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Glossary Of Japanese Swords
This is the glossary of Japanese swords, including major terms the casual reader might find useful in understanding articles on Japanese swords. Within definitions, words set in boldface are defined elsewhere in the glossary. A * – thin line that runs across the temper line (hamon) to the cutting edge (ha). * – regular wavy surface grain pattern (jihada). Also known as gassan-hada after the name of a school which usually produced swords of this type. B * – an authentically shaped wooden (practice) sword (or other bladed weapon). * – temper line (''hamon'') of the blade point (kissaki). (see image) (also see ko-maru) C * – black gleaming lines of nie that appear in the ji. * – distinctly visible mokume-hada with a clearer steel than in similar but coarser patterns. * – an irregular hamon pattern resembling cloves, with a round upper part and a narrow constricted lower part. * – a straight sword primarily produced during the ancient period (jokotō). Their defini ...
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BK 1 001
BK is the common abbreviation for the Burger King chain of fast food restaurants. BK or Bk may also refer to: Businesses and organizations * The Bank of New York Mellon, the New York Stock Exchange symbol for The Bank of New York Mellon Corporation (NYSE:BK) * Brahma Kumaris, a religious movement * British Knights, a manufacturer of athletic shoes * Federal Criminal Police Office (Austria) (''Bundeskriminalamt''), a federal police force * Okay Airways (IATA airline code BK) Science and technology * BK channel, an ion channel characterized by its large conductance of potassium ions through cell membranes * BK virus, a member of the polyomavirus family * Berkelium (Bk), a chemical element * Elektronika BK, a series of 16-bit PDP-11-compatible Soviet home computers developed by NPO Scientific Center * Bordkanone, an aircraft cannon * Brother's Keeper (software), a genealogy software program * TU Delft Faculty of Architecture (Dutch: ''Faculteit Bouwkunde'') * Bradykinin, a peptide t ...
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Mino Province
was a province of Japan in the area of Japan that is today southern Gifu Prefecture. Mino was bordered by Ōmi to the west, Echizen and Hida to the north, and Shinano to the east, and Ise, Mikawa, and Owari to the south. Its abbreviated form name was . Under the ''Engishiki'' classification system, Mino was ranked as one of the 13 "great countries" (大国) in terms of importance, and one of the "near countries" (近国) in terms of distance from the capital. The provincial capital and ''ichinomiya'' were located in what is now the town of Tarui. Historical record "Mino" is an ancient place name, and appears in ''mokkan'' wooden tags from the ruins of Asuka-kyō, Fujiwara-kyō, and other ancient sites, but using the ''kanji'' "三野国". Per the ''Kujiki'', there were originally three separate countries in Mino, centered around what is now Ōgaki, Ōno, and Kakamigahara. Each had its own ''Kuni no miyatsuko'', and together with Motosu (in eastern Gifu) and Mugetsu ...
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Katana
A is a Japanese sword characterized by a curved, single-edged blade with a circular or squared guard and long grip to accommodate two hands. Developed later than the ''tachi'', it was used by samurai in feudal Japan and worn with the edge facing upward. Since the Muromachi period, many old ''tachi'' were cut from the root and shortened, and the blade at the root was crushed and converted into ''katana''. The specific term for ''katana'' in Japan is ''uchigatana'' (打刀) and the term ''katana'' (刀) often refers to single-edged swords from around the world. Etymology and loanwords The word ''katana'' first appears in Japanese in the '' Nihon Shoki'' of 720. The term is a compound of ''kata'' ("one side, one-sided") + ''na'' ("blade"), in contrast to the double-sided '' tsurugi''. See more at the Wiktionary entry. The ''katana'' belongs to the ''nihontō'' family of swords, and is distinguished by a blade length (''nagasa'') of more than 2 ''shaku'', approximately . ' ...
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Kaiken (dagger)
A is a long, single (or rare double-edged) knife without ornamental fittings housed in a plain mount. Uses It was once carried by men and women of the samurai class in Japan. It was useful for self-defense in indoor spaces where the long blade ''katana'' and intermediate sword ''wakizashi'' were inconvenient. Women carried them in their kimono either in a pocket-like space (futokoro) or in the sleeve pouch (tamoto) for self-defense and for ritual suicide by slashing the veins in the left side of the neck. When a samurai woman married, she was expected to carry a kaiken with her when she moved in with her husband. In modern Japan, a kaiken is worn as a traditional accessory for formal kimono, such as a furisode, uchikake and a shiromuku, tucked into their obi. Orthography Due to pronunciation changes over time, the ''kwaiken'' is now called a ''kaiken''. The kaiken is also referred to as a ''futokoro-gatana'' or a ''mamori-gatana'' (守り刀; "protection sword/blade"). ...
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Bayonet
A bayonet (from French ) is a knife, dagger, sword, or spike-shaped weapon designed to fit on the end of the muzzle of a rifle, musket or similar firearm, allowing it to be used as a spear-like weapon.Brayley, Martin, ''Bayonets: An Illustrated History'', Iola, WI: Krause Publications, , (2004), pp. 9–10, 83–85. From the 17th century to World War I, it was a weapon for infantry attacks. Today it is considered an ancillary weapon or a weapon of last resort. History The term ''bayonette'' itself dates back to the mid-to-late 16th century, but it is not clear whether bayonets at the time were knives that could be fitted to the ends of firearms, or simply a type of knife. For example, Cotgrave's 1611 ''Dictionarie'' describes the bayonet as "a kind of small flat pocket dagger, furnished with knives; or a great knife to hang at the girdle". Likewise, Pierre Borel wrote in 1655 that a kind of long-knife called a ''bayonette'' was made in Bayonne but does not give any ...
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Heian Period
The is the last division of classical Japanese history, running from 794 to 1185. It followed the Nara period, beginning when the 50th emperor, Emperor Kanmu, moved the capital of Japan to Heian-kyō (modern Kyoto). means "peace" in Japanese. It is a period in Japanese history when the Chinese influences were in decline and the national culture matured. The Heian period is also considered the peak of the Japanese imperial court and noted for its art, especially poetry and literature. Two types of Japanese script emerged, including katakana, a phonetic script which was abbreviated into hiragana, a cursive alphabet with a unique writing method distinctive to Japan. This gave rise to Japan's famous vernacular literature, with many of its texts written by court women who were not as educated in Chinese compared to their male counterparts. Although the Imperial House of Japan had power on the surface, the real power was in the hands of the Fujiwara clan, a powerful aristocratic f ...
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Japanese Sword Construction
Japanese swordsmithing is the labour-intensive bladesmithing process developed in Japan for forging traditionally made bladed weapons ( ''nihonto'') including ''katana'', ''wakizashi'', ''tantō'', ''yari'', ''naginata'', ''nagamaki'', ''tachi'', '' nodachi'', ''ōdachi'', ''kodachi'', and ''ya'' (arrow). Japanese sword blades were often forged with different profiles, different blade thicknesses, and varying amounts of grind. ''Wakizashi'' and ''tantō'' were not simply scaled-down ''katana'' but were often forged without a ridge (''hira-zukuri'') or other such forms which were very rare on ''katana''. Traditional methods Steel production The steel used in sword production is known as , or "jewel steel" (''tama'' – ball or jewel, ''hagane'' – steel). ''Tamahagane'' is produced from iron sand, a source of iron ore, and mainly used to make samurai swords, such as the ''katana'', and some tools. The smelting process used is different from the modern mass production of st ...
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Texture (crystalline)
In physical chemistry and materials science, texture is the distribution of crystallographic orientations of a polycrystalline sample (it is also part of the geological fabric). A sample in which these orientations are fully random is said to have no distinct texture. If the crystallographic orientations are not random, but have some preferred orientation, then the sample has a weak, moderate or strong texture. The degree is dependent on the percentage of crystals having the preferred orientation. Texture is seen in almost all engineered materials, and can have a great influence on materials properties. The texture forms in materials during thermo-mechanical processes, for example during production processes e.g. rolling. Consequently, the rolling process is often followed by a heat treatment to reduce the amount of unwanted texture. Controlling the production process in combination with the characterization of texture and the material's microstructure help to determine the materi ...
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Crystallite
A crystallite is a small or even microscopic crystal which forms, for example, during the cooling of many materials. Crystallites are also referred to as grains. Bacillite is a type of crystallite. It is rodlike with parallel longulites. Structure The orientation of crystallites can be random with no preferred direction, called random Texture (chemistry), texture, or directed, possibly due to growth and processing conditions. While the structure of a (single crystal, single) crystal is highly ordered and its crystal lattice, lattice is continuous and unbroken, Amorphous solid, amorphous materials, such as glass and many polymers, are non-crystalline and do not display any structures, as their constituents are not arranged in an ordered manner. Polycrystalline structures and paracrystalline phases are in-between these two extremes. Polycrystalline materials, or polycrystals, are solids that are composed of many crystallites of varying size and orientation. Most materials are po ...
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Wood Grain
Wood grain is the longitudinal arrangement of wood fibers or the pattern resulting from such an arrangement. Definition and meanings R. Bruce Hoadley wrote that ''grain'' is a "confusingly versatile term" with numerous different uses, including the direction of the wood cells (e.g., ''straight grain'', ''spiral grain''), surface appearance or figure, growth-ring placement (e.g., ''vertical grain''), plane of the cut (e.g., ''end grain''), rate of growth (e.g., ''narrow grain''), and relative cell size (e.g., ''open grain'').Hoadley, R. Bruce. "Glossary." ''Understanding Wood: A Craftsman's Guide to Wood Technology''. Newtown, Conn.: Taunton, 1980. 265. Print. Physical aspects Perhaps the most important physical aspect of wood grain in woodworking is the grain direction or slope (e.g. against the grain). The two basic categories of grain are straight and cross grain. Straight grain runs parallel to the longitudinal axis of the piece. Cross grain deviates from the longitudinal a ...
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Hamon (swordsmithing)
In swordsmithing, (from Japanese, literally "edge pattern") is a visible effect created on the blade by the hardening process. The hamon is the outline of the hardened zone (''yakiba'') which contains the cutting edge (''ha''). Blades made in this manner are known as differentially hardened, with a harder cutting edge than spine (''mune'') (for example: spine 40 HRC vs edge 58 HRC). This difference in hardness results from clay being applied on the blade (''tsuchioki'') prior to the cooling process (quenching). Less or no clay allows the edge to cool faster, making it harder but more brittle, while more clay allows the center (''hira'') and spine to cool slower, thus retaining its resilience.''A History of Metallography'' By Cyril Stanley Smith -- MIT Press 1968 Page 40--57 Introduction The hamon of a blade is created during the quenching process (''yakiire''). During the differential heat treatment, the clay coating on the back of the sword reduces the cooling speed of the ...
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