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Despite the disputed historical existence of the ninjato, [12] Hayes claims to describe it in detail, and suggests that the typical description of the ninjatō could be due to ninja having to forge their own blades from slabs of steel or iron with the cutting edge being ground on a stone, with straight blades being easier to form than the much ...
NEMO 3-D [10] – enables multi-million atom electronic structure simulations in empirical tight binding; open source; an educational version is on nanoHUB and Quantum Dot Lab [11] nextnano [12] allows simulating geometry, electronic properties and electrical transport phenomena in various nanostructures using continuum models (commercial software)
Visual glossary of Japanese sword terms. Japanese swordsmithing is the labour-intensive bladesmithing process developed in Japan beginning in the sixth century for forging traditionally made bladed weapons [1] [2] including katana, wakizashi, tantō, yari, naginata, nagamaki, tachi, nodachi, ōdachi, kodachi, and ya.
Chokutō typically come in hira-zukuri and kiriha-zukuri tsukurikomi (blade styles) which make them very distinct from later tachi and katana which rarely use these forms. Swords of this period are classified as jōkotō and are often referred to in distinction from Japanese swords. [6]
A kodachi (小太刀, こだち), literally translating into "small or short tachi (sword)", is one of the traditionally made Japanese swords (nihontō) used by the samurai class of feudal Japan.
Archaeological excavations dated the oldest sword in Japan from at least as early as second century B.C. [2]: 4 The Kojiki (Record of Ancient Matters) and the Nihon Shoki (History of Japan), ancient texts on early Japanese history and myth that were compiled in the eighth century A.D., describe iron swords and swordsmanship that pre-date recorded history, attributed to the mythological age of ...
Hyohō Niten Ichi-ryū (兵法 二天 一流), which can be loosely translated as "the school of the strategy of two heavens as one", is a koryū (ancient school), transmitting a style of classical Japanese swordsmanship conceived by Miyamoto Musashi.
Tantō are generally forged in the hira-zukuri (平造) style (without a ridgeline), [1] [5] meaning that their sides have no ridge line and are nearly flat, unlike the shinogi-zukuri (鎬造) structure of a katana. Some tantō have particularly thick cross-sections for armor-piercing duty, and are called yoroi toshi.