Encyclopedia

Nth Country Experiment The Nth Country Experiment was an experiment conducted by Lawrence Livermore National Laboratory starting in May 1964 which sought to assess the risk of nuclear proliferation. The experiment consisted in paying three recent young physicists who had just received their PhDs, though had no prior weapons experience, to develop a working nuclear weapon design using only unclassified information, and with basic computational and technical support.
Nth root In mathematics, an nth root of a number a is a number b, such that bn=a. When referring to the nth root of a real number a it is assumed you are talking about the principal nth root of the number, which is denoted sqrt[n]{a} with the radical symbol (sqrt{,,}).
Ntl:hell ntl:hell is an independent consumer lobby group designed by customers of NTL to discuss issues and create a community where people can submit their own views of the company, and how to make products or services better, ntl:hell is currently the most active ntl: related forum around and provides a wealth of information and support.
Ntlhoi Motsamai Ntlhoi Motsamai (born 1963) is a politician in Lesotho, currently the speaker of the National Assembly of Lesotho. She is the youngest speaker in Africa, being elected to parliament in 1995 and selected to be speaker in 1999 and re-elected in 2002.
Ntozake Shange Ntozake Shange (pronounced En-toe-ZAHK-kay SHONG-gay) (born October 18 1948) is an African American playwright, performance artist, and writer who is best-known for her Obie Award winning play for colored girls who have considered suicide/when the rainbow is enuf. She also wrote Betsey Brown, a novel about an African American girl who runs away from home.
NtrC NtrC is the name of the protein necessary for the procaryotic regulon transcription factor sigma N (sigma 54) to form an open complex with RNA polymerase in order to activate glnA transcription. The open --> closed conformational change of the sigmaN-RNA polymerase complex around the glutamine synthetase gene promoter requires ATP and involves the 180 degree turn of the DNA so that the NtrC protein (bound to two -140 and -108 upstream enhancer regions) may interact directly with the promoter-bound sigma N-RNA polymerase complex.
Ntropy NTropy is an application framework under development at the Pittsburgh Supercomputing Center and the University of Pittsburgh Department of Physics and Astronomy that enables the rapid development of any algorithms that uses a kd-tree for running on a parallel computer. In its current form, it is geared towards astrophysics data, which is generally point-like in nature meaning that most efficient analysis algorithms tend to employ tree data structures.
NT-3 Neurotrophin-3, or NT-3 is a neurotrophic factor, in the NGF (Nerve Growth Factor)-family of neurotrophins. It is a protein growth factor which has activity on certain neurons of the peripheral and central nervous system; it helps to support the survival and differentiation of existing neurons, and encourages the growth and differentiation of new neurons and synapses.
NT-based In Microsoft Windows operating systems, the term NT-based describes the architecture of the operating system. NT-based means that the operating system is running standalone, whereas an MS-DOS based operating system, such as Windows 98, has MS-DOS running "underneath" the system.
NTBC NTBC is a type of herbicide extracted from plants to treat certain forms of tyrosinaemia (type 1). It inhibits the enzyme (4-hydroxyphenylpyruvic acid oxidase) thus prevents the formation of MALEYLACETOACETIC ACID and FUMARYLACETOACETIC ACID which has the potential to be converted to succinyl acetone (a toxin substance that damage liver and kidney).
NTelos NTELOS () is a telecommunications company based in Waynesboro, Virginia. NTELOS is a provider of PCS telephone services to customers in the mid-Atlantic region, as well as a provider of local telephone service and Internet access to customers in Virginia and West Virginia.
NTEN: The Nonprofit Technology Enterprise Network NTEN is an international nonprofit organization founded in 2000. NTEN is primarily a community for those interested in the use of technology to support nonprofit organizations and issues, nonprofit careers, volunteering, events, and resources, and the organization serves its members by helping them more effectively use technology.
NTFS 3G NTFS-3G is an open source, freely available NTFS driver for Linux, Mac OS X, FreeBSD and BeOS. Unlike the NTFS driver included in the Linux kernel, its support for writing files has very few limitations: files of any size can be created, modified, renamed, moved, or deleted on NTFS partitions, with the exception of compressed and encrypted files.
NTG 03 Naval Task Group 03 had been intended to take part in FPDA exercises in the Asia-Pacific region but was diverted for involvement in the 2003 Iraqi War. Eventually part of the Naval Task Group including HMS Liverpool, HMS Marlborough and RFA Grey Rover departed Gulf waters, after the intervention phase of the Iraq War (2003), en route for Exercise Flying Fish, with Commonwealth-partners and members of the Five Power Defence Arrangements such as Malaysia, Singapore, Australia and New Zealand.
NTI Tension Suppression System The NTI Tension Suppression System is a new FDA-approved method of headache and migraine prevention that is said to work by reducing night-time teeth clenching. This often intense nocturnal activity is purported to lead to a hyperactivity of the trigeminal nerve, often triggering typical migraine events.
NTIA Manual of Regulations and Procedures for Federal Radio Frequency Management Also known as the Red Book, this publication of the Office of Spectrum Management of the National Telecommunications and Information Administration or NTIA, is the official source for all technical regulations relating to the use of the electromagnetic frequency spectrum. The NTIA is the regulating agency for all federal spectrum use.
NTLDR NTLDR (abbreviation of NT Loader) is the boot loader for Windows NT, including some of its later versions (2000/XP/Server 2003). NTLDR does not appear in Windows Vista, which divides the functionality of NTLDR between two new components: winload.
NTN Buzztime NTN Buzztime () is a company which produces interactive entertainment across many different platforms. Its most well-known product (simply called Buzztime) is a system which serves trivia and other games over a national network to over 3,000 bars and restaurants in the United States and Canada, as well as to Great Britain.
NTNU Parachute Club NTNU Parachute Club is a student parachute club with connections to Norwegian University of Science and Technology, and is located at Gløshaugen in Trondheim, Norway, with its base at Fagerhaug airport. The club was started in 1968 as the the second parachute club in Norway, and has about 300 members where most of them are studying or has been studying at NTNU.
NTNUI The Norwegian University of Science and Technology's Athletic Association, often referred to as NTNUI (Norges Teknisk og Naturvitenskapelige Universitets Idrettsforening), is the largest sports club in Norway with more than 10,000 members and a variety of participators on all levels of skills in more than 50 different sports. The athletic association is formally connected to the Norwegian University of Science and Technology located in Trondheim.
NTP binding site An NTP binding site is a type of binding site found in NMP kinases, N can be adenosine or guanosine. A P-loop is one of the structural motifs common for NTP binding sites, it interacts with the bound nucleotide's phosphoryl groups.
NTP pool The NTP pool is a dynamic collection of networked computers that volunteer to provide highly accurate time via the Network Time Protocol to clients worldwide. The machines that are "in the pool" are part of the pool.
NTP server misuse and abuse NTP server misuse and abuse covers a number of practices which cause damage or degradation to an NTP server, ranging from flooding it with traffic (effectively a DDoS attack) or violating the server's access policy or the NTP rules of engagement. One incident was branded NTP vandalism in an open letter from Poul-Henning Kamp to the router manufacturer D-Link in 2006.
NTR Telugu Desam Party (Lakshmi Parvathi) NTR Telugu Desam Party (Lakshmi Parvathi) (NTRTDP(LP)) is a regional political party in the India state of Andhra Pradesh. The party was founded by Lakshmi Parvathi, the widow of the film star and Telugu Desam Party politician N.
NTRUEncrypt NTRUEncrypt, also known as the NTRU encryption algorithm, is an asymmetric key encryption algorithm for public key cryptography. It was invented in the mid-1990s and is patented and endorsed by NTRU Cryptosystems, Inc..
NTRUSign NTRUSign, also known as the NTRU Signature Algorithm, is a public key cryptography digital signature algorithm based on the GGH signature scheme. It was first presented at the rump session of Asiacrypt 2001 and published in peer-reviewed form at the RSA Conference 2003.
NTSC NTSC is the analog television system in use in Canada, Japan, South Korea, the Philippines, the United States, and some other countries, mostly in the Americas (see map). It is named for the National Television System(s) Committee, the U.
NTT Communications Corp or NTT Com, is a subsidiary of Nippon Telegraph and Telephone] (NTT) Corporation (, ) - one of the world's largest telecommunications companies. NTT Com provides high-quality, technologically advanced network management, security and solution services to consumers, corporations and governments on a global basis, with a special focus on the Asia-Pacific region.
NTT InterCommunication Center NTT InterCommunication Center (ICC) is a media art gallery in Tokyo Opera City Tower in Shinjuku, Tokyo, Japan. It was established by NTT to commemorate the 100th anniversary of telephone service in Japan and opened in 1997.
NTUC FairPrice NTUC FairPrice Co-Operative (Chinese: 新加坡职工总会平价合作社) is a supermarket chain based in Singapore and the largest in the country. The company is a co-operative of the National Trades Union Congress or NTUC.
NTV Canada NTV Canada (НТВ in Cyrillic) is a Canadian category 2 Russian language digital cable television channel and is owned by Ethnic Channels Group. It broadcasts programming from NTV Russia as well as local Canadian content.
NTV Russia NTV, a Russian television channel (НТВ in Cyrillic) was a pioneer in the post-Soviet independent television media. A subsidiary of Media Most holding, which was initially owned by Vladimir Gusinsky was later taken over by state-owned Gazprom causing a major controversy.
Nu alpha phi ΝΑΦ, (Nu Alpha Phi, Nappy, Nappies) is a non-national, co-educational fraternal organization of Pomona College in Claremont, CA. Originally founded in 1920 as an all-male organization to promote brotherhood in Christ; Christian brotherhood is no longer a part of the organization, and since 1970 it has been co-educational, welcoming Brothers and Sisters from diverse creeds and origins.
Nu Da Şpagă Nu Da Şpagă (Don't Bribe) is a national anti-corruption campaign launched in Romania in 2004 to deal with the problem of corruption in that country. The campaign is co-ordinated by Transparency International with the support of the European Union, which Romania has joined since 2007.
Nu Flavor Nu Flavor is a R&B quartet from Long Beach, California consisting of Jacob Ceinceros (baritone), Anthony Dacosta (tenor), Rico Luna (alto), and Frank Pangelinan (tenor/lead). Soon after forming the band, they found "Latin Urban Idolmaking Guru" Bruce Johnson, and enlisted him as Manager and under his direction, they created a cover of Journey's hit song, Open Arms, and eventually the recording found it's way to Reprise president Howie Klien.
Nu Hydrae Nu Hydrae (ν Hya / ν Hydrae) is a Class K2, third-magnitude star in the constellation Hydra. It is sometimes called by the proper names Sherasiph and Pleura, each name referring to the "ribs" or "side" (of Hydra) in Arabic and Greek, respectively.
Nu jazz Nu jazz is an umbrella term coined in the late 1990s to refer to music styles that blend jazz textures and sometimes jazz instrumentation, funk, electronic dance music, and free improvisation<REF>Definition from Sergey Chernov, June 7, 2002, in The St. Petersburg Times Also written nu-jazz or nujazz, it is sometimes called electronic jazz, electro-jazz, e-jazz, jazztronica, jazz house, phusion, or future jazz.
Nu metal Nu metal (also called new metal, aggro metal or nĂĽ metal using the traditional heavy metal umlaut) is a musical genre that has origins in the mid 1990s. It typically fuses influences from the grungeand alternative metal] of the early 1990s with [[hip hop music|hip hop, electronic music and other metal genres, most often thrash metal and groove metal.
Nu Ophiuchi Nu Ophiuchi (ν Oph / ν Oph) is a Class K0, third-magnitude star in the constellation Ophiuchus. It carries the traditional Latin name Sinistra, meaning "left" or "left hand" despite the fact that Nu Ophiuchi marks the Serpent Bearer's right hand.
Nu Pagadi Nu Pagadi was a German pop band, formed in the autumn of 2004 on the fourth season of international TV sensation Popstars. Originally a quartet, later a trio the group describes their own musical style as "Glam Rock"; In fact the attribute "Pop with rockmusic elements" fits better.
Nu skool breaks Nu skool breaks is a form of breakbeat music genre, combining the futuristic sense of drum and bass, the sounds of techno, the bass of dub and the beats from real drummers and drum machines. The genre also prominently features electro and hip hop influences and tracks typically run at 130 to 140 bpm.
Nu tändas tusen juleljus Nu tändas tusen juleljus, often called just Nu tändas, is a Christian traditional Swedish language Christmas song, written in 1898 by the Swedish song text writer Emmy Köhler (both text and melody). The song is about lights at Christmas, from candels and stars.
Nu tändas tusen juleljus (album) Nu tändas tusen juleljus is a Christmas album, recorded in 1980 by Swedish pop singer Agnetha Fältskog and her daughter Linda Ulvaeus. The album was recorded in November 1980 and at first planned to be released for Christmas 1980.
Nu Tauri Nu Tauri (ν Tau / ν Tauri) is a star in the constellation Taurus. It has the traditional name Furibundus, meaning "The Raging", derived from the Latin title Taurus Furibundus, "The Raging Bull".
Nu Virgos Nu Virgos (also known as ВИА Гра - an allusion toVia Gra due to first three letters, which stand for vocal-instrumental band) is a Ukrainian/Russian girl group, that hit the charts in their country in September 2000 with their first single.
Nu'uuli Nu'uuli is the fifth-largest village in land area in American Samoa and the second-largest on Tutuila Island. It lies near the center of Tutuila Island, and straddles the line between the Eastern District and the Western District.
Nu-Earth Nu-Earth is the name of a planet near 2 suns and a wormhole that is the main setting for the Rogue Trooper fictional universe. Due to its strategic importance the Southers and the Norts are fighting over the planet.
Nu-folk Nu-folk is the catch-all term used to describe the loose grouping of musicians working in the folk music idiom. A willingness to utilise new technology and mix various disparate styles is a key facet of the genre.
Nu-Mixx Klazzics Nu-Mixx Klazzics is a remix album by 2Pac, released in 2003 by Death Row Records. The album includes several songs from All Eyez on Me, with new backing tracks and new guest vocals from artists such as Aaron Hall, K-Ci and JoJo, and Tha Outlawz.
Nu-NRG Nu-NRG is a form of electronic dance music that evolved from the 1980s hi-NRG. Pioneered by Peter Harris (Blu Peter) in the late 1990s, Nu-NRG is similar to epic trance and mainstream European house music but harder and faster beat.
Nu1 Arae Nu1 Arae (Nu1 Arae / ν1 Ara / ν1 Arae) is an triple star system approximately 820 light years from the Earth. The primary component, ν1 Arae A, is an eclipsing binary of which both components are detached blue-white B-type main sequence dwarfs which do not fill their Roche lobes.
Nuagaza tombs The long brick tombs generally known as Nuagaza tombs, or the "nineyarder tombs". This term is generally applied, in the sub-continent, to the warriors and martyrs of Islam who, at the time of the early invasions of the Muslims fell in action against the Hindus.
Nuages Gris Nuages Gris (Grey Clouds) is a piano solo composed by Franz Liszt in 1881. In his later years, he became more experimental, and unlike most of his works that are virtuoso in nature, this one is quite short and simple.
Nuacht RTÉ Nuacht RTÉ is an Irish language news bulletin broadcasted by the public RTÉ ONE station of Ireland on weekdays, usually at 17:20. It's presented mainly by Siún Nic Gearailt, sometimes by Seamus O'Scanlain, Cormac O'hEadhra, Bridog Ni Bhuachalla or Sinead Crowley.
Nuala Ahern Nuala Ahern (born 5 February 1949) is a former Irish Green Party member of the European Parliament representing Leinster, on the east coast of Ireland, from 1994-2004. Nuala became active in politics in 1991 becoming elected to Wicklow County Council.
Nuala Anne McGrail Nuala Anne McGrail is a protagonist in a series of nine mystery novels by Roman Catholic priest and author Father Andrew Greeley. The novels in the series include Irish Gold (1994), Irish Lace (1996), Irish Whiskey (1998), Irish Mist (1999), Irish Eyes (2000), Irish Love (2001), Irish Stew (2002), Irish Cream (2005), and Irish Crystal (2006).
Nuala Haughey Nuala Haughey is an award-winning Irish journalist currently based in Jerusalem. Born in Lurgan Co Armagh in 1968, she studied law at Belfast's Queens University and later joined The Irish Times as social affairs correspondent.
Nuala O'Faolain Nuala O'Faolain (pronounced "noola o-fway-lawn") (born in 1942 in Dublin) is an Irish writer known for her autobiographies Almost There and Are You Somebody? as well as for her 2005 book The Story of Chicago May.
Nuala O'Halpin Nuala is a singer/songwriter born and raised in North London, now living in Hertfordshire, but with roots grounded in her Irish/Spanish parentage. Previously a member of South London based bands Melontribe and Scary Big Fish, she has established herself as a respected songwriter and solo performer with appearances at acoustic venues around central London and on radio.
Nuamthong Phaiwan Nuamthong Phaiwan (Thai: นวมทอง ไพรวัลย์) was a Bangkok, Thailand taxi-driver who drove his taxi into a tank in protest after the military coup of 2006. He was later found hanging from a pedestrian footbridge.
Nuance (Dance music act) Nuance is also a dance music group formed by producer/arranger Ron Dean Miller and featured Vikki Love on vocals. They charted three hits on the Hot Dance Music/Club Play chart in the eighties, including "Loveride," which hit #1 in 1985.
Nuanced voices on the Reconciliation, Tolerance, and Unity Bill (Fiji) In the midst of the strident public statements both for and against the legislation to establish a Reconciliation and Unity Commission with the power, subject to presidential approval, to compensate victims and pardon persons involved in the coup d'Ă©tat which deposed the elected government in May 2000, a number of voices have taken more nuanced positions, or have called for moderation and mutual understanding.
Nuçi's Space Located in Athens, Georgia, Nuçi's Space is a resource center for local musicians.It seeks not to only provide rehearsal and performance space, but to support the well-being of the music community, run by the nonprofit Nuçi Phillips Memorial Foundation.
Nu‘uanu Pali Tunnels The Nuuanu Pali Tunnels are a set of four highway tunnels (two in each direction) on the Pali Highway (Hawaii State Highway 61) which pass through the Nuuanu Pali. These tunnels serve as one of three trans-Koolau routes between Honolulu (leeward Oahu) and the communities of windward Oahu.
Nuba Nuba is a collective term used for the peoples who inhabit the Nuba Mountains, in Kordofan province, Sudan, Africa. Although the term is used to describe them as if they were a single tribe, in fact the Nuba are quite diverse, and are made up of different ethnic and linguistic groups.
Nuba Mountains The Nuba Mountains are a mountain range in Kordofan, a province in central Sudan, Africa. The mountains cover an area roughly 40 miles wide by 90 miles long, and are 1500 to 3000 feet higher in elevation than the surrounding plain.
Nubanusit Lake Nubanusit Lake is a 715-acre water body located in Cheshire and Hillsborough counties in southwestern New Hampshire, United States, in the towns of Nelson and Hancock. The outlet of the lake is Nubanusit Brook, a tributary of the Contoocook River in the Merrimack River drainage basin.
Nubar Pasha Boghos Nubar Pasha (January 1825, Smyrna, Ottoman Empire - January 14, 1899, Paris) (Arabic: بوغوص نوبار باشا) was an Egyptian statesman and politician of Armenian descent and the first Prime Minister of Egypt. He served as Prime Minister of Egypt three times during his career.
Nubi language The Nubi language (also called Ki-Nubi) is a Sudanese Arabic-based creole language spoken in Uganda around Bombo and Kenya around Kibera by the descendants of Emin Pasha's Sudanese soldiers, settled there by the British. It was spoken by about 15,000 people in Uganda in 1991 (according to the census), and an estimated 10,000 in Kenya; another source estimates about 50,000 speakers as of 2001.
Nubian Desert The Nubian Desert, is in the eastern region of the Sahara Desert, it spans 50, 000 km2 or 157,000 square miles of northeastern Sudan between the Nile and the Red Sea, at .. The arid region, a largely sandstone plateau, has lots of wadis flowering toward the Nile.
Nubian pyramids The area of the Nile valley known as Nubia that lies within present day Sudan was home to three Kushite kingdoms during antiquity: the first with its capital at Kerma (2400–1500 BC), that centred on Napata (1000–300 BC) and, finally, that of Meroë (300 BC–300).
Nubian Sandstone Aquifer System The Nubian Sandstone Aquifer System is located in the Eastern Sahara and north-eastern Africa. It covers just over two million square kilometres, including north-west Sudan, north-eastern Chad, south-estern Libya, and most of Egypt.
Nubian Swell The Nubian Swell is a geologic structural uplift in northern Africa that trends east-west and separates the lower Nile of Egypt from the Sudan basin. The Nubian Swell has been geologically active since early Mesozoic times, and portions are still active.
Nubility Nubility is the state of being marriageable. In a given society, the level of nubility (the amount of people who remain single), as well as the level of nuptiality (those who get married) provides important information regarding its demography.
Nubiology Nubiology is the designation given to the primarily archaeological science that specialises in the scientific study of Ancient Nubia and its antiquities. It is sometimes also applied to scientists who study other ancient lands and cultures south of Ancient Egypt.
Nubots Nubots (pronounced "New-bots") is a club started by Andrew Michaelson at Northeastern University in Boston, Massachusetts. The club is devoted to building combat robots, following in the footsteps of TV shows such as Battlebots.
Nubra Valley Nubra Valley is situated about 150 km north of Leh, the capital town of Ladakh, Jammu and Kashmir, India. The common way to access this valley is to travel over the Khardung La from Leh where one will first encounter the Shyok valley.
Nubuck Nubuck is top-grain cattle hide leather that has been sanded or buffed on the grain side, or outside, to give a slight nap of short protein fibers, producing a velvet-like surface. It is resistant to wear, and may be white or coloured.
NuBus NuBus is a 32-bit parallel computer bus, originally developed at MIT as a part of the NuMachine workstation project, and eventually used by Apple Computer, NeXT Computer and Texas Instruments. It is no longer widely used outside of the embedded market.
Nuccio Bertone Nuccio Bertone (Torino, July 12, 1912 – Torino, February 25, 1997) was a famed automobile designer and constructor. He took over Carrozzeria Bertone from his father, Giovanni after World War II, growing the small business to a carbuilding and designing powerhouse.
Nucellar embryony Nucellar embryony (notated Nu+) is a form of seed reproduction that occurs in certain plant species, including many citrus varieties. During the germination of seeds from plants that possess this genetic trait, the nucellar tissue which surrounds the embryo sac can produce additional embryos (polyembryony) which are genetically identical to the parent plant.
Nuclear aircraft A nuclear aircraft is an aircraft powered by nuclear energy. Research into them was pursued during the Cold War by the United States and the Soviet Union as they would allow a country to hypothetically keep nuclear bombers in the air for extremely long periods of time, a useful tactic for nuclear deterrence.
Nuclear and radiation accidents This article covers notable accidents involving nuclear devices and radioactive materials. In some cases, a release of radioactive contamination occurs, but in many cases the accident involves a sealed source or the release of radioactivity is small while the direct irradation is large.
Nuclear arms race The nuclear arms race was a competition for supremacy in nuclear weapons between the United States and Soviet Union during the Cold War. During the Cold War, in addition to the American and Soviet nuclear stockpiles, other countries also developed nuclear weapons as well, though none engaged in warhead production on the same size as the two superpowers.
Nuclear astrophysics Nuclear astrophysics is the branch of nuclear physics that deals with explaining the formation, via nuclear reactions, of all the naturally occurring chemical elements in the universe. These nucleosynthesis processes occurred during the big bang (see Big Bang nucleosynthesis) and continue to take place in all hot astrophysical objects such as stars, novae and supernovae.
Nuclear Age Peace Foundation The Nuclear Age Peace Foundation is a non-profit, allegedly non-partisan international organization on the roster in consultative status to the United Nations Economic and Social Council. The organization is founded for and noted for its opposition to nuclear arms.
Nuclear bag fiber 1 to 3 nuclear bag fibres lie in the centre of each intrafusal muscle fibre of a muscle spindle. Each has a large number of nuclei concentrated in bags and they cause excitation of both the primary and secondary nerve fibres.
Nuclear blackmail Nuclear blackmail is a form of nuclear strategy in which an aggressor uses the threat of use of nuclear weapons to force an adversary to perform some action or make some concessions. It is a type of extortion, related to brinkmanship.
Nuclear bunker buster Bunker-busting nuclear weapons, also known as earth-penetrating weapons (EPW), are a type of nuclear weapon designed to penetrate into soil, rock, or concrete to deliver a nuclear warhead to a target. These weapons would be used to destroy hardened, underground military bunkers buried deep in the ground.
Nuclear crime Nuclear crime is the best term for criminal acts which involve the use of nuclear or radioactive materials. These crimes include both acts where a person intended to cause harm to another and also acts where a person acted with "reckless indifference" to the safety and welfare of others.
Nuclear cross section The nuclear cross section of a nucleus is used to characterize the probability that a nuclear reaction will occur. The concept of a nuclear cross section is somewhat difficult to conceptualize but can be quantified physically in terms of "characteristic area" where a larger area means a larger probability of interaction.
Nuclear Command Authority The Nuclear Command Authority (NCA) is the name given to the respective agencies of the Indian and Pakistani governments responsible for deciding on the deployment of each country's nuclear weapons stockpile. The Pakistani agency was created in February 2000, and its Indian counterpart was launched on 2004-01-03.
Nuclear Criticality Safety Nuclear criticality safety is a field of nuclear engineering dedicated to the prevention of an inadvertent, self-sustaining nuclear chain reaction. Additionally, nuclear criticality safety is concerned with mitigating the consequences of a nuclear criticality accident.
Nuclear data Nuclear data groups all experimental data relevant for nuclear physics and nuclear applications. It includes a large and non-exhaustic number of physical quantities, like scattering and reaction cross sections (which can also be measured as functions of e.
Nuclear decommissioning The decommissioning of nuclear facilities is sometimes referred to as nuclear decommissioning, to mark the difference between 'conventional' decommissioning and dismantling projects. In fact, the main difference to the dismantling of a 'conventional' facility is the possible presence of radioactive or fissile material in a nuclear facility, that requires special precautions.
Nuclear density Nuclear density is the density of the nucleus of an atom, averaging about 1018 kg/m3. The descriptive term nuclear density is also applied to situations where similarly high densities occur, such as within neutron stars.
Nuclear Depth Bomb A Nuclear Depth Bomb (NDB) is the nuclear equivalent of the conventional depth charge and is used in Anti-Submarine Warfare (ASW) for attacking submerged submarines. The United States Navy, Soviet Navy, and Royal Navy had nuclear depth bombs in their arsenals at one point.
Nuclear DNA Nuclear DNA , nuclear deoxyribonucleic acid (nDNA), is DNA contained within a nucleus of eukaryotic organisms. In most cases it encodes more of the genome than the mitochondrial DNA and is passed sexually rather than matrilineally.
Nuclear electric rocket In a nuclear electric rocket, nuclear thermal energy is changed into electrical energy that is used to power one of the electrical propulsion technologies. So technically the powerplant is nuclear, not the propulsion system, but the terminology is standard.
Nuclear energy Nuclear energy is energy released from the atomic nucleus. It follows the conversion of its mass to energy consistent with Albert Einstein's formula E=mc² in which E = Energy, m = Mass, and c = The speed of light (a physical constant).

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