest angle of descent or dip relative to the horizontal plane on which the material can be piled without slumping. At this angle, the material on the slope face is on the verge of sliding. The angle of repose can range from 0° to 90°. ... | Physical sciences | Soil mechanics | Physics |
518441 | https://en.wikipedia.org/wiki/Mongrel | Mongrel | A mongrel, mutt, or mixed-breed dog is a dog that does not belong to one officially recognized breed, including those that result from intentional breeding. Although the term mixed-breed dog is sometimes preferred, many mongrels have no known purebred ancestors.
Crossbreed dogs, and "designer dogs", while also a mix ... | Biology and health sciences | Dogs | Animals |
518489 | https://en.wikipedia.org/wiki/Amoebozoa | Amoebozoa | Amoebozoa is a major taxonomic group containing about 2,400 described species of amoeboid protists, often possessing blunt, fingerlike, lobose pseudopods and tubular mitochondrial cristae. In traditional classification schemes, Amoebozoa is usually ranked as a phylum within either the kingdom Protista or the kingdom Pr... | Biology and health sciences | Other organisms | null |
518513 | https://en.wikipedia.org/wiki/Thermogenesis | Thermogenesis | Thermogenesis is the process of heat production in organisms. It occurs in all warm-blooded animals, and also in a few species of thermogenic plants such as the Eastern skunk cabbage, the Voodoo lily (Sauromatum venosum), and the giant water lilies of the genus Victoria. The lodgepole pine dwarf mistletoe, Arceuthobiu... | Biology and health sciences | Basics | Biology |
518692 | https://en.wikipedia.org/wiki/Faraday%20effect | Faraday effect | The Faraday effect or Faraday rotation, sometimes referred to as the magneto-optic Faraday effect (MOFE), is a physical magneto-optical phenomenon. The Faraday effect causes a polarization rotation which is proportional to the projection of the magnetic field along the direction of the light propagation. Formally, it i... | Physical sciences | Electromagnetic radiation | Physics |
518791 | https://en.wikipedia.org/wiki/Racemization | Racemization | In chemistry, racemization is a conversion, by heat or by chemical reaction, of an optically active compound into a racemic (optically inactive) form. This creates a 1:1 molar ratio of enantiomers and is referred to as a racemic mixture (i.e. contain equal amount of (+) and (−) forms). Plus and minus forms are called D... | Physical sciences | Stereochemistry | Chemistry |
518913 | https://en.wikipedia.org/wiki/Longhorn%20beetle | Longhorn beetle | The longhorn beetles (Cerambycidae), also known as long-horned or longicorns (whose larvae are often referred to as roundheaded borers), are a large family of beetles, with over 35,000 species described.
Most species are characterized by antennae as long as or longer than the beetle's body. A few species have short a... | Biology and health sciences | Beetles (Coleoptera) | Animals |
518971 | https://en.wikipedia.org/wiki/Vigna%20mungo | Vigna mungo | The black gram or urad bean (Vigna mungo) is a bean grown in South Asia. Like its relative, the mung bean, it has been reclassified from the Phaseolus to the Vigna genus. The product sold as black gram is usually the whole urad bean, whereas the split bean (the interior being white) is called white lentil. It should no... | Biology and health sciences | Pulses | Plants |
518989 | https://en.wikipedia.org/wiki/Glia | Glia | Glia, also called glial cells (gliocytes) or neuroglia, are non-neuronal cells in the central nervous system (the brain and the spinal cord) and in the peripheral nervous system that do not produce electrical impulses. The neuroglia make up more than one half the volume of neural tissue in the human body. They maintain... | Biology and health sciences | Nervous system | Biology |
518999 | https://en.wikipedia.org/wiki/European%20badger | European badger | The European badger (Meles meles), also known as the Eurasian badger, is a badger species in the family Mustelidae native to Europe and West Asia and parts of Central Asia. It is classified as least concern on the IUCN Red List, as it has a wide range and a large, stable population size which is thought to be increasin... | Biology and health sciences | Carnivora | null |
519182 | https://en.wikipedia.org/wiki/Projection%20%28linear%20algebra%29 | Projection (linear algebra) | In linear algebra and functional analysis, a projection is a linear transformation from a vector space to itself (an endomorphism) such that . That is, whenever is applied twice to any vector, it gives the same result as if it were applied once (i.e. is idempotent). It leaves its image unchanged. This definition of ... | Mathematics | Linear algebra | null |
519280 | https://en.wikipedia.org/wiki/Intelligence | Intelligence | Intelligence has been defined in many ways: the capacity for abstraction, logic, understanding, self-awareness, learning, emotional knowledge, reasoning, planning, creativity, critical thinking, and problem-solving. It can be described as the ability to perceive or infer information; and to retain it as knowledge to be... | Biology and health sciences | Psychology | null |
8521120 | https://en.wikipedia.org/wiki/Winter%20solstice | Winter solstice | The winter solstice, or hibernal solstice, occurs when either of Earth's poles reaches its maximum tilt away from the Sun. This happens twice yearly, once in each hemisphere (Northern and Southern). For that hemisphere, the winter solstice is the day with the shortest period of daylight and longest night of the year, a... | Physical sciences | Celestial sphere: General | Astronomy |
8526433 | https://en.wikipedia.org/wiki/Substrate%20%28chemistry%29 | Substrate (chemistry) | In chemistry, the term substrate is highly context-dependent. Broadly speaking, it can refer either to a chemical species being observed in a chemical reaction, or to a surface on which other chemical reactions or microscopy are performed.
In the former sense, a reagent is added to the substrate to generate a product ... | Physical sciences | Reaction | Chemistry |
6554225 | https://en.wikipedia.org/wiki/Eris%20%28dwarf%20planet%29 | Eris (dwarf planet) | Eris (minor-planet designation: 136199 Eris) is the most massive and second-largest known dwarf planet in the Solar System. It is a trans-Neptunian object (TNO) in the scattered disk and has a high-eccentricity orbit. Eris was discovered in January 2005 by a Palomar Observatory–based team led by Mike Brown and verified... | Physical sciences | Solar System | null |
3680464 | https://en.wikipedia.org/wiki/Chemical%20law | Chemical law | Chemical laws are those laws of nature relevant to chemistry. The most fundamental concept in chemistry is the law of conservation of mass, which states that there is no detectable change in the quantity of matter during an ordinary chemical reaction. Modern physics shows that it is actually energy that is conserved, ... | Physical sciences | Basics: General | Chemistry |
866988 | https://en.wikipedia.org/wiki/Refractive%20error | Refractive error | Refractive error is a problem with focusing light accurately on the retina due to the shape of the eye and/or cornea. The most common types of refractive error are near-sightedness, far-sightedness, astigmatism, and presbyopia. Near-sightedness results in far away objects being blurry, far-sightedness and presbyopia re... | Biology and health sciences | Disabilities | Health |
867089 | https://en.wikipedia.org/wiki/Galinstan | Galinstan | Galinstan is a brand name for an alloy composed of gallium, indium, and tin which melts at and is thus liquid at room temperature. In scientific literature, galinstan is also used to denote the eutectic alloy of gallium, indium, and tin, which melts at around . The commercial product Galinstan is not a eutectic alloy,... | Physical sciences | Specific alloys | Chemistry |
867542 | https://en.wikipedia.org/wiki/Topical%20medication | Topical medication | A topical medication is a medication that is applied to a particular place on or in the body. Most often topical medication means application to body surfaces such as the skin or mucous membranes to treat ailments via a large range of classes including creams, foams, gels, lotions, and ointments. Many topical medicati... | Biology and health sciences | General concepts_2 | Health |
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