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Charcloth
Char cloth, also called char paper, is a material with low ignition temperature, used as tinder when lighting a fire. It is the main component in a tinderbox. It is a small swatch of fabric made from a natural fibre (such as linen, cotton, jute etc.) that has been converted through pyrolysis. Description Char cloth looks like a black, fragile piece of cloth. It is usually made from swatches of organic fabrics, but similar tinder can be made in the same way using cotton balls or tampons, dried moss, leaves or fungus (amadou for instance), raw unspun flax, etc. This is packed into a small, almost airtight, rectangular tin, then heated slowly and steadily over coals for a long period of time, allowing it to undergo thermal decomposition (aka, pyrolysis). The material that remains after this process is complete ignites very easily, making it the preferred tinder when lighting a fire using flint and steel. Pyrolysis is defined as "a thermochemical decomposition of organic material ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tinder Box
A tinderbox, or patch box, is a container made of wood or metal containing flint, firesteel, and tinder (typically charcloth, but possibly a small quantity of dry, finely divided fibrous matter such as hemp), used together to help kindle a fire. A tinderbox might also contain sulfur-tipped matches. Tinderboxes fell out of general usage when friction matches were invented. History and use Throughout prehistoric Europe flint and iron pyrites (commonly known as fool's gold) were struck against one another in order to create a spark for firelighting. As an example, Ötzi (the natural mummy of a man who lived some time between 3350 and 3105 BC, discovered in September 1991) was found with tinder fungus along with flint and pyrite for creating sparks. With the development of iron ore smelting in the Iron Age, the firesteel eventually replaced pyrites. This was simply a piece of carbon steel (it is difficult to obtain sparks with ordinary iron), which was usually wrought into a 'D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Firelighting Materials
Fire making, fire lighting or fire craft is the process of artificially starting a fire. It requires completing the fire triangle, usually by heating tinder above its autoignition temperature. Fire is an essential tool for human survival and the use of fire was important in early human cultural history since the Lower Paleolithic. Today, it is a key component of Scouting and bushcraft. Archaeology Evidence for fire making dates to at least the early Middle Paleolithic, with dozens of Neanderthal hand axes from France exhibiting use-wear traces suggesting these tools were struck with the mineral pyrite to produce sparks around 50,000 years ago. At the Neolithic site of La Draga, researchers have found that fungi were used as tinder. Hearths are one of the most common features found at archaeological sites. Ötzi, also called the Iceman, a well-preserved natural mummy of a man who lived between 3400 and 3100 BCE, found in September 1991 in the Ötztal Alps, hence the n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tinderbox
A tinderbox, or patch box, is a container made of wood or metal containing flint, firesteel, and tinder (typically charcloth, but possibly a small quantity of dry, finely divided fibrous matter such as hemp), used together to help kindle a fire. A tinderbox might also contain sulfur-tipped matches. Tinderboxes fell out of general usage when friction matches were invented. History and use Throughout prehistoric Europe flint and iron pyrites (commonly known as fool's gold) were struck against one another in order to create a spark for firelighting. As an example, Ötzi (the natural mummy of a man who lived some time between 3350 and 3105 BC, discovered in September 1991) was found with tinder fungus along with flint and pyrite for creating sparks. With the development of iron ore smelting in the Iron Age, the firesteel eventually replaced pyrites. This was simply a piece of carbon steel (it is difficult to obtain sparks with ordinary iron), which was usually wrought into a 'D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autoignition Temperature
The autoignition temperature or kindling point of a substance is the lowest temperature in which it spontaneously ignites in a normal atmosphere without an external source of ignition, such as a flame or spark. This temperature is required to supply the activation energy needed for combustion. The temperature at which a chemical ignites decreases as the pressure is increased. *The ignition temperature of a substance is the lowest temperature at which the substance starts combustion. *Substances which spontaneously ignite in a normal atmosphere at naturally ambient temperatures are termed pyrophoric. Autoignition temperatures of liquid chemicals are typically measured using a flask placed in a temperature-controlled oven in accordance with the procedure described in ASTM E659. When measured for plastics, autoignition temperature can be also measured under elevated pressure and at 100% oxygen concentration. The resulting value is used as a predictor of viability for high-oxyge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biomass
Biomass is plant-based material used as a fuel for heat or electricity production. It can be in the form of wood, wood residues, energy crops, agricultural residues, and waste from industry, farms, and households. Some people use the terms biomass and biofuel interchangeably, while others consider biofuel to be a ''liquid'' or ''gaseous'' fuel used for transportation, as defined by government authorities in the US and EU. The European Union's Joint Research Centre defines solid biofuel as raw or processed organic matter of biological origin used for energy, such as firewood, wood chips, and wood pellets. In 2019, biomass was used to produce 57 EJ (exajoules) of energy, compared to 190 EJ from crude oil, 168 EJ from coal, 144 EJ from natural gas, 30 EJ from nuclear, 15 EJ from hydro and 13 EJ from wind, solar and geothermal combined. Approximately 86% of modern bioenergy is used for heating applications, with 9% used for transport and 5% for electricity. Most of the global b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cellulose
Cellulose is an organic compound with the formula , a polysaccharide consisting of a linear chain of several hundred to many thousands of β(1→4) linked D-glucose units. Cellulose is an important structural component of the primary cell wall of green plants, many forms of algae and the oomycetes. Some species of bacteria secrete it to form biofilms. Cellulose is the most abundant organic polymer on Earth. The cellulose content of cotton fiber is 90%, that of wood is 40–50%, and that of dried hemp is approximately 57%. Cellulose is mainly used to produce paperboard and paper. Smaller quantities are converted into a wide variety of derivative products such as cellophane and rayon. Conversion of cellulose from energy crops into biofuels such as cellulosic ethanol is under development as a renewable fuel source. Cellulose for industrial use is mainly obtained from wood pulp and cotton. Some animals, particularly ruminants and termites, can digest cellulose with the help of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hattori Hanzō
or ''Second Hanzō'', nicknamed , was a famous Ninja of the Sengoku era, who served the Tokugawa clan as a ninja, credited with saving the life of Tokugawa Ieyasu and then helping him to become the ruler of united Japan. He is often a subject of varied portrayal in modern popular culture. Hanzō was known as an expert tactician and a master of sword fighting. Early life Born the son of (first Hanzō), a minor samurai in the service of the Matsudaira (later Tokugawa) clan. Stephen Turnbull, ''Ninja AD 1460–1650'' (2003), p. 12Joel Levy, ''Ninja: The Shadow Warrior'' (2008), p. 157-158 His birth name is , and he became known as the ''Second Hanzō''. He would later earn the nickname because of the fearless tactics he displayed in his operations; this moniker also distinguished him from Watanabe Hanzo (Watanabe Moritsuna), who is nicknamed . Though Hanzō was born in Mikawa Province (now Iga-chō, Okazaki, Aichi), he often returned to Iga Province, home of the Hattori fami ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ninjutsu
, sometimes used interchangeably with the modern term , is the martial art strategy and tactics of unconventional warfare, guerrilla warfare and espionage purportedly practised by the ninja. ''Ninjutsu'' was a separate discipline in some traditional Japanese schools, which integrated study of more conventional martial arts (''taijutsu'') along with ''shurikenjutsu'', ''kenjutsu'', ''sōjutsu'', '' bōjutsu'' and others. While there is an international martial arts organization representing several modern styles of ''ninjutsu'', the historical lineage of these styles is disputed. Some schools claim to be the only legitimate heir of the art, but ''ninjutsu'' is not centralized like modernized martial arts such as judo or karate. Togakure-ryū claims to be the oldest recorded form of ninjutsu, and claims to have survived past the 16th century. History Spying in Japan dates as far back as Prince Shōtoku (572–622). According to Shōninki, the first open usage of ''ninjutsu'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxygen
Oxygen is the chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. Oxygen is Earth's most abundant element, and after hydrogen and helium, it is the third-most abundant element in the universe. At standard temperature and pressure, two atoms of the element bind to form dioxygen, a colorless and odorless diatomic gas with the formula . Diatomic oxygen gas currently constitutes 20.95% of the Earth's atmosphere, though this has changed considerably over long periods of time. Oxygen makes up almost half of the Earth's crust in the form of oxides.Atkins, P.; Jones, L.; Laverman, L. (2016).''Chemical Principles'', 7th edition. Freeman. Many major classes of organic molecules in living organisms contain oxygen atoms, such as proteins, nucleic acids, carbohydrates, and fats, as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spontaneous Combustion
Spontaneous combustion or spontaneous ignition is a type of combustion which occurs by self-heating (increase in temperature due to exothermic internal reactions), followed by thermal runaway (self heating which rapidly accelerates to high temperatures) and finally, autoignition. Cause and ignition Spontaneous combustion can occur when a substance with a relatively low ignition temperature (hay, straw, peat, etc.) begins to release heat. This may occur in several ways, either by oxidation in the presence of moisture and air, or bacterial fermentation, which generates heat. The heat is unable to escape (hay, straw, peat, etc. are good thermal insulators), and the temperature of the material rises. The temperature of the material rises above its ignition point (even though much of the bacteria are destroyed by ignition temperatures). Combustion begins if sufficient oxidizer, such as oxygen, and fuel are present to maintain the reaction into thermal runaway. Affected materials ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linen
Linen () is a textile made from the fibers of the flax plant. Linen is very strong, absorbent, and dries faster than cotton. Because of these properties, linen is comfortable to wear in hot weather and is valued for use in garments. It also has other distinctive characteristics, notably its tendency to wrinkle. Linen textiles appear to be some of the oldest in the world; their history goes back many thousands of years. Dyed flax fibers found in a cave in Southeastern Europe (present-day Georgia) suggest the use of woven linen fabrics from wild flax may date back over 30,000 years. Linen was used in ancient civilizations including Mesopotamia and ancient Egypt, and linen is mentioned in the Bible. In the 18th century and beyond, the linen industry was important in the economies of several countries in Europe as well as the American colonies. Textiles in a linen weave texture, even when made of cotton, hemp, or other non-flax fibers, are also loosely referred to as "linen". ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
