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Fires In Sweden
Fire is the rapid oxidation of a fuel in the exothermic chemical process of combustion, releasing heat, light, and various reaction products. Flames, the most visible portion of the fire, are produced in the combustion reaction when the fuel reaches its ignition point temperature. Flames from hydrocarbon fuels consist primarily of carbon dioxide, water vapor, oxygen, and nitrogen. If hot enough, the gases may become ionized to produce plasma. The color and intensity of the flame depend on the type of fuel and composition of the surrounding gases. Fire, in its most common form, has the potential to result in conflagration, which can lead to permanent physical damage. It directly impacts land-based ecological systems worldwide. The positive effects of fire include stimulating plant growth and maintaining ecological balance. Its negative effects include hazards to life and property, atmospheric pollution, and water contamination. When fire removes protective vegetation, heavy r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bonfire
A bonfire is a large and controlled outdoor fire, used for waste disposal or as part of a religious feast, such as Saint John's Eve. Etymology The earliest attestations date to the late 15th century, with the Catholicon Anglicum spelling it as ''banefyre'' and John Mirk's ''Book of Festivals'' speaking of a communal fire in celebrations of Saint John's Eve that "was clene bones & no wode & that is callid a bone fyre". The word is thus a compound of "bone" and "fire." Samuel Johnson's 1755 ''Dictionary of the English Language, Dictionary'' incorrectly analyzed "bon" as the French ''bon'' 'good'. Regional traditions In many regions of continental Europe, bonfires are made traditionally on 24 June, the solemnity of John the Baptist, as well as on Saturday night before Easter. Bonfires are also a feature of Walpurgis Night in central and northern Europe, and Bonfires of Saint John, the celebrations on the eve of St. John's Day in Spain. In Sweden bonfires are lit on Walpurgis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conflagration
A conflagration is a large fire in the built environment that spreads via structure to structure ignition due to radiant or convective heat, or ember transmission. Conflagrations often damage human life, animal life, health, and/or property. A conflagration can begin Fire prevention, accidentally or be intentionally created (arson). A very large fire can produce a firestorm, in which the central column of rising heated air induces strong inward winds, which supply oxygen to the fire. Conflagrations can cause Casualty (person), casualties including deaths or injuries from burns, collapse of structures and attempts to escape, and smoke inhalation. Firefighting is the practice of extinguishing a conflagration, protecting life and property and minimizing damage and injury. One of the goals of fire prevention is to avoid conflagrations. When a conflagration is extinguished, there is often a fire investigation to determine the cause of the fire. Causes and types During a conflagrati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smelting
Smelting is a process of applying heat and a chemical reducing agent to an ore to extract a desired base metal product. It is a form of extractive metallurgy that is used to obtain many metals such as iron-making, iron, copper extraction, copper, silver mining#Ore processing, silver, tin, lead smelting, lead and zinc smelting, zinc. Smelting uses heat and a chemical reducing agent to decompose the ore, driving off other elements as gases or slag and leaving the metal behind. The reducing agent is commonly a fossil-fuel source of carbon, such as carbon monoxide from incomplete combustion of coke (fuel), coke—or, in earlier times, of charcoal. The oxygen in the ore binds to carbon at high temperatures, as the Chemical energy, chemical potential energy of the bonds in carbon dioxide () is lower than that of the bonds in the ore. Sulfide ores such as those commonly used to obtain copper, zinc or lead, are roasting (metallurgy), roasted before smelting in order to convert the sulfid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fire Worship
Worship or deification of fire (also pyrodulia, pyrolatry or pyrolatria), or fire rituals, religious rituals centred on a fire, are known from various religions. Fire has been an important part of homo, human culture since the Lower Paleolithic. Religious or animist notions connected to fire are assumed to reach back to such early australopithecine, prehuman times. There may be a fire god, as a personification of fires in general, and he may be believed to reside in some sense in any particular ritual fire, or the fire may represent worship of another deity. Indo-European religions In Indo-European languages, there were two concepts regarding fire: that of an animate type called (cf. Sanskrit ''agni'', , English ''ignite'' from Latin ''ignis'', Polish ''ogień'' and Russian ''ogon''), and an inanimate type *''péh₂wr̥'' (cf. English ''fire'', Greek ''pyr'', Sanskrit ''pu''). A similar distinction existed for water. Fire rituals that are commonly found among Indo-European peo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fire (classical Element)
Fire is one of the four classical elements along with earth, water and air in ancient Greek philosophy and science. Fire is considered to be both hot and dry and, according to Plato, is associated with the tetrahedron. Greek and Roman tradition Fire is one of the four classical elements in ancient Greek philosophy and science. It was commonly associated with the qualities of energy, assertiveness, and passion. In one Greek myth, Prometheus stole ''fire'' from the gods to protect the otherwise helpless humans, but was punished for this charity. Fire was one of many '' archai'' proposed by the pre-Socratics, most of whom sought to reduce the cosmos, or its creation, to a single substance. Heraclitus considered ''fire'' to be the most fundamental of all elements. He believed fire gave rise to the other three elements: "All things are an interchange for fire, and fire for all things, just like goods for gold and gold for goods." Diels-Kranz B90 (Freeman 9481970p. 45. He had ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
