High Quality Content by WIKIPEDIA articles! Ballistite is a smokeless propellant made from two high explosives, nitrocellulose and nitroglycerine. It was developed and patented by Alfred Nobel in the late 19th century. Gunpowder, or black powder (Poudre N, Poudre Noire), as it was also known, was for about a thousand years the only practical propellant. However, there were two major tactical disadvantages attached to the use of black powder. Firstly, a squad of soldiers firing volleys would be...
High Quality Content by WIKIPEDIA articles! Ballistite is a smokeless propellant made from two high explosives, nitrocellulose and nitroglycerine. It was developed and patented by Alfred Nobel in the late 19th century. Gunpowder, or black powder (Poudre N, Poudre Noire), as it was also known, was for about a thousand years the only practical propellant. However, there were two major tactical disadvantages attached to the use of black powder. Firstly, a squad of soldiers firing volleys would be completely unable to see their targets after a few shots; and secondly, their own location would be obvious because of the huge cloud of white smoke hanging over them.In 1884, a French chemist, Paul Vieille invented the first smokeless powder, called Poudre B (Poudre Blanche = white powder).It was a great improvement over black powder. Poudre B was made from two forms of nitrocellulose (collodion and guncotton), softened with ethanol and ether, and kneaded together.
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Учебное пособие предназначено для освоения графической системы AutoCAD в рамках изучения курса «Инженерная и компьютерная графика» студентами машиностроительных направлений и дизай-неров. При написании книги использован многолетний опыт преподавания автора в области инженерно-графических дисциплин. Издание содержит методические материалы по созданию, редактированию и оформлению чертежей по...
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