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RacoviĹŁÄ The RacoviĹŁÄ or Racovitza family were a partially hellenized family of Wallachian boyars which gave the Danubian Principalities several hospodars, becoming influential inside the Ottoman Empire and the Phanariote kinship network. One of its branches remained present inside Romania.
Racquet A racquet (or racket) is a sports implement consisting of a handled frame with an open hoop across which a network of cord is stretched. It is used for striking a ball in such games as squash, tennis, racquetball, and badminton.
Racquet Club of Chicago The Racquet Club of Chicago is a prestigious private athletic club at 1365 North Dearborn Street in Chicago, within the Gold Coast Historic District. The classical revival building was designed by architect Andrew Nicholas Rebori, constructed in 1923.
Racquet-tails The genus Prioniturus contains nine parrot species found in the Philippines and Indonesia. They are easily distinguished from all other parrots by their elongated central tail feathers with the bare shaft and spatula at the end.
Racquets (sport) Rackets (British English) or Racquets (American English), is an indoor racquet sport played in the United Kingdom, United States, and Canada. The sport is infrequently called "hard rackets," possibly to distinguish it from the related sport of squash (formerly called "squash rackets").
Rad Racer is a racing game developed by and published by Square for the Nintendo Entertainment System in 1987. It was programmed by Nasir Gebelli, designed and supervised by Hironobu Sakaguchi, and featured music by Nobuo Uematsu, all of whom later contributed to Final Fantasy in similar roles.
Rad Rides by Troy Rad Rides by Troy is a custom car shop in Mantelo IL founded by National Rod & Custom Car Hall of Fame Museum member Troy Trepanier. The company has produced a number of award winning and trend setting cars.
Rada Trzech The Council of Three (Polish Rada Trzech) was a collegial body created by the Polish Government in Exile in 1954 with prerogatives of the President of Poland. It consisted of three members of the government chosen by the Rada Jedności Narodowej (Council of National Unity), a rump parliament in exile.
Radagaisus Radagaisus (d. 406) was a barbarian leader of unknown origins, who led a vast collection of Germanic tribes (including Goths, Vandals, Suevi, Burgundians and Alans) on an invasion of Italy in late 405 and early 406.
Radamel Falcao GarcĂa Radamel Falcao GarcĂa Zarate (born February 10, 1986) is a Colombian footballer who plays as a striker for Club AtlĂ©tico River Plate of Buenos Aires, Argentina, a historic team. Falcao made his mark scoring two goals in his first start and seven in total of his first seven games.
Radamisto (Handel) Radamisto is an opera in three acts by George Frideric Handel to an Italian libretto by Niccola Francesco Haym, based on L'amor tirranico, o Zenobia by Domenico Lalli and Zenobia by Matteo Noris. It was Handel's first opera for the Royal Academy of Music.
Radar Radar is a system that uses radio waves to determine and map the location, direction, and/or speed of both moving and fixed objects such as aircraft, ships, motor vehicles, weather formations and terrain. A transmitter emits radio waves, which are reflected by the target and detected by a receiver, typically in the same location as the transmitter.
Radar (magazine) Radar is an American online and print publication that features an eclectic, irreverent mix of articles on entertainment, fashion, politics, and general human interest. Despite a gloomy publishing climate, the high-propfile, independently published title has been relaunched twice (most recently in September, 2006), financed by a number of high-profile backers.
Radar altimeter A radar altimeter measures altitude above the terrain presently beneath an aircraft or spacecraft. This type of altimeter provides the distance between the plane and the ground, as opposed to a barometric altimeter which only provides altitude above sea level.
Radar cross section Radar cross section (RCS) is a description of how an object reflects an incident electromagnetic wave. For an arbitrary object, the RCS is highly dependent on the radar wavelength and incident direction of the radio wave.
Radar detector A radar detector is an electronic device used by motorists to determine if their speed is being monitored. The term originates from early speed-detection technologies, in which police bounced a radio wave off a moving vehicle with a device called a radar gun that determined the vehicle's speed by the Doppler-effect-moderated change in the wave's frequency.
Radar display Modern radar systems typically use some sort of raster scan display to produce a map-like image. In the past, notably during the early days of radar development, such displays were difficult to produce for a number of reasons.
Radar jamming and deception Radar jamming and deception is the intentional emission of radio frequency signals to interfere with the operation of a radar by saturating its receiver with noise or false information. There are two types of radar jamming: Mechanical and Electronic jamming.
Radar Love "Radar Love" was the worldwide breakthrough hit by the Dutch rock band Golden Earring. The song is considered by many to be among the greatest "driving songs" ever due to its lyrics about driving all night, its up-tempo beat, and its catchy sing-along chorus.
Radar Men from the Moon Radar Men from the Moon (Republic Studios, 1952) was the first Commando Cody serial, in 12 chapters, starring newcomer George Wallace (1917-2005) as Cody and Aline Towne as his sidekick Joan Gilbert, with serial veteran Roy Barcroft as the evil Retik, the Ruler of the Moon. The director was Fred C.
Radar O'Reilly Corporal Walter Eugene “Radar” O’Reilly is a fictional character in the M*A*S*H novels, film, the television series, the television movie W*A*L*T*E*R and two episodes of the series After M*A*S*H. The character was portrayed by Gary Burghoff in both the film and on television — the only actor from the film to reprise his role on television, aside from G.
Radar picket A radar picket is a radar-equipped ship, aircraft, or vehicle used to increase the radar detection range around a force to protect it from surprise attack. Often several detached radar units encircle a force to provide increased cover in all directions.
Radar Signal Characteristics A Radar System uses a Radio Frequency electromagnetic signal reflected from a target to determine information about that target. In any radar system, the signal transmitted and received will exhibit many of the characteristics described below.
Radar Tower Bremerhaven The Bremerhaven Radar Tower is a 106 metre reinforced concrete tower located in Bremerhaven, Germany. The tower, which was constructed between 1962 and 1965, accommodates numerous transmitting plants for maritime radio purposes, in addition to its radar equipment.
Radar warning receiver Typically fitted to military aircraft, radar warning receivers (RWR) detect the radio emissions of radar systems, whether ground-based or on-board other aircraft. The system is often capable of classifying the source of the radar by type (Pulsed or continuous wave radar, for example) and strength.
RadasĹ‚aĹ AstroĹski RadasĹ‚aĹ AstroĹski (October 25, 1887, Zapolle, Belarus – October 17, 1976, South River, NJ, United States) (Belarus: Đ Đ°Đ´Đ°Ńлаў ĐŃтроўŃкі; Polish: RadosĹ‚aw Ostrowski) was a Belarusian nationalist political activist and political leader, notably serving as president of the Belarusian Central Rada, a puppet Belarusian government under German administration in 1943-1944.
Radboud University Nijmegen The Radboud University Nijmegen, formerly called Catholic University of Nijmegen is the university of the Dutch city of Nijmegen. Currently, more than 17,000 undergraduates and postgraduates attend the university, which is about 8 % of all university students in the Netherlands.
Radcliffe Camera The Radcliffe Camera (often abbreviated to "the Rad Cam" in Oxford), is a building in Oxford, England, built by James Gibbs in 1737–1749 to house the Radcliffe Science Library. The building was funded by a £40,000 bequest from John Radcliffe, who died in 1714.
Radcliffe Choral Society The Radcliffe Choral Society was founded in 1898 by Elizabeth Cary Agassiz, the first President of Radcliffe College. The Radcliffe Choral Society became one of the oldest women's choirs in the nation and the oldest women's organization at Radcliffe.
Radcliffe Institute for Advanced Study The Radcliffe Institute for Advanced Study at Harvard is an educational institution in Cambridge, Massachusetts, one of the semiautonomous components of Harvard University. It is heir to the name and buildings of Radcliffe College, but unlike that historical institution, its focus is directed not at undergraduate education but postgraduate research.
Radcliffe Line The Radcliffe Line became the border between India and Pakistan in 1947. The partition of the British Indian Empire required that the territories to be assigned to the two new countries, generally had to have a population matching the majority.
Radcliffe on Trent Radcliffe on Trent is a large village and civil parish in the Rushcliffe borough of Nottinghamshire, with a population of around 8,000 It is to the east of Nottingham], and is close to but not quite part of the [[Greater Nottingham built-up area. However, the Greater Nottingham Partnership considers the whole of Rushcliffe to be part of Greater Nottingham.
Radcliffe Pitches The Radcliffe Pitches is Harvard University's premier female "a cappella" (or "a capella") singing ensemble, founded in 1975 at the Hasty Pudding Club. The group is made up of 12 to 16 Harvard undergraduates who perform at Harvard and internationally on the group's various tours.
Radcliffe Quad The Radcliffe Quadrangle (or Rad Quad as it is known to students of the College) is the second quadrangle of University College, Oxford, England. It was built in 1719 with money bequeathed to the College by John Radcliffe, a former student of the college and doctor to the king.
Radcom RadCom is the monthly magazine published by the Radio Society of Great Britain and is provided free to all corporate members of the Society. Typically 100 pages, it includes a mixture of news, theory, construction and technical articles of interest to the amateur radio community.
Radcot Bridge Radcot Bridge is a bridge carrying the A4095 over the River Thames, on the border of the traditional counties of Oxfordshire and Berkshire. It stands immediately south of the hamlet of Radcot (Oxfordshire) and not far north of Faringdon in Berkshire (now Oxfordshire).
Radcot Bridge (Battle) Radcot Bridge, Oxfordshire, England, was the scene of a battle (19 December 1387) between troops loyal to Richard II, led by court favourite Robert de Vere, and an army captained by Henry Bolingbroke, Earl of Derby. The previous year had seen increasing hostility between the young king and his magnates.
Rade Prica Rade Prica (born June 30, 1980) is a Swedish professional football midfield player who currently plays for Danish Superliga side Aalborg Boldspilklub. He previously played for Swedish clubs Helsingborgs IF and Ljungby IF, as well as German team Hansa Rostock.
Rade VrÄŤakovski Rade Vrchakovski-Vrchak is a Macedonian rap performer and songwriter. Internationally, he is most famous for writing the lyrics for Ninanajna, the song with which Elena Risteska represented Republic of Macedonia at the 2006 Eurovision Song Contest.
Radeberg Radeberg is a small town located approximately 20 kilometres north-east of Dresden in Saxony, Germany. The "Elektronik Radeberg GmbH" is located there which was formerly well known in East Germany for the production of portable television sets.
Radebeul Radebeul is a town (groĂźe Kreisstadt) in the Elbe valley, Saxony, Germany, a suburb of Dresden. It is well-known for its viticulture, a museum dedicated to writer Karl May and a narrow gauge railway connecting Radebeul with the castle of Moritzburg and the town of Radeburg.
Radebeul-Radeburg line The Radebeul-Radeburg line, known locally as the Lößnitzgrundbahn (Lössnitz Valley Railroad), is a gauge narrow gauge steam-hauled railway in the outskirts of Dresden, Germany. Primarily a tourist attraction, it maintains a year-round timetable and runs between Radebeul Ost station on the main Deutsche Bahn line between Dresden and Meissen and the small towns of Moritzburg and Radeburg north of Dresden.
Radegast (god) Radegast, also called Radigost, Radhost, Redigast, is a hypothetical West Slavic god of hospitality, fertility, and crops, associated with war and Sun. It is, however, questionable whether such a deity was in truth worshiped by pagan Slavs.
Radegast station Radegast is a former train station in ĹĂłdĹş, Poland. During World War II, in the course of the Holocaust, the station, located at the time near the boundary of the ĹĂłdĹş Ghetto, was the place where the Jewish inhabitants of ĹĂłdĹş were gathered for transport out of the Ghetto and the city to the Kulmhof and Auschwitz death camps.
Radek Martinek Radek Martinek (born August 31, 1976 in HavlĂÄŤkĹŻv Brod, Czechoslovakia) is an ice hockey defenceman who plays for the New York Islanders of the NHL. Martinek was an 8th round selection, 228th overall by the Islanders in the 1999 NHL Entry Draft.
Radelchis I of Benevento Radelchis I (also Radalgis) (d. 851) was the treasurer, then prince of Benevento from 839, when he assumed the throne upon the assassination (possibly his instigation) of Sicard and imprisonment of Sicard's brother, Siconulf, to his death, though in his time the principality was divided.
Radelchis II of Benevento Radelchis II (died 907) was the prince of Benevento from 881 to 900 with a long interruption during which the Byzantines and Spoletans vied for the principality. In 884 (or 885), he was deposed and exiled by his brother Aiulf.
Rademacher distribution In probability theory and statistics, the Rademacher distribution, named after Hans Rademacher is a discrete probability distribution which has a 50% chance for either 1 or -1. The probability mass function of this distribution is
Raden Raden (čžşéż) is a Japanese decorative craft used in the creation of lacquerware and woodwork, though it can be applied to metal and other surfaces. The basic underpinnings of Raden consist of variously applying the cut linings of mother-of-pearl, abalone, and other shells into the surface of the target lacquer or wood.
Raden Ayu Kartini Raden Ajeng (Adjeng) Kartini or, more accurately, Raden Ayu (Ajoe) Kartini, (April 21, 1879–September 13, 1904), was a prominent Javanese and an Indonesian national heroine. Kartini is known as a pioneer in the area of women's rights for native Indonesians.
Raden Wijaya Raden Wijaya (also known as Kertarajasa Jayawardhana) (1293-1309) was the founder and first raja of the Majapahit Empire on Java, Indonesia. The story of his founding of Majapahit was written in several records, including Pararaton and Negarakertagama.
Radeon Radeon is a brand of graphics processing units (GPU) that has been manufactured by ATI Technologies since 2000 and the successor to their Rage line. There are four different groups, which can be differentiated by the DirectX generation they support.
Radeon R520 ATI's "R520" core (codenamed Fudo) is the foundation for a line of DirectX 9c 3D accelerator x1000 video cards. It is ATI's first major architectural overhaul since the "R300" core and is highly optimized for Shader Model 3.
Rader's FFT algorithm Rader's algorithm (1968) is a fast Fourier transform (FFT) algorithm that computes the discrete Fourier transform (DFT) of prime sizes by re-expressing the DFT as a cyclic convolution. (The other algorithm for FFTs of prime sizes, Bluestein's algorithm, also works by rewriting the DFT as a convolution.
Rader, Helge & Gerson Rader, Helge & Gerson was a small law firm in Pasadena, California that was formed in the 1970s. It was created by Stanley Rader as a subsidiary of Worldwide Church of God and was intended to handle the legal affairs of the Church, its employees and ministers.
Radermachera Radermachera is a genus of 15-16 species of flowering plants in the family Bignoniaceae, native to southeastern Asia. They are evergreen trees reaching 5-40 m tall, with bipinnate or tripinnate leaves, and panicles of large bell-shaped, white, pink, pale purple or yellow flowers 5-7 cm diameter.
Radermachera sinica Radermachera sinica (also called "China Doll" or "Serpent Tree") is an evergreen tree in the family Bignoniaceae, native to the subtropical mountain regions of southern China and Taiwan. It can reach heights of up to 30 m tall and a trunk diameter of 1 m.
Radevormwald Radevormwald is a North Rhine-Westphalian municipality in the Oberbergischer Kreis, about 50 km east of Cologne, in Germany. It is one of the oldest towns in the Bergischen Land, formerly the County and Duchy of Berg.
Radfan Radfan or the Radfan Hills is a region of the Republic of Yemen. In the 1960s, the area was part of a British protectorate of Dhala (a member of the Federation of South Arabia) and was the site of intense fighting during the Aden Emergency.
Radford (band) Radford is an alternative rock band from Los Angeles, California. The band formed after lead singer and band nucleus Johnny Radford Mead emigrated from Oxford, England to Los Angeles; there he met guitarist Chris Hower and began touring with a full band.
Radford University Radford University is a public, state-funded, comprehensive university, located in the City of Radford, in Southwestern Virginia. Radford features a highly diverse liberal arts curricula for undergraduates, along with multiple graduate programs.
Radford, Nottingham Radford is an inner-city area of Nottingham, located just outside the city centre itself. In recent years it has suffered from problems related to crime and anti-social behaviour (akin to the nearby district of Hyson Green), although there are signs that recent efforts by the authorities may be improving the situation.
Radha Radha (Devanagari: राधा) is a famous female personality from Hindu, (Vedic) tradition, also known as Radharani, prefixed with the respectful term 'Srimati' by devout followers. Radha is almost always depicted alongside her paramour Krishna, and has a highly prominent feature within the philosophy of today's Gaudiya Vaishnava religions who believe Radha to be the original goddess Lakshmi.
Radha Nilia Radha Nilia, born March 11, 1980 in Palo Alto, California, is an actress, director and producer. She began her career in film and entertainment as a young teenager when she became a model and actress in Manila, Philippines.
Radha Soami Radhasoami (also Radhasoami Satsang) was founded in 1861 by Shri Shiv Dayal Singh Sahab who preached that human beings could reach God realization only through listening to the shabad / shabd (sound), or nam (name), of the Lord.
Radhabinod Pal Justice Radhabinod Pal was an Indian jurist. He was the lone Indian member to be appointed to the International Military Tribunal for the Far East's trials of Japanese war crimes committed during the second World War.
Radhanath Sikdar Radhanath Sikdar (Bangla: রাধানাথ শিকদার) (1813-1870) was a Bengali Indian mathematician who calculated the height of Peak XV in the Himalaya and discovered it to be the tallest mountain above sea level. Peak XV was later renamed Mount Everest.
Radhanath Swami Radhanath Swami is a leading member and guru within the International Society for Krishna Consciousness who works largely from Mumbai in India and also travels exstensively throughout Europe and America. He is well known throughout the society largely through his lectures on the philosophy of Gaudiya Vaishnavism.
Radhika Coomaraswamy Radhika Coomaraswamy was appointed by then United Nations Secretary-General Kofi Annan as Under-Secretary-General, Special Representative for Children and Armed Conflict in April 2006. In this capacity, she serves as a moral voice and independent advocate to build awareness and give prominence to the rights and protection of boys and girls affected by armed conflict.
Radhouane Charbib Radhouane Charbib () was recognized by the Guinness Book of Records as the tallest living man, until January 15, 2005 when Xi Shun was measured at Chifeng City Hospital, Inner Mongolia, China, and recorded as being 2 millimetres taller.
Radia Perlman Radia Perlman is a software designer and network engineer sometimes referred to as the 'Mother of the Internet'. She is most famous for her invention of the spanning-tree protocol which is fundamental to the operation of network bridges.
Radial (radio) In radio, evenly-spaced points along evenly-spaced radials on a map are used to determine average elevation above mean sea level (AMSL) within a radio station's coverage area (including broadcast stations and mobile phone towers, among others). This in turn determines height above average terrain (HAAT), which greatly affects a station's range (more so than effective radiated power), and potential for interference with other stations.
Radial arm maze The radial arm maze was designed by Olton and Samuelson (1976) to measure spatial learning and memory in rats. The apparatus consisted of eight equidistantly-spaced arms, each about 4 feet long, and all radiating from a small circular central platform.
Radial cleavage Radial cleavage is a cleavage pattern characteristic of some animal groups, for instance vertebrates and echinoderms, in which the spindle axes are parallel or at right angles to the polar axis of the oocyte. In most other groups, such as annelids and mollusks, embryos undergo spiral cleavage, in which the cleavage planes are oriented obliquely to the polar axis of the oocyte.
Radial collateral ligament (elbow) The radial collateral ligament (external lateral ligament) is a short and narrow fibrous band, less distinct than the ulnar collateral, attached, above, to a depression below the lateral epicondyle of the humerus; below, to the annular ligament, some of its most posterior fibers passing over that ligament, to be inserted into the lateral margin of the ulna.
Radial collateral ligament (thumb) The radial collateral ligament (external lateral ligament, radial carpal collateral ligament) extends from the tip of the styloid process of the radius to the radial side of the navicular, some of its fibers being prolonged to the greater multangular bone and the transverse carpal ligament.
Radial distribution function In computational mechanics and statistical mechanics, a radial distribution function (RDF), g(r), describes how the density of surrounding matter varies as a function of the distance from a distinguished point. This is normalized by the average density such that the function goes to 1 far from the distinguished point when the medium is even slightly disordered.
Radial engine The radial engine is an internal combustion engine configuration in which the cylinders point outward from a central crankshaft like the spokes on a wheel. This configuration was very commonly used in aircraft engines before being superseded by turboshaft and turbojet engines.
Radial glia Radial glial cells are a pivotal cell type in the developing CNS involved in key developmental processes, ranging from patterning and neuronal migration to their newly described role as precursors during neurogenesis. The term 'radial glial cell' refers to their two major characteristics, their long radial processes extending from the ventricular zone (VZ) to the pial surface and their glial properties, such as the content of glycogen granules or the expression of the astrocyte-specific glutamate transporter or the glial fibrillary acidic protein (GFAP).
Radial notch The radial notch of the ulna (lesser sigmoid cavity) is a narrow, oblong, articular depression on the lateral side of the coronoid process; it receives the circumferential articular surface of the head of the radius.
Radial spoke The radial spoke is a multi-unit protein structure found in the axonemes of eukaryotic cilia and flagella. Although experiments have determined the importance of the radial spoke in the proper function of these organelles, its structure and mode of action remain poorly understood.
Radial styloid process The lateral surface of the radius is prolonged obliquely downward into a strong, conical projection, the styloid process, which gives attachment by its base to the tendon of the Brachioradialis, and by its apex to the radial collateral ligament of the wrist-joint.
Radial tire A radial tire (more properly, a radial-ply tire) is a particular design of automotive tire (in British English, tyre). The design was originally developed by Michelin in 1946 but, because of its advantages, has now become the standard design for essentially all automotive tires.
Radial velocity Radial velocity is the velocity of an object in the direction of the line of sight. The light of an object with a substantial radial velocity will be subject to Doppler effect, so the wavelength of the light increases for receding objects (redshift) and decreases for approaching objects (blueshift).
Radialene [n]Radialenes are alicyclic organic compounds containing n cross-conjugated exocyclic double bonds. The double bonds are commonly alkene groups but those with a carbonyl (C=O) group are also called radialenes Effect of Overcrowding in [n]Radialenes on the Synthesis of Bis[4]radialenesMenahem Kaftory, Mark Botoshansky, Shunji Hyoda, Toshihiro Watanabe, and Fumio Toda J.
Radian group Radian Group Inc. () is a leading global credit enhancement company, offering mortgage insurance, financial guaranty insurance for public finance, asset-backed and structured finance transactions, reinsurance and other financial services.
Radiance Radiance and spectral radiance are radiometric measures that describe the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle in a specified direction. They are used to characterize both emission from diffuse sources and reflection from diffuse surfaces.
Radiance (play) Radiance is a play by Australian author and playwright Louis Nowra, which focuses on three Aboriginal half-sisters, who have gone their separate ways in life, and are reunited when they arrive for their mother's funeral service. Radiance has been written both as a stageplay and a screenplay.
Radiance War The Radiance War, also called Domino War was an interstellar conflict in which the Skolian Imperialate and the Eubian Concord annihilated much of each other, in the Saga of the Skolian empire books by Catherine Asaro.
Radiant (comics) The Radiant is a superhero from the DC Comics Universe. He was created as part of the backstory to the Doomsday storyline following The Death of Superman, in which the origin of Doomsday as well as his future (and that of Superman's) is revealed.
Radiant (meteor shower) The radiant or apparent radiant of a meteor shower is the point in the sky that (to a planetary observer) meteors appear to originate from. The Perseids, for example, are meteors which appear to come from a point within the constelation of Perseus.
Radiant energy Radiant energy is the energy of electromagnetic waves. The term is most commonly used in the fields of radiometry, solar energy, heating and lighting, but is also used less frequently in other fields (such as telecommunications).
Radiant flux In radiometry, radiant flux or radiant power is the measure of the total power of electromagnetic radiation (including visible light). The power may be the total emitted from a source, or the total landing on a particular surface.
Radiant heating Radiant heating is a heating system which heats a building through radiant heat, rather than other conventional methods including convection heating. The heat energy is emitted from a warm element (floor, wall, overhead panel) and warms people and other objects in rooms rather than directly heating the air.
Radiate (coin) The radiate or Post-reform radiate (the actual name, like many Roman coins of this time, is unknown), was introduced by Diocletian during his reforms. It looked very similar to an Antoninianus even with a radiated crown, except it misses the XXI that numismatists believe was to represent 20 parts bronze to 1 part silver.
Radiation Radiation in physics is the process of emitting energy in the form of waves or particles. Various types of radiation may be distinguished, depending on the properties of the emitted energy/matter, the type of the emission source, properties and purposes of the emission, etc.
Radiation budget The radiation budget represents the balance between incoming energy from the Sun and outgoing thermal (longwave) and reflected (shortwave) energy from the Earth. The "budget" is an analogy between conservation of energy and household budgeting.
Radiation condition For the Helmholtz equation Arnold Sommerfeld defined the condition of radiation as "the sources must be sources, not sinks of energy. The energy which is radiated from the sources must scatter to infinity; no energy may be radiated from infinity into ...
Radiation Exposure Compensation Act The United States Radiation Exposure Compensation Act (RECA) is a federal statute providing for the monetary compensation of people who contracted cancer and a number of other specified diseases as a direct result of their exposure to atmospheric nuclear testing undertaken by the United States during the Cold War, or their exposure to high levels of radon while working in uranium mines. It was passed by Congress on October 5, 1990.
Radiation hardening Radiation hardening is a method of designing and testing electronic components and systems to make them resistant to damage or malfunctions caused by high-energy subatomic particles and electromagnetic radiation, such as would be encountered in outer space, high-altitude flight and around nuclear reactors.
Racquet A racquet (or racket) is a sports implement consisting of a handled frame with an open hoop across which a network of cord is stretched. It is used for striking a ball in such games as squash, tennis, racquetball, and badminton.
Racquet Club of Chicago The Racquet Club of Chicago is a prestigious private athletic club at 1365 North Dearborn Street in Chicago, within the Gold Coast Historic District. The classical revival building was designed by architect Andrew Nicholas Rebori, constructed in 1923.
Racquet-tails The genus Prioniturus contains nine parrot species found in the Philippines and Indonesia. They are easily distinguished from all other parrots by their elongated central tail feathers with the bare shaft and spatula at the end.
Racquets (sport) Rackets (British English) or Racquets (American English), is an indoor racquet sport played in the United Kingdom, United States, and Canada. The sport is infrequently called "hard rackets," possibly to distinguish it from the related sport of squash (formerly called "squash rackets").
Rad Racer is a racing game developed by and published by Square for the Nintendo Entertainment System in 1987. It was programmed by Nasir Gebelli, designed and supervised by Hironobu Sakaguchi, and featured music by Nobuo Uematsu, all of whom later contributed to Final Fantasy in similar roles.
Rad Rides by Troy Rad Rides by Troy is a custom car shop in Mantelo IL founded by National Rod & Custom Car Hall of Fame Museum member Troy Trepanier. The company has produced a number of award winning and trend setting cars.
Rada Trzech The Council of Three (Polish Rada Trzech) was a collegial body created by the Polish Government in Exile in 1954 with prerogatives of the President of Poland. It consisted of three members of the government chosen by the Rada Jedności Narodowej (Council of National Unity), a rump parliament in exile.
Radagaisus Radagaisus (d. 406) was a barbarian leader of unknown origins, who led a vast collection of Germanic tribes (including Goths, Vandals, Suevi, Burgundians and Alans) on an invasion of Italy in late 405 and early 406.
Radamel Falcao GarcĂa Radamel Falcao GarcĂa Zarate (born February 10, 1986) is a Colombian footballer who plays as a striker for Club AtlĂ©tico River Plate of Buenos Aires, Argentina, a historic team. Falcao made his mark scoring two goals in his first start and seven in total of his first seven games.
Radamisto (Handel) Radamisto is an opera in three acts by George Frideric Handel to an Italian libretto by Niccola Francesco Haym, based on L'amor tirranico, o Zenobia by Domenico Lalli and Zenobia by Matteo Noris. It was Handel's first opera for the Royal Academy of Music.
Radar Radar is a system that uses radio waves to determine and map the location, direction, and/or speed of both moving and fixed objects such as aircraft, ships, motor vehicles, weather formations and terrain. A transmitter emits radio waves, which are reflected by the target and detected by a receiver, typically in the same location as the transmitter.
Radar (magazine) Radar is an American online and print publication that features an eclectic, irreverent mix of articles on entertainment, fashion, politics, and general human interest. Despite a gloomy publishing climate, the high-propfile, independently published title has been relaunched twice (most recently in September, 2006), financed by a number of high-profile backers.
Radar altimeter A radar altimeter measures altitude above the terrain presently beneath an aircraft or spacecraft. This type of altimeter provides the distance between the plane and the ground, as opposed to a barometric altimeter which only provides altitude above sea level.
Radar cross section Radar cross section (RCS) is a description of how an object reflects an incident electromagnetic wave. For an arbitrary object, the RCS is highly dependent on the radar wavelength and incident direction of the radio wave.
Radar detector A radar detector is an electronic device used by motorists to determine if their speed is being monitored. The term originates from early speed-detection technologies, in which police bounced a radio wave off a moving vehicle with a device called a radar gun that determined the vehicle's speed by the Doppler-effect-moderated change in the wave's frequency.
Radar display Modern radar systems typically use some sort of raster scan display to produce a map-like image. In the past, notably during the early days of radar development, such displays were difficult to produce for a number of reasons.
Radar jamming and deception Radar jamming and deception is the intentional emission of radio frequency signals to interfere with the operation of a radar by saturating its receiver with noise or false information. There are two types of radar jamming: Mechanical and Electronic jamming.
Radar Love "Radar Love" was the worldwide breakthrough hit by the Dutch rock band Golden Earring. The song is considered by many to be among the greatest "driving songs" ever due to its lyrics about driving all night, its up-tempo beat, and its catchy sing-along chorus.
Radar Men from the Moon Radar Men from the Moon (Republic Studios, 1952) was the first Commando Cody serial, in 12 chapters, starring newcomer George Wallace (1917-2005) as Cody and Aline Towne as his sidekick Joan Gilbert, with serial veteran Roy Barcroft as the evil Retik, the Ruler of the Moon. The director was Fred C.
Radar O'Reilly Corporal Walter Eugene “Radar” O’Reilly is a fictional character in the M*A*S*H novels, film, the television series, the television movie W*A*L*T*E*R and two episodes of the series After M*A*S*H. The character was portrayed by Gary Burghoff in both the film and on television — the only actor from the film to reprise his role on television, aside from G.
Radar picket A radar picket is a radar-equipped ship, aircraft, or vehicle used to increase the radar detection range around a force to protect it from surprise attack. Often several detached radar units encircle a force to provide increased cover in all directions.
Radar Signal Characteristics A Radar System uses a Radio Frequency electromagnetic signal reflected from a target to determine information about that target. In any radar system, the signal transmitted and received will exhibit many of the characteristics described below.
Radar Tower Bremerhaven The Bremerhaven Radar Tower is a 106 metre reinforced concrete tower located in Bremerhaven, Germany. The tower, which was constructed between 1962 and 1965, accommodates numerous transmitting plants for maritime radio purposes, in addition to its radar equipment.
Radar warning receiver Typically fitted to military aircraft, radar warning receivers (RWR) detect the radio emissions of radar systems, whether ground-based or on-board other aircraft. The system is often capable of classifying the source of the radar by type (Pulsed or continuous wave radar, for example) and strength.
RadasĹ‚aĹ AstroĹski RadasĹ‚aĹ AstroĹski (October 25, 1887, Zapolle, Belarus – October 17, 1976, South River, NJ, United States) (Belarus: Đ Đ°Đ´Đ°Ńлаў ĐŃтроўŃкі; Polish: RadosĹ‚aw Ostrowski) was a Belarusian nationalist political activist and political leader, notably serving as president of the Belarusian Central Rada, a puppet Belarusian government under German administration in 1943-1944.
Radboud University Nijmegen The Radboud University Nijmegen, formerly called Catholic University of Nijmegen is the university of the Dutch city of Nijmegen. Currently, more than 17,000 undergraduates and postgraduates attend the university, which is about 8 % of all university students in the Netherlands.
Radcliffe Camera The Radcliffe Camera (often abbreviated to "the Rad Cam" in Oxford), is a building in Oxford, England, built by James Gibbs in 1737–1749 to house the Radcliffe Science Library. The building was funded by a £40,000 bequest from John Radcliffe, who died in 1714.
Radcliffe Choral Society The Radcliffe Choral Society was founded in 1898 by Elizabeth Cary Agassiz, the first President of Radcliffe College. The Radcliffe Choral Society became one of the oldest women's choirs in the nation and the oldest women's organization at Radcliffe.
Radcliffe Institute for Advanced Study The Radcliffe Institute for Advanced Study at Harvard is an educational institution in Cambridge, Massachusetts, one of the semiautonomous components of Harvard University. It is heir to the name and buildings of Radcliffe College, but unlike that historical institution, its focus is directed not at undergraduate education but postgraduate research.
Radcliffe Line The Radcliffe Line became the border between India and Pakistan in 1947. The partition of the British Indian Empire required that the territories to be assigned to the two new countries, generally had to have a population matching the majority.
Radcliffe on Trent Radcliffe on Trent is a large village and civil parish in the Rushcliffe borough of Nottinghamshire, with a population of around 8,000 It is to the east of Nottingham], and is close to but not quite part of the [[Greater Nottingham built-up area. However, the Greater Nottingham Partnership considers the whole of Rushcliffe to be part of Greater Nottingham.
Radcliffe Pitches The Radcliffe Pitches is Harvard University's premier female "a cappella" (or "a capella") singing ensemble, founded in 1975 at the Hasty Pudding Club. The group is made up of 12 to 16 Harvard undergraduates who perform at Harvard and internationally on the group's various tours.
Radcliffe Quad The Radcliffe Quadrangle (or Rad Quad as it is known to students of the College) is the second quadrangle of University College, Oxford, England. It was built in 1719 with money bequeathed to the College by John Radcliffe, a former student of the college and doctor to the king.
Radcom RadCom is the monthly magazine published by the Radio Society of Great Britain and is provided free to all corporate members of the Society. Typically 100 pages, it includes a mixture of news, theory, construction and technical articles of interest to the amateur radio community.
Radcot Bridge Radcot Bridge is a bridge carrying the A4095 over the River Thames, on the border of the traditional counties of Oxfordshire and Berkshire. It stands immediately south of the hamlet of Radcot (Oxfordshire) and not far north of Faringdon in Berkshire (now Oxfordshire).
Radcot Bridge (Battle) Radcot Bridge, Oxfordshire, England, was the scene of a battle (19 December 1387) between troops loyal to Richard II, led by court favourite Robert de Vere, and an army captained by Henry Bolingbroke, Earl of Derby. The previous year had seen increasing hostility between the young king and his magnates.
Rade Prica Rade Prica (born June 30, 1980) is a Swedish professional football midfield player who currently plays for Danish Superliga side Aalborg Boldspilklub. He previously played for Swedish clubs Helsingborgs IF and Ljungby IF, as well as German team Hansa Rostock.
Rade VrÄŤakovski Rade Vrchakovski-Vrchak is a Macedonian rap performer and songwriter. Internationally, he is most famous for writing the lyrics for Ninanajna, the song with which Elena Risteska represented Republic of Macedonia at the 2006 Eurovision Song Contest.
Radeberg Radeberg is a small town located approximately 20 kilometres north-east of Dresden in Saxony, Germany. The "Elektronik Radeberg GmbH" is located there which was formerly well known in East Germany for the production of portable television sets.
Radebeul Radebeul is a town (groĂźe Kreisstadt) in the Elbe valley, Saxony, Germany, a suburb of Dresden. It is well-known for its viticulture, a museum dedicated to writer Karl May and a narrow gauge railway connecting Radebeul with the castle of Moritzburg and the town of Radeburg.
Radebeul-Radeburg line The Radebeul-Radeburg line, known locally as the Lößnitzgrundbahn (Lössnitz Valley Railroad), is a gauge narrow gauge steam-hauled railway in the outskirts of Dresden, Germany. Primarily a tourist attraction, it maintains a year-round timetable and runs between Radebeul Ost station on the main Deutsche Bahn line between Dresden and Meissen and the small towns of Moritzburg and Radeburg north of Dresden.
Radegast (god) Radegast, also called Radigost, Radhost, Redigast, is a hypothetical West Slavic god of hospitality, fertility, and crops, associated with war and Sun. It is, however, questionable whether such a deity was in truth worshiped by pagan Slavs.
Radegast station Radegast is a former train station in ĹĂłdĹş, Poland. During World War II, in the course of the Holocaust, the station, located at the time near the boundary of the ĹĂłdĹş Ghetto, was the place where the Jewish inhabitants of ĹĂłdĹş were gathered for transport out of the Ghetto and the city to the Kulmhof and Auschwitz death camps.
Radek Martinek Radek Martinek (born August 31, 1976 in HavlĂÄŤkĹŻv Brod, Czechoslovakia) is an ice hockey defenceman who plays for the New York Islanders of the NHL. Martinek was an 8th round selection, 228th overall by the Islanders in the 1999 NHL Entry Draft.
Radelchis I of Benevento Radelchis I (also Radalgis) (d. 851) was the treasurer, then prince of Benevento from 839, when he assumed the throne upon the assassination (possibly his instigation) of Sicard and imprisonment of Sicard's brother, Siconulf, to his death, though in his time the principality was divided.
Radelchis II of Benevento Radelchis II (died 907) was the prince of Benevento from 881 to 900 with a long interruption during which the Byzantines and Spoletans vied for the principality. In 884 (or 885), he was deposed and exiled by his brother Aiulf.
Rademacher distribution In probability theory and statistics, the Rademacher distribution, named after Hans Rademacher is a discrete probability distribution which has a 50% chance for either 1 or -1. The probability mass function of this distribution is
Raden Raden (čžşéż) is a Japanese decorative craft used in the creation of lacquerware and woodwork, though it can be applied to metal and other surfaces. The basic underpinnings of Raden consist of variously applying the cut linings of mother-of-pearl, abalone, and other shells into the surface of the target lacquer or wood.
Raden Ayu Kartini Raden Ajeng (Adjeng) Kartini or, more accurately, Raden Ayu (Ajoe) Kartini, (April 21, 1879–September 13, 1904), was a prominent Javanese and an Indonesian national heroine. Kartini is known as a pioneer in the area of women's rights for native Indonesians.
Raden Wijaya Raden Wijaya (also known as Kertarajasa Jayawardhana) (1293-1309) was the founder and first raja of the Majapahit Empire on Java, Indonesia. The story of his founding of Majapahit was written in several records, including Pararaton and Negarakertagama.
Radeon Radeon is a brand of graphics processing units (GPU) that has been manufactured by ATI Technologies since 2000 and the successor to their Rage line. There are four different groups, which can be differentiated by the DirectX generation they support.
Radeon R520 ATI's "R520" core (codenamed Fudo) is the foundation for a line of DirectX 9c 3D accelerator x1000 video cards. It is ATI's first major architectural overhaul since the "R300" core and is highly optimized for Shader Model 3.
Rader's FFT algorithm Rader's algorithm (1968) is a fast Fourier transform (FFT) algorithm that computes the discrete Fourier transform (DFT) of prime sizes by re-expressing the DFT as a cyclic convolution. (The other algorithm for FFTs of prime sizes, Bluestein's algorithm, also works by rewriting the DFT as a convolution.
Rader, Helge & Gerson Rader, Helge & Gerson was a small law firm in Pasadena, California that was formed in the 1970s. It was created by Stanley Rader as a subsidiary of Worldwide Church of God and was intended to handle the legal affairs of the Church, its employees and ministers.
Radermachera Radermachera is a genus of 15-16 species of flowering plants in the family Bignoniaceae, native to southeastern Asia. They are evergreen trees reaching 5-40 m tall, with bipinnate or tripinnate leaves, and panicles of large bell-shaped, white, pink, pale purple or yellow flowers 5-7 cm diameter.
Radermachera sinica Radermachera sinica (also called "China Doll" or "Serpent Tree") is an evergreen tree in the family Bignoniaceae, native to the subtropical mountain regions of southern China and Taiwan. It can reach heights of up to 30 m tall and a trunk diameter of 1 m.
Radevormwald Radevormwald is a North Rhine-Westphalian municipality in the Oberbergischer Kreis, about 50 km east of Cologne, in Germany. It is one of the oldest towns in the Bergischen Land, formerly the County and Duchy of Berg.
Radfan Radfan or the Radfan Hills is a region of the Republic of Yemen. In the 1960s, the area was part of a British protectorate of Dhala (a member of the Federation of South Arabia) and was the site of intense fighting during the Aden Emergency.
Radford (band) Radford is an alternative rock band from Los Angeles, California. The band formed after lead singer and band nucleus Johnny Radford Mead emigrated from Oxford, England to Los Angeles; there he met guitarist Chris Hower and began touring with a full band.
Radford University Radford University is a public, state-funded, comprehensive university, located in the City of Radford, in Southwestern Virginia. Radford features a highly diverse liberal arts curricula for undergraduates, along with multiple graduate programs.
Radford, Nottingham Radford is an inner-city area of Nottingham, located just outside the city centre itself. In recent years it has suffered from problems related to crime and anti-social behaviour (akin to the nearby district of Hyson Green), although there are signs that recent efforts by the authorities may be improving the situation.
Radha Radha (Devanagari: राधा) is a famous female personality from Hindu, (Vedic) tradition, also known as Radharani, prefixed with the respectful term 'Srimati' by devout followers. Radha is almost always depicted alongside her paramour Krishna, and has a highly prominent feature within the philosophy of today's Gaudiya Vaishnava religions who believe Radha to be the original goddess Lakshmi.
Radha Nilia Radha Nilia, born March 11, 1980 in Palo Alto, California, is an actress, director and producer. She began her career in film and entertainment as a young teenager when she became a model and actress in Manila, Philippines.
Radha Soami Radhasoami (also Radhasoami Satsang) was founded in 1861 by Shri Shiv Dayal Singh Sahab who preached that human beings could reach God realization only through listening to the shabad / shabd (sound), or nam (name), of the Lord.
Radhabinod Pal Justice Radhabinod Pal was an Indian jurist. He was the lone Indian member to be appointed to the International Military Tribunal for the Far East's trials of Japanese war crimes committed during the second World War.
Radhanath Sikdar Radhanath Sikdar (Bangla: রাধানাথ শিকদার) (1813-1870) was a Bengali Indian mathematician who calculated the height of Peak XV in the Himalaya and discovered it to be the tallest mountain above sea level. Peak XV was later renamed Mount Everest.
Radhanath Swami Radhanath Swami is a leading member and guru within the International Society for Krishna Consciousness who works largely from Mumbai in India and also travels exstensively throughout Europe and America. He is well known throughout the society largely through his lectures on the philosophy of Gaudiya Vaishnavism.
Radhika Coomaraswamy Radhika Coomaraswamy was appointed by then United Nations Secretary-General Kofi Annan as Under-Secretary-General, Special Representative for Children and Armed Conflict in April 2006. In this capacity, she serves as a moral voice and independent advocate to build awareness and give prominence to the rights and protection of boys and girls affected by armed conflict.
Radhouane Charbib Radhouane Charbib () was recognized by the Guinness Book of Records as the tallest living man, until January 15, 2005 when Xi Shun was measured at Chifeng City Hospital, Inner Mongolia, China, and recorded as being 2 millimetres taller.
Radia Perlman Radia Perlman is a software designer and network engineer sometimes referred to as the 'Mother of the Internet'. She is most famous for her invention of the spanning-tree protocol which is fundamental to the operation of network bridges.
Radial (radio) In radio, evenly-spaced points along evenly-spaced radials on a map are used to determine average elevation above mean sea level (AMSL) within a radio station's coverage area (including broadcast stations and mobile phone towers, among others). This in turn determines height above average terrain (HAAT), which greatly affects a station's range (more so than effective radiated power), and potential for interference with other stations.
Radial arm maze The radial arm maze was designed by Olton and Samuelson (1976) to measure spatial learning and memory in rats. The apparatus consisted of eight equidistantly-spaced arms, each about 4 feet long, and all radiating from a small circular central platform.
Radial cleavage Radial cleavage is a cleavage pattern characteristic of some animal groups, for instance vertebrates and echinoderms, in which the spindle axes are parallel or at right angles to the polar axis of the oocyte. In most other groups, such as annelids and mollusks, embryos undergo spiral cleavage, in which the cleavage planes are oriented obliquely to the polar axis of the oocyte.
Radial collateral ligament (elbow) The radial collateral ligament (external lateral ligament) is a short and narrow fibrous band, less distinct than the ulnar collateral, attached, above, to a depression below the lateral epicondyle of the humerus; below, to the annular ligament, some of its most posterior fibers passing over that ligament, to be inserted into the lateral margin of the ulna.
Radial collateral ligament (thumb) The radial collateral ligament (external lateral ligament, radial carpal collateral ligament) extends from the tip of the styloid process of the radius to the radial side of the navicular, some of its fibers being prolonged to the greater multangular bone and the transverse carpal ligament.
Radial distribution function In computational mechanics and statistical mechanics, a radial distribution function (RDF), g(r), describes how the density of surrounding matter varies as a function of the distance from a distinguished point. This is normalized by the average density such that the function goes to 1 far from the distinguished point when the medium is even slightly disordered.
Radial engine The radial engine is an internal combustion engine configuration in which the cylinders point outward from a central crankshaft like the spokes on a wheel. This configuration was very commonly used in aircraft engines before being superseded by turboshaft and turbojet engines.
Radial glia Radial glial cells are a pivotal cell type in the developing CNS involved in key developmental processes, ranging from patterning and neuronal migration to their newly described role as precursors during neurogenesis. The term 'radial glial cell' refers to their two major characteristics, their long radial processes extending from the ventricular zone (VZ) to the pial surface and their glial properties, such as the content of glycogen granules or the expression of the astrocyte-specific glutamate transporter or the glial fibrillary acidic protein (GFAP).
Radial notch The radial notch of the ulna (lesser sigmoid cavity) is a narrow, oblong, articular depression on the lateral side of the coronoid process; it receives the circumferential articular surface of the head of the radius.
Radial spoke The radial spoke is a multi-unit protein structure found in the axonemes of eukaryotic cilia and flagella. Although experiments have determined the importance of the radial spoke in the proper function of these organelles, its structure and mode of action remain poorly understood.
Radial styloid process The lateral surface of the radius is prolonged obliquely downward into a strong, conical projection, the styloid process, which gives attachment by its base to the tendon of the Brachioradialis, and by its apex to the radial collateral ligament of the wrist-joint.
Radial tire A radial tire (more properly, a radial-ply tire) is a particular design of automotive tire (in British English, tyre). The design was originally developed by Michelin in 1946 but, because of its advantages, has now become the standard design for essentially all automotive tires.
Radial velocity Radial velocity is the velocity of an object in the direction of the line of sight. The light of an object with a substantial radial velocity will be subject to Doppler effect, so the wavelength of the light increases for receding objects (redshift) and decreases for approaching objects (blueshift).
Radialene [n]Radialenes are alicyclic organic compounds containing n cross-conjugated exocyclic double bonds. The double bonds are commonly alkene groups but those with a carbonyl (C=O) group are also called radialenes Effect of Overcrowding in [n]Radialenes on the Synthesis of Bis[4]radialenesMenahem Kaftory, Mark Botoshansky, Shunji Hyoda, Toshihiro Watanabe, and Fumio Toda J.
Radian group Radian Group Inc. () is a leading global credit enhancement company, offering mortgage insurance, financial guaranty insurance for public finance, asset-backed and structured finance transactions, reinsurance and other financial services.
Radiance Radiance and spectral radiance are radiometric measures that describe the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle in a specified direction. They are used to characterize both emission from diffuse sources and reflection from diffuse surfaces.
Radiance (play) Radiance is a play by Australian author and playwright Louis Nowra, which focuses on three Aboriginal half-sisters, who have gone their separate ways in life, and are reunited when they arrive for their mother's funeral service. Radiance has been written both as a stageplay and a screenplay.
Radiance War The Radiance War, also called Domino War was an interstellar conflict in which the Skolian Imperialate and the Eubian Concord annihilated much of each other, in the Saga of the Skolian empire books by Catherine Asaro.
Radiant (comics) The Radiant is a superhero from the DC Comics Universe. He was created as part of the backstory to the Doomsday storyline following The Death of Superman, in which the origin of Doomsday as well as his future (and that of Superman's) is revealed.
Radiant (meteor shower) The radiant or apparent radiant of a meteor shower is the point in the sky that (to a planetary observer) meteors appear to originate from. The Perseids, for example, are meteors which appear to come from a point within the constelation of Perseus.
Radiant energy Radiant energy is the energy of electromagnetic waves. The term is most commonly used in the fields of radiometry, solar energy, heating and lighting, but is also used less frequently in other fields (such as telecommunications).
Radiant flux In radiometry, radiant flux or radiant power is the measure of the total power of electromagnetic radiation (including visible light). The power may be the total emitted from a source, or the total landing on a particular surface.
Radiant heating Radiant heating is a heating system which heats a building through radiant heat, rather than other conventional methods including convection heating. The heat energy is emitted from a warm element (floor, wall, overhead panel) and warms people and other objects in rooms rather than directly heating the air.
Radiate (coin) The radiate or Post-reform radiate (the actual name, like many Roman coins of this time, is unknown), was introduced by Diocletian during his reforms. It looked very similar to an Antoninianus even with a radiated crown, except it misses the XXI that numismatists believe was to represent 20 parts bronze to 1 part silver.
Radiation Radiation in physics is the process of emitting energy in the form of waves or particles. Various types of radiation may be distinguished, depending on the properties of the emitted energy/matter, the type of the emission source, properties and purposes of the emission, etc.
Radiation budget The radiation budget represents the balance between incoming energy from the Sun and outgoing thermal (longwave) and reflected (shortwave) energy from the Earth. The "budget" is an analogy between conservation of energy and household budgeting.
Radiation condition For the Helmholtz equation Arnold Sommerfeld defined the condition of radiation as "the sources must be sources, not sinks of energy. The energy which is radiated from the sources must scatter to infinity; no energy may be radiated from infinity into ...
Radiation Exposure Compensation Act The United States Radiation Exposure Compensation Act (RECA) is a federal statute providing for the monetary compensation of people who contracted cancer and a number of other specified diseases as a direct result of their exposure to atmospheric nuclear testing undertaken by the United States during the Cold War, or their exposure to high levels of radon while working in uranium mines. It was passed by Congress on October 5, 1990.
Radiation hardening Radiation hardening is a method of designing and testing electronic components and systems to make them resistant to damage or malfunctions caused by high-energy subatomic particles and electromagnetic radiation, such as would be encountered in outer space, high-altitude flight and around nuclear reactors.
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