Gunpowder | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-06-23

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Gunpowder


00:02:55 1 History of gunpowder
00:03:06 1.1 China
00:08:25 1.2 Middle East
00:13:30 1.3 Mainland Europe
00:25:04 1.4 Great Britain and Ireland
00:29:23 1.5 India
00:33:17 1.6 Indonesia
00:37:29 1.7 Historiography
00:42:12 2 Manufacturing technology
00:47:36 3 Composition and characteristics
00:54:36 4 Serpentine
00:56:51 5 Corning
00:59:22 6 Modern types
01:03:52 7 Other types of gunpowder
01:06:23 8 Sulfur-free gunpowder
01:08:09 9 Combustion characteristics
01:08:20 9.1 Chemical reaction
01:11:04 9.2 Energy
01:12:00 9.3 Effects
01:14:53 10 Transportation regulations
01:15:59 11 Mining and industrial uses
01:17:52 12 Other uses
01:20:02 13 See also



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SUMMARY
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Gunpowder, also known as black powder to distinguish it from modern smokeless powder, is the earliest known chemical explosive. It consists of a mixture of sulfur (S), charcoal (C), and potassium nitrate (saltpeter, KNO3). The sulfur and charcoal act as fuels while the saltpeter is an oxidizer. Because of its incendiary properties and the amount of heat and gas volume that it generates, gunpowder has been widely used as a propellant in firearms, artillery, rockets, and fireworks, and as a blasting powder in quarrying, mining, and road building.
Gunpowder was invented in 9th-century China and spread throughout most parts of Eurasia by the end of the 13th century. Originally developed by the Taoists for medicinal purposes, gunpowder was first used for warfare about 1000 AD.Gunpowder is classified as a low explosive because of its relatively slow decomposition rate and consequently low brisance. Low explosives deflagrate (i.e., burn) at subsonic speeds, whereas high explosives detonate, producing a supersonic wave.
Ignition of gunpowder packed behind a projectile generates enough pressure to force the shot from the muzzle at high speed, but usually not enough force to rupture the gun barrel. Gunpowder thus makes a good propellant, but is less suitable for shattering rock or fortifications with its low-yield explosive power. However, by transferring enough energy (from the burning gunpowder to the mass of the cannonball, and then from the cannonball to the opposing fortifications by way of the impacting ammunition) eventually a bombardier may wear down an opponent's fortified defenses.
Gunpowder was widely used to fill fused artillery shells (and used in mining and civil engineering projects) until the second half of the 19th century, when the first high explosives were put into use. Gunpowder is no longer used in modern weapons, nor is it used for industrial purposes, due to its relatively inefficient cost compared to newer alternatives such as dynamite and ammonium nitrate/fuel oil. Today gunpowder firearms are limited primarily to hunting, target shooting, and bulletless historical reenactments.