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Prehistory Of Brittany
This page concerns the prehistory of Brittany. Palaeolithic Brittany was never glaciated during the Quaternary, owing to its latitude, proximity to the coast and absence of significant mountain ranges. However, even though free of glaciers, Palaeolithic Brittany was extremely cold compared to its present climate, with annual mean temperatures at the last glacial maximum estimated at -3 °C (27 °F). Permafrost was present with only a very shallow active layer estimated at only 1 foot (30 cm) thawing each summer, so that only a very light (less than 5 percent) cover of tundra could grow. This vegetation could only support very low densities of grazing mammals like reindeer, which (in Europe) are found today only in areas then uninhabitable due to the presence of thick ice sheets. Consequently, few if any people could survive in Brittany prior to the end of the last glaciation, and only a few Palaeolithic sites are known from Brittany, like the rock shelter of Perro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carnac Kermario 07
Carnac (; br, italic=no, Karnag, ) is a commune beside the Gulf of Morbihan on the south coast of Brittany in the Morbihan department in north-western France. Its inhabitants are called ''Carnacois'' in French. Carnac is renowned for the Carnac stones – one of the most extensive Neolithic menhir collections in the world – as well as its beaches, which are popular with tourists. Located on a narrow peninsula halfway between the medieval town Vannes and the seaside resort Quiberon, Carnac is split into two centres: ''Carnac-Ville'' and ''Carnac-Plage'' (the beachfront). In total there are five beaches, including ''la Grande Plage'', and further to the east, ''Plage Men Dû'' and ''Beaumer''. Map Standing stones Carnac is famous as the site of more than 10,000 Neolithic standing stones, also known as menhirs. The stones were hewn from local rock and erected by the pre-Celtic people of Brittany. Local tradition claims that the reason they stand in such perfectly st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beg An Dorchenn
{{disambiguation ...
BEG may refer to: Transportation * BEG, IATA code for Belgrade Nikola Tesla Airport in Serbia * ''Bayerische Eisenbahngesellschaft'', the state rail transport authority for Bavaria Other uses * Bengal Engineer Group or Bombay Engineer Group, regiments of the Corps of Engineers of the Indian Army * Brown Eyed Girls, a South Korean girl group See also *Beg (other) BEG may refer to: Transportation * BEG, IATA code for Belgrade Nikola Tesla Airport in Serbia * ''Bayerische Eisenbahngesellschaft'', the state rail transport authority for Bavaria Other uses * Bengal Engineer Group or Bombay Engineer Group, reg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accelerator (chemistry)
Accelerants are substances that can bond, mix or disturb another substance and cause an increase in the speed of a natural, or artificial chemical process. Accelerants play a major role in chemistry—most chemical reactions can be hastened with an accelerant. Accelerants alter a chemical bond, speed up a chemical process, or bring organisms back to homeostasis. Accelerants are not necessarily catalysts as they may be consumed by the process. Fire In fire protection, the term accelerant is used very broadly to include any substance or mixture that "accelerates" the development of fire to commit arson. Chemists would distinguish an accelerant from a fuel; the terms are not, in the truest sense of chemical science, interchangeable. Some fire investigators use the term "accelerant" to mean any substance that initiates and promotes a fire without differentiating between an accelerant and a fuel. To a chemical engineer, "gasoline" is not at all considered an "accelerant"; it is more a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiocarbon Dating
Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon. The method was developed in the late 1940s at the University of Chicago by Willard Libby. It is based on the fact that radiocarbon () is constantly being created in the Earth's atmosphere by the interaction of cosmic rays with atmospheric nitrogen. The resulting combines with atmospheric oxygen to form radioactive carbon dioxide, which is incorporated into plants by photosynthesis; animals then acquire by eating the plants. When the animal or plant dies, it stops exchanging carbon with its environment, and thereafter the amount of it contains begins to decrease as the undergoes radioactive decay. Measuring the amount of in a sample from a dead plant or animal, such as a piece of wood or a fragment of bone, provides information that can be used to calc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cist
A cist ( or ; also kist ; from grc-gre, κίστη, Middle Welsh ''Kist'' or Germanic ''Kiste'') is a small stone-built coffin-like box or ossuary used to hold the bodies of the dead. Examples can be found across Europe and in the Middle East. A cist may have been associated with other monuments, perhaps under a cairn or long barrow. Several cists are sometimes found close together within the same cairn or barrow. Often ornaments have been found within an excavated cist, indicating the wealth or prominence of the interred individual. This old word is preserved in the Nordic languages as "" in Swedish and "" in Danish and Norwegian, where it is the word for a funerary coffin. In English it is related to "cistern".''cistern'' Regional examples ;Sri Lanka * Bellanbedipalassa * Pothana * Ibbankatuwa Megalithic Stones * Udaranchamadama ;England * Bellever Forest, Dartmoor * Hepburn woods, Northumberland ;Estonia * Jõelähtme (Rebala) stone-cist graves, Harju County ;Gu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hunter-gatherers
A traditional hunter-gatherer or forager is a human living an ancestrally derived lifestyle in which most or all food is obtained by foraging, that is, by gathering food from local sources, especially edible wild plants but also insects, fungi, honey, or anything safe to eat, and/or by hunting game (pursuing and/or trapping and killing wild animals, including catching fish), roughly as most animal omnivores do. Hunter-gatherer societies stand in contrast to the more sedentary agricultural societies, which rely mainly on cultivating crops and raising domesticated animals for food production, although the boundaries between the two ways of living are not completely distinct. Hunting and gathering was humanity's original and most enduring successful competitive adaptation in the natural world, occupying at least 90 percent of human history. Following the invention of agriculture, hunter-gatherers who did not change were displaced or conquered by farming or pastoralist groups ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ochre
Ochre ( ; , ), or ocher in American English, is a natural clay earth pigment, a mixture of ferric oxide and varying amounts of clay and sand. It ranges in colour from yellow to deep orange or brown. It is also the name of the colours produced by this pigment, especially a light brownish-yellow. A variant of ochre containing a large amount of hematite, or dehydrated iron oxide, has a reddish tint known as "red ochre" (or, in some dialects, ruddle). The word ochre also describes clays coloured with iron oxide derived during the extraction of tin and copper. Earth pigments Ochre is a family of earth pigments, which includes yellow ochre, red ochre, purple ochre, sienna, and umber. The major ingredient of all the ochres is iron(III) oxide-hydroxide, known as limonite, which gives them a yellow colour. * Yellow ochre, , is a hydrated iron hydroxide (limonite) also called gold ochre. * Red ochre, , takes its reddish colour from the mineral hematite, which is an anhydrous iron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flint Tools
A stone tool is, in the most general sense, any tool made either partially or entirely out of stone. Although stone tool-dependent societies and cultures still exist today, most stone tools are associated with prehistoric (particularly Stone Age) cultures that have become extinct. Archaeologists often study such prehistoric societies, and refer to the study of stone tools as lithic analysis. Ethnoarchaeology has been a valuable research field in order to further the understanding and cultural implications of stone tool use and manufacture. Stone has been used to make a wide variety of different tools throughout history, including arrowheads, spearheads, hand axes, and querns. Stone tools may be made of either ground stone or knapped stone, the latter fashioned by a flintknapper. Knapped stone tools are made from cryptocrystalline materials such as chert or flint, radiolarite, chalcedony, obsidian, basalt, and quartzite via a process known as lithic reduction. One simple form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antler
Antlers are extensions of an animal's skull found in members of the Cervidae (deer) family. Antlers are a single structure composed of bone, cartilage, fibrous tissue, skin, nerves, and blood vessels. They are generally found only on males, with the exception of reindeer/caribou. Antlers are shed and regrown each year and function primarily as objects of sexual attraction and as weapons. In contrast to antlers, horns—found on pronghorns and bovids, such as sheep, goats, bison and cattle—are two-part structures that usually do not shed. A horn's interior of bone is covered by an exterior sheath made of keratin (the same material as human fingernails and toenails). Etymology Antler comes from the Old French ''antoillier '' (see present French : "Andouiller", from'' ant-, ''meaning before,'' oeil, ''meaning eye and'' -ier'', a suffix indicating an action or state of being) possibly from some form of an unattested Latin word ''*anteocularis'', "before the eye" (and appl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hearth
A hearth () is the place in a home where a fire is or was traditionally kept for home heating and for cooking, usually constituted by at least a horizontal hearthstone and often enclosed to varying degrees by any combination of reredos (a low, partial wall behind a hearth), fireplace, oven, smoke hood, or chimney. Hearths are usually composed of masonry such as brick or stone. For centuries, the hearth was such an integral part of a home, usually its central and most important feature, that the concept has been generalized to refer to a homeplace or household, as in the terms "hearth and home" and "keep the home fires burning". In the modern era, since the advent of central heating, hearths are usually less central to most people's daily life because the heating of the home is instead done by a furnace or a heating stove, and cooking is instead done with a kitchen stove/range (combination cooktop and oven) alongside other home appliances; thus many homes built in the 20t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cenotaph
A cenotaph is an empty tomb or a monument erected in honour of a person or group of people whose remains are elsewhere. It can also be the initial tomb for a person who has since been reinterred elsewhere. Although the vast majority of cenotaphs honour individuals, many noted cenotaphs are instead dedicated to the memories of groups of individuals, such as the lost soldiers of a country or of an empire. Etymology The word "cenotaph" in the English Language is derived from the Greek el, κενοτάφιον, kenotaphion, label=none. It is a compound word that is created from the morphological combination of two root words: # el, κενός, kenos, label=none meaning "empty" # el, τάφος, taphos, label=none meaning "tomb", from el, θαπτω, thapto, I bury, label=none History Cenotaphs were common in the ancient world. Many were built in Ancient Egypt, Ancient Greece and across Northern Europe (in the shape of Neolithic barrows). The cenotaph in Whitehall, Lon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
