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Puy De Dôme
Puy de Dôme (, ) is a lava dome and one of the youngest volcanoes in the region of Massif Central in central France. This chain of volcanoes including numerous cinder cones, lava domes and maars is far from the edge of any tectonic plate. Puy de Dôme was created by a Peléan eruption, some 10,700 years ago. It is approximately from Clermont-Ferrand. The Puy-de-Dôme is named after the volcano. History In pre-Christian Europe, Puy de Dôme was an assembly place for spiritual ceremonies. Temples were built at the summit, including a Gallo-Roman temple of Mercury, the ruins of which were discovered in 1872. In 1648, , at the urging of his brother-in-law Blaise Pascal, confirmed Evangelista Torricelli's theory that barometric observations were caused by the weight of air by measuring the height of a column of mercury at three elevations on Puy de Dôme. In 1875, a physics laboratory was built at the summit. Since 1956, a TDF () antenna is also located there. On th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lonely Planet
Lonely Planet is a travel guide book publisher. Founded in Australia in 1973, the company has printed over 150 million books. History 20th century Lonely Planet was founded by married couple Maureen Wheeler, Maureen and Tony Wheeler. In 1972, they embarked on an overland trip through Europe and Asia to Australia following the route of the Oxford and Cambridge Far Eastern Expedition. The company name originates from the Mondegreen, misheard "lovely planet" in a song written by Matthew Moore. Lonely Planet's first book, ''Across Asia on the Cheap'', had 94 pages; it was written by the couple in their home. The original 1973 print run consisted of stapled booklets with pale blue cardboard covers. Wheeler returned to Asia to write ''Across Asia on the Cheap: A Complete Guide to Making the Overland Trip'', published in 1975. The Lonely Planet guide book series initially expanded to cover other countries in Asia, with the India guide book in 1981, and expanded to the rest of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Europe
Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east. Europe shares the landmass of Eurasia with Asia, and of Afro-Eurasia with both Africa and Asia. Europe is commonly considered to be Boundaries between the continents#Asia and Europe, separated from Asia by the Drainage divide, watershed of the Ural Mountains, the Ural (river), Ural River, the Caspian Sea, the Greater Caucasus, the Black Sea, and the waterway of the Bosporus, Bosporus Strait. "Europe" (pp. 68–69); "Asia" (pp. 90–91): "A commonly accepted division between Asia and Europe ... is formed by the Ural Mountains, Ural River, Caspian Sea, Caucasus Mountains, and the Black Sea with its outlets, the Bosporus and Dardanelles." Europe covers approx. , or 2% of Earth#Surface, Earth's surface (6.8% of Earth's land area), making it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roman Road
Roman roads ( ; singular: ; meaning "Roman way") were physical infrastructure vital to the maintenance and development of the Roman state, built from about 300 BC through the expansion and consolidation of the Roman Republic and the Roman Empire. They provided efficient means for the overland movement of armies, officials, civilians, inland carriage of official communications, and trade goods. Roman roads were of several kinds, ranging from small local roads to broad, long-distance highways built to connect cities, major towns and military bases. These major roads were often stone-paved and metaled, cambered for drainage, and were flanked by footpaths, bridleways and drainage ditches. They were laid along accurately surveyed courses, and some were cut through hills or conducted over rivers and ravines on bridgework. Sections could be supported over marshy ground on rafted or piled foundations.Corbishley, Mike: "The Roman World", page 50. Warwick Press, 1986. At the peak of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trail
A trail, also known as a path or track, is an unpaved lane or a small paved road (though it can also be a route along a navigable waterways) generally not intended for usage by motorized vehicles, usually passing through a natural area. However, it is sometimes applied to highways in North America. In the United Kingdom and Ireland, a path or footpath is the preferred term for a pedestrian or hiking trail. In the US, the term was historically used for a route into or through wild territory used by explorers and migrants (e.g. the Oregon Trail). In the United States, "trace" is a synonym for trail, as in Natchez Trace. Some trails are restricted to use by only walkers, or cyclists, or equestrians, or for snowshoeing, or cross-country skiing, others, for example bridleways in the UK, are shared, and can be used by walkers, cyclists and equestrians. Although most ban motorized use, there are unpaved trails used by dirt bikes, quad bikes and other off-road vehicles, u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paragliding
Paragliding is the recreational and competitive adventure sport of flying paragliders: lightweight, free-flying, foot-launched glider aircraft with no rigid primary structure. The pilot sits in a harness or in a cocoon-like 'pod' suspended below a fabric wing. Wing shape is maintained by the suspension lines, the pressure of air entering vents in the front of the wing, and the aerodynamic forces of the air flowing over the outside. Despite not using an engine, paraglider flights can last many hours and cover many hundreds of kilometres, though flights of one to five hours and covering some tens of kilometres are more the norm. By skillful exploitation of sources of lift, the pilot may gain height, often climbing to altitudes of a few thousand metres. History In 1966, Canadian Domina Jalbert was granted a patent for a ''multi-cell wing type aerial device—''"a wing having a flexible canopy constituting an upper skin and with a plurality of longitudinally extending ribs form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Auvergne (région)
Auvergne (; ; or ) is a cultural region in central France. As of 2016 Auvergne is no longer an administrative division of France. It is generally regarded as conterminous with the land area of the historical Province of Auvergne, which was dissolved in 1790, and with the now-defunct Auvergne (administrative region), administrative region of Auvergne, which existed from 1956 to 2015. The region is home to a chain of volcanoes known collectively as the "chaîne des Puys". The volcanoes began forming about 70,000 years ago, and most have eroded, leaving plugs of hardened magma that form rounded hilltops known as puys. The last confirmed eruption occurred around 5th millennium BC, 4040 BCE. Geography Auvergne is known for its mountain ranges and dormant volcanoes. Together the Monts Dore and the Chaîne des Puys include 80 volcanoes. The Puy de Dôme is the highest volcano in the region, with an altitude of . The Sancy Massif in the Monts Dore is the highest point in Auver ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UNESCO World Heritage
World Heritage Sites are landmarks and areas with legal protection under an international treaty A treaty is a formal, legally binding written agreement between sovereign states and/or international organizations that is governed by international law. A treaty may also be known as an international agreement, protocol, covenant, conventio ... administered by UNESCO for having cultural, historical, or scientific significance. The sites are judged to contain "cultural and natural heritage around the world considered to be of outstanding value to humanity". To be selected, a World Heritage Site is nominated by its host country and determined by the UNESCO's World Heritage Committee to be a unique landmark which is geographically and historically identifiable, having a special cultural or physical significance, and to be under a sufficient system of legal protection. World Heritage Sites might be ancient ruins or historical structures, buildings, cities, deserts, forests, isl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puy De Dome, Mercury Temple
Puy () is a geological term used locally in the Auvergne, France for a volcanic hill. The word derives from the Provençal ''puech'', meaning an isolated hill, coming from Latin ''podium'', which has given also ''puig'' in Catalan, ''poggio'' in Italian, ''poio'' in Galician and Portuguese. Most of the puys of central France are small cinder cones, with or without associated lava, whilst others are domes of trachytic rock, like the of the Puy-de-Dôme. The puys may be scattered as isolated hills, or, as is more usual, clustered together, sometimes in lines. The chain of puys in central France probably became extinct in late prehistoric time. Other volcanic hills more or less like those of Auvergne are also known to geologists as puys; examples may be found in the Eifel and in the small cones on the Bay of Naples, whilst the relics of puys denuded by erosion are numerous in the Swabian Alps of Württemberg, as pointed out by W. Branco. Sir A. Geikie has shown that the puy t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Télédiffusion De France
TDF (which stands for ''Télédiffusion de France'' officially renamed ''TDF'' in 2004) is a French company which provides radio and television transmission services, services for telecommunications operators, and other multimedia services – digitization of content, encoding, storage, etc. Its headquarters are located in Paris. It is the dominant partner in the HDRR WiMAX consortium and is also part of Digital Radio Mondiale. Arkena Arkena was European company that regroups four entities: Cognacq-Jay Image (France), PSN (Poland), Qbrick (Sweden) and SmartJog (France). These entities were all part of the Media Services division of the TDF Group. http://www.broadbandtvnews.com/2014/01/20/arkena-joins-together-all-tdf-media-subsidiaries/ - Broadband TV News, 20 January 2014 Arkena provides ful ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercury (element)
Mercury is a chemical element; it has Symbol (chemistry), symbol Hg and atomic number 80. It is commonly known as quicksilver. A Heavy metal element, heavy, silvery d-block element, mercury is the only metallic element that is known to be liquid at standard temperature and pressure; the only other element that is liquid under these conditions is the halogen bromine, though metals such as caesium, gallium, and rubidium melt just above room temperature. Mercury occurs in deposits throughout the world mostly as cinnabar (mercuric sulfide). The red pigment vermilion is obtained by Mill (grinding), grinding natural cinnabar or synthetic mercuric sulfide. Exposure to mercury and mercury-containing organic compounds is toxic to the nervous system, immune system and kidneys of humans and other animals; mercury poisoning can result from exposure to water-soluble forms of mercury (such as mercuric chloride or methylmercury) either directly or through mechanisms of biomagnification. Mercu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barometer
A barometer is a scientific instrument that is used to measure air pressure in a certain environment. Pressure tendency can forecast short term changes in the weather. Many measurements of air pressure are used within surface weather analysis to help find surface Trough (meteorology), troughs, pressure systems and weather front, frontal boundaries. Barometers and pressure altimeters (the most basic and common type of altimeter) are essentially the same instrument, but used for different purposes. An altimeter is intended to be used at different levels matching the corresponding atmospheric pressure to the altitude, while a barometer is kept at the same level and measures subtle pressure changes caused by weather and elements of weather. The average atmospheric pressure on the Earth's surface varies between 940 and 1040 hPa (mbar). The average atmospheric pressure at sea level is 1013 hPa (mbar). Etymology The word ''wikt:barometer, barometer'' is derived from the Ancient Gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evangelista Torricelli
Evangelista Torricelli ( ; ; 15 October 160825 October 1647) was an Italian people, Italian physicist and mathematician, and a student of Benedetto Castelli. He is best known for his invention of the barometer, but is also known for his advances in optics and work on the method of indivisibles. The torr is named after him. Biography Early life Torricelli was born on 15 October 1608 in Rome, the firstborn child of Gaspare Ruberti and Giacoma Torricelli. His family was from Faenza in the Province of Ravenna, then part of the Papal States. His father was a textile worker and the family was very poor. Seeing his talents, his parents sent him to be educated in Faenza, under the care of his uncle, Giacomo (James), a Camaldolese monk, who first ensured that his nephew was given a sound basic education. He then entered young Torricelli into a Jesuit College in 1624, possibly the one in Faenza itself, to study mathematics and philosophy until 1626, by which time his father, Gaspare, had di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
