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https://en.wikipedia.org/wiki/Leak-down%20tester
A leak-down tester is a measuring instrument used to determine the condition of internal combustion engines by introducing compressed air into the cylinder and measuring the rate at which it leaks out. Compression testing is a crude form of leak-down testing which also includes effects due to compression ratio, valve ...
Leak-down tester
[ "Technology", "Engineering" ]
1,513
[ "Engine tuning instruments", "Mechanical engineering", "Measuring instruments" ]
7,102,909
https://en.wikipedia.org/wiki/Moving-cluster%20method
In astrometry, the moving-cluster method and the closely related convergent point method are means, primarily of historical interest, for determining the distance to star clusters. They were used on several nearby clusters in the first half of the 1900s to determine distance. The moving-cluster method is now largely su...
Moving-cluster method
[ "Astronomy" ]
515
[ "Galactic astronomy", "Astrometry", "Astronomical sub-disciplines" ]
7,103,365
https://en.wikipedia.org/wiki/Component%20television
Component television is a form factor in which a television set is sold as a system of separate components, similar to audio components. For example, a component television system is a monitor, tuner and speakers sold separately and which can be integrated into a single system. The component television form factor beg...
Component television
[ "Engineering" ]
95
[ "Electronic engineering", "Video hardware" ]
7,103,913
https://en.wikipedia.org/wiki/SN%202003fg
SN 2003fg, nicknamed the Champagne Supernova, was an unusual Type Ia supernova. It was discovered in 2003, with the Canada-France-Hawaii Telescope and the Keck Telescope, both on Mauna Kea in Hawaii, and announced by researchers at the University of Toronto. The supernova occurred in a galaxy some 4 billion light-year...
SN 2003fg
[ "Chemistry", "Astronomy" ]
476
[ "Supernovae", "Astronomical events", "Boötes", "Constellations", "Explosions" ]
7,104,097
https://en.wikipedia.org/wiki/Extended%20Validation%20Certificate
An Extended Validation (EV) Certificate is a certificate conforming to X.509 that proves the legal entity of the owner and is signed by a certificate authority key that can issue EV certificates. EV certificates can be used in the same manner as any other X.509 certificates, including securing web communications with H...
Extended Validation Certificate
[ "Technology" ]
1,981
[ "Information technology", "E-commerce" ]
7,104,225
https://en.wikipedia.org/wiki/List%20of%20Bluetooth%20profiles
In order to use Bluetooth, a device must be compatible with the subset of Bluetooth profiles (often called services or functions) necessary to use the desired services. A Bluetooth profile is a specification regarding an aspect of Bluetooth-based wireless communication between devices. It resides on top of the Bluetoot...
List of Bluetooth profiles
[ "Technology" ]
5,216
[ "Wireless networking", "Bluetooth" ]
7,104,660
https://en.wikipedia.org/wiki/Metal-induced%20crystallization
Combined with certain metallic species, amorphous films can crystallize in a process known as metal-induced crystallization (MIC). The effect was discovered in 1969, when amorphous germanium (a-Ge) films crystallized at surprisingly low temperatures when in contact with Al, Ag, Cu, or Sn. The effect was also verified i...
Metal-induced crystallization
[ "Physics", "Chemistry", "Materials_science", "Engineering" ]
334
[ "Microtechnology", "Materials science", "Chemical processes", "Semiconductor device fabrication", "Crystallography", "Condensed matter physics", "nan", "Chemical process engineering" ]
7,105,177
https://en.wikipedia.org/wiki/Tropomodulin
Tropomodulin (TMOD) is a protein which binds and caps the minus end of actin (the "pointed" end), regulating the length of actin filaments in muscle and non-muscle cells. The protein functions by physically blocking the spontaneous dissociation of ADP-bound actin monomers from the minus end of the actin fibre. This, a...
Tropomodulin
[ "Chemistry" ]
1,760
[ "Biochemistry stubs", "Protein stubs" ]
7,105,280
https://en.wikipedia.org/wiki/Handbra
A handbra (also hand bra or hand-bra) is the practice of covering female nipples and areolae with hands or arms. It often is done in compliance with censors' guidelines, public authorities and community standards when female breasts are required to be covered in film or other media. If the arms are used instead of the ...
Handbra
[ "Biology" ]
996
[ "Behavior", "Human positions", "Human behavior" ]
7,106,579
https://en.wikipedia.org/wiki/Business%20support%20system
Business support systems (BSS) are the components that a telecommunications service provider (or telco) uses to run its business operations towards customers. Together with operations support systems (OSS), they are used to support various end-to-end telecommunication services (e.g., telephone services). BSS and OSS h...
Business support system
[ "Technology" ]
894
[ "Telecommunications systems" ]
7,107,008
https://en.wikipedia.org/wiki/Critical%20relative%20humidity
The critical relative humidity (CRH) of a salt is defined as the relative humidity of the surrounding atmosphere (at a certain temperature) at which the material begins to absorb moisture from the atmosphere and below which it will not absorb atmospheric moisture. When the humidity of the atmosphere is equal to (or is...
Critical relative humidity
[ "Physics", "Chemistry", "Mathematics" ]
346
[ "Physical phenomena", "Physical quantities", "Quantity", "nan", "Physical properties" ]
7,107,162
https://en.wikipedia.org/wiki/Calcium-binding%20protein
Calcium-binding proteins are proteins that participate in calcium cell signaling pathways by binding to Ca2+, the calcium ion that plays an important role in many cellular processes. Calcium-binding proteins have specific domains that bind to calcium and are known to be heterogeneous. One of the functions of calcium b...
Calcium-binding protein
[ "Chemistry" ]
836
[ "Calcium signaling", "Signal transduction" ]
7,107,398
https://en.wikipedia.org/wiki/Anton%20Vamplew
Anton Vamplew, (born 6 February 1966, in Rainham, Kent) is an English amateur astronomer, author, lecturer and media presenter of the subject. Biography He joined Mid-Kent Astronomical Society in 1979, later becoming chairman and editor of the society's quarterly journal, Pegasus. His first radio appearance was on BB...
Anton Vamplew
[ "Astronomy" ]
761
[ "Astronomers", "Amateur astronomers" ]
7,107,907
https://en.wikipedia.org/wiki/Power%20shovel
A power shovel, also known as a motor shovel, stripping shovel, front shovel, mining shovel or rope shovel, is a bucket-equipped machine usually powered by steam, diesel fuel, gasoline or electricity and used for digging and loading earth or fragmented rock and for mineral extraction. Power shovels are a type of rope/c...
Power shovel
[ "Engineering" ]
914
[ "Engineering vehicles", "Stripping shovels", "Mining equipment" ]
7,108,375
https://en.wikipedia.org/wiki/Content%20adaptation
Content adaptation is the action of transforming content to adapt to device capabilities. Content adaptation is usually related to mobile devices, which require special handling because of their limited computational power, small screen size, and constrained keyboard functionality. Content adaptation could roughly be...
Content adaptation
[ "Engineering" ]
899
[ "Software engineering", "Web development" ]
7,108,409
https://en.wikipedia.org/wiki/Trojan%20%28celestial%20body%29
In astronomy, a trojan is a small celestial body (mostly asteroids) that shares the orbit of a larger body, remaining in a stable orbit approximately 60° ahead of or behind the main body near one of its Lagrangian points and . Trojans can share the orbits of planets or of large moons. Trojans are one type of co-orbit...
Trojan (celestial body)
[ "Astronomy" ]
1,182
[ "Outer space", "Solar System" ]
9,225,925
https://en.wikipedia.org/wiki/Air%20draft
Air draft (or air draught) is the distance from the surface of the water to the highest point on a vessel. This is similar to the deep draft of a vessel which is measured from the surface of the water to the deepest part of the hull below the surface. However, air draft is expressed as a height (positive upward), while...
Air draft
[ "Physics", "Mathematics" ]
391
[ "Vertical extent", "Physical quantities", "Quantity", "Size", "Wikipedia categories named after physical quantities" ]
9,226,144
https://en.wikipedia.org/wiki/The%20Reckoning%20of%20Time
The Reckoning of Time (, CPL 2320) is an English era treatise written in Medieval Latin by the Northumbrian monk Bede in 725. Background In mid-7th-century Anglo-Saxon England, there was a desire to see the Easter season less closely tied to the Jewish Passover calendar as well as a desire to have Easter observed on ...
The Reckoning of Time
[ "Physics" ]
1,185
[ "Calendars", "Physical quantities", "Time", "Time in religion", "Spacetime" ]
9,226,345
https://en.wikipedia.org/wiki/Hat%20notation
A "hat" (circumflex (ˆ)), placed over a symbol is a mathematical notation with various uses. Estimated value In statistics, a circumflex (ˆ), called a "hat", is used to denote an estimator or an estimated value. For example, in the context of errors and residuals, the "hat" over the letter indicates an observable est...
Hat notation
[ "Mathematics" ]
370
[ "Algebra", "Algebra stubs", "nan" ]
9,226,504
https://en.wikipedia.org/wiki/54P/de%20Vico%E2%80%93Swift%E2%80%93NEAT
54P/de Vico–Swift–NEAT is a periodic comet in the Solar System first discovered by Father Francesco de Vico (Rome, Italy) on August 23, 1844. It has become a lost comet several times after its discovery. The comet makes many close approaches to Jupiter. The comet was last observed on 20 December 2009 by Ageo Observator...
54P/de Vico–Swift–NEAT
[ "Astronomy" ]
569
[ "Recovered astronomical objects", "Astronomical objects" ]
9,227,425
https://en.wikipedia.org/wiki/Stockholm%20Environment%20Institute%20US%20Center
The Stockholm Environment Institute (SEI) is an international research organization focusing on the issue of sustainable development. SEI has its headquarters in Stockholm with a network structure of permanent and associated staff worldwide and with centres the US, York (UK), Oxford (UK), Tallinn (Estonia), and Bangkok...
Stockholm Environment Institute US Center
[ "Environmental_science" ]
345
[ "Environmental research institutes", "Environmental research" ]
9,227,595
https://en.wikipedia.org/wiki/Santalum%20album
Santalum album is a small tropical tree, and the traditional source of sandalwood oil. It is native to Indonesia (Java and the Lesser Sunda Islands), the Philippines, and Western Australia. It is commonly known as the true sandalwood, white sandalwood, or Indian sandalwood. It was one of the plants exploited by Austron...
Santalum album
[ "Chemistry" ]
2,148
[ "Essential oils", "Natural products" ]
9,227,625
https://en.wikipedia.org/wiki/Ed%20Pegg%20Jr.
Edward Taylor Pegg Jr. (born December 7, 1963) is an expert on mathematical puzzles and is a self-described recreational mathematician. He wrote an online puzzle column called Ed Pegg Jr.'s Math Games for the Mathematical Association of America during the years 2003–2007. His puzzles have also been used by Will Shortz ...
Ed Pegg Jr.
[ "Mathematics" ]
291
[ "Recreational mathematics", "Recreational mathematicians" ]
9,228,002
https://en.wikipedia.org/wiki/Self-protein
Self-protein refers to all proteins endogenously produced by DNA-level transcription and translation within an organism of interest. This does not include proteins synthesized due to viral infection, but may include those synthesized by commensal bacteria within the intestines. Proteins that are not created within the ...
Self-protein
[ "Biology" ]
716
[ "Immunology" ]
9,228,246
https://en.wikipedia.org/wiki/Quadratic%20growth
In mathematics, a function or sequence is said to exhibit quadratic growth when its values are proportional to the square of the function argument or sequence position. "Quadratic growth" often means more generally "quadratic growth in the limit", as the argument or sequence position goes to infinity – in big Theta not...
Quadratic growth
[ "Mathematics" ]
413
[ "Mathematical analysis", "Asymptotic analysis", "Mathematical analysis stubs" ]
9,228,804
https://en.wikipedia.org/wiki/Wi-Fi%20Protected%20Setup
Wi-Fi Protected Setup (WPS), originally Wi-Fi Simple Config, is a network security standard to create a secure wireless home network. Created by Cisco and introduced in 2006, the purpose of the protocol is to allow home users who know little of wireless security and may be intimidated by the available security options...
Wi-Fi Protected Setup
[ "Technology" ]
2,776
[ "Wireless networking", "Wi-Fi" ]
9,229,683
https://en.wikipedia.org/wiki/DEPTHX
The Deep Phreatic Thermal Explorer (DEPTHX) is an autonomous underwater vehicle designed and built by Stone Aerospace, an aerospace engineering firm based in Austin, Texas. It was designed to autonomously explore and map underwater sinkholes in northern Mexico, as well as collect water and wall core samples. This coul...
DEPTHX
[ "Astronomy", "Biology" ]
1,023
[ "Origin of life", "Speculative evolution", "Astrobiology", "Biological hypotheses", "Astronomical sub-disciplines" ]
9,230,934
https://en.wikipedia.org/wiki/A%20Dream%20Within%20a%20Dream
"A Dream Within a Dream" is a poem written by American poet Edgar Allan Poe, first published in 1849. The poem has 24 lines, divided into two stanzas. Analysis The poem dramatizes the confusion felt by the narrator as he watches the important things in life slip away. Realizing he cannot hold on to even one grain of s...
A Dream Within a Dream
[ "Biology" ]
648
[ "Dream", "Behavior", "Sleep" ]
9,231,406
https://en.wikipedia.org/wiki/Educational%20Broadband%20Service
The Educational Broadband Service (EBS) was formerly known as the Instructional Television Fixed Service (ITFS). ITFS was a band of twenty (20) microwave TV channels available to be licensed by the U.S. Federal Communications Commission (FCC) to local credit granting educational institutions. It was designed to serve ...
Educational Broadband Service
[ "Engineering" ]
1,568
[ "Electronic engineering", "Network access" ]
9,231,515
https://en.wikipedia.org/wiki/Self-flagellation
Self-flagellation is the disciplinary and devotional practice of flogging oneself with whips or other instruments that inflict pain. In Christianity, self-flagellation is practiced in the context of the doctrine of the mortification of the flesh and is seen as a spiritual discipline. It is often used as a form of penan...
Self-flagellation
[ "Biology" ]
1,566
[ "Behavior", "Religious practices", "Human behavior" ]
9,232,272
https://en.wikipedia.org/wiki/Geometrical%20properties%20of%20polynomial%20roots
In mathematics, a univariate polynomial of degree with real or complex coefficients has complex roots, if counted with their multiplicities. They form a multiset of points in the complex plane. This article concerns the geometry of these points, that is the information about their localization in the complex plane t...
Geometrical properties of polynomial roots
[ "Mathematics" ]
3,580
[ "Polynomials", "Algebra" ]
9,232,391
https://en.wikipedia.org/wiki/Risk-based%20testing
Risk-based testing (RBT) is a type of software testing that functions as an organizational principle used to prioritize the tests of features and functions in software, based on the risk of failure, the function of their importance and likelihood or impact of failure. In theory, there are an infinite number of possible...
Risk-based testing
[ "Engineering" ]
646
[ "Software engineering", "Software testing", "Software engineering stubs" ]
9,233,284
https://en.wikipedia.org/wiki/Reef%20Ball%20Foundation
Reef Ball Foundation, Inc. is a 501(c)(3) non-profit organization that functions as an international environmental non-governmental organization. The foundation uses reef ball artificial reef technology, combined with coral propagation, transplant technology, public education, and community training to build, restore a...
Reef Ball Foundation
[ "Chemistry", "Engineering", "Biology" ]
1,195
[ "Coral reefs", "Chemical engineering", "Biogeomorphology", "Civil engineering", "Environmental engineering" ]
9,233,359
https://en.wikipedia.org/wiki/Vibrational%20circular%20dichroism
Vibrational circular dichroism (VCD) is a spectroscopic technique which detects differences in attenuation of left and right circularly polarized light passing through a sample. It is the extension of circular dichroism spectroscopy into the infrared and near infrared ranges. Because VCD is sensitive to the mutual ori...
Vibrational circular dichroism
[ "Physics", "Chemistry", "Biology" ]
1,546
[ "Biomolecules by chemical classification", "Quantum mechanics", "Theoretical chemistry", "Proteins", "Spectroscopy", "Physical chemistry", "Biophysics", " molecular", "Peptides", " and optical physics", "Spectrum (physical sciences)", "Molecular geometry", "Atomic", "Nucleic acids", "App...
9,233,368
https://en.wikipedia.org/wiki/Dye%20tracing
Dye tracing is a method of tracking and tracing various flows using dye as a flow tracer when added to a liquid. Dye tracing may be used to analyse the flow of the liquid or the transport of objects within the liquid. Dye tracking may be either qualitative, showing the presence of a particular flow, or quantitative, wh...
Dye tracing
[ "Chemistry", "Technology", "Engineering", "Environmental_science" ]
644
[ "Data collection", "Hydrology", "Data", "Environmental engineering" ]
9,234,084
https://en.wikipedia.org/wiki/Fluorometer
A fluorometer, fluorimeter or fluormeter is a device used to measure parameters of visible spectrum fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. These parameters are used to identify the presence and the amount of specific molecules in a ...
Fluorometer
[ "Physics", "Chemistry", "Technology", "Engineering" ]
1,573
[ "Spectrum (physical sciences)", "Electromagnetic radiation meters", "Electromagnetic spectrum", "Measuring instruments", "Spectrometers", "Spectroscopy" ]
9,234,323
https://en.wikipedia.org/wiki/Urban%20ecosystem
In ecology, urban ecosystems are considered a ecosystem functional group within the intensive land-use biome. They are structurally complex ecosystems with highly heterogeneous and dynamic spatial structure that is created and maintained by humans. They include cities, smaller settlements and industrial areas, that are...
Urban ecosystem
[ "Biology", "Environmental_science" ]
1,779
[ "Environmental social science", "Symbiosis", "Ecosystems", "Systems ecology" ]
9,234,631
https://en.wikipedia.org/wiki/Motorola%20Minitor
The Motorola Minitor is a portable, analog, receive only, voice pager typically carried by civil defense organizations such as fire, rescue, and EMS personnel (both volunteer and career) to alert of emergencies. The Minitor, slightly smaller than a pack of cigarettes, is carried on a person and usually left in selectiv...
Motorola Minitor
[ "Technology" ]
2,359
[ "Pagers", "Radio paging" ]
9,234,672
https://en.wikipedia.org/wiki/Home%20automation%20for%20the%20elderly%20and%20disabled
Home automation for the elderly and disabled focuses on making it possible for older adults and people with disabilities to remain at home, safe and comfortable. Home automation is becoming a viable option for older adults and people with disabilities who would prefer to stay in the comfort of their homes rather than m...
Home automation for the elderly and disabled
[ "Technology", "Biology" ]
2,446
[ "Home automation", "Gerontology" ]
9,235,009
https://en.wikipedia.org/wiki/Records%20of%20Early%20English%20Drama
The Records of Early English Drama (REED) is a performance history research project, based at the University of Toronto, Ontario, Canada. It was founded in 1976 by a group of international scholars interested in understanding “the native tradition of English playmaking that apparently flourished in late medieval provin...
Records of Early English Drama
[ "Technology" ]
1,370
[ "Digital humanities", "Computing and society" ]
9,235,239
https://en.wikipedia.org/wiki/GRO%20J1655%E2%88%9240
GRO J1655−40 is a binary star consisting of an evolved F-type primary star and a massive, unseen companion, which orbit each other once every 2.6 days in the constellation of Scorpius. Gas from the surface of the visible star is accreted onto the dark companion, which appears to be a stellar black hole with several ti...
GRO J1655−40
[ "Physics", "Astronomy" ]
578
[ "Black holes", "Stellar black holes", "Unsolved problems in physics", "Constellations", "Scorpius" ]
9,236,652
https://en.wikipedia.org/wiki/N%C3%A9ron%E2%80%93Tate%20height
In number theory, the Néron–Tate height (or canonical height) is a quadratic form on the Mordell–Weil group of rational points of an abelian variety defined over a global field. It is named after André Néron and John Tate. Definition and properties Néron defined the Néron–Tate height as a sum of local heights. Althou...
Néron–Tate height
[ "Mathematics" ]
1,173
[ "Discrete mathematics", "Fields of abstract algebra", "Algebraic geometry", "Abc conjecture", "Number theory" ]
9,237,787
https://en.wikipedia.org/wiki/The%20Californian%20Ideology
"The Californian Ideology" is a 1995 essay by English media theorists Richard Barbrook and Andy Cameron of the University of Westminster. Barbrook calls it a "critique of dotcom neoliberalism". In the essay, Barbrook and Cameron argue that the rise of networking technologies in Silicon Valley in the 1990s was linked to...
The Californian Ideology
[ "Technology", "Engineering", "Biology" ]
1,933
[ "Computing culture", "Genetic engineering", "Transhumanism", "Computing and society", "Ethics of science and technology" ]
9,237,823
https://en.wikipedia.org/wiki/Verizon%20Business
Verizon Business (formerly known as Verizon Enterprise Solutions) is a division of Verizon Communications based in Basking Ridge, New Jersey, that provides services and products for Verizon's business and government clients. It was formed as Verizon Business in January 2006 and relaunched as Verizon Enterprise Soluti...
Verizon Business
[ "Technology" ]
1,306
[ "Cloud platforms", "Computing platforms" ]
9,238,407
https://en.wikipedia.org/wiki/Renewable%20portfolio%20standards%20in%20the%20United%20States
A Renewable Portfolio Standard (RPS) is a regulation that requires the increased production of energy from renewable energy sources, such as wind, solar, biomass, and geothermal, which have been adopted in 38 of 50 U.S. states and the District of Columbia. The United States federal RPS is called the Renewable Electrici...
Renewable portfolio standards in the United States
[ "Environmental_science" ]
3,284
[ "Environmental social science", "Energy policy" ]
9,238,494
https://en.wikipedia.org/wiki/Biosocial%20theory
Biosocial theory is a theory in behavioral and social science that describes personality disorders and mental illnesses and disabilities as biologically-determined personality traits reacting to environmental stimuli. Biosocial theory also explains the shift from evolution to culture when it comes to gender and mate s...
Biosocial theory
[ "Biology" ]
410
[ "Behavioural sciences", "Behavior", "Sociobiology" ]
9,238,840
https://en.wikipedia.org/wiki/Speiss
Speisses are alloys of heavy metals like iron, cobalt, nickel and copper with arsenic, antimony and, occasionally, tin. The latter elements lower the melting point to around 1000 °C. Speisses commonly occur in lead smelting operations and copper smelting operations. Speisses are only partially miscible with mattes, ...
Speiss
[ "Chemistry", "Materials_science" ]
196
[ "Metallurgical processes", "Metallurgy" ]
9,239,056
https://en.wikipedia.org/wiki/Matte%20%28metallurgy%29
Matte is a term used in the field of pyrometallurgy given to the molten metal sulfide phases typically formed during smelting of copper, nickel, and other base metals. Typically, a matte is the phase in which the principal metal being extracted is recovered prior to a final reduction process (usually converting) to pro...
Matte (metallurgy)
[ "Chemistry", "Materials_science", "Engineering" ]
182
[ "Metallurgy", "Materials science stubs", "Materials science", "nan" ]
9,239,161
https://en.wikipedia.org/wiki/Rainbow%20Herbicides
The Rainbow Herbicides are a group of tactical-use chemical weapons used by the United States military in Southeast Asia during the Vietnam War. Success with Project AGILE field tests in 1961 with herbicides in South Vietnam was inspired by the British use of herbicides and defoliants during the Malayan Emergency in th...
Rainbow Herbicides
[ "Chemistry" ]
1,124
[ "Defoliants", "Chemical weapons" ]
9,239,718
https://en.wikipedia.org/wiki/2000-watt%20society
The 2000-watt society concept, introduced in 1998 by the Swiss Federal Institute of Technology in Zurich (ETH Zurich), aims to reduce the average primary energy use of First World citizens to no more than 2,000 watts (equivalent to 2 kilowatt-hours per hour or 48 kilowatt-hours per day) by 2050, without compromising th...
2000-watt society
[ "Engineering", "Environmental_science" ]
1,549
[ "Environmental design", "Design", "Environmental social science", "Energy policy" ]
9,239,738
https://en.wikipedia.org/wiki/Carboxylation
Carboxylation is a chemical reaction in which a carboxylic acid is produced by treating a substrate with carbon dioxide. The opposite reaction is decarboxylation. In chemistry, the term carbonation is sometimes used synonymously with carboxylation, especially when applied to the reaction of carbanionic reagents with CO...
Carboxylation
[ "Chemistry" ]
650
[ "Organic reactions", "Post-translational modification", "Gene expression", "Biochemical reactions" ]
9,239,903
https://en.wikipedia.org/wiki/Retractable%20roof
A retractable roof is a roof system designed to roll back the roof of a structure so that the interior of the facility is open to the outdoors. Retractable roofs are sometimes referred to as operable roofs or retractable skylights. The term operable skylight, while quite similar, refers to a skylight that opens on a hi...
Retractable roof
[ "Technology", "Engineering" ]
1,309
[ "Structural engineering", "Building engineering", "Architecture", "Structural system", "Architectural elements", "Roofs", "Components" ]
154,076
https://en.wikipedia.org/wiki/Epiphany%20%28feeling%29
An epiphany (from the ancient Greek ἐπιφάνεια, epiphanea, "manifestation, striking appearance") is an experience of a sudden and striking realization. Generally the term is used to describe a scientific breakthrough or a religious or philosophical discovery, but it can apply in any situation in which an enlightening re...
Epiphany (feeling)
[ "Biology" ]
1,791
[ "Behavior", "Religious practices", "Human behavior" ]
154,147
https://en.wikipedia.org/wiki/Limerence
Limerence is a state of mind resulting from romantic feelings for another person. It typically involves intrusive and melancholic thoughts, or tragic concerns for the object of one's affection, along with a desire for the reciprocation of one's feelings and to form a relationship with the object of love. Psychologist ...
Limerence
[ "Biology" ]
11,305
[ "Behavior", "Psychology", "Sexology", "Behavioural sciences", "Interpersonal relationships", "Human behavior" ]
154,156
https://en.wikipedia.org/wiki/Cloak
A cloak is a type of loose garment worn over clothing, mostly but not always as outerwear for outdoor wear, serving the same purpose as an overcoat, protecting the wearer from the weather. It may form part of a uniform. People in many different societies may wear cloaks. Over time cloak designs have changed to match f...
Cloak
[ "Engineering" ]
1,343
[ "Costume design", "Design" ]
154,163
https://en.wikipedia.org/wiki/Curry%27s%20paradox
Curry's paradox is a paradox in which an arbitrary claim F is proved from the mere existence of a sentence C that says of itself "If C, then F". The paradox requires only a few apparently-innocuous logical deduction rules. Since F is arbitrary, any logic having these rules allows one to prove everything. The paradox ma...
Curry's paradox
[ "Mathematics" ]
1,870
[ "Mathematical logic", "Basic concepts in infinite set theory", "Basic concepts in set theory", "Mathematical paradoxes", "Paradoxes of naive set theory", "Mathematical problems" ]
154,171
https://en.wikipedia.org/wiki/List%20of%20heritage%20railways
This list of heritage railways includes heritage railways sorted by country, state, or region. A heritage railway is a preserved or tourist railroad which is run as a tourist attraction, is usually but not always run by volunteers, and often seeks to re-create railway scenes of the past. Europe Austria Ampflwanger B...
List of heritage railways
[ "Engineering" ]
2,868
[ "Lists of heritage railways", "Heritage railways", "Engineering preservation societies" ]
154,176
https://en.wikipedia.org/wiki/Heritage%20railway
A heritage railway or heritage railroad (U.S. usage) is a railway operated as living history to re-create or preserve railway scenes of the past. Heritage railways are often old railway lines preserved in a state depicting a period (or periods) in the history of rail transport. Definition The British Office of Rail a...
Heritage railway
[ "Engineering" ]
6,028
[ "Engineering societies", "Heritage railways", "Engineering preservation societies" ]
154,231
https://en.wikipedia.org/wiki/List%20of%20heritage%20railways%20in%20Northern%20Ireland
There are currently two operating heritage railways in Northern Ireland. Operating heritage railways Downpatrick and County Down Railway is located on part of the former Belfast & County Down Railway and is Ireland's only heritage railway using the standard Irish track gauge of . It has approximately of track, with ...
List of heritage railways in Northern Ireland
[ "Engineering" ]
402
[ "Lists of heritage railways", "Engineering preservation societies" ]
154,233
https://en.wikipedia.org/wiki/List%20of%20heritage%20railways%20in%20the%20Republic%20of%20Ireland
There are a small number of heritage railways in the Republic of Ireland, reflecting Ireland's long history of rail transport. Some former operations have closed, and aspirant operations may have museums and even rolling stock, but no operating track. There are also working groups, which may run heritage rolling stock...
List of heritage railways in the Republic of Ireland
[ "Engineering" ]
587
[ "Lists of heritage railways", "Engineering preservation societies" ]
154,242
https://en.wikipedia.org/wiki/PH%20meter
A pH meter is a scientific instrument that measures the hydrogen-ion activity in water-based solutions, indicating its acidity or alkalinity expressed as pH. The pH meter measures the difference in electrical potential between a pH electrode and a reference electrode, and so the pH meter is sometimes referred to as a "...
PH meter
[ "Chemistry", "Technology", "Engineering" ]
2,872
[ "Acid–base chemistry", "Measuring instruments", "Scientific instruments", "Equilibrium chemistry", "Electrochemistry", "nan" ]
154,291
https://en.wikipedia.org/wiki/Ham%20%28chimpanzee%29
Ham (July 1957 – January 19, 1983), a chimpanzee also known as Ham the Chimp and Ham the Astrochimp, was the first non-human great ape launched into space. On January 31, 1961, Ham flew a suborbital flight on the Mercury-Redstone 2 mission, part of the U.S. space program's Project Mercury. Ham was known as "No 65" be...
Ham (chimpanzee)
[ "Chemistry", "Biology" ]
1,896
[ "Animal testing", "Space-flown life", "Animals in space" ]
154,456
https://en.wikipedia.org/wiki/Fathom
A fathom is a unit of length in the imperial and the U.S. customary systems equal to , used especially for measuring the depth of water. The fathom is neither an international standard (SI) unit, nor an internationally accepted non-SI unit. Historically it was the maritime measure of depth in the English-speaking world...
Fathom
[ "Mathematics" ]
1,626
[ "Quantity", "Units of measurement", "Units of length" ]
154,473
https://en.wikipedia.org/wiki/Fermi%20level
The Fermi level of a solid-state body is the thermodynamic work required to add one electron to the body. It is a thermodynamic quantity usually denoted by μ or EF for brevity. The Fermi level does not include the work required to remove the electron from wherever it came from. A precise understanding of the Fermi leve...
Fermi level
[ "Physics", "Chemistry", "Materials_science" ]
3,406
[ "Electron", "Electronic band structures", "Condensed matter physics" ]
154,487
https://en.wikipedia.org/wiki/Parkway
A parkway is a landscaped thoroughfare. The term is particularly used for a roadway in a park or connecting to a park from which trucks and other heavy vehicles are excluded. Over the years, many different types of roads have been labeled parkways. The term may be used to describe city streets as narrow as two lanes w...
Parkway
[ "Engineering" ]
2,341
[ "Environmental design", "Design" ]
154,502
https://en.wikipedia.org/wiki/Type%202%20diabetes
Type 2 diabetes (T2D), formerly known as adult-onset diabetes, is a form of diabetes mellitus that is characterized by high blood sugar, insulin resistance, and relative lack of insulin. Common symptoms include increased thirst, frequent urination, fatigue and unexplained weight loss. Other symptoms include increased h...
Type 2 diabetes
[ "Biology" ]
5,780
[ "Senescence", "Aging-associated diseases" ]
154,505
https://en.wikipedia.org/wiki/Digital%20signal%20processor
A digital signal processor (DSP) is a specialized microprocessor chip, with its architecture optimized for the operational needs of digital signal processing. DSPs are fabricated on metal–oxide–semiconductor (MOS) integrated circuit chips. They are widely used in audio signal processing, telecommunications, digital ima...
Digital signal processor
[ "Technology", "Engineering" ]
3,335
[ "Hardware acceleration", "Computer engineering", "Computer systems", "Electrical engineering", "Integrated circuits" ]
154,576
https://en.wikipedia.org/wiki/Cloud%20cover
Cloud cover (also known as cloudiness, cloudage, or cloud amount) refers to the fraction of the sky obscured by clouds on average when observed from a particular location. Okta is the usual unit for measurement of the cloud cover. The cloud cover is correlated to the sunshine duration as the least cloudy locales are th...
Cloud cover
[ "Chemistry" ]
830
[ "Atmospheric dynamics", "Fluid dynamics" ]
154,581
https://en.wikipedia.org/wiki/Shortwave%20radiation%20%28optics%29
Shortwave radiation (SW) is thermal radiation in the optical spectrum, including visible (VIS), near-ultraviolet (UV), and near-infrared (NIR) spectra. There is no standard cut-off for the near-infrared range; therefore, the shortwave radiation range is also variously defined. It may be broadly defined to include all ...
Shortwave radiation (optics)
[ "Physics" ]
489
[ "Waves", "Physical phenomena", "Motion (physics)" ]
154,584
https://en.wikipedia.org/wiki/Hilbert%27s%20problems
Hilbert's problems are 23 problems in mathematics published by German mathematician David Hilbert in 1900. They were all unsolved at the time, and several proved to be very influential for 20th-century mathematics. Hilbert presented ten of the problems (1, 2, 6, 7, 8, 13, 16, 19, 21, and 22) at the Paris conference of ...
Hilbert's problems
[ "Mathematics" ]
2,346
[ "Hilbert's problems", "Unsolved problems in mathematics", "Mathematical problems" ]
154,616
https://en.wikipedia.org/wiki/Negative%20number
In mathematics, a negative number is the opposite of a positive real number. Equivalently, a negative number is a real number that is less than zero. Negative numbers are often used to represent the magnitude of a loss or deficiency. A debt that is owed may be thought of as a negative asset. If a quantity, such as the ...
Negative number
[ "Mathematics" ]
4,256
[ "Elementary arithmetic", "Mathematical objects", "Elementary mathematics", "Arithmetic", "Numbers" ]
154,664
https://en.wikipedia.org/wiki/Turbulence
In fluid dynamics, turbulence or turbulent flow is fluid motion characterized by chaotic changes in pressure and flow velocity. It is in contrast to laminar flow, which occurs when a fluid flows in parallel layers with no disruption between those layers. Turbulence is commonly observed in everyday phenomena such as s...
Turbulence
[ "Physics", "Chemistry", "Engineering" ]
5,097
[ "Transport phenomena", "Physical phenomena", "Turbulence", "Chemical engineering", "Aerodynamics", "Flow regimes", "nan", "Aerospace engineering", "Piping", "Fluid dynamics" ]
154,665
https://en.wikipedia.org/wiki/Vortex
In fluid dynamics, a vortex (: vortices or vortexes) is a region in a fluid in which the flow revolves around an axis line, which may be straight or curved. Vortices form in stirred fluids, and may be observed in smoke rings, whirlpools in the wake of a boat, and the winds surrounding a tropical cyclone, tornado or dus...
Vortex
[ "Physics", "Chemistry", "Mathematics", "Engineering" ]
3,689
[ "Physical phenomena", "Vortices", "Dynamical systems", "Chemical engineering", "Classical mechanics", "Rotation", "Aerodynamics", "Motion (physics)", "Aerospace engineering", "Piping", "Fluid dynamics" ]
154,675
https://en.wikipedia.org/wiki/Allied%20military%20phonetic%20spelling%20alphabets
The Allied military phonetic spelling alphabets prescribed the words that are used to represent each letter of the alphabet, when spelling other words out loud, letter-by-letter, and how the spelling words should be pronounced for use by the Allies of World War II. They are not a "phonetic alphabet" in the sense in whi...
Allied military phonetic spelling alphabets
[ "Engineering" ]
1,885
[ "Military communications", "Telecommunications engineering" ]
154,711
https://en.wikipedia.org/wiki/Aerospace
Aerospace is a term used to collectively refer to the atmosphere and outer space. Aerospace activity is very diverse, with a multitude of commercial, industrial, and military applications. Aerospace engineering consists of aeronautics and astronautics. Aerospace organizations research, design, manufacture, operate, mai...
Aerospace
[ "Physics" ]
4,230
[ "Spacetime", "Space", "Aerospace" ]
154,738
https://en.wikipedia.org/wiki/Hydrogen%20sulfide
Hydrogen sulfide is a chemical compound with the formula . It is a colorless chalcogen-hydride gas, and is poisonous, corrosive, and flammable, with trace amounts in ambient atmosphere having a characteristic foul odor of rotten eggs. Swedish chemist Carl Wilhelm Scheele is credited with having discovered the chemical...
Hydrogen sulfide
[ "Physics", "Chemistry" ]
6,213
[ "Acids", "Chemical weapons", "Molecules", "Signal transduction", "Gaseous signaling molecules", "Triatomic molecules", "Industrial gases", "Blood agents", "Chemical process engineering", "Matter" ]
154,750
https://en.wikipedia.org/wiki/Zirconium%20dioxide
Zirconium dioxide (), sometimes known as zirconia (not to be confused with zirconium silicate or zircon), is a white crystalline oxide of zirconium. Its most naturally occurring form, with a monoclinic crystalline structure, is the mineral baddeleyite. A dopant stabilized cubic structured zirconia, cubic zirconia, is s...
Zirconium dioxide
[ "Physics", "Engineering", "Biology" ]
1,829
[ "Biomaterials", "Refractory materials", "Materials", "Ceramic materials", "Ceramic engineering", "Matter", "Medical technology" ]
154,838
https://en.wikipedia.org/wiki/Podkamennaya%20Tunguska
The Podkamennaya Tunguska (, literally Tunguska under the stones; , Ket: Ӄо’ль) also known as Middle Tunguska or Stony Tunguska, is a river in Krasnoyarsk Krai, Russia. History In 1908, an asteroid impacted near the river and later became known as the Tunguska event. Hydrology The river's nutrition is mainly snow (6...
Podkamennaya Tunguska
[ "Physics" ]
369
[ "Unsolved problems in physics", "Tunguska event" ]
154,851
https://en.wikipedia.org/wiki/Reentrancy%20%28computing%29
Reentrancy is a programming concept where a function or subroutine can be interrupted and then resumed before it finishes executing. This means that the function can be called again before it completes its previous execution. Reentrant code is designed to be safe and predictable when multiple instances of the same func...
Reentrancy (computing)
[ "Mathematics" ]
2,442
[ "Mathematical logic", "Recursion" ]
154,877
https://en.wikipedia.org/wiki/Weather%20balloon
A weather balloon, also known as a sounding balloon, is a balloon (specifically a type of high-altitude balloon) that carries instruments to the stratosphere to send back information on atmospheric pressure, temperature, humidity and wind speed by means of a small, expendable measuring device called a radiosonde. To ob...
Weather balloon
[ "Technology", "Engineering" ]
1,329
[ "Meteorological instrumentation and equipment", "Measuring instruments" ]
154,881
https://en.wikipedia.org/wiki/Heat%20index
The heat index (HI) is an index that combines air temperature and relative humidity, in shaded areas, to posit a human-perceived equivalent temperature, as how hot it would feel if the humidity were some other value in the shade. For example, when the temperature is with 70% relative humidity, the heat index is (see ...
Heat index
[ "Physics", "Mathematics" ]
1,724
[ "Quantity", "Physical quantities", "Meteorological quantities" ]
154,910
https://en.wikipedia.org/wiki/Wind%20chill
Wind chill (popularly wind chill factor) is the sensation of cold produced by the wind for a given ambient air temperature on exposed skin as the air motion accelerates the rate of heat transfer from the body to the surrounding atmosphere. Its values are always lower than the air temperature in the range where the form...
Wind chill
[ "Physics", "Mathematics" ]
1,485
[ "Units of meteorology measurement", "Physical quantities", "Quantity", "Meteorological quantities", "Units of measurement" ]
154,963
https://en.wikipedia.org/wiki/Dicyclic%20group
In group theory, a dicyclic group (notation Dicn or Q4n, ) is a particular kind of non-abelian group of order 4n (n > 1). It is an extension of the cyclic group of order 2 by a cyclic group of order 2n, giving the name di-cyclic. In the notation of exact sequences of groups, this extension can be expressed as: More g...
Dicyclic group
[ "Mathematics" ]
1,192
[ "Mathematical structures", "Algebraic structures", "Finite groups" ]
154,985
https://en.wikipedia.org/wiki/System%20administrator
An IT administrator, system administrator, sysadmin, or admin is a person who is responsible for the upkeep, configuration, and reliable operation of computer systems, especially multi-user computers, such as servers. The system administrator seeks to ensure that the uptime, performance, resources, and security of the ...
System administrator
[ "Technology", "Engineering" ]
1,594
[ "Computer engineering", "Computer occupations", "Computer systems", "System administration", "Information systems", "Computer science", "Information technology", "Computers" ]
155,019
https://en.wikipedia.org/wiki/Hanging
Hanging is killing a person by suspending them from the neck with a noose or ligature. Hanging has been a standard method of capital punishment since the Middle Ages, and has been the primary execution method in numerous countries and regions. The first known account of execution by hanging is in Homer's Odyssey. Hangi...
Hanging
[ "Biology" ]
9,147
[ "Behavior", "Human positions", "Human behavior" ]
155,131
https://en.wikipedia.org/wiki/Bruxism
Bruxism is excessive teeth grinding or jaw clenching. It is an oral parafunctional activity; i.e., it is unrelated to normal function such as eating or talking. Bruxism is a common behavior; the global prevalence of bruxism (both sleep and awake) is 22.22%. Several symptoms are commonly associated with bruxism, includ...
Bruxism
[ "Biology" ]
10,432
[ "Behavior", "Sleep", "Sleep disorders" ]
155,192
https://en.wikipedia.org/wiki/Chimera%20%28genetics%29
A genetic chimerism or chimera ( or ) is a single organism composed of cells with more than one distinct genotype. Animal chimeras can be produced by the fusion of two (or more) embryos. In plants and some animal chimeras, mosaicism involves distinct types of tissue that originated from the same zygote but differ due...
Chimera (genetics)
[ "Biology" ]
5,441
[ "Chimerism", "Biological interactions", "Behavior", "Reproduction" ]
155,214
https://en.wikipedia.org/wiki/Pudendal%20nerve
The pudendal nerve is the main nerve of the perineum. It is a mixed (motor and sensory) nerve and also conveys sympathetic autonomic fibers. It carries sensation from the external genitalia of both sexes and the skin around the anus and perineum, as well as the motor supply to various pelvic muscles, including the male...
Pudendal nerve
[ "Biology" ]
2,011
[ "Sexual anatomy", "Sex" ]
155,319
https://en.wikipedia.org/wiki/Data%20acquisition
Data acquisition is the process of sampling signals that measure real-world physical conditions and converting the resulting samples into digital numeric values that can be manipulated by a computer. Data acquisition systems, abbreviated by the acronyms DAS, DAQ, or DAU, typically convert analog waveforms into digital ...
Data acquisition
[ "Technology", "Engineering" ]
1,163
[ "Telecommunications engineering", "Computer engineering", "Signal processing", "Information technology", "Data" ]
155,350
https://en.wikipedia.org/wiki/Munsell%20color%20system
In colorimetry, the Munsell color system is a color space that specifies colors based on three properties of color: hue (basic color), value (lightness), and chroma (color intensity). It was created by Albert H. Munsell in the first decade of the 20th century and adopted by the United States Department of Agriculture (...
Munsell color system
[ "Mathematics" ]
2,265
[ "Color space", "Space (mathematics)", "Metric spaces" ]
155,407
https://en.wikipedia.org/wiki/Kleene%27s%20recursion%20theorem
In computability theory, Kleene's recursion theorems are a pair of fundamental results about the application of computable functions to their own descriptions. The theorems were first proved by Stephen Kleene in 1938 and appear in his 1952 book Introduction to Metamathematics. A related theorem, which constructs fi...
Kleene's recursion theorem
[ "Mathematics" ]
2,786
[ "Foundations of mathematics", "Mathematical logic", "Mathematical problems", "Mathematical theorems", "Computability theory", "Theorems in the foundations of mathematics" ]
155,414
https://en.wikipedia.org/wiki/Computability%20theory
Computability theory, also known as recursion theory, is a branch of mathematical logic, computer science, and the theory of computation that originated in the 1930s with the study of computable functions and Turing degrees. The field has since expanded to include the study of generalized computability and definability...
Computability theory
[ "Mathematics" ]
6,605
[ "Computability theory", "Mathematical logic" ]
155,430
https://en.wikipedia.org/wiki/Kleene%20algebra
In mathematics, a Kleene algebra ( ; named after Stephen Cole Kleene) is an idempotent (and thus partially ordered) semiring endowed with a closure operator. It generalizes the operations known from regular expressions. Definition Various inequivalent definitions of Kleene algebras and related structures have been g...
Kleene algebra
[ "Mathematics" ]
2,152
[ "Mathematical structures", "Mathematical logic", "Formal languages", "Mathematical objects", "Fields of abstract algebra", "Algebraic logic", "Algebraic structures" ]
155,443
https://en.wikipedia.org/wiki/Corrosion
Corrosion is a natural process that converts a refined metal into a more chemically stable oxide. It is the gradual deterioration of materials (usually a metal) by chemical or electrochemical reaction with their environment. Corrosion engineering is the field dedicated to controlling and preventing corrosion. In the m...
Corrosion
[ "Chemistry", "Materials_science", "Engineering" ]
7,008
[ "Glass engineering and science", "Glass chemistry", "Metallurgy", "Materials science", "Corrosion", "Electrochemistry", "nan", "Materials degradation" ]
155,544
https://en.wikipedia.org/wiki/Charles%27s%20law
Charles's law (also known as the law of volumes) is an experimental gas law that describes how gases tend to expand when heated. A modern statement of Charles's law is: When the pressure on a sample of a dry gas is held constant, the Kelvin temperature and the volume will be in direct proportion. This relationship of d...
Charles's law
[ "Chemistry", "Mathematics" ]
1,592
[ "Equations", "Mathematical objects", "Scientific laws", "Gas laws" ]
155,555
https://en.wikipedia.org/wiki/Image%20registration
Image registration is the process of transforming different sets of data into one coordinate system. Data may be multiple photographs, data from different sensors, times, depths, or viewpoints. It is used in computer vision, medical imaging, military automatic target recognition, and compiling and analyzing images and ...
Image registration
[ "Engineering" ]
2,289
[ "Artificial intelligence engineering", "Packaging machinery", "Computer vision" ]
155,558
https://en.wikipedia.org/wiki/Sandia%20National%20Laboratories
Sandia National Laboratories (SNL), also known as Sandia, is one of three research and development laboratories of the United States Department of Energy's National Nuclear Security Administration (NNSA). Headquartered in Kirtland Air Force Base in Albuquerque, New Mexico, it has a second principal facility next to Law...
Sandia National Laboratories
[ "Physics" ]
3,534
[ "Plasma physics facilities", "Plasma physics" ]
155,562
https://en.wikipedia.org/wiki/Bode%20plot
In electrical engineering and control theory, a Bode plot is a graph of the frequency response of a system. It is usually a combination of a Bode magnitude plot, expressing the magnitude (usually in decibels) of the frequency response, and a Bode phase plot, expressing the phase shift. As originally conceived by Hend...
Bode plot
[ "Technology", "Engineering" ]
4,011
[ "Telecommunications engineering", "Computer engineering", "Signal processing", "Electrical engineering", "Electronic amplifiers", "Amplifiers", "Electrical parameters" ]
155,625
https://en.wikipedia.org/wiki/Penetrance
Penetrance in genetics is the proportion of individuals carrying a particular variant (or allele) of a gene (genotype) that also expresses an associated trait (phenotype). In medical genetics, the penetrance of a disease-causing mutation is the proportion of individuals with the mutation that exhibit clinical symptoms ...
Penetrance
[ "Biology" ]
1,984
[ "Genetics" ]
155,627
https://en.wikipedia.org/wiki/Ibuprofen
Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) that is used to relieve pain, fever, and inflammation. This includes painful menstrual periods, migraines, and rheumatoid arthritis. It may also be used to close a patent ductus arteriosus in a premature baby. It can be taken orally (by mouth) or intravenously....
Ibuprofen
[ "Chemistry" ]
4,247
[ "Racemic mixtures", "Stereochemistry", "Chemical mixtures" ]