The Journal of the Franklin Institute, Vol. 99

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Excerpt from The Journal of the Franklin Institute, Vol. 99: Devoted to Science and the Mechanic Arts, January to June, 1875 It is estimated that the explosive power of nitroglycerin is equal to ten times that of gunpowder, and that half a kilogram (11 pounds) would lift from the ground and project a weight of kilograms. The heat evolved in the reaction is about calories for each kilogram. This same kilogram of nitroglycerin, exploding in a closed space having a volume of one liter, develops a theoretical pressure of atmospheres, a temperature of degrees, and a quantity of heat equal to calories. One liter of nitroglycerin weighs kilograms. In exploding in a space completely filled with it, as happens in a blast-hole in mining operations, or when operating under water, this substance develops a pressure of atmospheres, a pressure eight to ten times that produced by the same volume of gunpowder. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.