Weapon is an objecto used to cause physical damage. In the practice, any objecto can be used as weapon. From a simple stone, to the most complex missile. However, they are commonly considered weapons the utensils servants with the specific objectivo of destroying, to intimidate or to kill. For example: * white Weapons (daggers, razors, swords, sabres, etc...)
* Firearms (pistols, revolvers, espingardas, machine guns, canhões,etc...)
* Weapons chemistries (mustard gas, gas Sarin, etc...).
* Biological weapons (virus, Antrax, etc...).
* Less lethal weapons (taser, rubber ammunition etc...)

The weapon concept can still enlarge to the electrónica, where the capacity to interfere with the systems electrónicos of a country or organization can become potentially more noxious than the mere use of conventional weapons. Since the beginning of the human evolution the man noticed that, only with its natural defenses he would not have conditions of surviving, that was necessary to meet in small groups so that, through the union of its forces, if they defended of the predadores, of another men and of other groups that intended to kill them, to take them its habitation, its victuals or that they tried to enslave them, that is to say, from the man's origin there was already a concern around its defense and of yours you belong.
That fear increased according to the evolution of the group, because the more a group was developed, it accumulated knowledge and ownerships, adult was the possibility to suffer attacks of rival groups that had for objective they take for itself all that that belonged to the other group, as the victuals, the females for they procreate, the best cave, the best location in relation to the hunt and water, appearing, in that way, the first needs of the improvement of the means of the human being defense, as well as of the social group.
The protection need and the tendency to the man's own aggressions guided its efforts for the development and production of weapons. The origin and the sequence of the first mechanical means used in the weapons can just be imagined, and with certainty they appeared in the Prehistory, probably the use of a branch as prolongation of its hands and arms to improve the effectiveness and the potency of a stone arremessada with the hand were the first improvement introduced in the armaments, who knows soon after them they noticed that if the stone went lapidada in pointed, sharp forms and perfurantes, she would kill more rapidamente.Assim the weapons they went being developed for if they turn knives, swords, daggers etc. Parallelly, they noticed that if they got to throw a projectile accurately, they could attack the prey or enemy without approaching. It appeared like this the concept of the arches arrow, of the beasts, of the boomerangs, etc.
The darts and the light lances of throw appeared in the primórdios of the civilization. The deep, whose creation is attributed to the fenícios or the inhabitants of the islands Baleares, it was used as war weapon during centuries.
The human evolution walked vagarosamente, the needs were larger and the restricted knowledge, appearing, in the prehistory, the period characterized by the generalization of the use of metallic instruments by the man. Its beginning repairs the more than 3000 a.C. The age of the brass, phase of the human cultural development appears immediately posterior to the neolítico, among the room and the second millennia before the Christian era. It was the first period in that the metals in a systematic way were used.
With the discovery of the metal, mainly of the iron, phase immediately posterior to the age of the brass, where it became the main matter for the production of weapons and utensils, where it was possible to produce swords, lances, knives, points of arrows, etc. more efficient for the hunt and defense. With the development of those groups the specific function of defense of the group appears, granted to the braveest and courageous, appearing, in that way, the armies that maintains its function until the days today.
The invention of the gunpowder for Chinese revolutionized the weapons. They appeared the canyons then, muskets, pistols, that got larçar projectiles before at speeds and distances unimaginable.
With the invention of the gunpowder it was possible to build apparels that arremessavam objects at larger distances than the apparels of mechanical energy, as the catapults. Appearing, like this, the canyons, that revolutionized the battles and they provided a defense and a much more efficient attack, so much to the castles, as to the embarkations, very well illustrated in time films.
With the growing development and passing of the years the canyons reduced in size until arriving to a dimension that was possible to be transported and manipulated by an alone man, appearing the muskets, the first firearms, that could be considered of personal use. Ever since the firearms started to equip from a small farmer, that needed to defend its family and its goods, to the great armies for they defend nations.
Today we have complex weapons and of an extraordinary potency that didn't imagine and, many, we at least became aware. An evolution to wide steps, mainly during and after Second World War.
Now, with the development of missiles, of the nuclear energy, of the engineerings chemistry and biological, the weapons adiquiriram a power of surprising destruction. White weapons) to Go for: sailing, researches THE white weapon it is every constituted object of sheet with capacity of to perforate or to cut as scissors, key-of-rift, penknives or razors. white weapons can also be considered other simple objects used to hit, to perforate or to cut as wood pieces, pens or glass cacos. Very disseminated (a knife, for example, is a basic utensil in the kitchen) they are death causadoras in a great number of patients every year. They are more common the wounds caused without the aggressor's forethought, and the wounds that he/she has ascending trajectory they are generally caused by men, while the descendants for women.
Some white weapons are: * Penknife * Knife * Facão * Razor * Probe * Foil * Sword * Sabre * Apple * Machado * Flail * I Beat English * Dagger In Brazil the Ordinance no. 1.246, of 11 of December of 1936 proíbe that a civilian carries a sheet with more than 10 centimeters, that the appearance of the expression " Sheet of 4 fingers ". Even so, Contravenções Penais(Dec's Law. Law nº2.848, of 1940) it revoked that law. Therefore it doesn't exist any law that proíba a person of leaving with any white weapon in the street, since there is not load for her, there is not authorization need. The biological war consists of the use of microorganisms (bacterias, virus or other organisms causadores of disease) or of toxins, as war weapon to disable or to kill an opponent. It can also be defined as the biological agents' employment in order to cause deaths in the man or in animals and damages you plant it (cultures) or materials.
In the Antiquity the biological war was practiced through the use of the you nourish toxicant original of alive organisms. The Armies used bodies in decomposição to contaminate the provisioning of water of a surrounded city, or they threw inside of the walls enemy cadavers of varíola victims.
Now, those weapons can be bacterias (or its toxins), virus and mushrooms manufactured in laboratories. During the Cold War, USA and former-USSR they develop researches gone back to the bacteriological war. But the only documented use of biological weapons in combat was made by Japanese against Chinese cities among the years 30 and 40. They were also attributed to the Japanese experiments with bacteriological agents, mainly in war prisoners.
The creation and storage of biological weapons was prohibited by the Convention on Biological Weapons (BWC) of 1972. Until May of 1997, the agreement was signed by 159 countries, of the which 141 already ratified him, besides Brazil.
The underlying idea to this agreement is to avoid the devastating impact of an attack well happened, that coulded not concebivelmente to result in thousands, possibly millions of deaths and to cause severe roturas to societies and economies. However, the convention proíbe only the creation and the storage, but I don't use it, of these weapons. However, the consent among military analysts is that, except in the context of the bioterrorismo, the biological war has a quite limited military application. He/she leaves him it is an origin weapon Okinawan, incorrectamente believed once as a tool agricultural used to measure logs, irrigation fields or to retain merchandise coaches in the place. Its basic form is the one of a dagger it blinds, with two long, blind projections (tsuba) coupled to the hilt. He/she leaves they are built in a variety in ways. Some are soft, while another are octagonal forced in the middle. The healthy tsuba, traditionally, symmetrical, however, the drawing Manji developed by Taira Shinken uses tsuba contrarily addressed.
He/she leaves him as purpose of a weapon it is a reflex of seuas different forms. With know-how, it can be used efficiently against a long sword, trapping the sheet of the sword in the tsuba of the he/she leaves. Users habilidosos is capases of catching a sheet with a to braid of hands. Different several ways exist of seizing one he/she leaves in the hands, which guarantee versatility to have used as both, lethal and no-lethal.
Traditionally, he/she leaves them they were loaded in three, two to the side, as primary weapons, and a third hidden in the backs, in the case of a to be dismantled. As a throw weapon, comes out him he/she has a lethal distance of approximately 15-20 meters. Arremesada usually against opponents using a sword, bo or other weapon of long alcançe. The heavy metal (or contemporary iron) of the he/she leaves he/she concentrated enough force to cross an armor.
He/she leaves they were represented strongly in the current culture. Rafael of the Tartarugas Ninja is known by using he leaves, as the super-heroine Marvel, Elektra Natchios and Gabriele of Xena: THE Princesa Guerreria. However its use in films and video loves he/she has not very or anything to see with its traditional uses, history or tradition. Firearm is an engine used for propulsion of solid projectiles by means of a fast expansion of gases obtained for the it burns controlled of a propelente, generally solid that is the gunpowder in most of the cases, contained everywhere in a shut camera except for that that drives the projectile through a hole cylindrical denominated pipe or tube. It is also indispensable for the operation of the firearm the ammunition.
The sporting shot is practiced with firearms and it is a Olympic modality.
They are parts of a firearm: * pipe or tube * camera of expansion of the gases * breech * shot system or percussion * system of safety * aim system * cable or anchorage device * municiador or loader The firearms can be classified as à(ao): * fire type * action * it gauges * ammunition