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Fréjus Road Tunnel
The Fréjus Road Tunnel is a tunnel that connects France and Italy. It runs under Col du Fréjus in the Cottian Alps between Modane in France and Bardonecchia in Italy. It is one of the major trans-Alpine transport routes between France and Italy being used for 80% of the commercial road traffic. Construction of the long tunnel started in 1974, and it came into service on 12 July 1980, leading to the closure of the motorail shuttle service in the Fréjus rail tunnel. It cost 2 billion francs (equivalent to €700 million at 2005 prices). It is the thirteenth longest road tunnel in the world. The French section is managed by the French company SFTRF, and the Italian section by the Italian company SITAF. (The French politician Pierre Dumas was chairman of SFTRF from 1962 to 1989). The tunnel can be reached from the Italian side by the A32 Torino-Bardonecchia motorway, or by SS335 from Oulx, which joins SS24 (“del Monginevro”), and reaches Bardonecchia after . From the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Modane
Modane (; ) is a Communes of France, commune in the Savoie Departments of France, department in the Auvergne-Rhône-Alpes Regions of France, region in southeastern France. The commune is in the Maurienne Valley, and it also belongs to the Vanoise National Park. It was part of the Kingdom of Sardinia until the Treaty of Turin (1860), Treaty of Turin in 1860. Geography Location The commune of Modane is located in the Alps in the department of Savoie between the Vanoise massif to the north and between the and the Massif des Cerces to the south. Crossed by the Arc (Savoie), Arc river, it extends to the doors of the Haute-Maurienne. The issue of the attachment or not of Modane in the Maurienne Valley or Haute-Maurienne differs depending on the disciplines of economics, geography or geology. For economists, Modane is attached to Haute Maurienne, arguing that the city has a very strong influence on the villages of Haute Maurienne, through economic and administrative infrastructure s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oulx
Oulx ( oc, label=Occitan, Ors) is a ''comune'' (municipality) in the Metropolitan City of Turin in the Italian region Piedmont, located about west of Turin, in the Susa Valley on the border with France. Names Like many other towns in the Susa Valley, Oulx has different names reflecting the area's multiple linguistic traditions. One theory of the name's origin is that it derives from Ulkos, the name of a leader of the Celtic Salassi tribe.Note di toponomastica: Periodo Pre-Romano. Accessed 25 September 2008. Another theory holds that the derivation is from Ultor, a title of the god , to whom a temple in the area was dedicated. These names were first rendered as ''Ulces'', and l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Road Tunnels In France
A road is a linear way for the conveyance of traffic that mostly has an improved surface for use by vehicles (motorized and non-motorized) and pedestrians. Unlike streets, the main function of roads is transportation. There are many types of roads, including parkways, avenues, controlled-access highways (freeways, motorways, and expressways), tollways, interstates, highways, thoroughfares, and local roads. The primary features of roads include lanes, sidewalks (pavement), roadways (carriageways), medians, shoulders, verges, bike paths (cycle paths), and shared-use paths. Definitions Historically many roads were simply recognizable routes without any formal construction or some maintenance. The Organization for Economic Co-operation and Development (OECD) defines a road as "a line of communication (travelled way) using a stabilized base other than rails or air strips open to public traffic, primarily for the use of road motor vehicles running on their own wheels", which i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunnels In The Alps
A tunnel is an underground passageway, dug through surrounding soil, earth or rock, and enclosed except for the entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods. A tunnel may be for foot or vehicular road traffic, for rail traffic, or for a canal. The central portions of a rapid transit network are usually in the tunnel. Some tunnels are used as sewers or aqueducts to supply water for consumption or for hydroelectric stations. Utility tunnels are used for routing steam, chilled water, electrical power or telecommunication cables, as well as connecting buildings for convenient passage of people and equipment. Secret tunnels are built for military purposes, or by civilians for smuggling of weapons, contraband, or people. Special tunnels, such as wildlife crossings, are built to allow wildlife to cross human-made barriers safely. Tunn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lyon Turin Ferroviaire
Lyon Turin Ferroviaire (LTF), a subsidiary of Réseau Ferré de France (RFF) and Rete Ferroviaria Italiana (RFI), was the early developer of the joint French-Italian part of the future rail link between Lyon and Turin. It has now been replaced in that role by Tunnel Euralpin Lyon Turin (TELT), with the same staff and leadership. The critical part of this planned line is the Mont d'Ambin Base Tunnel between Saint-Jean-de-Maurienne in France and the Susa Valley in Italy. In November 2007, the European Commission granted €671.8 million (up to 30% of its total value) to the transborder section of the Lyon-Turin link through its multiannual TEN-T program (2007-2013). This contribution of the EU lies within the global financing of €2.1 billion in favor of the transborder section of the Lyon-Turin for 2007-2013 period. Italy and France bring the major part of these financing. See also *NRLA *Brenner Base Tunnel * TAV *TGV *Turin–Lyon high-speed railway The Turin–Ly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Majorana Particle
A Majorana fermion (, uploaded 19 April 2013, retrieved 5 October 2014; and also based on the pronunciation of physicist's name.), also referred to as a Majorana particle, is a fermion that is its own antiparticle. They were hypothesised by Ettore Majorana in 1937. The term is sometimes used in opposition to a Dirac fermion, which describes fermions that are not their own antiparticles. With the exception of neutrinos, all of the Standard Model fermions are known to behave as Dirac fermions at low energy (lower than the electroweak symmetry breaking temperature), and none are Majorana fermions. The nature of the neutrinos is not settled – they may turn out to be either Dirac or Majorana fermions. In condensed matter physics, quasiparticle excitations can appear like bound Majorana fermions. However, instead of a single fundamental particle, they are the collective movement of several individual particles (themselves composite) which are governed by non-Abelian statistics. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neutrino
A neutrino ( ; denoted by the Greek letter ) is a fermion (an elementary particle with spin of ) that interacts only via the weak interaction and gravity. The neutrino is so named because it is electrically neutral and because its rest mass is so small ('' -ino'') that it was long thought to be zero. The rest mass of the neutrino is much smaller than that of the other known elementary particles excluding massless particles. The weak force has a very short range, the gravitational interaction is extremely weak due to the very small mass of the neutrino, and neutrinos do not participate in the strong interaction. Thus, neutrinos typically pass through normal matter unimpeded and undetected. Weak interactions create neutrinos in one of three leptonic flavors: electron neutrinos muon neutrinos (), or tau neutrinos (), in association with the corresponding charged lepton. Although neutrinos were long believed to be massless, it is now known that there are three discrete ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neutrinoless Double Beta Decay
The neutrinoless double beta decay (0νββ) is a commonly proposed and experimentally pursued theoretical radioactive decay process that would prove a Majorana nature of the neutrino particle. To this day, it has not been found. The discovery of the neutrinoless double beta decay could shed light on the absolute neutrino masses and on their mass hierarchy (Neutrino mass). It would mean the first ever signal of the violation of total lepton number conservation. A Majorana nature of neutrinos would confirm that the neutrino is its own antiparticle. To search for neutrinoless double beta decay, there are currently a number of experiments underway, with several future experiments for increased sensitivity proposed as well. Historical development of the theoretical discussion Back in 1939, Wendell H. Furry proposed the idea of the Majorana nature of the neutrino, which was associated with beta decays. Furry stated the transition probability to even be higher for the neutrino''les ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neutrino Ettore Majorana Observatory
The Neutrino Ettore Majorana Observatory (NEMO experiment) is an international collaboration of scientists searching for neutrinoless double beta decay (0νββ). The collaboration has been active since 1989. Observation of 0νββ would indicate neutrinos are Majorana particles and could be used to measure the neutrino mass. It is located in the Modane Underground Laboratory (LSM) in the Fréjus Road Tunnel. The experiment has (as of 2018) had 3 detectors, NEMO-1, NEMO-2, NEMO-3 (and a demonstrator module of SuperNEMO-detector) and is planning (as of 2018) to construct a new detector SuperNEMO. The NEMO-1 and NEMO-2 prototype detectors were used until 1997. Latest experiment NEMO-3 was under design and construction from 1994 onwards, took data from January 2003 to January 2011 and the final data analysis was published in 2018.http://www.rcnp.osaka-u.ac.jp/dbd18/Data/Prog/S0303_Patrick.pdf The NEMO-2 and NEMO-3 detectors produced measurements for double neutrino decays and lim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second Tube Tunnel Du Fréjus à Modane (novembre 2021)
The second (symbol: s) is the unit of time in the International System of Units (SI), historically defined as of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each (24 × 60 × 60 = 86400). The current and formal definition in the International System of Units ( SI) is more precise:The second ..is defined by taking the fixed numerical value of the caesium frequency, Δ''ν''Cs, the unperturbed ground-state hyperfine transition frequency of the caesium 133 atom, to be when expressed in the unit Hz, which is equal to s−1. This current definition was adopted in 1967 when it became feasible to define the second based on fundamental properties of nature with caesium clocks. Because the speed of Earth's rotation varies and is slowing ever so slightly, a leap second is added at irregular intervals to civil time to keep clocks in sync with Earth's rotation. Uses Analog clocks and watches often ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slovak People
The Slovaks ( sk, Slováci, singular: ''Slovák'', feminine: ''Slovenka'', plural: ''Slovenky'') are a West Slavic ethnic group and nation native to Slovakia who share a common ancestry, culture, history and speak Slovak. In Slovakia, 4.4 million are ethnic Slovaks of 5.4 million total population. There are Slovak minorities in many neighboring countries including Austria, Croatia, Czech Republic, Hungary, Poland, Romania, Serbia and Ukraine and sizeable populations of immigrants and their descendants in Australia, Canada, France, Germany, United Kingdom and the United States among others, which are collectively referred to as the Slovak diaspora. Name The name ''Slovak'' is derived from ''*Slověninъ'', plural ''*Slověně'', the old name of the Slavs (Proglas, around 863). The original stem has been preserved in all Slovak words except the masculine noun; the feminine noun is ''Slovenka'', the adjective is ''slovenský'', the language is ''slovenčina'' and the country ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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