wynalazki: Gun

Evidence: 100 • authority: 72

A gun is a device that propels a projectile using pressure or explosive force. The projectiles are typically solid, but can also be pressurized liquid (e.g. in water guns or cannons), or gas (e.g. light-gas gun). Solid projectiles may be free-flying (as with bullets and artillery shells) or tethered (as with Tasers, spearguns and harpoon guns). A large-caliber gun is also called a cannon, while a hand-held gun may be called a firearm. Guns were designed as weapons for military use, and then found use in hunting. The means of projectile propulsion vary according to designs, but are traditionally effected pneumatically by a high gas pressure contained within a barrel tube (gun barrel), produc…

Evidence: 41 • authority: 72

Gunpowder is the first explosive to have been created in the world. Popularly listed as one of the "Four Great Inventions" of China, it was invented during the late Tang dynasty (9th century) while the earliest recorded chemical formula for gunpowder dates to the Song dynasty (11th century). Knowledge of gunpowder spread rapidly throughout Eurasia, possibly as a result of the Mongol conquests during the 13th century, with written formulas for it appearing in the Middle East between 1240 and 1280 in a treatise by Hasan al-Rammah, and in Europe by 1267 in the Opus Majus by Roger Bacon. It was employed in warfare to some effect from at least the 10th century in weapons such as fire arrows, bom…

Evidence: 31 • authority: 92

Chemical Warfare Through the Ages: A Systematic Review From Antiquity to the Present.. Chemical warfare means the use of chemical agents that have direct toxic effects on animals, plants and humans, as weapons. The first documented use of a chemical agent for warfare purposes occurred in ancient times around 10,000 BCE in South Africa when weapons were dipped in chemicals and then used to attack and defend from enemies. However, much of the evidence lacks detail to provide thorough accounts of such events. Nevertheless, we aimed to systematically gather the most comprehensive account of all publicly known incidents involving chemical weapons throughout history. We identified 121 instances o…

Evidence: 31 • authority: 72

Gunpowder, referred to as black powder to distinguish it from modern smokeless powder, is the earliest known chemical explosive. It consists of a mixture of sulfur, charcoal (which is mostly carbon), and potassium nitrate (saltpeter). The sulfur and charcoal act as fuels, while the saltpeter is an oxidizer. Gunpowder has been widely used as a propellant in firearms, artillery, rocketry, and pyrotechnics, including use as a blasting agent for explosives in quarrying, mining, building pipelines, tunnels, and roads. Gunpowder is classified as a low explosive because of its relatively slow decomposition rate, low ignition temperature and consequently low brisance (breaking/shattering). Low expl…

Evidence: — • authority: 72

The fire lance (simplified Chinese: 火枪; traditional Chinese: 火槍; pinyin: huǒqiāng; lit. 'fire spear') was a gunpowder weapon used by lighting it on fire, and is the ancestor of modern firearms. It first appeared in 10th–12th century China and was used to great effect during the Jin–Song Wars. It began as a small pyrotechnic device attached to a polearm weapon, used to gain a shock advantage at the start of a melee. As gunpowder improved, the explosive discharge was increased, and debris or pellets added, giving it some of the effects of a combination modern flamethrower and shotgun, but with a very short range (about 3 meters or 10 feet), and only one shot (although some were designed for t…

Evidence: — • authority: 72

In the history of gunpowder there are a range of theories about the transmission of the knowledge of gunpowder and guns from Imperial China to the rest of the world following the Song, Jin and Yuan dynasties. The earliest bronze guns found in China date back to the 13th century, with archaeological and textual evidence for previous nascent gunpowder technology developed beforehand. Scholars note the scarcity of records for firearms in the Middle East prior to the mid-14th century, and in Russia before the late 14th century, yet cannons already appeared in Europe by the early 14th century. This has led to theories that gunpowder or the gun was independently invented in Europe. Less accepted…