Search results
Results from the WOW.Com Content Network
Gunpowder is a low explosive: it does not detonate, but rather deflagrates (burns quickly). This is an advantage in a propellant device, where one does not desire a shock that would shatter the gun and potentially harm the operator; however, it is a drawback when an explosion is desired.
Because of their similar use, both the original black powder formulation and the smokeless propellant which replaced it are commonly described as gunpowder. The combustion products of smokeless powder are mainly gaseous, compared to around 55% solid products (mostly potassium carbonate , potassium sulfate , and potassium sulfide ) for black ...
The first powders were called "MR" for military rifle powder. In the 1920s these powders were improved and the name was changed to IMR. Various different powder are produced and are given numbers to distinguish them. The different types of powder typically have different burning rates.
Earliest known written formula for gunpowder, from the Wujing Zongyao of 1044 AD.. Gunpowder is the first explosive to have been developed. 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).
Gunpowder, the first explosive, is developed. [1] [2] 1040 - 1044 The book Wujing Zongyao contains three formulas for gunpowder, the first such reference. 1267 Roger Bacon's Opus Majus contains the first European reference to gunpowder. [3] 1659 Ammonium nitrate is first synthesized by Johann Rudolf Glauber; it wasn't used as an explosive until ...
Although all firearm propellants are generally called powder, [1] the term gunpowder originally described mixtures of charcoal and sulfur with potassium nitrate as an oxidizing agent. [2]: 133, 137 By the 20th century these early propellants were largely replaced by smokeless powder of nitrocellulose or similarly nitrated organic compounds.
The entries are grouped according to their uses, with rough classes set aside for very similar weapons. Some weapons may fit more than one category (e.g. the spear may be used either as a polearm or as a projectile), and the earliest gunpowder weapons which fit within the period are also included.
A stick of cordite from World War II A sectioned British 18-pounder field gun shrapnel round, World War I, with bound string to simulate the appearance of the original cordite propellant Close-up of cordite filaments in a .303 British Rifle cartridge (manufactured in 1964) Burning a strand of cordite from a .303 British round