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Smokeless Powder

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smokeless powder: see explosive explosive, substance that undergoes decomposition or combustion with great rapidity, evolving much heat and producing a large volume of gas. The reaction products fill a much greater volume than that occupied by the original material and exert an enormous pressure,
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smokeless powder [′smōk·ləs ′pau̇d·ər]
(materials)
Nitrocellulose containing 13.1 percent nitrogen with small amounts of stabilizers (amines) and plasticizers usually present, as well as various modifying agents (nitrotoluene and nitroglycerin salts); used in ammunition.

Smokeless Powder 

a low explosive whose basic component is nitrocellulose, plasticized by one of several organic solvents. Smokeless powder is a hard, corniculate substance, similar to plastic; it is manufactured in the form of so-called powder elements—disks, tapes, grains, tubes, and so on. It is very durable and can burn steadily without blowing up under high pressure (tens or hundreds of meganewtons per sq m—that is, hundreds or thousands of kilogram-force per sq cm). The basic types of smokeless powder are ballistite, cordite, and pyroxylin powders; they differ mainly in the technology of production, in the solvents used, and in the kind of nitrocellulose. Smokeless powder is significantly superior to black powder in its burning stability and efficiency. It is used in all types of firearms, in rocket engines using solid fuel, and for other purposes. The first smokeless powder—pyroxylin powder—was invented in 1884 by the French engineer P. Vieille.



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They were laughed at by the chemists, who held that, while it was just barely probable that a single cartridge, charged with the new smokeless powder, might spontaneously explode, it was beyond all probability and possibility for all the cartridges in a given area, so charged, spontaneously to explode.
"And he's using smokeless powder," he concluded, after an examination of the mile-distant shore.
 
 
 
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