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|---|---|---|---|---|---|---|
155,650 | https://en.wikipedia.org/wiki/Fluoride | Fluoride () is an inorganic, monatomic anion of fluorine, with the chemical formula (also written ), whose salts are typically white or colorless. Fluoride salts typically have distinctive bitter tastes, and are odorless. Its salts and minerals are important chemical reagents and industrial chemicals, mainly used in t... | Fluoride | [
"Physics",
"Chemistry",
"Biology"
] | 4,104 | [
"Pharmacology",
"Matter",
"Properties of chemical elements",
"Anions",
"Biology and pharmacology of chemical elements",
"Salts",
"Biochemistry",
"Fluorides",
"Ions"
] |
155,710 | https://en.wikipedia.org/wiki/Peer%20pressure | Peer pressure is a direct or indirect influence on peers, i.e., members of social groups with similar interests and experiences, or social statuses. Members of a peer group are more likely to influence a person's beliefs, values, religion and behavior. A group or individual may be encouraged and want to follow their pe... | Peer pressure | [
"Biology"
] | 8,964 | [
"Behavior",
"Conformity",
"Human behavior"
] |
155,715 | https://en.wikipedia.org/wiki/Pyroelectricity | Pyroelectricity (from Greek: pyr (πυρ), "fire" and electricity) is a property of certain crystals which are naturally electrically polarized and as a result contain large electric fields. Pyroelectricity can be described as the ability of certain materials to generate a temporary voltage when they are heated or cooled.... | Pyroelectricity | [
"Physics",
"Chemistry",
"Materials_science",
"Mathematics"
] | 2,581 | [
"Physical phenomena",
"Crystallography",
"Electrical phenomena",
"Crystals",
"Thermodynamics",
"Dynamical systems"
] |
155,725 | https://en.wikipedia.org/wiki/Sodium%20bicarbonate | Sodium bicarbonate (IUPAC name: sodium hydrogencarbonate), commonly known as baking soda or bicarbonate of soda, is a chemical compound with the formula NaHCO3. It is a salt composed of a sodium cation (Na+) and a bicarbonate anion (HCO3−). Sodium bicarbonate is a white solid that is crystalline but often appears as a ... | Sodium bicarbonate | [
"Physics",
"Chemistry"
] | 4,536 | [
"Acid salts",
"Chemical substances for emergency medicine",
"Salts",
"Materials",
"Powders",
"Chemicals in medicine",
"Bases (chemistry)",
"Matter"
] |
155,726 | https://en.wikipedia.org/wiki/Sodium%20carbonate | Sodium carbonate (also known as washing soda, soda ash and soda crystals) is the inorganic compound with the formula and its various hydrates. All forms are white, odourless, water-soluble salts that yield alkaline solutions in water. Historically, it was extracted from the ashes of plants grown in sodium-rich soils, ... | Sodium carbonate | [
"Chemistry"
] | 3,317 | [
"Combustion",
"Types of ash"
] |
155,747 | https://en.wikipedia.org/wiki/Travel | Travel is the movement of people between distant geographical locations. Travel can be done by foot, bicycle, automobile, train, boat, bus, airplane, ship or other means, with or without luggage, and can be one way or round trip. Travel can also include relatively short stays between successive movements, as in the cas... | Travel | [
"Physics"
] | 1,279 | [
"Physical systems",
"Transport",
"Transport culture",
"Travel"
] |
155,758 | https://en.wikipedia.org/wiki/Gravity%20assist | A gravity assist, gravity assist maneuver, swing-by, or generally a gravitational slingshot in orbital mechanics, is a type of spaceflight flyby which makes use of the relative movement (e.g. orbit around the Sun) and gravity of a planet or other astronomical object to alter the path and speed of a spacecraft, typical... | Gravity assist | [
"Engineering"
] | 4,356 | [
"Astrodynamics",
"Aerospace engineering"
] |
155,760 | https://en.wikipedia.org/wiki/Hohmann%20transfer%20orbit | In astronautics, the Hohmann transfer orbit () is an orbital maneuver used to transfer a spacecraft between two orbits of different altitudes around a central body. For example, a Hohmann transfer could be used to raise a satellite's orbit from low Earth orbit to geostationary orbit. In the idealized case, the initial ... | Hohmann transfer orbit | [
"Engineering"
] | 3,516 | [
"Astrodynamics",
"Aerospace engineering"
] |
155,823 | https://en.wikipedia.org/wiki/Sievert | The sievert (symbol: Sv) is a unit in the International System of Units (SI) intended to represent the stochastic health risk of ionizing radiation, which is defined as the probability of causing radiation-induced cancer and genetic damage. The sievert is important in dosimetry and radiation protection. It is named aft... | Sievert | [
"Physics",
"Chemistry",
"Materials_science",
"Mathematics",
"Biology"
] | 5,398 | [
"Radiation health effects",
"Units of measurement",
"Radiobiology",
"Quantity",
"Units of radioactivity",
"Units of radiation dose",
"Nuclear physics",
"Radiation effects",
"Radioactivity"
] |
155,829 | https://en.wikipedia.org/wiki/Curie%20%28unit%29 | The curie (symbol Ci) is a non-SI unit of radioactivity originally defined in 1910. According to a notice in Nature at the time, it was to be named in honour of Pierre Curie, but was considered at least by some to be in honour of Marie Curie as well, and is in later literature considered to be named for both.
It was o... | Curie (unit) | [
"Physics",
"Chemistry",
"Mathematics"
] | 832 | [
"Non-SI metric units",
"Quantity",
"Units of radioactivity",
"Radioactivity",
"Nuclear physics",
"Units of measurement"
] |
155,835 | https://en.wikipedia.org/wiki/Becquerel | The becquerel (; symbol: Bq) is the unit of radioactivity in the International System of Units (SI). One becquerel is defined as an activity of one per second, on average, for aperiodic activity events referred to a radionuclide. For applications relating to human health this is a small quantity, and SI multiples of th... | Becquerel | [
"Chemistry",
"Mathematics"
] | 939 | [
"Quantity",
"Units of radioactivity",
"Radioactivity",
"Units of frequency",
"Units of measurement"
] |
155,869 | https://en.wikipedia.org/wiki/Lux | The lux (symbol: lx) is the unit of illuminance, or luminous flux per unit area, in the International System of Units (SI). It is equal to one lumen per square metre. In photometry, this is used as a measure of the irradiance, as perceived by the spectrally unequally responding human eye, of light that hits or passes t... | Lux | [
"Mathematics"
] | 1,836 | [
"Quantity",
"Units of illuminance",
"Units of measurement"
] |
155,899 | https://en.wikipedia.org/wiki/Human%20ecology | Human ecology is an interdisciplinary and transdisciplinary study of the relationship between humans and their natural, social, and built environments. The philosophy and study of human ecology has a diffuse history with advancements in ecology, geography, sociology, psychology, anthropology, zoology, epidemiology, pub... | Human ecology | [
"Environmental_science"
] | 5,192 | [
"Human geography",
"Environmental social science",
"Human ecology"
] |
156,089 | https://en.wikipedia.org/wiki/Alexander%20Prokhorov | Alexander Mikhailovich Prokhorov (born Alexander Michael Prochoroff, ; 11 July 1916 – 8 January 2002) was a Russian physicist and researcher on lasers and masers in the former Soviet Union for which he shared the Nobel Prize in Physics in 1964 with Charles Hard Townes and Nikolay Basov.
Early life
Alexander Michael Pr... | Alexander Prokhorov | [
"Physics",
"Chemistry",
"Technology"
] | 2,045 | [
"Physical chemists",
"Spectrum (physical sciences)",
"Analytical chemists",
"Recipients of the Lomonosov Gold Medal",
"Spectroscopists",
"Science and technology awards",
"Spectroscopy"
] |
156,267 | https://en.wikipedia.org/wiki/Cosplay | Cosplay, a blend word of "costume play", is an activity and performance art in which participants called cosplayers wear costumes and fashion accessories to represent a specific character. Cosplayers often interact to create a subculture, and a broader use of the term "cosplay" applies to any costumed role-playing in v... | Cosplay | [
"Engineering"
] | 7,730 | [
"Costume design",
"Design"
] |
156,300 | https://en.wikipedia.org/wiki/Pyrokinesis | Pyrokinesis is a psychic ability allowing a person to create and control fire with the mind. As with other parapsychological phenomena, there is no conclusive evidence in support of the actual existence of pyrokinesis. Many alleged cases are hoaxes; the result of trickery.
Etymology
The word pyrokinesis (from Greek py... | Pyrokinesis | [
"Chemistry"
] | 835 | [
"Combustion",
"Fire"
] |
156,310 | https://en.wikipedia.org/wiki/Radicle | In botany, the radicle is the first part of a seedling (a growing plant embryo) to emerge from the seed during the process of germination. The radicle is the embryonic root of the plant, and grows downward in the soil (the shoot emerges from the plumule). Above the radicle is the embryonic stem or hypocotyl, supporting... | Radicle | [
"Biology"
] | 299 | [
"Plant morphology",
"Plant intelligence",
"Plants"
] |
156,331 | https://en.wikipedia.org/wiki/Thomas%20Gold | Thomas Gold (May 22, 1920 – June 22, 2004) was an Austrian-born astrophysicist, who also held British and American citizenship. He was a professor of astronomy at Cornell University, a member of the U.S. National Academy of Sciences, and a Fellow of the Royal Society (London). Gold was one of three young Cambridge sci... | Thomas Gold | [
"Biology"
] | 8,021 | [
"Biological hypotheses",
"Origin of life",
"Panspermia"
] |
156,339 | https://en.wikipedia.org/wiki/Corporate%20farming | Corporate farming is the practice of large-scale agriculture on farms owned or greatly influenced by large companies. This includes corporate ownership of farms and the sale of agricultural products, as well as the roles of these companies in influencing agricultural education, research, and public policy through fundi... | Corporate farming | [
"Chemistry"
] | 1,930 | [
"Eutrophication",
"Intensive farming"
] |
156,411 | https://en.wikipedia.org/wiki/Galois%20connection | In mathematics, especially in order theory, a Galois connection is a particular correspondence (typically) between two partially ordered sets (posets). Galois connections find applications in various mathematical theories. They generalize the fundamental theorem of Galois theory about the correspondence between subgro... | Galois connection | [
"Mathematics"
] | 4,010 | [
"Order theory",
"Closure operators"
] |
156,428 | https://en.wikipedia.org/wiki/Microtechnology | Microtechnology is technology whose features have dimensions of the order of one micrometre (one millionth of a metre, or 10−6 metre, or 1μm). It focuses on physical and chemical processes as well as the production or manipulation of structures with one-micrometre magnitude.
Development
Around 1970, scientists learne... | Microtechnology | [
"Materials_science",
"Engineering"
] | 978 | [
"Nanotechnology",
"Semiconductor device fabrication",
"Materials science",
"Microtechnology"
] |
156,431 | https://en.wikipedia.org/wiki/M%C3%BCller-Lyer%20illusion | The Müller-Lyer illusion is an optical illusion consisting of three stylized arrows. When viewers are asked to place a mark on the figure at the midpoint, they tend to place it more towards the "tail" end. The illusion was devised by Franz Carl Müller-Lyer (1857–1916), a German sociologist, in 1889.
A variation of the... | Müller-Lyer illusion | [
"Physics"
] | 1,645 | [
"Optical phenomena",
"Physical phenomena",
"Optical illusions"
] |
10,730,655 | https://en.wikipedia.org/wiki/NGC%20265 | NGC 265 is an open cluster of stars in the southern constellation of Tucana. It is located in the Small Magellanic Cloud, a nearby dwarf galaxy. The cluster was discovered by English astronomer John Herschel on April 11, 1834. J. L. E. Dreyer described it as, "faint, pretty small, round", and added it as the 265th entr... | NGC 265 | [
"Astronomy"
] | 246 | [
"Tucana",
"Constellations"
] |
10,730,840 | https://en.wikipedia.org/wiki/Light%20echo | A light echo is a physical phenomenon caused by light reflected off surfaces distant from the source, and arriving at the observer with a delay relative to this distance. The phenomenon is analogous to an echo of sound, but due to the much faster speed of light, it mostly manifests itself only over astronomical distanc... | Light echo | [
"Astronomy"
] | 1,710 | [
"Astronomical events"
] |
10,731,502 | https://en.wikipedia.org/wiki/Honeycomb%20structure | Honeycomb structures are natural or man-made structures that have the geometry of a honeycomb to allow the minimization of the amount of used material to reach minimal weight and minimal material cost. The geometry of honeycomb structures can vary widely but the common feature of all such structures is an array of holl... | Honeycomb structure | [
"Physics",
"Engineering"
] | 2,923 | [
"Buildings and structures by type",
"Aerospace materials",
"Composite materials",
"Materials",
"Aerospace engineering",
"Matter",
"Architecture"
] |
10,732,685 | https://en.wikipedia.org/wiki/Phenylalanine%20racemase%20%28ATP-hydrolysing%29 | The enzyme phenylalanine racemase (, phenylalanine racemase, phenylalanine racemase (adenosine triphosphate-hydrolysing), gramicidin S synthetase I) is the enzyme that acts on amino acids and derivatives. It activates both the L & D stereo isomers of phenylalanine to form L-phenylalanyl adenylate and D-phenylalanyl ade... | Phenylalanine racemase (ATP-hydrolysing) | [
"Chemistry",
"Biology"
] | 533 | [
"Biochemistry",
"Metabolism",
"Cellular processes"
] |
10,733,441 | https://en.wikipedia.org/wiki/Tyrosol | Tyrosol is an organic compound with the formula . Classified as a phenylethanoid, a derivative of phenethyl alcohol, it is found in a variety of natural sources. The compound is colorless solid. The principal source in the human diet is olive oil.
Research
As an antioxidant, tyrosol may protect cells against injury d... | Tyrosol | [
"Chemistry"
] | 286 | [
"Biomolecules by chemical classification",
"Phenylethanoids"
] |
10,733,467 | https://en.wikipedia.org/wiki/Central%20Equipment%20Identity%20Register | A Central Equipment Identity Register (CEIR) is a database of mobile equipment identifiers (IMEI – for networks of GSM standard, MEID – for networks of CDMA standard). Such an identifier is assigned to each SIM slot of the mobile device. Different kinds o IMEIs could be, White, for devices that are allowed to register ... | Central Equipment Identity Register | [
"Technology",
"Engineering"
] | 1,489 | [
"Mobile security",
"Cybersecurity engineering",
"Wireless",
"Telecommunications engineering"
] |
10,735,807 | https://en.wikipedia.org/wiki/Joyce%20Kilmer-Slickrock%20Wilderness | Joyce Kilmer-Slickrock Wilderness, created in 1975, covers in the Nantahala National Forest in western North Carolina and the Cherokee National Forest in eastern Tennessee, in the watersheds of the Slickrock and Little Santeetlah Creeks. It is named after Joyce Kilmer, author of "Trees." The Little Santeetlah and Slic... | Joyce Kilmer-Slickrock Wilderness | [
"Biology"
] | 602 | [
"Old-growth forests",
"Ecosystems"
] |
10,736,521 | https://en.wikipedia.org/wiki/Succinylmonocholine | Succinylmonocholine is an ester of succinic acid and choline created by the metabolism of suxamethonium chloride.
See also
Succinic acid
Choline
References
Choline esters
Carboxylic acids
Quaternary ammonium compounds | Succinylmonocholine | [
"Chemistry"
] | 57 | [
"Carboxylic acids",
"Functional groups"
] |
10,737,185 | https://en.wikipedia.org/wiki/Preservation%20of%20magnetic%20audiotape | Preservation of magnetic audiotape comprises techniques for handling, cleaning and storage of magnetic audiotapes in an archival repository. Multiple types of magnetic media exist but are mainly in the form of open reels or enclosed cassettes. Although digitization of materials on fragile magnetic media in library and ... | Preservation of magnetic audiotape | [
"Technology"
] | 1,606 | [
"Recording devices",
"Tape recording"
] |
10,737,493 | https://en.wikipedia.org/wiki/Benjamin%20Kendall%20Emerson | Benjamin Kendall Emerson (December 20, 1843 – April 7, 1932) was an American geologist and author.
Biography
Emerson attended Amherst College, where he joined the Alpha Delta Phi fraternity and from which he graduated in 1865 as valedictorian. He went on to study in Germany at the University of Berlin, and received h... | Benjamin Kendall Emerson | [
"Chemistry"
] | 653 | [
"Periodic table",
"People involved with the periodic table"
] |
10,737,671 | https://en.wikipedia.org/wiki/Gaussian%20vault | The Gaussian vault is a reinforced masonry construction technique invented by Uruguayan engineer Eladio Dieste to efficiently and economically build thin-shell barrel vaults and wide curved roof spans that are resistant to buckling.
Gaussian vaults consist of a series of interlocking, curved, single-layer brick arches... | Gaussian vault | [
"Technology",
"Engineering"
] | 1,361 | [
"Structural engineering",
"Building engineering",
"Structural system",
"Construction",
"Civil engineering",
"Ceilings",
"Masonry",
"Architecture"
] |
10,737,785 | https://en.wikipedia.org/wiki/Floating%20nuclear%20power%20plant | A floating nuclear power plant is a floating power station that derives its energy from a nuclear reactor. Instead of a stationary complex on land, they consist of a floating structure such as an offshore platform, barge or conventional ship.
Since the reactors employed are smaller in size and power than most commerci... | Floating nuclear power plant | [
"Physics"
] | 526 | [
"Power (physics)",
"Physical quantities",
"Nuclear power"
] |
10,738,834 | https://en.wikipedia.org/wiki/Fatou%27s%20theorem | In mathematics, specifically in complex analysis, Fatou's theorem, named after Pierre Fatou, is a statement concerning holomorphic functions on the unit disk and their pointwise extension to the boundary of the disk.
Motivation and statement of theorem
If we have a holomorphic function defined on the open unit disk ... | Fatou's theorem | [
"Mathematics"
] | 631 | [
"Theorems in mathematical analysis",
"Theorems in complex analysis"
] |
10,739,089 | https://en.wikipedia.org/wiki/Sex%20pheromone | Sex pheromones are pheromones released by an organism to attract an individual of the same species, encourage them to mate with them, or perform some other function closely related with sexual reproduction.
Sex pheromones specifically focus on indicating females for breeding, attracting the opposite sex, and conveying ... | Sex pheromone | [
"Chemistry",
"Biology"
] | 1,272 | [
"Behavior",
"Chemical ecology",
"Reproduction",
"Pheromones",
"Sexual reproduction",
"Biochemistry",
"Sexuality"
] |
10,739,141 | https://en.wikipedia.org/wiki/Trace%20monoid | In computer science, a trace is an equivalence class of strings, wherein certain letters in the string are allowed to commute, but others are not. Traces generalize the concept of strings by relaxing the requirement for all the letters to have a definite order, instead allowing for indefinite orderings in which certain... | Trace monoid | [
"Mathematics"
] | 1,487 | [
"Discrete mathematics",
"Mathematical structures",
"Formal languages",
"Mathematical logic",
"Combinatorics",
"Fields of abstract algebra",
"Algebraic structures",
"Category theory",
"Semigroup theory",
"Free algebraic structures"
] |
10,739,341 | https://en.wikipedia.org/wiki/Dependency%20relation | In computer science, in particular in concurrency theory, a dependency relation is a binary relation on a finite domain , symmetric, and reflexive; i.e. a finite tolerance relation. That is, it is a finite set of ordered pairs , such that
If then (symmetric)
If , then (reflexive)
In general, dependency relat... | Dependency relation | [
"Mathematics"
] | 379 | [
"Properties of binary relations",
"Mathematical relations",
"Binary relations"
] |
10,739,499 | https://en.wikipedia.org/wiki/Opengear | Opengear is a global computer network technology company headquartered in Edison, New Jersey, U.S., with engineering in Brisbane, Qld, Australia and production in Sandy, UT.
The company develops and manufactures "smart out-of-band infrastructure management" products aimed at allowing customers to securely access, cont... | Opengear | [
"Technology",
"Engineering"
] | 827 | [
"Computer hardware companies",
"Computers",
"Networking hardware",
"Computer networks engineering"
] |
10,740,963 | https://en.wikipedia.org/wiki/NGC%205315 | NGC 5315 is a planetary nebula in the southern constellation Circinus. Of apparent magnitude 9.8 around a central star of magnitude 14.2, it is located 5.2 degrees west-southwest of Alpha Circini. It is only visible as a disc at magnifications over 200-fold. The nebula was discovered by astronomer Ralph Copeland in 188... | NGC 5315 | [
"Astronomy"
] | 277 | [
"Circinus",
"Constellations"
] |
10,741,406 | https://en.wikipedia.org/wiki/NGC%206027b | NGC 6027b is an interacting lenticular galaxy that is part of Seyfert's Sextet, a compact group of galaxies currently in the process of colliding and merging, which is located in the constellation Serpens.
See also
NGC 6027
NGC 6027a
NGC 6027c
NGC 6027d
NGC 6027e
Seyfert's Sextet
References
External links
... | NGC 6027b | [
"Astronomy"
] | 110 | [
"Constellations",
"Serpens"
] |
10,742,185 | https://en.wikipedia.org/wiki/NGC%206027c | NGC 6027c is a barred spiral galaxy that is part of Seyfert's Sextet, a compact group of galaxies, which is located in the constellation Serpens.
See also
NGC 6027
NGC 6027a
NGC 6027b
NGC 6027d
NGC 6027e
Seyfert's Sextet
References
External links
HubbleSite NewsCenter: Pictures and description
Serpens
Barr... | NGC 6027c | [
"Astronomy"
] | 99 | [
"Constellations",
"Serpens"
] |
10,743,212 | https://en.wikipedia.org/wiki/Gross%20processing | Gross processing, "grossing" or "gross pathology" is the process by which pathology specimens undergo examination with the bare eye to obtain diagnostic information, as well as cutting and tissue sampling in order to prepare material for subsequent microscopic examination.
Responsibility
Gross examination of surgical ... | Gross processing | [
"Biology"
] | 526 | [
"Pathology"
] |
10,743,905 | https://en.wikipedia.org/wiki/Ethnoherpetology | Ethnoherpetology is the study of the past and present interrelationships between human cultures and reptiles and amphibians. It is a sub-field of ethnozoology, which in turn is a sub-field of ethnobiology.
Snakes and amphibians have been considered chthonic creatures in many cultures. Richly represented in mythology, ... | Ethnoherpetology | [
"Biology",
"Environmental_science"
] | 428 | [
"Environmental social science",
"Ethnobiology"
] |
10,743,942 | https://en.wikipedia.org/wiki/Cray%20X2 | The Cray X2 is a vector processing node for the Cray XT5h supercomputer, developed and sold by Cray Inc. and launched in 2007.
The X2, developed under the code name Black Widow, was originally expected to be a standalone supercomputer system, superseding the Cray X1 parallel vector supercomputer. However, the X2 was ... | Cray X2 | [
"Technology"
] | 317 | [
"Computing stubs",
"Computer hardware stubs"
] |
10,744,100 | https://en.wikipedia.org/wiki/Dihydrolipoic%20acid | Dihydrolipoic acid is an organic compound that is the reduced form of lipoic acid. This carboxylic acid features a pair of thiol groups, and therefore is a dithiol. It is optically active, but only the R-enantiomer is biochemically significant. The lipoic acid/dihydrolipoic acid pair participate in a variety of bioch... | Dihydrolipoic acid | [
"Chemistry"
] | 106 | [
"Organic compounds",
"Carboxylic acids",
"Thiols",
"Functional groups"
] |
10,744,611 | https://en.wikipedia.org/wiki/Oecologia | Oecologia is an international peer-reviewed English-language journal published by Springer since 1968 (some articles were published in German or French until 1976). The journal publishes original research in a range of topics related to plant and animal ecology.
Oecologia has an international focus and presents origin... | Oecologia | [
"Environmental_science"
] | 279 | [
"Environmental science journals",
"Ecology journals"
] |
10,745,656 | https://en.wikipedia.org/wiki/Adamantine%20%28veneer%29 | Adamantine is a veneer developed by The Celluloid Manufacturing Company of New York City, covered by U.S. Patent number 232,037, dated September 7, 1880, for the process of cementing a celluloid veneer or coating to a substrate such as a wood case. Adamantine veneer was made in black and white, and in colored patterns ... | Adamantine (veneer) | [
"Physics"
] | 186 | [
"Materials stubs",
"Materials",
"Matter"
] |
5,435,664 | https://en.wikipedia.org/wiki/Bush%20tomato | Bush tomatoes are the fruit or entire plants of certain nightshade (Solanum) species native to the more arid parts of Australia. While they are quite closely related to tomatoes (Solanum lycopersicum), they might be even closer relatives of the eggplant (S. melongena), which they resemble in many details. There are 94... | Bush tomato | [
"Biology"
] | 523 | [
"Plant common names",
"Common names of organisms",
"Plants"
] |
5,435,674 | https://en.wikipedia.org/wiki/Acoustic%20shadow | An acoustic shadow or sound shadow is an area through which sound waves fail to propagate, due to topographical obstructions or disruption of the waves via phenomena such as wind currents, buildings, or sound barriers.
Short-distance acoustic shadow
A short-distance acoustic shadow occurs behind a building or a sound... | Acoustic shadow | [
"Physics"
] | 465 | [
"Physical phenomena",
"Classical mechanics",
"Acoustics",
"Waves",
"Motion (physics)"
] |
5,435,686 | https://en.wikipedia.org/wiki/List%20of%20companion%20plants | This is a list of companion plants, traditionally planted together. Many more are in the list of beneficial weeds. Companion planting is thought by its practitioners to assist in the growth of one or both plants involved in the association. Possible mechanisms include attracting beneficial insects, repelling pests, or ... | List of companion plants | [
"Biology"
] | 351 | [
"Lists of biota",
"Lists of plants",
"Plants"
] |
5,435,721 | https://en.wikipedia.org/wiki/Distichlis%20palmeri | Distichlis palmeri is an obligate emergent (it has aerenchyma) perennial rhizomatous dioecious halophytic C4 grass in the Poaceae (Gramineae) family. D. palmeri is a saltwater marsh grass endemic to the tidal marshes of the northern part of the Gulf of California and Islands section of the Sonoran Desert. D. palmeri is... | Distichlis palmeri | [
"Chemistry"
] | 587 | [
"Halophytes",
"Salts"
] |
5,435,743 | https://en.wikipedia.org/wiki/Zirconium%20disilicide | Zirconium disilicide is an inorganic chemical compound with the chemical formula ZrSi2, consisting of zirconium and silicon atoms. It is a ceramic, but not very hard and very brittle.
References
Transition metal silicides
Zirconium(II) compounds | Zirconium disilicide | [
"Chemistry"
] | 60 | [
"Inorganic compounds",
"Inorganic compound stubs"
] |
5,435,783 | https://en.wikipedia.org/wiki/Zirconium%20disulfide | Zirconium(IV) sulfide is the inorganic compound with the formula ZrS2. It is a violet-brown solid. It adopts a layered structure similar to that of cadmium iodide.
Like the closely related titanium disulfide, ZrS2 is prepared by heating sulfur and zirconium metal. It can be purified by vapor transport using iodine.
... | Zirconium disulfide | [
"Chemistry"
] | 102 | [
"Inorganic compounds",
"Inorganic compound stubs"
] |
5,436,316 | https://en.wikipedia.org/wiki/INTBAU | The International Network for Traditional Building, Architecture & Urbanism (INTBAU) is an international organization established in 2001. The organization arose from a research project initiated in 2000 at The Prince's Foundation for the Built Environment and undertaken by Dr Matthew Hardy, an architect and architect... | INTBAU | [
"Engineering"
] | 833 | [
"Architecture organizations",
"Architecture"
] |
5,436,452 | https://en.wikipedia.org/wiki/Cerebro%27s%20X-Men | Cerebro's X-Men are a team of supervillains appearing in American comic books published by Marvel Comics. They are a nanotechnology version of the X-Men created by Cerebro when the supercomputer briefly goes rogue.
This team was created and designed by the Spanish artist Carlos Pacheco, who also drew them for the cove... | Cerebro's X-Men | [
"Materials_science"
] | 1,767 | [
"Fiction about nanotechnology",
"Nanotechnology"
] |
5,436,866 | https://en.wikipedia.org/wiki/Hamaker%20theory | After the explanation of van der Waals forces by Fritz London, several scientists soon realised that his definition could be extended from the interaction of two molecules with induced dipoles to macro-scale objects by summing all of the forces between the molecules in each of the bodies involved. The theory is named a... | Hamaker theory | [
"Physics",
"Chemistry",
"Materials_science",
"Engineering"
] | 217 | [
"Molecular physics",
"Applied and interdisciplinary physics",
"Materials science",
"Intermolecular forces",
"nan",
"Physical chemistry",
"Physical chemistry stubs"
] |
5,437,698 | https://en.wikipedia.org/wiki/James%20K.%20Coyne%20III | James Kitchenman Coyne III (born November 17, 1946) is an American businessman and former politician. From 1981 to 1983, he served one term as a Republican member of the U.S. House of Representatives from Pennsylvania.
Biography
Coyne was born in Farmville, Virginia, and raised in Abington, Pennsylvania, the son of Ja... | James K. Coyne III | [
"Chemistry"
] | 435 | [
"People in the chemical industry"
] |
5,437,798 | https://en.wikipedia.org/wiki/Zinc%20antimonide | Zinc antimonide (ZnSb), (Zn3Sb2), (Zn4Sb3) is an inorganic chemical compound. The Zn-Sb system contains six intermetallics. Like indium antimonide, aluminium antimonide, and gallium antimonide, it is a semiconducting intermetallic compound. It is used in transistors, infrared detectors and thermal imagers, as well as m... | Zinc antimonide | [
"Chemistry"
] | 421 | [
"Inorganic compounds",
"II-V semiconductors",
"II-V compounds",
"Semiconductor materials",
"Inorganic compound stubs"
] |
5,438,016 | https://en.wikipedia.org/wiki/Zinc%20chlorate | Zinc chlorate (Zn(ClO3)2) is an inorganic chemical compound.
References
zinc
chlorate | Zinc chlorate | [
"Chemistry"
] | 27 | [
"Chlorates",
"Inorganic compounds",
"Inorganic compound stubs",
"Salts"
] |
5,438,079 | https://en.wikipedia.org/wiki/Zinc%20molybdate | Zinc molybdate is an inorganic compound with the formula ZnMoO4. It is used as a white pigment, which is also a corrosion inhibitor. A related pigment is sodium zinc molybdate, Na2Zn(MoO4)2. The material has also been investigated as an electrode material.
In terms of its structure, the Mo(VI) centers are tetrahedral... | Zinc molybdate | [
"Chemistry"
] | 202 | [
"Inorganic compounds",
"Inorganic compound stubs"
] |
5,438,215 | https://en.wikipedia.org/wiki/Zinc%20phosphate | Zinc phosphate is an inorganic compound with the formula Zn3(PO4)2. This white powder is widely used as a corrosion resistant coating on metal surfaces either as part of an electroplating process or applied as a primer pigment (see also red lead). It has largely displaced toxic materials based on lead or chromium, and... | Zinc phosphate | [
"Physics",
"Chemistry"
] | 624 | [
"Dental materials",
"Inorganic compounds",
"Process chemicals",
"Inorganic compound stubs",
"Salts",
"Inorganic pigments",
"Materials",
"Phosphates",
"Corrosion inhibitors",
"Matter"
] |
5,438,449 | https://en.wikipedia.org/wiki/ScaLAPACK | The ScaLAPACK (or Scalable LAPACK) library includes a subset of LAPACK routines redesigned for distributed memory MIMD parallel computers. It is currently written in a Single-Program-Multiple-Data style using explicit message passing for interprocessor communication. It assumes matrices are laid out in a two-dimensiona... | ScaLAPACK | [
"Mathematics",
"Technology"
] | 248 | [
"IT infrastructure",
"Numerical software",
"Computer libraries",
"Mathematical software"
] |
5,438,469 | https://en.wikipedia.org/wiki/Desire%20path | A desire path, often referred to as a desire line in transportation planning and also known by various other names, is an unplanned small trail created as a consequence of mechanical erosion caused by human or animal traffic. The path usually represents the shortest or the most easily navigated route between an origin... | Desire path | [
"Engineering"
] | 748 | [
"Landscape architecture",
"Architecture"
] |
5,438,882 | https://en.wikipedia.org/wiki/Ytterbium%28II%29%20chloride | Ytterbium(II) chloride (YbCl2) is an inorganic chemical compound. It was first prepared in 1929 by W. K. Klemm and W. Schuth, by reduction of ytterbium(III) chloride, YbCl3, using hydrogen.
2 YbCl3 + H2 → 2 YbCl2 + 2 HCl
Like other Yb(II) compounds and other low-valence rare earth compounds, it is a strong reducing a... | Ytterbium(II) chloride | [
"Chemistry"
] | 137 | [
"Salts",
"Chlorides",
"Inorganic compounds",
"Inorganic compound stubs"
] |
5,438,924 | https://en.wikipedia.org/wiki/Algebraic%20operation | In mathematics, a basic algebraic operation is any one of the common operations of elementary algebra, which include addition, subtraction, multiplication, division, raising to a whole number power, and taking roots (fractional power). These operations may be performed on numbers, in which case they are often called ar... | Algebraic operation | [
"Mathematics"
] | 662 | [
"Elementary mathematics",
"Algebra",
"Elementary algebra"
] |
5,438,926 | https://en.wikipedia.org/wiki/Programming%20language%20specification | In computer programming, a programming language specification (or standard or definition) is a documentation artifact that defines a programming language so that users and implementors can agree on what programs in that language mean. Specifications are typically detailed and formal, and primarily used by implementors,... | Programming language specification | [
"Engineering"
] | 1,935 | [
"Software engineering",
"Programming language topics"
] |
5,438,948 | https://en.wikipedia.org/wiki/Substitution%20%28logic%29 | A substitution is a syntactic transformation on formal expressions.
To apply a substitution to an expression means to consistently replace its variable, or placeholder, symbols with other expressions.
The resulting expression is called a substitution instance, or instance for short, of the original expression.
Propo... | Substitution (logic) | [
"Mathematics"
] | 2,624 | [
"Automated theorem proving",
"Mathematical logic",
"Computational mathematics",
"Substitution (logic)",
"Logical truth"
] |
5,438,967 | https://en.wikipedia.org/wiki/Yttrium%28III%29%20antimonide | Yttrium(III) antimonide (YSb) is an inorganic chemical compound.
Yttrium antimonide is an intermetallic compound with the chemical formula YSb. It has a NaCl-type structure and is stable in the air. Its thermal expansion coefficient (α, 10−6/°) is 11.1.
It can be produced by the high-temperature reaction of sodium an... | Yttrium(III) antimonide | [
"Chemistry"
] | 111 | [
"Inorganic compounds",
"Inorganic compound stubs"
] |
5,439,007 | https://en.wikipedia.org/wiki/Yttrium%28III%29%20arsenide | Yttrium arsenide is an inorganic compound of yttrium and arsenic with the chemical formula YAs. It can be prepared by reacting yttrium and arsenic at high temperature. Some literature has done research on the eutectic system of it and zinc arsenide.
It reacts with iron, iron(III) arsenide, iron(III) oxide and yttrium(... | Yttrium(III) arsenide | [
"Chemistry"
] | 135 | [
"Inorganic compounds",
"Inorganic compound stubs"
] |
5,439,008 | https://en.wikipedia.org/wiki/Georges%20Sagnac | Georges Sagnac (; 14 October 1869 – 26 February 1928) was a French physicist who lent his name to the Sagnac effect, a phenomenon which is at the basis of interferometers and ring laser gyroscopes developed since the 1970s.
Life and work
Sagnac was born at Périgueux and entered the École Normale Supérieure in 1889. W... | Georges Sagnac | [
"Physics"
] | 515 | [
"Relativity critics",
"Theory of relativity"
] |
5,439,095 | https://en.wikipedia.org/wiki/Yttrium%28III%29%20sulfide | Yttrium(III) sulfide (Y2S3) is an inorganic chemical compound. It is a compound of yttrium and sulfur.
References
Sesquisulfides
Yttrium compounds | Yttrium(III) sulfide | [
"Chemistry"
] | 44 | [
"Inorganic compounds",
"Inorganic compound stubs"
] |
5,439,261 | https://en.wikipedia.org/wiki/Tungsten%28IV%29%20oxide | Tungsten(IV) oxide is the chemical compound with the formula WO2. The bronze-colored solid crystallizes in a monoclinic cell. The rutile-like structure features distorted octahedral WO6 centers with alternate short W–W bonds (248 pm). Each tungsten center has the d2 configuration, which gives the material a high elec... | Tungsten(IV) oxide | [
"Chemistry"
] | 187 | [
"Inorganic compounds",
"Inorganic compound stubs"
] |
5,439,284 | https://en.wikipedia.org/wiki/Programming%20language%20implementation | In computer programming, a programming language implementation is a system for executing computer programs. There are two general approaches to programming language implementation:
Interpretation: The program is read as input by an interpreter, which performs the actions written in the program.
Compilation: The program... | Programming language implementation | [
"Engineering"
] | 695 | [
"Software engineering",
"Programming language topics"
] |
5,439,302 | https://en.wikipedia.org/wiki/Tungsten%20ditelluride | Tungsten ditelluride (WTe2) is an inorganic semimetallic chemical compound. In October 2014, tungsten ditelluride was discovered to exhibit an extremely large magnetoresistance: 13 million percent resistance increase in a magnetic field of 60 tesla at 0.5 kelvin. The resistance is proportional to the square of the mag... | Tungsten ditelluride | [
"Physics"
] | 650 | [
"Monolayers",
"Atoms",
"Matter"
] |
5,439,344 | https://en.wikipedia.org/wiki/Tungsten%28V%29%20bromide | Tungsten(V) bromide is the inorganic compound with the empirical formula WBr5. The compound consists of bioctahedral structure, with two bridging bromide ligands, so its molecular formula is W2Br10.
Preparation and structure
Tungsten(V) bromide is prepared by treating tungsten powder with bromine in the temperature ra... | Tungsten(V) bromide | [
"Chemistry"
] | 384 | [
"Bromides",
"Salts"
] |
5,439,408 | https://en.wikipedia.org/wiki/Tungsten%28V%29%20chloride | Tungsten(V) chloride is an inorganic compound with the formula W2Cl10. This compound is analogous in many ways to the more familiar molybdenum pentachloride.
Synthesis
The material is prepared by reduction of tungsten hexachloride. One method involves the use of tetrachloroethylene as the reductant
2 WCl6 + C2Cl4 ... | Tungsten(V) chloride | [
"Chemistry"
] | 267 | [
"Chlorides",
"Inorganic compounds",
"Salts"
] |
5,439,545 | https://en.wikipedia.org/wiki/Tungsten%28VI%29%20oxytetrabromide | Tungsten(VI) oxytetrabromide is the inorganic compound with the formula WOBr4. This a red-brown, hygroscopic solid sublimes at elevated temperatures. It forms adducts with Lewis bases. The solid consists of weakly associated square pyramidal monomers. The related tungsten(VI) oxytetrachloride has been more heavily ... | Tungsten(VI) oxytetrabromide | [
"Chemistry"
] | 104 | [
"Inorganic compounds",
"Inorganic compound stubs"
] |
5,439,627 | https://en.wikipedia.org/wiki/Tungsten%28VI%29%20oxytetrachloride | Tungsten(VI) oxytetrachloride is the inorganic compound with the formula WOCl4. This diamagnetic solid is used to prepare other complexes of tungsten. The red crystalline compound is soluble in nonpolar solvents but it reacts with alcohols and water and forms adducts with Lewis bases.
Structure
The solid consists o... | Tungsten(VI) oxytetrachloride | [
"Chemistry"
] | 193 | [
"Chlorides",
"Inorganic compounds",
"Metal halides",
"Salts"
] |
5,439,710 | https://en.wikipedia.org/wiki/Water%20hole%20%28radio%29 | The waterhole, or water hole, is an especially quiet band of the electromagnetic spectrum between 1420 and 1662 megahertz, corresponding to wavelengths of 18–21 centimeters. It is a popular observing frequency used by radio telescopes in radio astronomy.
The strongest hydroxyl radical spectral line radiates at 18 cent... | Water hole (radio) | [
"Physics",
"Astronomy"
] | 347 | [
"Spectrum (physical sciences)",
"Astronomy stubs",
"Astrophysics",
"Electromagnetic spectrum",
"Astrophysics stubs"
] |
5,439,721 | https://en.wikipedia.org/wiki/Tungsten%20oxytetrafluoride | Tungsten oxytetrafluoride is an inorganic compound with the formula WOF4. It is a colorless diamagnetic solid. The compound is one of many oxides of tungsten. It is usually encountered as product of the partial hydrolysis of tungsten hexafluoride.
Structure
As confirmed by X-ray crystallography, WOF4 crystallizes a... | Tungsten oxytetrafluoride | [
"Chemistry"
] | 346 | [
"Inorganic compounds",
"Metal halides",
"Salts"
] |
5,439,755 | https://en.wikipedia.org/wiki/List%20of%20Canadian%20plants%20by%20genus%20D | Below is a list of Canadian plants by genus. Due to the vastness of Canada's biodiversity, this page is divided.
This is a (partial) list of the plant species considered native to Canada. Many of the plants seen in Canada are introduced, either intentionally or accidentally. For these plants, see List of introduced s... | List of Canadian plants by genus D | [
"Biology"
] | 1,470 | [
"Lists of biota",
"Lists of plants",
"Plants"
] |
5,439,832 | https://en.wikipedia.org/wiki/Frequency%20drift | In electrical engineering, and particularly in telecommunications, frequency drift is an unintended and generally arbitrary offset of an oscillator from its nominal frequency. Causes may include component aging, changes in temperature that alter the piezoelectric effect in a crystal oscillator, or problems with a volt... | Frequency drift | [
"Engineering"
] | 340 | [
"Broadcast engineering",
"Electronic engineering",
"Telecommunications engineering",
"Communication circuits"
] |
5,439,870 | https://en.wikipedia.org/wiki/Vanadium%20nitride | Vanadium nitride, VN, is a chemical compound of vanadium and nitrogen.
Vanadium nitride is formed during the nitriding of steel and increases wear resistance. Another phase, V2N, also referred to as vanadium nitride, can be formed along with VN during nitriding. VN has a cubic, rock-salt structure. There is also a low... | Vanadium nitride | [
"Chemistry"
] | 207 | [
"Inorganic compounds",
"Inorganic compound stubs"
] |
5,440,323 | https://en.wikipedia.org/wiki/Golf%20etiquette | Golf etiquette refers to a set of rules and practices designed to make the game of golf safer and more enjoyable for golfers and to minimize possible damage to golf equipment and courses. Although many of these practices are not part of the formal rules of golf, golfers are customarily expected to observe them. The R&A... | Golf etiquette | [
"Biology"
] | 915 | [
"Etiquette",
"Behavior",
"Human behavior"
] |
5,440,367 | https://en.wikipedia.org/wiki/Baire%20one%20star%20function | A Baire one star function is a type of function studied in real analysis. A function is in class Baire* one, written , and is called a Baire one star function if, for each perfect set , there is an open interval , such that is nonempty, and the restriction is continuous. The notion seems to have originated with B. K... | Baire one star function | [
"Mathematics"
] | 232 | [
"Mathematical analysis",
"Functions and mappings",
"Mathematical analysis stubs",
"Mathematical objects",
"Mathematical relations",
"Types of functions"
] |
5,440,905 | https://en.wikipedia.org/wiki/Winlink | Winlink, or formally, Winlink Global Radio Email (registered US Service Mark), also known as the Winlink 2000 Network, is a worldwide radio messaging system that uses amateur-band radio frequencies and government frequencies to provide radio interconnection services that include email with attachments, position reporti... | Winlink | [
"Technology"
] | 2,148 | [
"Wireless networking",
"Packet radio"
] |
5,441,003 | https://en.wikipedia.org/wiki/Petar%20V.%20Kokotovic | Petar V. Kokotovic (; born 1934) is professor emeritus in the College of Engineering at the University of California, Santa Barbara, USA. He has made contributions in the areas of adaptive control, singular perturbation techniques, and nonlinear control especially the backstepping stabilization method.
Biography
Kokot... | Petar V. Kokotovic | [
"Engineering"
] | 745 | [
"Control engineering",
"Control theorists"
] |
5,441,307 | https://en.wikipedia.org/wiki/Stephen%20Lee%20%28chemist%29 | Stephen Lee (; born 25 October 1955) is an American chemist. He is the son of Tsung-Dao Lee, the winner of the 1957 Nobel Prize in Physics. He is currently a professor at Cornell University.
Education
Lee attended the International School of Geneva, Switzerland and Yale University, from which he graduated with a BA in... | Stephen Lee (chemist) | [
"Chemistry"
] | 481 | [
"Solid state chemists"
] |
5,442,007 | https://en.wikipedia.org/wiki/Edmund%20Hlawka | Edmund Hlawka (5 November 1916, Bruck an der Mur, Styria – 19 February 2009) was an Austrian mathematician. He was a leading number theorist. Hlawka did most of his work at the Vienna University of Technology. He was also a visiting professor at Princeton University and the Sorbonne. Hlawka died on 19 February 2009 in ... | Edmund Hlawka | [
"Mathematics"
] | 378 | [
"Number theorists",
"Number theory"
] |
5,442,380 | https://en.wikipedia.org/wiki/Sensory%20cue | In perceptual psychology, a sensory cue is a statistic or signal that can be extracted from the sensory input by a perceiver, that indicates the state of some property of the world that the perceiver is interested in perceiving.
A cue is some organization of the data present in the signal which allows for meaningful e... | Sensory cue | [
"Biology"
] | 3,619 | [
"Behavioural sciences",
"Behavior",
"Cognitive psychology"
] |
5,442,383 | https://en.wikipedia.org/wiki/Magnetophon | Magnetophon was the brand or model name of the pioneering reel-to-reel tape recorder developed by engineers of the German electronics company AEG in the 1930s, based on the magnetic tape invention by Fritz Pfleumer. AEG created the world's first practical tape recorder, the K1, first demonstrated in Germany in 1935 at ... | Magnetophon | [
"Technology"
] | 1,930 | [
"Recording devices",
"Sound recording technology",
"Tape recording"
] |
5,442,545 | https://en.wikipedia.org/wiki/Induction%20hardening | Induction hardening is a type of surface hardening in which a metal part is induction-heated and then quenched. The quenched metal undergoes a martensitic transformation, increasing the hardness and brittleness of the part. Induction hardening is used to selectively harden areas of a part or assembly without affectin... | Induction hardening | [
"Chemistry"
] | 2,227 | [
"Metallurgical processes",
"Metal heat treatments"
] |
5,442,632 | https://en.wikipedia.org/wiki/Phenibut | Phenibut, sold under the brand name Anvifen among others, is a central nervous system (CNS) depressant with anxiolytic effects, and is used to treat anxiety, insomnia, and for a variety of other indications. It is usually taken orally (swallowed by mouth), but may be given intravenously.
Side effects of phenibut can i... | Phenibut | [
"Biology"
] | 2,924 | [
"Hypnotics",
"Behavior",
"Sleep"
] |
5,442,715 | https://en.wikipedia.org/wiki/New%20Gulim | New Gulim (새굴림/SaeGulRim) is a sans-serif type Unicode font designed especially for the Korean-language script, designed by HanYang System Co., Limited (now Hanyang Information & Communications Co., Ltd). It is an expanded version of Hanyang Gulrim (한양 굴림).
Font is hinted at 0–13 points, hinted and smoothed at 14 poin... | New Gulim | [
"Technology"
] | 586 | [
"Computing stubs",
"Digital typography stubs"
] |
5,442,749 | https://en.wikipedia.org/wiki/Shwartzman%20phenomenon | Shwartzman phenomenon is a rare reaction of a body to particular types of toxins, called endotoxins, which cause thrombosis in the affected tissue. A clearing of the thrombosis results in a reticuloendothelial blockade, which prevents re-clearing of the thrombosis caused by a repeat introduction of the toxin. That wi... | Shwartzman phenomenon | [
"Environmental_science"
] | 228 | [
"Toxicology"
] |
5,442,846 | https://en.wikipedia.org/wiki/Multiple%20rule-based%20problems | Multiple rule-based problems are problems containing various conflicting rules and restrictions. Such problems typically have an "optimal" solution, found by striking a balance between the various restrictions, without directly defying any of the aforementioned restrictions.
Solutions to such problems can either requi... | Multiple rule-based problems | [
"Mathematics"
] | 146 | [
"Mathematical analysis",
"Mathematical analysis stubs"
] |
5,443,653 | https://en.wikipedia.org/wiki/Five-year%20survival%20rate | The five-year survival rate is a type of survival rate for estimating the prognosis of a particular disease, normally calculated from the point of diagnosis. Lead time bias from earlier diagnosis can affect interpretation of the five-year survival rate.
There are absolute and relative survival rates, but the latter a... | Five-year survival rate | [
"Environmental_science"
] | 488 | [
"Epidemiology",
"Environmental social science"
] |
5,443,884 | https://en.wikipedia.org/wiki/Ornstein%20isomorphism%20theorem | In mathematics, the Ornstein isomorphism theorem is a deep result in ergodic theory. It states that if two Bernoulli schemes have the same Kolmogorov entropy, then they are isomorphic. The result, given by Donald Ornstein in 1970, is important because it states that many systems previously believed to be unrelated ar... | Ornstein isomorphism theorem | [
"Mathematics"
] | 696 | [
"Symbolic dynamics",
"Ergodic theory",
"Dynamical systems"
] |
5,444,091 | https://en.wikipedia.org/wiki/Knob-and-tube%20wiring | Knob-and-tube wiring (sometimes abbreviated K&T) is an early standardized method of electrical wiring in buildings, in common use in North America from about 1880 to the 1930s. It consisted of single-insulated copper conductors run within wall or ceiling cavities, passing through joist and stud drill-holes via protecti... | Knob-and-tube wiring | [
"Physics",
"Engineering"
] | 2,118 | [
"Electrical systems",
"Building engineering",
"Physical systems",
"Electrical engineering",
"Electrical wiring"
] |
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