Modern electricity and magnetism, theoretically and practically considered (1885)
Avery, Elroy M[cKendree], 1844- [from old catalog] · New York and Chicago, Sheldon and company · leaf 76
horus. Experiment 59.—On the glass table of theuniversal discharger (Fig. 166), place a piece of ■^^^- ^^7- wood and bring the knobs of the sliding rodsagainst its ends so that the line joining the knobs shall be inthe direction of the fibers of the wood. Through the apparatus thusarranged,…
Electricity · Magnetism
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