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Relay league
A relay league is a chain of message forwarding stations in a system of optical telegraphs, radio telegraph stations, or riding couriers. Early 19th century methods of this type evolved into the electrical telegraph networks of the mid-to-late 19th century.
Radio amateurs have been early in arranging rel... | https://en.wikipedia.org/wiki?curid=25521 |
History of radio
The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly in... | https://en.wikipedia.org/wiki?curid=25522 |
Richard Feynman
Richard Phillips Feynman ForMemRS (; May 11, 1918 – February 15, 1988) was an American theoretical physicist, known for his work in the path integral formulation of quantum mechanics, the theory of quantum electrodynamics, the physics of the superfluidity of supercooled liquid helium, as well as his wo... | https://en.wikipedia.org/wiki?curid=25523 |
Research
Research is "creative and systematic work undertaken to increase the stock of knowledge, including knowledge of humans, culture and society, and the use of this stock of knowledge to devise new applications." It involves the collection, organization, and analysis of information to increase our understanding o... | https://en.wikipedia.org/wiki?curid=25524 |
René Descartes
René Descartes ( or ; ; Latinized: Renatus Cartesius; adjectival form: "Cartesian", ; 31 March 1596 – 11 February 1650) was a French philosopher, mathematician, and scientist. A native of the Kingdom of France, he spent about 20 years (1629–1649) of his life in the Dutch Republic after serving for a whi... | https://en.wikipedia.org/wiki?curid=25525 |
Romansh language
Romansh (; sometimes also spelled Romansch, Rumantsch, or Romanche; Romansh: "rumantsch", "rumàntsch", "romauntsch" or "romontsch") is a Romance language spoken predominantly in the southeastern Swiss canton of Grisons (Graubünden). Romansh has been recognized as a national language of Switzerland sin... | https://en.wikipedia.org/wiki?curid=25529 |
Robert Rodriguez
Robert Anthony Rodriguez (; born June 20, 1968) is an American filmmaker and visual effects supervisor. He shoots, edits, produces, and scores many of his films in Mexico and in his home state of Texas. Rodriguez directed the 1992 action film "El Mariachi", which was a commercial success after grossin... | https://en.wikipedia.org/wiki?curid=25530 |
Romantic comedy
Romantic comedy (also known as romcom or rom-com) is a subgenre of comedy and slice-of-life fiction, focusing on lighthearted, humorous plot lines centered on romantic ideas, such as how true love is able to surmount most obstacles. One dictionary definition is "a funny movie, play, or television progr... | https://en.wikipedia.org/wiki?curid=25531 |
Renaissance
The Renaissance ( , ) was a period in European history marking the transition from the Middle Ages to Modernity and covering the 15th and 16th centuries. It occurred after the Crisis of the Late Middle Ages and was associated with great social change. In addition to the standard periodization, proponents o... | https://en.wikipedia.org/wiki?curid=25532 |
Rheged
Rheged () was one of the kingdoms of the "Hen Ogledd" ("Old North"), the Brittonic-speaking region of what is now Northern England and southern Scotland, during the post-Roman era and Early Middle Ages. It is recorded in several poetic and bardic sources, although its borders are not described in any of them. A... | https://en.wikipedia.org/wiki?curid=25533 |
Romanian language
Romanian (dated spellings: Rumanian or Roumanian; autonym: "limba română" , "the Romanian language", or "românește", lit. "in Romanian") is a Balkan Romance language spoken by approximately 24–26 million people as a native language, primarily in Romania and Moldova, and by another 4 million people as... | https://en.wikipedia.org/wiki?curid=25534 |
Republic
A republic (, meaning "public affair") is a form of government in which the country is considered a "public matter", not the private concern or property of the rulers. The primary positions of power within a republic are attained, through democracy, oligarchy, or a mix thereof, rather than being unalterably o... | https://en.wikipedia.org/wiki?curid=25536 |
Robyn
Robin Miriam Carlsson (born 12 June 1979), known as Robyn (), is a Swedish singer, songwriter, record producer and DJ. She arrived on the music scene with her 1995 debut album, "Robyn Is Here", which produced two US "Billboard" Hot 100 top-10 singles: "Do You Know (What It Takes)" and "Show Me Love". Her second ... | https://en.wikipedia.org/wiki?curid=25538 |
Request for Comments
Request for Comments (RFC), in information and communications technology, is a type of text document from the technology community. An RFC document may come from many bodies including from the Internet Engineering Task Force (IETF), the Internet Research Task Force (IRTF), the Internet Architectur... | https://en.wikipedia.org/wiki?curid=25540 |
Ragga
Raggamuffin music, usually abbreviated as ragga, is a subgenre of dancehall and reggae music. The instrumentals primarily consist of electronic music. Similar to hip hop, sampling often serves a prominent role in raggamuffin music.
Wayne Smith's "Under Mi Sleng Teng", produced by King Jammy in 1985 on a Casio M... | https://en.wikipedia.org/wiki?curid=25596 |
Religious conversion
Religious conversion is the adoption of a set of beliefs identified with one particular religious denomination to the exclusion of others. Thus "religious conversion" would describe the abandoning of adherence to one denomination and affiliating with another. This might be from one to another deno... | https://en.wikipedia.org/wiki?curid=25597 |
Rubidium
"Rubidium" is a chemical element with the symbol Rb and atomic number 37. Rubidium is a very soft, silvery-white metal in the alkali metal group. Rubidium metal shares similarities to potassium metal and caesium metal in physical appearance, softness and conductivity. Rubidium cannot be stored under atmospher... | https://en.wikipedia.org/wiki?curid=25599 |
Ruthenium
Ruthenium is a chemical element with the symbol Ru and atomic number 44. It is a rare transition metal belonging to the platinum group of the periodic table. Like the other metals of the platinum group, ruthenium is inert to most other chemicals. Russian-born scientist of Baltic-German ancestry Karl Ernst Cl... | https://en.wikipedia.org/wiki?curid=25600 |
Rhodium
Rhodium is a chemical element with the symbol Rh and atomic number 45. It is a rare, silvery-white, hard, corrosion-resistant, and chemically inert transition metal. It is a noble metal and a member of the platinum group. It has only one naturally occurring isotope, 103Rh. Naturally occurring rhodium is usuall... | https://en.wikipedia.org/wiki?curid=25601 |
Radium
Radium is a chemical element with the symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is silvery-white, but it readily reacts with nitrogen (rather than oxygen) on exposure to air, forming a black surface layer of rad... | https://en.wikipedia.org/wiki?curid=25602 |
Simple DirectMedia Layer
Simple DirectMedia Layer (SDL) is a cross-platform software development library designed to provide a hardware abstraction layer for computer multimedia hardware components. Software developers can use it to write high-performance computer games and other multimedia applications that can run o... | https://en.wikipedia.org/wiki?curid=29199 |
Seattle University
Seattle University (SU) is a private Jesuit university in Seattle, Washington. SU is the largest independent university in the Northwest US, with over 7,500 students enrolled in undergraduate and graduate programs within eight schools.
In 1891, Adrian Sweere, S.J., took over a small parish near dow... | https://en.wikipedia.org/wiki?curid=29200 |
Seattle Colleges District
The Seattle Colleges District (previously Seattle Community Colleges District), also known simply as Seattle Colleges, is a group of colleges located in Seattle, Washington. It consists of three colleges—North Seattle College, Seattle Central College (including the Health Education Center in ... | https://en.wikipedia.org/wiki?curid=29201 |
Summer of Love
The Summer of Love was a social phenomenon that occurred during mid-1967, when as many as 100,000 people, mostly young people sporting hippie fashions of dress and behavior, converged in San Francisco's neighborhood of Haight-Ashbury. More broadly, the Summer of Love encompassed the hippie music, drug, ... | https://en.wikipedia.org/wiki?curid=29204 |
Skyhooks (band)
Skyhooks were an Australian rock band formed in Melbourne in March 1973 by mainstays Greg Macainsh on bass guitar and backing vocals, and Imants "Freddie" Strauks on drums. They were soon joined by Bob "Bongo" Starkie on guitar and backing vocals, and Red Symons on guitar, vocals and keyboards; Graeme ... | https://en.wikipedia.org/wiki?curid=29207 |
Square root
In mathematics, a square root of a number is a number such that ; in other words, a number whose "square" (the result of multiplying the number by itself, or ⋅ ) is . For example, 4 and −4 are square roots of 16 because .
Every nonnegative real number has a unique nonnegative square root, called the "prin... | https://en.wikipedia.org/wiki?curid=29208 |
SS Kaiser Wilhelm der Grosse
Kaiser Wilhelm der Grosse (Ger. orth. "Kaiser Wilhelm der Große") was a German transatlantic ocean liner named after Wilhelm I, German Emperor, the first monarch of the (second) German Empire.
The liner was constructed in Stettin (now Szczecin, Poland) for the North German Lloyd (NDL), an... | https://en.wikipedia.org/wiki?curid=29209 |
Sydney Swans
The Sydney Swans are a professional Australian rules football club which plays in the Australian Football League (AFL). Established in Melbourne as the South Melbourne Football Club in 1874, the Swans relocated to Sydney in 1982, thus making it the first club in the competition to be based outside Victori... | https://en.wikipedia.org/wiki?curid=29210 |
Supersessionism
Supersessionism, also called replacement theology, is a Christian doctrine which asserts that the New Covenant through Jesus Christ supersedes the Old Covenant, which was made exclusively with the Jewish people.
In Christianity, supersessionism is a theological view on the current status of the church... | https://en.wikipedia.org/wiki?curid=29212 |
Software cracking
Software cracking (known as "breaking" in the 1980s) is the modification of software to remove or disable features which are considered undesirable by the person cracking the software, especially copy protection features (including protection against the manipulation of software, serial number, hardw... | https://en.wikipedia.org/wiki?curid=29213 |
SOAP
SOAP (abbreviation for Simple Object Access Protocol) is a messaging protocol specification for exchanging structured information in the implementation of web services in computer networks. Its purpose is to provide extensibility, neutrality, verbosity and independence. It uses XML Information Set for its message... | https://en.wikipedia.org/wiki?curid=29215 |
Sodium thiopental
Sodium thiopental, also known as Sodium Pentothal (a trademark of Abbott Laboratories), thiopental, thiopentone, or Trapanal (also a trademark), or Fatal-Plus in veterinary euthanasia contexts, is a rapid-onset short-acting barbiturate general anesthetic. It is the thiobarbiturate analog of pentobarb... | https://en.wikipedia.org/wiki?curid=29218 |
Stone Age
The Stone Age was a broad prehistoric period during which stone was widely used to make tools with an edge, a point, or a percussion surface. The period lasted for roughly 3.4 million years, and ended between 8700 BCE and 2000 BCE , with the advent of metalworking. Though some simple metalworking of malleabl... | https://en.wikipedia.org/wiki?curid=29219 |
Sam Loyd
Samuel Loyd (January 30, 1841 – April 10, 1911), born in Philadelphia and raised in New York City, was an American chess player, chess composer, puzzle author, and recreational mathematician.
As a chess composer, he authored a number of chess problems, often with interesting themes. At his peak, Loyd was one... | https://en.wikipedia.org/wiki?curid=29222 |
Shiba Inu
The is a Japanese breed of hunting dog. A small-to-medium breed, it is the smallest of the six original and distinct spitz breeds of dog native to Japan.
A small, alert and agile dog that copes very well with mountainous terrain and hiking trails, the Shiba Inu was originally bred for hunting. It looks sim... | https://en.wikipedia.org/wiki?curid=29228 |
Slot machine
A slot machine (American English), known variously as a fruit machine (British English, except Scotland), puggy (Scottish English), the slots (Canadian and American English), poker machine/pokies (Australian English and New Zealand English), or simply slot (British English and American English), is a casi... | https://en.wikipedia.org/wiki?curid=29229 |
Spear
A spear is a pole weapon consisting of a shaft, usually of wood, with a pointed head. The head may be simply the sharpened end of the shaft itself, as is the case with fire hardened spears, or it may be made of a more durable material fastened to the shaft, such as bone, flint, obsidian, iron, steel or bronze. T... | https://en.wikipedia.org/wiki?curid=29234 |
Sigrid Undset
Sigrid Undset (20 May 1882 – 10 June 1949) was a Norwegian novelist who was awarded the Nobel Prize for Literature in 1928.
Undset was born in Kalundborg, Denmark, but her family moved to Norway when she was two years old. In 1924, she converted to Catholicism. She fled Norway for the United States in 1... | https://en.wikipedia.org/wiki?curid=29236 |
Systems theory
Systems theory is the interdisciplinary study of systems. A system is a cohesive conglomeration of interrelated and interdependent parts which can be natural or human-made. Every system is bounded by space and time, influenced by its environment, defined by its structure and purpose, and expressed throu... | https://en.wikipedia.org/wiki?curid=29238 |
Sulfuric acid
Sulfuric acid (American English) or sulphuric acid (historical spelling), also known as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with molecular formula H2SO4. It is a colorless, odorless, and viscous liquid that is soluble in water and is synthesized in reac... | https://en.wikipedia.org/wiki?curid=29247 |
Space colonization
Space colonization (also called space settlement, or extraterrestrial colonization) is permanent human habitation and exploitation of natural resources off the planet Earth.
Many arguments have been made for and against space colonization. The two most common in favor of colonization are survival o... | https://en.wikipedia.org/wiki?curid=29248 |
Sexual orientation
Sexual orientation is an enduring pattern of romantic or sexual attraction (or a combination of these) to persons of the opposite sex or gender, the same sex or gender, or to both sexes or more than one gender. These attractions are generally subsumed under heterosexuality, homosexuality, and bisexu... | https://en.wikipedia.org/wiki?curid=29252 |
Spandrel
A spandrel is a triangular space, usually found in pairs, between the top of an arch and a rectangular frame; between the tops of two adjacent arches or one of the four spaces between a circle within a square. They are frequently filled with decorative elements.
There are four or five accepted and cognate me... | https://en.wikipedia.org/wiki?curid=29253 |
SimpleText
SimpleText is the native text editor for the Apple classic Mac OS. SimpleText allows text editing and text formatting (underline, italic, bold, etc.), fonts, and sizes. It was developed to integrate the features included in the different versions of TeachText that were created by various software developmen... | https://en.wikipedia.org/wiki?curid=29257 |
Statute of Westminster 1931
The Statute of Westminster 1931 is an Act of the Parliament of the United Kingdom whose modified versions are now domestic law within Australia and Canada; it has been repealed in New Zealand and implicitly in former Dominions that are no longer Commonwealth realms. Passed on 11 December 19... | https://en.wikipedia.org/wiki?curid=29263 |
Serbia
Serbia (, ), officially the Republic of Serbia (, ), is a landlocked country situated at the crossroads of Central and Southeast Europe in the southern Pannonian Plain and the central Balkans. It borders Hungary to the north, Romania to the northeast, Bulgaria to the southeast, North Macedonia to the south, Cro... | https://en.wikipedia.org/wiki?curid=29265 |
Relationship between religion and science
Historians of science and of religion, philosophers, theologians, scientists, and others from various geographical regions and cultures have addressed numerous aspects of the relationship between religion and science. Critical questions in this debate include whether religion ... | https://en.wikipedia.org/wiki?curid=29266 |
Stephen Sondheim
Stephen Joshua Sondheim (; born March 22, 1930) is an American composer and lyricist known for his work in musical theatre. One of the most important figures in 20th-century musical theater, Sondheim has been praised as having "reinvented the American musical" with shows that tackle "unexpected themes... | https://en.wikipedia.org/wiki?curid=29268 |
Self-determination
The right of a people to self-determination is a cardinal principle in modern international law (commonly regarded as a "jus cogens" rule), binding, as such, on the United Nations as authoritative interpretation of the Charter's norms. It states that people, based on respect for the principle of equ... | https://en.wikipedia.org/wiki?curid=29269 |
Spinor
In geometry and physics, spinors are elements of a complex vector space that can be associated with Euclidean space. Like geometric vectors and more general tensors, spinors transform linearly when the Euclidean space is subjected to a slight (infinitesimal) rotation. However, when a sequence of such small rota... | https://en.wikipedia.org/wiki?curid=29276 |
Safety engineering
Safety engineering is an engineering discipline which assures that engineered systems provide acceptable levels of safety. It is strongly related to industrial engineering/systems engineering, and the subset system safety engineering. Safety engineering assures that a life-critical system behaves as... | https://en.wikipedia.org/wiki?curid=29278 |
SIGGRAPH
SIGGRAPH (Special Interest Group on Computer GRAPHics and Interactive Techniques) is an annual conference on computer graphics (CG) organized by the ACM SIGGRAPH, starting in 1974. The main conference is held in North America; SIGGRAPH Asia, a second yearly conference, has been held since 2008 in countries th... | https://en.wikipedia.org/wiki?curid=29279 |
Lehi (militant group)
Lehi (; "Lohamei Herut Israel – Lehi", "Fighters for the Freedom of Israel – Lehi"), often known pejoratively as the Stern Gang, was a Zionist paramilitary organization founded by Avraham ("Yair") Stern in Mandatory Palestine. Its avowed aim was to evict the British authorities from Palestine by ... | https://en.wikipedia.org/wiki?curid=29287 |
Server-side scripting
Server-side scripting is a technique used in web development which involves employing scripts on a web server which produce a response customized for each user's (client's) request to the website. The alternative is for the web server itself to deliver a static web page. Scripts can be written in... | https://en.wikipedia.org/wiki?curid=29288 |
Optical spectrometer
An optical spectrometer (spectrophotometer, spectrograph or spectroscope) is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify materials. The variable measured is most often the light's in... | https://en.wikipedia.org/wiki?curid=29293 |
Quake II
Quake II is a first-person shooter video game released in December 1997. It was developed by id Software and published by Activision. It is not a direct sequel to "Quake"; id decided to revert to an existing trademark when the game's fast-paced, tactile feel felt closer to a "Quake" game than a new franchise.... | https://en.wikipedia.org/wiki?curid=25216 |
Qi
In traditional Chinese culture, qi or ch'i ( ) is believed to be a vital force forming part of any living entity. "Qi" translates as "air" and figuratively as "material energy", "life force", or "energy flow". "Qi" is the central underlying principle in Chinese traditional medicine and in Chinese martial arts. The ... | https://en.wikipedia.org/wiki?curid=25217 |
Quantum computing
Quantum computing is the use of quantum-mechanical phenomena such as superposition and entanglement to perform computation. Computers that perform quantum computations are known as quantum computers. Quantum computers are believed to be able to solve certain computational problems, such as integer fa... | https://en.wikipedia.org/wiki?curid=25220 |
Quasigroup
In mathematics, especially in abstract algebra, a quasigroup is an algebraic structure resembling a group in the sense that "division" is always possible. Quasigroups differ from groups mainly in that they are not necessarily associative.
A quasigroup with an identity element is called a loop.
There are a... | https://en.wikipedia.org/wiki?curid=25223 |
Quaestor
A ( , ; "investigator") was a public official in Ancient Rome. The position served different functions depending on the period. In the Roman Kingdom, ' (quaestors with judicial powers) were appointed by the king to investigate and handle murders. In the Roman Republic, quaestors (Lat. ') were elected official... | https://en.wikipedia.org/wiki?curid=25225 |
Q.E.D.
Q.E.D. or QED (sometimes italicized ()) is an initialism of the Latin phrase "", literally meaning "what was to be shown". Traditionally, the abbreviation is placed at the end of a mathematical proof or philosophical argument in print publications to indicate that the proof or the argument is complete, and henc... | https://en.wikipedia.org/wiki?curid=25228 |
Quagga
The quagga ( or ) ("Equus quagga quagga") was a subspecies of plains zebra that lived in South Africa until becoming extinct late in the 19th century. It was long thought to be a distinct species, but early genetic studies have supported it being a subspecies of plains zebra. A more recent study suggested that ... | https://en.wikipedia.org/wiki?curid=25229 |
QuickTime
QuickTime is an extensible multimedia framework developed by Apple Inc., capable of handling various formats of digital video, picture, sound, panoramic images, and interactivity. First made in 1991, the latest Mac version, QuickTime X, is currently available on Mac OS X Snow Leopard and newer. Apple ceased ... | https://en.wikipedia.org/wiki?curid=25231 |
Quartz
Quartz is a hard, crystalline mineral composed of silicon and oxygen atoms. The atoms are linked in a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz is the second most abundant mineral in Earth's co... | https://en.wikipedia.org/wiki?curid=25233 |
Quadrivium
In liberal arts education, the quadrivium (plural: quadrivia) consists of the four subjects or arts (namely arithmetic, geometry, music, and astronomy), taught after teaching the trivium. The word is Latin, meaning "four ways", and its use for the four subjects has been attributed to Boethius or Cassiodorus... | https://en.wikipedia.org/wiki?curid=25234 |
Quadrupedalism
Quadrupedalism is a form of terrestrial locomotion in animals using four limbs or legs. An animal or machine that usually moves in a quadrupedal manner is known as a quadruped, meaning "four feet" (from the Latin "quattuor" for "four" and "pes" for "foot"). The majority of quadrupeds are vertebrate anim... | https://en.wikipedia.org/wiki?curid=25236 |
Quarantine
A quarantine is a restriction on the movement of people and goods which is intended to prevent the spread of disease or pests. It is often used in connection to disease and illness, preventing the movement of those who may have been exposed to a communicable disease, but do not have a confirmed medical diag... | https://en.wikipedia.org/wiki?curid=25237 |
Quasar
A quasar () (also known as a quasi-stellar object abbreviated QSO) is an extremely luminous active galactic nucleus (AGN), in which a supermassive black hole with mass ranging from millions to billions of times the mass of the Sun is surrounded by a gaseous accretion disk. As gas in the disk falls towards the b... | https://en.wikipedia.org/wiki?curid=25239 |
Quinquagesima
Quinquagesima () is one of the names used in the Western Church for the Sunday before Ash Wednesday. It is also called Quinquagesima Sunday, Quinquagesimae, Estomihi, Shrove Sunday, or the Sunday next before Lent.
The name Quinquagesima originates from Latin "quinquagesimus" (fiftieth). This is in refer... | https://en.wikipedia.org/wiki?curid=25240 |
Quisling
Quisling (; ) is a term originating in Norway, which is used in Scandinavian languages and in English for a person who collaborates with an enemy occupying force – or more generally as a synonym for traitor. The word originates from the surname of the Norwegian war-time leader Vidkun Quisling, who headed a do... | https://en.wikipedia.org/wiki?curid=25243 |
Quill
A quill pen is a writing tool made from a moulted flight feather (preferably a primary wing-feather) of a large bird. Quills were used for writing with ink before the invention of the dip pen, the metal-nibbed pen, the fountain pen, and, eventually, the ballpoint pen. The hand-cut goose quill is rarely used as a... | https://en.wikipedia.org/wiki?curid=25247 |
Qantas
Qantas Airways Limited () is the flag carrier of Australia and its largest airline by fleet size, international flights and international destinations. It is the third oldest airline in the world, after KLM and Avianca, having been founded in November 1920; it began international passenger flights in May 1935. ... | https://en.wikipedia.org/wiki?curid=25254 |
QED (text editor)
QED is a line-oriented computer text editor that was developed by Butler Lampson and L. Peter Deutsch for the Berkeley Timesharing System running on the SDS 940. It was implemented by L. Peter Deutsch and Dana Angluin between 1965 and 1966.
QED (for "quick editor") addressed teleprinter usage, but s... | https://en.wikipedia.org/wiki?curid=25256 |
Qusay Hussein
Qusay Saddam Hussein al-Tikriti (or Qusai, ; c. 1967 – 22 July 2003) was an Iraqi politician and heir. He was the second son of former Iraqi President Saddam Hussein. He was appointed as his father's heir apparent in 2000. He was also in charge of the military.
Hussein was born in Baghdad around 1966 to... | https://en.wikipedia.org/wiki?curid=25257 |
Quantum chromodynamics
In theoretical physics, quantum chromodynamics (QCD) is the theory of the strong interaction between quarks and gluons, the fundamental particles that make up composite hadrons such as the proton, neutron and pion. QCD is a type of quantum field theory called a non-abelian gauge theory, with sym... | https://en.wikipedia.org/wiki?curid=25264 |
Queue (abstract data type)
In computer science, a queue is a collection of entities that are maintained in a sequence and can be modified by the addition of entities at one end of the sequence and the removal of entities from the other end of the sequence. By convention, the end of the sequence at which elements are a... | https://en.wikipedia.org/wiki?curid=25265 |
Quake (video game)
Quake is a first-person shooter video game developed by id Software and published by GT Interactive in 1996. It is the first game in the "Quake" series. In the game, players must find their way through various maze-like, medieval environments while battling a variety of monsters using an array of we... | https://en.wikipedia.org/wiki?curid=25266 |
Quantum field theory
In theoretical physics, quantum field theory (QFT) is a theoretical framework that combines classical field theory, special relativity and quantum mechanics, but "not" general relativity's description of gravity. QFT is used in particle physics to construct physical models of subatomic particles a... | https://en.wikipedia.org/wiki?curid=25267 |
Quantum electrodynamics
In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter interact and is the first theory where full agreement between quantum mechanics and special relativity is achieved. QED mathematically de... | https://en.wikipedia.org/wiki?curid=25268 |
Quine (computing)
A quine is a computer program which takes no input and produces a copy of its own source code as its only output. The standard terms for these programs in the computability theory and computer science literature are "self-replicating programs", "self-reproducing programs", and "self-copying programs"... | https://en.wikipedia.org/wiki?curid=25270 |
Field of fractions
In abstract algebra, the field of fractions of an integral domain is the smallest field in which it can be embedded. The elements of the field of fractions of the integral domain formula_1 are equivalence classes (see the construction below) written as formula_2 with formula_3 and formula_4 in formu... | https://en.wikipedia.org/wiki?curid=25271 |
Quadratic reciprocity
In number theory, the law of quadratic reciprocity is a theorem about modular arithmetic that gives conditions for the solvability of quadratic equations modulo prime numbers. Due to its subtlety, it has many formulations, but the most standard statement is:
.
This law, together with its supple... | https://en.wikipedia.org/wiki?curid=25272 |
Quantum information
In physics and computer science, quantum information is the information of the state of a quantum system. It is the basic entity of study in quantum information theory, and can be manipulated using quantum information processing techniques. Quantum information refers to both the technical definitio... | https://en.wikipedia.org/wiki?curid=25274 |
Quarterback
The quarterback (commonly abbreviated "QB"), colloquially known as the "signal caller", is a position in gridiron football. Quarterbacks are members of the offensive team and line up directly behind the offensive line. In modern American football, the quarterback is usually considered the leader of the off... | https://en.wikipedia.org/wiki?curid=25277 |
Quadrilateral
In Euclidean plane geometry, a quadrilateral is a polygon with four edges (or sides) and four vertices or corners. Sometimes, the term quadrangle is used, by analogy with triangle, and sometimes tetragon for consistency with pentagon (5-sided) and hexagon (6-sided), or 4-gon for consistency with "k"-gons... | https://en.wikipedia.org/wiki?curid=25278 |
Quantum teleportation
Quantum teleportation is a process in which quantum information (e.g. the exact state of an atom or photon) can be transmitted (exactly, in principle) from one location to another, with the help of classical communication and previously shared quantum entanglement between the sending and receivin... | https://en.wikipedia.org/wiki?curid=25280 |
Qubit
In quantum computing, a qubit () or quantum bit (sometimes qbit) is the basic unit of quantum information—the quantum version of the classical binary bit physically realized with a two-state device. A qubit is a two-state (or two-level) quantum-mechanical system, one of the simplest quantum systems displaying th... | https://en.wikipedia.org/wiki?curid=25284 |
Quechuan languages
Quechua (, ; ), usually called ("people's language") in Quechuan languages, is an indigenous language family spoken by the Quechua peoples, primarily living in the Peruvian Andes. Derived from a common ancestral language, it is the most widely spoken pre-Columbian language family of the Americas, wi... | https://en.wikipedia.org/wiki?curid=25286 |
Protein quaternary structure
Protein quaternary structure is the number and arrangement of multiple folded protein subunits in a multi-subunit complex. It includes organizations from simple dimers to large homooligomers and complexes with defined or variable numbers of subunits. It can also refer to biomolecular compl... | https://en.wikipedia.org/wiki?curid=25291 |
Quest for Glory
Quest for Glory is a series of hybrid adventure/role-playing video games, which were designed by Corey and Lori Ann Cole. The series was created in the Sierra Creative Interpreter, a toolset developed at Sierra specifically to assist with adventure game development. The series combines humor, puzzle el... | https://en.wikipedia.org/wiki?curid=25292 |
Quango
A quango or QUANGO (less often QuANGO or QANGO) is a quasi non-governmental organisation. It is typically an organisation to which a government has devolved power, but which is still partly controlled and/or financed by government bodies. As its name suggests, a quango is a hybrid form of organization, with ele... | https://en.wikipedia.org/wiki?curid=25293 |
Quiver
A quiver is a container for holding arrows, bolts, darts, or javelins. It can be carried on an archer's body, the bow, or the ground, depending on the type of shooting and the archer's personal preference. Quivers were traditionally made of leather, wood, furs, and other natural materials, but are now often mad... | https://en.wikipedia.org/wiki?curid=25295 |
Quinine
Quinine is a medication used to treat malaria and babesiosis. This includes the treatment of malaria due to "Plasmodium falciparum" that is resistant to chloroquine when artesunate is not available. While sometimes used for restless legs syndrome, quinine is not recommended for this purpose due to the risk of ... | https://en.wikipedia.org/wiki?curid=25297 |
Quasispecies model
The quasispecies model is a description of the process of the Darwinian evolution of certain self-replicating entities within the framework of physical chemistry. A quasispecies is a large group or "cloud" of related genotypes that exist in an environment of high mutation rate (at stationary state),... | https://en.wikipedia.org/wiki?curid=25308 |
Qing dynasty
The Qing dynasty, officially the Great Qing (), was the last imperial dynasty of China. It was established in 1636, and ruled China proper from 1644 to 1912. It was preceded by the Ming dynasty and succeeded by the Republic of China. The Qing multi-cultural empire lasted for almost three centuries and for... | https://en.wikipedia.org/wiki?curid=25310 |
Quantum gravity
Quantum gravity (QG) is a field of theoretical physics that seeks to describe gravity according to the principles of quantum mechanics, and where quantum effects cannot be ignored, such as in the vicinity of black holes or similar compact astrophysical objects where the effects of gravity are strong.
... | https://en.wikipedia.org/wiki?curid=25312 |
Quality of service
Quality of service (QoS) is the description or measurement of the overall performance of a service, such as a telephony or computer network or a cloud computing service, particularly the performance seen by the users of the network. To quantitatively measure quality of service, several related aspec... | https://en.wikipedia.org/wiki?curid=25315 |
Quadrature amplitude modulation
Quadrature amplitude modulation (QAM) is the name of a family of digital modulation methods and a related family of analog modulation methods widely used in modern telecommunications to transmit information. It conveys two analog message signals, or two digital bit streams, by changing ... | https://en.wikipedia.org/wiki?curid=25316 |
Quetzalcoatlus
Quetzalcoatlus northropi is a pterosaur known from the Late Cretaceous of North America (Maastrichtian stage) and one of the biggest known flying animals of all time. It is a member of the family Azhdarchidae, a family of advanced toothless pterosaurs with unusually long, stiffened necks. Its name comes... | https://en.wikipedia.org/wiki?curid=25319 |
QRP operation
In amateur radio, QRP operation refers to transmitting at reduced power while attempting to maximize one's effective range. QRP operation is a specialized pursuit within the hobby that was first popularized in the early 1920s. QRP operators generally limit their transmitted RF output power to 5 watts or ... | https://en.wikipedia.org/wiki?curid=25323 |
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