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The elements of natural philosophy : copiously illustrated by familiar experiments and containing descriptions of instruments, with directions for using : designed for the use of schools and academies (1856)

Sprague, A. W. (Alfred White), 1821-1891 · Boston : Phillips, Sampson & Company · leaf 202

An illustration from The elements of natural philosophy : copiously illustrated by familiar experiments and containing descriptions of instruments, with directions for using : designed for the use of schools and academies, 1856, leaf 202
terruption of the two wires will ignite the powder with aloud report.* Fig. 166 shows a sectional view of this instru-ment. * In all experiments for igniting gunpowder by electricity, a small glasstube filled with water forms the best connection. This may be about teninches long, having two wires… … Why will this not be ignited by the electric spark when it is placed betweengood metallic conductors ? Give the experiment with the Powder Bomb. ELECTRIC CANNON. 197

Physics

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