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 209
Fig. 175. … How may the reaction of the air on a current of electricity escaping frompoints be shown ? Explain the operation of the Electric Season Machine. 204 ELECTRIC SHOCKS. Fig. 176.
Physics
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