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Fermi–Walker transport | Fermi–Walker transport is a process in general relativity used to define a coordinate system or reference frame such that all curvature in the frame is due to the presence of mass/energy density and not to arbitrary spin or rotation of the frame. |
Lava tree mold | A lava tree mold, sometimes erroneously called a lava tree cast, is a hollow lava formation that formed around a tree trunk. They are created when lava flows through an area of trees, coating their exterior. The lava cools just enough to create a solid crust around the trunk, but the tree inside burns away leaving a ca... |
Unimodular matrix | In mathematics, a unimodular matrix M is a square integer matrix having determinant +1 or −1. Equivalently, it is an integer matrix that is invertible over the integers: there is an integer matrix N that is its inverse (these are equivalent under Cramer's rule). Thus every equation Mx = b, where M and b both have integ... |
Season extension | Season extension in agriculture is any method that allows a crop to be grown beyond its normal outdoor growing season and harvesting time frame, or the extra time thus achieved. To extend the growing season into the colder months, one can use unheated techniques such as floating row covers, low tunnels, caterpillar tun... |
Adventures with Purpose | Adventures with Purpose is a group of scuba divers who use sonar to locate missing persons and their vehicles in waterbodies. Originally focused on clean-up, they turned their focus to missing persons cold cases. The group documents their efforts on their YouTube channel. |
Characteristics of common wasps and bees | While observers can easily confuse common wasps and bees at a distance or without close observation, there are many different characteristics of large bees and wasps that can be used to identify them. |
Scientific technique | A scientific technique is any systematic way of obtaining information about a scientific nature or to obtain a desired material or product.
Scientific techniques can be divided in many different groups, e.g.: Preparative techniques Synthesis techniques, e.g. the use of Grignard reagents in organic chemistry Growth tech... |
Erosion and tectonics | The interaction between erosion and tectonics has been a topic of debate since the early 1990s. While the tectonic effects on surface processes such as erosion have long been recognized (for example, river formation as a result of tectonic uplift), the opposite (erosional effects on tectonic activity) has only recently... |
Hypercubic honeycomb | In geometry, a hypercubic honeycomb is a family of regular honeycombs (tessellations) in n-dimensional spaces with the Schläfli symbols {4,3...3,4} and containing the symmetry of Coxeter group Rn (or B~n–1) for n ≥ 3.
The tessellation is constructed from 4 n-hypercubes per ridge. The vertex figure is a cross-polytope {... |
Preventer | A gybe preventer, preventer, or jibe-guard, is a mechanical device on a sailing vessel which limits the boom's ability to swing unexpectedly across the boat due to an unplanned accidental jibe.During an unplanned accidental jibe (or gybe), neither the crew nor the boat is set up properly to execute a planned jibe. As a... |
Tile Studio | Tile Studio is a Windows-only editor for graphics and level data of tile-based video games. The application combines a bitmap editor for creating graphics and a map editor for designing level maps. A notable feature, distinguishing this tool from the approach of similar programs like Mappy and Tiled which define their... |
Faithful representation | In mathematics, especially in an area of abstract algebra known as representation theory, a faithful representation ρ of a group G on a vector space V is a linear representation in which different elements g of G are represented by distinct linear mappings ρ(g).
In more abstract language, this means that the group homo... |
Hiring hall | In organized labor, a hiring hall is an organization, usually under the auspices of a labor union, which has the responsibility of furnishing new recruits for employers who have a collective bargaining agreement with the union. It may also refer to a union hall, or the office from which the union may conduct its activi... |
Concussion grading systems | Concussion grading systems are sets of criteria used in sports medicine to determine the severity, or grade, of a concussion, the mildest form of traumatic brain injury. At least 16 such systems exist, and there is little agreement among professionals about which is the best to use. Several of the systems use loss of c... |
Hydrogen energy vision and technology roadmap | The Hydrogen energy vision and technology roadmap is the roadmap of China initiated by the Ministry of Science and Technology, it makes hydrogen and fuel cell technologies important thematic priorities of the S&T development plan. |
Perfluorosulfonic acids | Perfluorosulfonic acids (PFSAs) are chemical compounds of the formula CnF(2n+1)SO3H and thus belong to the family of perfluorinated and polyfluorinated alkyl compounds (PFASs). The simplest example of a perfluorosulfonic acid is the trifluoromethanesulfonic acid. Perfluorosulfonic acids with six or more perfluorinated ... |
BBC Lab UK | BBC Lab UK was a BBC website that allowed the public to take part in online experiments by completing tests and surveys. The website was active for four years until its data collection ceased in May 2013. Details of the experiments and projects have now been archived.Lab UK was commissioned in 2008 by BBC Commissioner ... |
Resonance frequency analysis | Resonance frequency analysis (RFA) is a method used to determine stability (the level of osseointegration) in dental implants. The stability is presented as an implant stability quotient (ISQ) value. The higher the ISQ value the higher the stability.
Utilizing RFA involves sending magnetic pulses to a small metal rod t... |
Subtext (programming language) | Subtext is a moderately visual programming language and environment, for writing application software. It is an experimental, research attempt to develop a new programming model, called Example Centric Programming, by treating copied blocks as first class prototypes, for program structure. It uses live text, similar to... |
Parasitoid | In evolutionary ecology, a parasitoid is an organism that lives in close association with its host at the host's expense, eventually resulting in the death of the host. Parasitoidism is one of six major evolutionary strategies within parasitism, distinguished by the fatal prognosis for the host, which makes the strateg... |
Rhenium trioxide | Rhenium trioxide or rhenium(VI) oxide is an inorganic compound with the formula ReO3. It is a red solid with a metallic lustre that resembles copper in appearance. It is the only stable trioxide of the Group 7 elements (Mn, Tc, Re). |
Membrane emulsification | Membrane emulsification (ME) is a relatively novel technique for producing all types of single and multiple emulsions for DDS (drug delivery systems), solid micro carriers for encapsulation of drug or nutrient, solder particles for surface-mount technology, mono dispersed polymer microspheres (for analytical column pac... |
Flight recorder | A flight recorder is an electronic recording device placed in an aircraft for the purpose of facilitating the investigation of aviation accidents and incidents. The device may often be referred to colloquially as a "black box", an outdated name which has become a misnomer—they are now required to be painted bright oran... |
Brain vesicle | Brain vesicles are the bulge-like features of the early development of the neural tube in vertebrates. Vesicle formation begins shortly after anterior neural tube closure at about embryonic day 9.0 in the mouse and the fourth and fifth gestational week in human development. In zebrafish and chicken embryos, brain vesic... |
Local usage details | Local usage details (LUD) are a detailed record of local calls made and received from a particular phone number. These records are regularly available to police in the United States and Canada with a court order, and were traditionally subject to the same restrictions as telephone tapping.
LUDs may be legally used by t... |
Permanganic acid | Permanganic acid (or manganic(VII) acid) is the inorganic compound with the formula HMnO4. This strong oxoacid has been isolated as its dihydrate. It is the conjugate acid of permanganate salts. It is the subject of few publications and its characterization as well as its uses are very limited. |
Tricalcium aluminate | Tricalcium aluminate Ca3Al2O6, often formulated as 3CaO·Al2O3 to highlight the proportions of the oxides from which it is made, is the most basic of the calcium aluminates. It does not occur in nature, but is an important mineral phase in Portland cement. |
Discrete phase-type distribution | The discrete phase-type distribution is a probability distribution that results from a system of one or more inter-related geometric distributions occurring in sequence, or phases. The sequence in which each of the phases occur may itself be a stochastic process. The distribution can be represented by a random variable... |
Indefinite monism | Indefinite monism is a philosophical conception of reality that asserts that only awareness is real and that the wholeness of reality can be conceptually thought of in terms of immanent and transcendent aspects. The immanent aspect is denominated simply as awareness, while the transcendent aspect is referred to as omni... |
Glacial erratic | A glacial erratic is glacially deposited rock differing from the type of rock native to the area in which it rests. Erratics, which take their name from the Latin word errare ("to wander"), are carried by glacial ice, often over distances of hundreds of kilometres. Erratics can range in size from pebbles to large bould... |
Von Hippel–Lindau disease | Von Hippel–Lindau disease (VHL), also known as Von Hippel–Lindau syndrome, is a rare genetic disorder with multisystem involvement. It is characterized by visceral cysts and benign tumors with potential for subsequent malignant transformation. It is a type of phakomatosis that results from a mutation in the Von Hippel–... |
Gypsum Springs Formation | The Gypsum Springs Formation is a stratigraphical unit of Middle Jurassic age in the Williston Basin.
It takes the name from Gypsum Springs in Wyoming, and was first described in outcrop in Freemont County by J.D. Love in 1939. |
IBM SecureWay Directory | IBM SecureWay Directory was the first directory server offering from IBM. Its latest release is called IBM Tivoli Directory Server. IBM Secureway Directory wasn't changed until the Release 5.1 was then known as IBM Directory Server. In the next release of the product, I.E. Release 5.2, the name was again changed to inc... |
Grounding in communication | Grounding in communication is a concept proposed by Herbert H. Clark and Susan E. Brennan. It comprises the collection of "mutual knowledge, mutual beliefs, and mutual assumptions" that is essential for communication between two people. Successful grounding in communication requires parties "to coordinate both the cont... |
CER-203 | CER (Serbian: Цифарски Електронски Рачунар – Digital Electronic Computer) model 203 is an early digital computer developed by Mihajlo Pupin Institute (Serbia) in 1971. It was designed to process data of medium-sized businesses: In banks, for managing and processing of accounts, bookkeeping, foreign-currency and interes... |
Taxis of Venezuela | Taxicabs of Venezuela is a form of public transport in Venezuela. At difference with most taxicab services in the world, in Venezuela there is not taximeter, nor any other form of measure the fare. The way it is measure is by a 'Carrera' which varies between driver. Due to this way of charging, it is a custom to ask an... |
Kirlian photography | Kirlian photography is a collection of photographic techniques used to capture the phenomenon of electrical coronal discharges. It is named after Semyon Kirlian, who, in 1939, accidentally discovered that if an object on a photographic plate is connected to a high-voltage source, an image is produced on the photographi... |
Lotka's law | Lotka's law, named after Alfred J. Lotka, is one of a variety of special applications of Zipf's law. It describes the frequency of publication by authors in any given field. Let X be the number of publications, Y be the number of authors with X publications, and k be a constants depending on the specific field. Lotk... |
Computer programming | Computer programming is the process of performing particular computations (or more generally, accomplishing specific computing results), usually by designing and building executable computer programs. Programming involves tasks such as analysis, generating algorithms, profiling algorithms' accuracy and resource consump... |
Batten | A batten is most commonly a strip of solid material, historically wood but can also be of plastic, metal, or fiberglass. Battens are variously used in construction, sailing, and other fields.
In the lighting industry, battens refer to linear light fittings.
In the steel industry, battens used as furring may also be ref... |
Core Foundation | Core Foundation (also called CF) is a C application programming interface (API) written by Apple for its operating systems, and is a mix of low-level routines and wrapper functions. Most Core Foundation routines follow a certain naming convention that deal with opaque objects, for example CFDictionaryRef for functions ... |
Splanchnology | Splanchnology is the study of the visceral organs, i.e. digestive, urinary, reproductive and respiratory systems.The term derives from the Neo-Latin splanchno-, from the Greek σπλάγχνα, meaning "viscera". More broadly, splanchnology includes all the components of the Neuro-Endo-Immune (NEI) Supersystem. An organ (or vi... |
Nepcon | NEPCON is a trade event for the electronics manufacturing industry. It is held annually in several parts of the world. In the United States, for instance, the event called NEPCON West had a 37-year run and ended in 2002. This trade show has been described as the grandfather of all electronics manufacturing trade shows.... |
Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy | The Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy, referred to internationally as Pittcon, is a non-profit educational organization based in Pennsylvania that organizes an annual Conference and Exposition on laboratory science. It is sponsored by the Spectroscopy Society of Pittsburgh and the S... |
Outflow channels | Outflow channels are extremely long, wide swathes of scoured ground on Mars. They extend many hundreds of kilometers in length and are typically greater than one kilometer in width. They are thought to have been carved by huge outburst floods. |
Sediment quality triad | In aquatic toxicology, the sediment quality triad (SQT) approach has been used as an assessment tool to evaluate the extent of sediment degradation resulting from contaminants released due to human activity present in aquatic environments (Chapman, 1990). This evaluation focuses on three main components: 1.) sediment c... |
Mother Earth Mother Board | "Mother Earth Mother Board" is an essay by Neal Stephenson that appeared in Wired Magazine in December, 1996, on the subject of the history of undersea communication cables and a modern-day effort to lay the Fibre-optic Link Around the Globe. It was later reprinted in Some Remarks. |
Alvis–Curtis duality | In mathematics, the Alvis–Curtis duality is a duality operation on the characters of a reductive group over a finite field, introduced by Charles W. Curtis (1980) and studied by his student Dean Alvis (1979). Kawanaka (1981, 1982) introduced a similar duality operation for Lie algebras.
Alvis–Curtis duality has order 2... |
BlueTEC | BlueTEC is Mercedes-Benz Group's marketing name for engines equipped with advanced NOx reducing technology for vehicle emissions control in diesel-powered vehicles. The technology in BlueTec vehicles includes a selective catalytic reduction (SCR) system that uses diesel exhaust fluid, and a system of NOx adsorbers the ... |
Balance of system | The balance of system (BOS) encompasses all components of a photovoltaic system other than the photovoltaic panels. This includes wiring, switches, a mounting system, one or many solar inverters, a battery bank and battery charger.
Other optional components include renewable energy credit revenue-grade meter, maximum ... |
Spatial gradient | A spatial gradient is a gradient whose components are spatial derivatives, i.e., rate of change of a given scalar physical quantity with respect to the position coordinates. Homogeneous regions have spatial gradient vector norm equal to zero.
When evaluated over vertical position (altitude or depth), it is called vert... |
MVA85A | MVA85A (modified vaccinia Ankara 85A) is a vaccine against tuberculosis developed by researchers led by Professor Helen McShane at Oxford University. This vaccine produces higher levels of long-lasting cellular immunity when used together with the older TB vaccine BCG. Phase I clinical trials were completed and then ph... |
Moai (software) | Moai is a development and deployment platform designed for the creation of mobile games on iOS and Android smartphones. The Moai platform consists of Moai SDK, an open source game engine, and Moai Cloud, a cloud platform as a service (PaaS) for the hosting and deployment of game services. Moai developers use Lua, C++ a... |
Dust mask | A dust mask is a flexible paper pad held over the nose and mouth by elastic or rubber straps for personal comfort against non-toxic nuisance dusts. They are not intended to provide protection from toxic airborne hazards. The European FFP1 mask, the lowest-grade mechanical filter respirator available in the jurisdiction... |
C. F. Palmer, Ltd | C. F. Palmer, Ltd was an independent manufacturer of scientific instruments, mostly in the field of physiology. Since 1987 it has been a subsidiary of Harvard Apparatus.The company was founded in London in 1891 by the English mechanical engineer and bicycle maker Charles Fielding Palmer (1864-1938). It described itself... |
Halimadienyl-diphosphate synthase | Halimadienyl-diphosphate synthase (EC 5.5.1.16, Rv3377c, halimadienyl diphosphate synthase, tuberculosinol diphosphate synthase, halima-5(6),13-dien-15-yl-diphosphate lyase (cyclizing)) is an enzyme with systematic name halima-5,13-dien-15-yl-diphosphate lyase (decyclizing). This enzyme catalyses the following chemical... |
Germacrene A alcohol dehydrogenase | Germacrene A alcohol dehydrogenase (EC 1.1.1.314) is an enzyme with systematic name germacra-1(10),4,11(13)-trien-12-ol:NADP+ oxidoreductase. This enzyme catalyses the following chemical reaction germacra-1(10),4,11(13)-trien-12-ol + 2 NADP+ + H2O ⇌ germacra-1(10),4,11(13)-trien-12-oate + 2 NADPH + 3 H+ (overall react... |
Oculocerebrocutaneous syndrome | Oculocerebrocutaneous syndrome is a condition characterized by orbital cysts, microphthalmia, porencephaly, agenesis of the corpus callosum, and facial skin tags. |
Wetted area | In fluid dynamics, the wetted area is the surface area that interacts with the working fluid or gas.
In maritime use, the wetted area is the area of the watercrafts hull which is immersed in water. This has a direct relationship on the overall hydrodynamic drag of the ship or submarine.
In aeronautics, the wetted area ... |
Assistive cane | An assistive cane is a walking stick used as a crutch or mobility aid. A cane can help redistribute weight from a lower leg that is weak or painful, improve stability by increasing the base of support, and provide tactile information about the ground to improve balance. In the US, ten percent of adults older than 65 ye... |
Advanced Digital Recording | Advanced Digital Recording (ADR) is a magnetic tape data storage format developed by OnStream from 1998 to 2003. Since the demise of OnStream, the format has been orphaned. ADR is an 8-track, linear tape format. |
Mora (linguistics) | A mora (plural morae or moras; often symbolized μ) is a basic timing unit in the phonology of some spoken languages, equal to or shorter than a syllable. For example, a short syllable such as ba consists of one mora (monomoraic), while a long syllable such as baa consists of two (bimoraic); extra-long syllables with th... |
OneGeology | OneGeology is an international collaborative project in the field of geology supported by 118 countries, UNESCO, and major global geoscience bodies. It is an International Year of Planet Earth flagship initiative that aims to enable online access to dynamic digital geological map of the world for everyone. The project ... |
Internet metaphors | Internet metaphors provide users and researchers of the Internet a structure for understanding and communicating its various functions, uses, and experiences. An advantage of employing metaphors is that they permit individuals to visualize an abstract concept or phenomenon with which they have limited experience by com... |
Metizolam | Metizolam (also known as desmethyletizolam) is a thienotriazolodiazepine that is the demethylated analogue of the closely related etizolam. |
Interview (journalism) | A journalistic interview takes the form of a conversation between two or more people: interviewer(s) ask questions to elicit facts or statements from interviewee(s). Interviews are a standard part of journalism and media reporting. In journalism, interviews are one of the most important methods used to collect informat... |
Subterrene | A subterrene (Latin: subterrina, Russian: Подземная лодка) is a vehicle that travels underground (through solid rock or soil) much as a submarine travels underwater, either by mechanical drilling, or by melting its way forward. Subterrenes existed first in fiction as mechanical drillers, with real-world thermal designs... |
OR10T2 | Olfactory receptor 10T2 is a protein that in humans is encoded by the OR10T2 gene.Olfactory receptors interact with odorant molecules in the nose, to initiate a neuronal response that triggers the perception of a smell. The olfactory receptor proteins are members of a large family of G-protein-coupled receptors (GPCR) ... |
Acoustic plaster | Acoustic plaster is plaster which contains fibres or aggregate so that it absorbs sound. Early plasters contained asbestos, but newer ones consist of a base layer of absorptive substrate panels, which are typically mineral wool, or a non-combustible inorganic blow-glass granulate. A first finishing layer is then applie... |
Field (computer science) | In computer science, data that has several parts, known as a record, can be divided into fields (data fields). Relational databases arrange data as sets of database records, so called rows. Each record consists of several fields; the fields of all records form the columns. |
Overlap–add method | In signal processing, the overlap–add method is an efficient way to evaluate the discrete convolution of a very long signal x[n] with a finite impulse response (FIR) filter h[n] where h[m] = 0 for m outside the region [1, M].
This article uses common abstract notations, such as {\textstyle y(t)=x(t)*h(t),} or {\tex... |
Ski rental problem | In computer science, the ski rental problem is a name given to a class of problems in which there is a choice between continuing to pay a repeating cost or paying a one-time cost which eliminates or reduces the repeating cost. |
Climate of Europe | Europe is generally characterized by a temperate climate. Most of Western Europe has an Oceanic climate, in the Köppen climate classification, featuring cool to warm summers and cool winters with frequent overcast skies. Southern Europe has a distinctively Mediterranean climate, which features warm to hot, dry summers ... |
Sighting in | In ranged weapons such as firearms and artillery pieces, sighting in or sight-in is a preparatory or corrective calibration of the sights with the goal that the projectile (e.g. bullet or shell) may be placed at a predictable impact position within the sight picture. The principle of sighting-in is to shift the line of... |
Musical theatre | Musical theatre is a form of theatrical performance that combines songs, spoken dialogue, acting and dance. The story and emotional content of a musical – humor, pathos, love, anger – are communicated through words, music, movement and technical aspects of the entertainment as an integrated whole. Although musical thea... |
Mondrian OLAP server | Mondrian is an open source OLAP (online analytical processing) server, written in Java. It supports the MDX (multidimensional expressions) query language and the XML for Analysis and olap4j interface specifications. It reads from SQL and other data sources and aggregates data in a memory cache. |
Photographic plate | Photographic plates preceded photographic film as a capture medium in photography, and were still used in some communities up until the late 20th century. The light-sensitive emulsion of silver salts was coated on a glass plate, typically thinner than common window glass. |
J-CODE | J-CODE, an acronym for Joint Criminal Opioid Darknet Enforcement, is an FBI operation announced by U.S. Attorney General Jeff Sessions on January 29, 2018, in Pittsburgh, Pennsylvania which targets illegal opioid distribution on the Darknet. Given the integrity and robustness of the hidden services of the Tor anonymity... |
Comparison of color models in computer graphics | This article provides introductory information about the RGB, HSV, and HSL color models from a computer graphics (Web page, image) perspective. An introduction to colors is also provided to support the main discussion. |
Censoring (statistics) | In statistics, censoring is a condition in which the value of a measurement or observation is only partially known. |
Gong bass drum | A gong bass drum (or simply gong drum) is a musical instrument in the percussion family. It is a type of drum that uses a single large drumhead in order to create a loud, resonant sound when struck. The head can be tuned as loose as possible to avoid any sense of pitch in the sound, or tensioned more tightly to produce... |
CTEP | CTEP (Ro4956371) is a research drug developed by Hoffmann-La Roche that acts as a selective allosteric antagonist of the metabotropic glutamate receptor subtype mGluR5, binding with nanomolar affinity and over 1000 times selectivity over all other receptor targets tested. In animal studies it was found to have a high o... |
Byre-dwelling | A byre-dwelling ("byre"+ "dwelling") is a farmhouse in which the living quarters are combined with the livestock and/or grain barn under the same roof. In the latter case, the building is also called a housebarn in American English.
This kind of construction is found in archaeological sites in northwestern Europe from ... |
Xenon oxydifluoride | Xenon oxydifluoride is an inorganic compound with the molecular formula XeOF2. The first definitive isolation of the compound was published on 3 March 2007, producing it by the previously-examined route of partial hydrolysis of xenon tetrafluoride. |
Totems (video game) | Totems (officially TOTEMS) is a cancelled video game for the Xbox 360 and PC developed by 10Tacle Studios Belgium. |
Tetrakis cuboctahedron | In geometry, the tetrakis cuboctahedron is a convex polyhedron with 32 triangular faces, 48 edges, and 18 vertices. It is a dual of the truncated rhombic dodecahedron. |
Molecular wire | Molecular wires (or sometimes called molecular nanowires) are molecular chains that conduct electric current. They are the proposed building blocks for molecular electronic devices. Their typical diameters are less than three nanometers, while their lengths may be macroscopic, extending to centimeters or more. |
Standard time in manufacturing | Standard time is the amount of time that should be allowed for an average worker to process one work unit using the standard method and working at a normal pace. The standard time includes some additional time, called the contingency allowance, to provide for the worker's personal needs, fatigue, and unavoidable delays... |
Agaropectin | Agaropectin is one of the two main components of agar and mainly consists of D-glucuronic acid and pyruvic acid. |
Fusion Drive | Fusion Drive is a type of hybrid drive technology created by Apple Inc. It combines a hard disk drive with a NAND flash storage (solid-state drive of 24 GB or more) and presents it as a single Core Storage managed logical volume with the space of both drives combined.The operating system automatically manages the conte... |
Superior cerebellar artery | The superior cerebellar artery (SCA) is an artery of the head. It arises near the end of the basilar artery. It is a branch of the basilar artery. It supplies parts of the cerebellum, the midbrain, and other nearby structures. It is the cause of trigeminal neuralgia in some patients. |
Bochner's formula | In mathematics, Bochner's formula is a statement relating harmonic functions on a Riemannian manifold (M,g) to the Ricci curvature. The formula is named after the American mathematician Salomon Bochner. |
(protein-PII) uridylyltransferase | In enzymology, a [protein-PII] uridylyltransferase (EC 2.7.7.59) is an enzyme that catalyzes the chemical reaction UTP + [protein-PII] ⇌ diphosphate + uridylyl-[protein-PII]Thus, the two substrates of this enzyme are UTP and protein-PII, whereas its two products are diphosphate and [[uridylyl-[protein-PII]]].
This enz... |
Close-mid central unrounded vowel | The close-mid central unrounded vowel, or high-mid central unrounded vowel, is a type of vowel sound used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɘ⟩. This is a mirrored letter e and should not be confused with the schwa ⟨ə⟩, which is a turned e. It was ... |
Photolith film | A photolith film is a transparent film, made with some sort of transparent plastic (formerly made of acetate). Nowadays, with the use of laser printers and computers, the photolith film can be based on polyester, vegetable paper or laser film paper. It is mainly used in all photolithography processes. |
Sodium decavanadate | Sodium decavanadate describes any member of the family of inorganic compounds with the formula Na6[V10O28](H2O)n. These are sodium salts of the orange-colored decavanadate anion [V10O28]6−. Numerous other decavanadate salts have been isolated and studied since 1956 when it was first characterized. |
TrueCrypt version history | TrueCrypt is based on Encryption for the Masses (E4M), an open source on-the-fly encryption program first released in 1997. However, E4M was discontinued in 2000 as the author, Paul Le Roux, began working on commercial encryption software. |
Newspaper vending machine | A newspaper vending machine or newspaper rack is a vending machine designed to distribute newspapers. Newspaper vending machines are used worldwide, and they are often one of the main distribution methods for newspaper publishers.
According to the Newspaper Association of America, in recent times in the United States, ... |
Superior potato | Superior is a white-skinned, white-fleshed, mid-season potato variety. It was released by the University of Wisconsin potato breeding program in 1962, and is not under plant variety protection. It is a progeny of a cross between 'B96-56' and 'M59.44' and was first grown in 1951. 'B96-56' was also a parent of Kennebec. ... |
Ailles rectangle | The Ailles rectangle is a rectangle constructed from four right-angled triangles which is commonly used in geometry classes to find the values of trigonometric functions of 15° and 75°. It is named after Douglas S. Ailles who was a high school teacher at Kipling Collegiate Institute in Toronto. |
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